Acrel Co.,Ltd.

Wireless Temperature Measurement(2024年02月08日)

acrel — 2024-02-22T15:58:54+0900

https://www.acrelenergy.com/products/wireless-temperature-measurement/

ARTM-Pn wireless temperature measurement device: ARTM-Pn wireless temperature measurement device can be installed separately in high-voltage cabinets and low-voltage drawer cabinets. Each device can receive data from 18 sensors. The sensor models can be equipped with ATE100, ATE200, and ATE300. The device has a 485 interface, which can upload the collected temperature data to the monitoring center.

Wireless Temperature Measurement Types

ATE Series Cheap Wireless Temperature Sensor
Wireless temperature sensor for cable joint.

As one of wireless temperature sensor suppliers and wireless temperature sensor manufacturers, we can offer kinds of related products for sale, if you are interested, please contact us.

Established in 2003, Acrel Co, Ltd. (Stock Code: 300286. SZ) is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart three phase energy meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

WHD20R-22 Digital Temperature & Humidity Controller(2024年02月07日)

acrel — 2024-02-22T15:58:20+0900

https://www.acrelenergy.com/products/whd20r-22-digital-temperature-humidity-controller/

The controller for temperature and humidity is suitable for adjustment and control of temperature and humidity in equipments of high voltage switchgear, terminal box, ring network panel, box transformer substation etc. It can effectively protect relevant equipment from faults resulting from excessive low or high temperature, creepage or flashover etc. from humidity or condensation. These products meet the requirements of GB/T 15309-1994.

Technical Parameters of WHD20R-22 Digital Temperature and Humidity Controller
How to Wire a WHD20R-22 Digital Temperature & Humidity Controller
WHD20R-22 Digital Temperature & Humidity Controller Applications
Technical ParameterValue
Measuring RangeTemperature-40.0℃~99.9℃
Humidity0%RH~99%RH
PrecisionTemperature±1℃
Humidity±5%RH
Transmitting OutputDC 4-20mA or DC 0~20mA
Ser range of controlling parameterHeating for Temperature rising-40.0℃~40.0℃
Blowing for temperature decreasing0.0℃~99.9℃
Humidity control20%RH~90%RH
Output Contact Capacity5A/AC250V
Start/stopgap5
Communication portRS485,MODBUS(RTU) treaty
Auxiliary PowerVoltageAC/DC 85-265V
ConsumptionBasic power consumption(≤0.8w)+relay power consumption(each channel≤0.7w)
Insulation Resistance≥100MΩ
Power-frequency withstand voltagepower with shell, touchable metal parts/power with other terminal groups 2kV/1 min(AC.RMS)
Average work time without stoppage≥50000 hours
The working condition(controller)Temperature-20℃~+60℃
Humidity≤95%RH, without condensation and corrosive gas
Altitude≤2500m

As a power meter manufacturer, we can provide kinds of dc power meter for sale, if you are interested, please leave us a message.

Temperature & Humidity Controller(2024年02月06日)

acrel — 2024-02-22T15:57:44+0900

https://www.acrelenergy.com/products/temperature-humidity-controller/

Digital Temperature and Humidity Controller for Sale
The WHD series temperature and humidity controller uses sensors to detect the temperature and humidity values in the cabinet and adjusts the temperature and humidity values by controlling the external fan and heater, which can effectively prevent equipment failures caused by low temperature and high temperature and moisture or condensation The occurrence of creepage and flashover accidents caused by it.

Temperature & Humidity Controller Types

WHD48-11 Smart Temperature and Humidity Controller
Digital temperature and humidity controller.

WHD72-11 Panel Mounted Temperature & Humidity Controller
Temperature & Humidity controller WHD72-11.

WHD46-22 Two Multi Channel Temperature & Humidity Controller
Two channel temperature&humidity controller with RS485 with alarm 4-20mA output.

WHD20R-22 Digital Temperature & Humidity Controller
Din rail measuring two channel Temperature and humidity with sensors WHD20R-22.

WHD72-22 Temparature Humidity Controller
The controller for temperature and humidity is suitable for adjustment and control of temperature and humidity in equipments of high voltage switchgear, terminal box, ring network panel, box transform...

Established in 2003, Acrel Co, Ltd. (Stock Code: 300286. SZ) is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart energy meter china manufacturer is equipped with complete production lines from cloud platform software to sensors.

Now the price of wireless energy meter is reasonable, if you are interested, please contact us.

Prepayment Energy Meter(2024年02月05日)

acrel — 2024-02-22T15:57:04+0900

https://www.acrelenergy.com/products/prepayment-energy-meter/

The electronic prepaid electric energy meter adopts a guide rail installation structure and has the functions of prepayment, load control, and RS485 communication. The smart prepaid electricity meter is an ideal electric energy meter for reforming the traditional electricity system and improving the level of electricity management. Acrel electric as one of the most professional prepaid electric meter suppliers, can provide you various types of prepaid electricity meters.

Types of Prepaid Electricity Meters for Sale

Three Phase DTSY1352
Digital single phase prepaid rs485 energy meter.

Single Phase DDSY1352
Three phase electricity Prepaid Billing Meters with RS485.

Multi-function Energy Meter(2024年02月04日)

acrel — 2024-02-22T15:56:32+0900

https://www.acrelenergy.com/products/multi-function-energy-meter/

Multi function meter refers to the watt-hour meter which has more than two functions, such as time-sharing and measurement demand, in addition to measuring active power (reactive power), and can display, store and output data, and has powerful data acquisition and processing functions. Digital multifunction meter is suitable for all common power parameters, real-time power measurement, energy measurement and power quality analysis in power grid. The user-friendly operation method of Acrel multifunction meter manufacturers provide digital multifunction meter that more convenient to use, if you want to know more about multi function meter price and other info, please contact us.

Multi-function Energy Meter Types

AMC96L-E4/KC
Energy Meter AMC96L-E4/KC can be used in control systems, SCADA systems and energy management systems.

PZ80L-E4
PZ series can measure current , voltage, power, power factor and Kwh parameters with RS485 Modbus, 2DI/DO and alarm functions.

APM800 Series
three phase smart power quality energy analyzer meter APM800 high accuracy class 0.5S with RS485 Modbus.

AMC48L-AI
AMC series measure current and have RS-485port,Modbus protocol and alarm function.

AMC72L-AI3
AMC 3 phase digital ampere meter display is clear and beautiful, and can replace the traditional analog pointer meter. It is a kind of high performance automation instrument which is suitable for ind...

AMC72L-E4
This series of meters have RS-485port, Modbus-RTU protocol. Analog output, alarm output, switching input/output can be selected.

AMC48L-AV
AMC series measure voltage and support RS-485port Modbus protocol and Analog output.

ACR10R-D16TE
ModelACR10R-D16TEInputPhaseSingle phaseFrequency45~65HzVoltageRated voltage：AC 100V 400VOverload：1.2 times the rated voltag（continuous）；2 times the rated voltage lasting for 1 secondPower consumption：less then 0.2VACurrentMa.

Multifunction Meter Working Principle

When the digital multi function meter is working, the voltage is divided by the resistance, and the current is sampled on the sampling resistor by the current transformer, and then sent to the dedicated power chip for processing, and converted into a digital signal to the CPU for calculation. Due to the use of a dedicated power processing chip, the voltage and current sampling resolution is greatly improved, and there is enough time to measure the power more accurately so that the measurement accuracy of the electric energy meter has been significantly improved. Smart energy meter application is more and more wide.

The CPU in the figure is used for time-sharing billing and processing various input and output data, reads the data of the dedicated energy chip through the serial interface and completes the time-sharing active energy metering and maximum demand metering functions according to the preset time period. According to the needs, display various data, communicate through infrared or RS485 interface, and complete the monitoring of operating parameters, record and store various data.

Multi-function Energy Meter Features

The multiple rates can be set in 4 time zones, 10 periods, and four rates (peak and flat valley)

The sub-harmonic measurement can reach 2-63 times.

With voltage crest factor, telephone crest factor, current K factor, and waveform recording functions

Configurable Ethernet (Modbus-TCP protocol) function

Support Modbus-RTU and DLT645 protocol at the same time

Expandable optional module

Acrel power meter is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart 3 phase energy meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

Multi Circuit Energy Meter(2024年02月03日)

acrel — 2024-02-22T15:56:02+0900

https://www.acrelenergy.com/products/multi-circuit-energy-meter/

Multi circuit energy meter programmable intelligent meters, adopting AC sampling technology, can directly or indirectly measure electric voltage and current of single-phase or three-phase grid. Multi circuit power meter can be used for local display, and connecting industrial control devices to form a measuring control system.

Multi Function Energy Meter Types

AMC16Z series IDC monitoring module
Multi Circuit 48 Channel Energy Meter monitoring data center.

ADW210
ADW210has various expanded function modules for communication, measuring of temperature&residual current, DO/DI switch. Meanwhile, a 3-phase energy meter can monitor 4xthree phase circuits in total which means just 1 ADW210 can monitor 12 loads at the same time.

Established in 2003, Acrel smart meter is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart energy electric meter manufacturing company is equipped with complete production lines from cloud platform software to sensors.

Medical IT Isolated Power Panels System(2024年02月02日)

acrel — 2024-02-22T15:55:22+0900

https://www.acrelenergy.com/products/medical-it-isolated-power-panels-system/

Medical Isolated Power Panels System
The medical isolation power supply cabinet and insulation monitoring device are designed according to the different power distribution characteristics of the 2 types of medical places and are used to monitor the operating status of the medical IT system. Once a certain set of IT systems fails, electrical maintenance personnel can make a judgment within time and deal with it according to the on-site situation.

Types of Medical IT Isolated Power Panels for Healthcare Facilities System

ACLP10-24 Hospital Isolated Power System
DC Auxiliary Power Supply Medical Intelligent Insulation Monitor.

GGF Isolation Power Cabinet
Intelligent medical insulation monitor cabinet.

Hospital Isolation Panel Testing

The power supply of the IT system should use an independent power source, such as a distribution/isolation transformer, generator set, battery and UPS. Isolation transformers are usually used more often. After the isolation transformer, it is the IT system. There is no direct connection between the live conductor and the ground in the IT system. The exposed conductive parts of all equipment must be connected to the ground. In a single-phase IT system, the secondary side of the transformer does not matter whether the phase line or the N line is divided. They are all live conductors.

Established in 2003, Acrel Co Ltd. (Stock Code: 300286. SZ) are a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" is equipped with complete production lines from cloud platform software to sensors.

If you want to know more kinds of energy meter, please visit our website.

Measuring CT(2024年02月01日)

acrel — 2024-02-22T15:54:47+0900

https://www.acrelenergy.com/products/measuring-ct/

Measuring CT and Protection CT
The current transformer shell is made of flame-retardant and high-temperature resistant materials.

The iron core is wound with an oriented cold-rolled silicon steel strip. The secondary conductor is made of high-strength electromagnetic enameled wire.

This series of transformers are used as AC current signal acquisition components and can be used for measurement.

Measuring CT Types

AKH-0.66/I
AKH-0.66 series low voltage Measuring current transformer.

BA Series Current Transducer
Current transformer AC 0~600A analog output 4-20mA 0-5V.

BD Series Current Transducer
DC current signal isolator DC4-20mA input and output.

BM Series Analog Signal Isolator

P Type Protection Current Transformer

If you want to know more details of ct for dc current measurement, please visit our website.

As one of power meter manufacturers, we can offer kinds of power meter for sale, if you are interested, please leave us a message.

EV Meter for Charging Pile Energy Management System Solution(2023年11月27日)

acrel — 2023-11-27T11:29:04+0900

https://www.acrelenergy.com/power-meter-for-ev-charging/

At present, there are two common charging piles on the market, one is DC charging pile and the other is AC charging pile.

DC charging piles: DC charging piles are fixedly installed in some public places outside electric vehicles with a dc wireless energy meter for solar system, such as residential quarters, residential parking lots, commercial areas, service areas, outdoor parking lots, electric vehicle charging stations and other places. It is a charging device that provides DC power for non-vehicle electric vehicle batteries by connecting to the public grid. Because the DC charging pile can directly charge the battery of an electric vehicle, it is generally powered by a three-phase four-wire system or a three-phase three-wire system, and the output voltage and current can be adjusted in a large range, so it can realize the fast charging of electric vehicles, and the DC charging pile is also, therefore, It is called fast charge.

AC charging piles: AC charging piles are also fixedly installed in some public places outside electric vehicles, and provide controllable one-way AC power or three-phase AC power supply devices for the onboard chargers of electric vehicles. It should be noted that the AC charging pile itself does not have the charging function, it only provides power output, and can charge the battery of the electric vehicle by connecting to the onboard charger of the electric vehicle. The output power of AC charging piles will not be very large, generally 3.5kW, 7kW, 15kW, etc.

ADL10-E
● AC 220V
● 10（60）A
● RS485，MODBUS-RTU
● LCD display
● kWh Class 1，Kvarh Class 2
● U、I、P、Q、S、PF、kWh、kvarh
● DIN 35mm

ADL100-ET
● AC220V
● 10（60）A，20（100）A
● RS485(MODBUS-RTU)
● Set parameters
● LCD display
● KWH Class 1
● DIN 35 mm

ADL200
● AC220V
● 10(80)A
● RS485(MODBUS-RTU)
● Set parameters
● LCD display
● kWh Class 1
● DIN 35 mm

ADL400
● AC 3×220/380V
● 3×1(6)A, 3×10(80)A
● RS485(MODBUS-RTU)
● Set parameters
● LCD display
● KWH Class 0.5
● DIN 35 mm

ADL3000-E
● AC 3×220/380V，3×380V，3×57.7/100V，3×100V
● 3×1（6）A，3×10（80）A
● U、I、P、Q、S、PF、kWh、kvarh
● RS485(MODBUS-RTU)
● LCD display
● Frozen data
● 2-31st Harmonics
● kWh Class 0.5S,kVarh Class 2

Hall Sensors
● current input 0-2000A
● Analog output 4-20mA or 5V

PZ72(L)-DE
● Panel mounting
● Measure DC 0-1000V
● RS485(Modbus protocol)

DJSF1352-RN
● Din rail mounting
● Measure DC 0-1000V
● RS485 communication (Modbus protocol)

DC Current Shunts

Now the price of our power meter for ev charging and ev charger with meter is reasonable, if you have needs, please contact us.

Established in 2003, Acrel meter is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart energy meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

Multi-function Instrument Definition and Troubleshooting(2023年11月27日)

acrel — 2023-11-27T11:28:31+0900

https://www.acrelenergy.com/multifunction-instrument-definition-and-troubleshooting.html

Ⅰ. What is a multifunction meter?

Multi Function Meter Definition
The multifunction power meter is a multifunctional smart meter with programmable measurement, display, digital communication and power pulse transmission output. It can complete power measurement, power measurement, data display, acquisition and transmission. Multifunctional power meters are widely used in substation automation, distribution automation, intelligent buildings, and power measurement, management and assessment within enterprises. The measurement accuracy is 0.5. It can realize LED on-site display and remote RS-485 digital interface communication. It uses a communication protocol.

Ⅱ. What is the specific composition of a multifunction meter?

1. Measuring components, such as voltage transformers and current transformers.
2. Power components, which mainly provide power to the system.
3. Measurement and control components, which mainly calculate the measured signals and control the output switch signal.
4. Display components, which display the measurement and measurement.
5. Communication components for easy networking.
6. Other components. Switch, input, output, 4-20ma signal, etc.

Ⅲ. The functions of the multifunction meter

The multifunction power meter has two main functions: measurement and metering.

1. Measurement: It can measure voltage, current, active power, reactive power and power factor.
2. Metering: It can measure the total power consumption, peak, flat and valley power consumption. The monthly electricity can be counted and the monthly meter reading time can be set.

Ⅳ. Methods of the multifunction meter's abnormal performance

If the measurement of the multifunction electric energy meter is abnormal, the electric energy meter may be damaged on the one hand, and the fault may be caused by the poor wiring of the instrument or the transformer on the other hand. So how to judge and exclude it?

When the active power P value of the multifunction instrument is negative, and the measurement of electric energy, power and power factor is wrong, it can be eliminated according to the following two methods.

Method 1: Determine whether the wiring of the multifunction instrument terminal is faulty.
Under normal circumstances, the phase sequence of the multi-function power meter is Ua-Ia; Ub-Ib; Uc-Ic.
If the power is negative and the power factor and electric energy are wrongly measured, first check whether the phase sequence of the terminals of the multifunction power meter is normal. If not, please power off and reconnect. If the phase sequence is normal, but the meter data is abnormal, please check whether the incoming and outgoing wires of the secondary side of the current transformer are connected correctly.

Method 2: Determine whether the wiring of the incoming and outgoing wires of the secondary side current transformer is faulty.
If the active power P value of the multi-function power meter is negative and the measurement of electric energy, power and power factor is wrong, we first rule out whether it is a wiring fault in the incoming line of the power meter. If the wiring of the incoming terminal of the instrument is normal, we will check whether the wiring of the secondary side current transformer is normal. Under normal circumstances, the connection method of the incoming and outgoing wires of the current transformer: Ia+ incoming wire, Ia- outgoing wire; Ib+ incoming wire, Ib- outgoing wire; Ic+ incoming wire, Ic- outgoing wire.

If the wiring of the secondary side of the current transformer is faulty, the following phenomena will occur:

(1) The active power is negative.
(2) Abnormal energy metering.
(3) Abnormal power factor.
If the above two fault reasons are eliminated, and the above fault phenomenon still occurs in the multifunction instrument, please contact the instrument manufacturer.

Established in 2003, Acrel Co Ltd. (Stock Code: 300286. SZ) is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart energy meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

Working Principles and Wiring of Various Types of Electric Meters(2023年11月27日)

acrel — 2023-11-27T11:27:48+0900

https://www.acrelenergy.com/working-principles-and-wiring-of-electric-meters.html

An electric energy meter for solar system is a meter used to measure electrical energy, also known as a watt-hour meter, a fire meter, and a kilowatt-hour meter. It refers to a meter that measures various electrical quantities.

Electric energy meters (coin-operated, magnetic card, and electric card), loss energy meters, multi-function energy meters, and smart energy meters.

Electric energy meter classification basis
According to the electricity meter working principle, energy meter working principle: induction (mechanical) electric energy meter, stationary (electronic) electric energy meter, electromechanical integrated (hybrid) electric energy meter
According to the nature of the power meter connected to the power source: AC meter power meter, DC meter power meter
According to the structure of the electric energy meter: integral electric energy meter, split electric energy meter
Connect the phase line according to the electric energy meter: single-phase electric energy meter, three-phase three-wire electric energy meter, three-phase four-wire electric energy meter
Accurate grade according to quasi-electric energy meter: ordinary installation electric energy meter (0.2S, 0.5S, 0.2.0.5.1.0, 2.0 grade) and portable precision electric energy meter (0.01, 0.05, 0.2 grade)
Install and connect according to the electric energy meter: direct connection electric energy meter, indirect connection electric energy meter

Electric energy measurement unit

Active electric energy meter kW · h (commonly known as degree 1kw. The 6th power of h=3.6×10 numerically represents the electric energy consumed by an electrical appliance with a power of 1kw for 1 hour)
Reactive energy meter kvar · h
Character wheel counter window (liquid crystal display window):
The integer and decimal places are in different colors, with a decimal point in the middle; each word wheel has a multiplying coefficient (when there is no decimal point), the LCD display of the multi-function meter has two integers and two decimal places
level of accuracy:
Relative error, represented by a number placed in a circle
Rated current and rated maximum current:
Calibration current: marked on the table as the base current value of the calculated load: I b. Usually, 0.005 times the calibration current is the starting current of the electric energy meter. The greater the calibrated current of an electric energy meter, the smaller the error in the meter's measurement.
Rated maximum current: the maximum current value at which the electric energy meter can work normally for a long time, and the error and temperature rise fully meet the requirements: Imax
Single-phase electric energy meter label: 220V
There are three labeling methods for three-phase meters:
a. Directly connected three-phase three-wire: 3×380V
b. Directly connected three-phase four-wire: 3×380/220V
Electric energy meter constant: the ratio of the relationship between the electric energy recorded by the electric energy meter and the number of turns or pulses of the turntable: r/kWh; imp/kWh
Rated frequency: 50Hz

As a reliable power meter manufacturer, we will provide more sorts of related products for sale, if you have needs, please contact us.

What is the Significance of Smart Energy Meter Applications?(2023年11月27日)

acrel — 2023-11-27T11:27:07+0900

https://www.acrelenergy.com/what-is-the-significance-of-smart-energy-meter-applications.html

Smart energy meters are an indispensable part of the development of a strong smart grid. Promoting the application of smart energy meters is of great significance in terms of product quality improvement, electricity collection construction, and smart grid construction.

1. The smart energy meter application realizes interconnection, interoperability, exchange and automatic assembly line verification

The smart electric energy meter unifies the definitions of terms and functional items of electric energy meters, standardizes the types, functional configuration, appearance, display, material and process requirements of smart electric energy meters, and clarifies the technical requirements, communication methods, test methods, and acceptance of various smart electric energy meters. The standard, coupled with a unified communication protocol, helps to realize the interconnection, interoperability, interchange and automatic assembly line verification of smart energy meters.

2. The smart energy meter application promotes the improvement of product quality

Strictly standardize the technical performance indicators, test methods and acceptance standards of electric energy meters, prompting manufacturers to continuously improve product performance and quality. In addition, after standardizing and unifying basic work such as smart energy meter types, functions, and communication protocols, manufacturers can save a lot of mold opening and operation and maintenance costs, and concentrate on research and development of measurement performance technology and reliability to further improve product quality.

3. The smart energy meter application meets the needs of smart grid construction

Smart energy meters are an important part of the power consumption link of smart grids. Smart energy meters meet the needs of smart grid construction in terms of bidirectional metering, intelligent monitoring, automatic control, and information storage.

4. The smart energy meter application meets the needs of electricity consumption information collection

According to the requirements of the power consumption information collection system for the collection data items, collection cycle and electric energy meter management needs, the types, configuration functions, standardized communication methods and communication protocols of smart electric energy meters are designed, which lays the foundation for speeding up the construction of the electric energy information collection system.

5. The smart energy meter application improves the level of metering management

Standardizing the functions, types and technical requirements of electric energy meters is conducive to optimizing the management process of the whole life cycle of electric energy meters, further improving the electric energy metering technology and management standard system, and improving the management level of metering work.

6. The smart energy meter application promotes the progress of metering technology

The requirements of stepped electricity price, electricity price control, two-way metering, carrier/wireless communication, electricity price calculation, safety certification, alarm output, reliability verification and other requirements have realized the organic combination of measurement, monitoring, communication, control and other technologies, and promoted the continuous development of measurement technology.

7. The smart energy meter application improves the level of high-quality service

Users can directly obtain their own electricity consumption information from the smart energy meter, which greatly improves the user's right to know the electricity consumption information, and provides convenience for users to change the electricity consumption mode and implement effective electricity consumption control; in addition, remote meter reading reduces on-site reading. The workload of the meter also reduces the inconvenience caused to users by on-site meter reading, and the means and level of high-quality service will be further strengthened.

8. The smart energy meter china application reduces operation and maintenance costs

Standardizing the types of smart electric energy meters has changed the situation of various types of electric energy meters, which is convenient to reduce the number of standby meters, facilitate storage, transportation and maintenance, and greatly reduce operation and maintenance costs.

9. The smart energy meter application meets the needs of electricity management

The smart multi function energy meter is an important part of the smart grid. The electricity consumption information such as the electricity, current, voltage, and power factor of the energy meter is an important data source of the smart grid. The time synchronization function of the smart energy meter ensures the synchronicity of electricity consumption information collection, and provides more accurate data support for electricity consumption management and auxiliary decision-making.

If you want to know more about smart energy meter working principle, please visit our website.

The Working Principles of the DC Current Shunts(2023年11月27日)

acrel — 2023-11-27T11:26:30+0900

https://www.acrelenergy.com/the-working-principles-of-the-dc-current-shunts.html

Ⅰ. The dc energy meter working principle

The shunt is actually an accurate resistor with a small resistance value that can pass a large current. When the current flows through the shunt, a millivolt-level DC voltage signal will be generated at both ends of the shunt, causing the pointer of the DC ammeter connected to both ends of the DC shunts to swing, and the reading is the current value in the DC circuit.

The shunt is to divide a small current (mA) to push the pointer of the meter. The smaller the ratio of this small current to the large loop current (A), the better the linearity and more accuracy of the reading of the ammeter.

The actual meter head of the DC ammeter is a standard millivolt voltmeter. The millivolt voltmeter is used to measure the voltage across the shunt, and then the voltage is converted into a current, which is the current we see on the ammeter, which completes the measurement of a large current. The full-scale value of the millivolt voltmeter is 20mV, 30mV, 50mV, 60mV, 75mV, 100mV, 150mV, etc. The general routine is 75mV, then using this voltmeter to measure the current of 20A, it needs to be equipped with a shunt resistor that generates a voltage drop of 75mv when the current flows through 20A, also known as a 75mv shunt.

According to Ohm's law U=IR, the impedance of the DC current meter shunt, DC current shunt circuit = the full-scale voltage of the meter head / the full-scale current of the meter head, for example, the resistance value of the shunt matching a 100A ammeter is 0.00075 ohms, that is, 100A*0.00075 ohms=75mV. The matching shunt resistance of the 50A ammeter is 0.0015 ohms, 5OA*0.0015 ohms = 75mV.

The DC ammeter and shunt are used together.

DC shunt model representation rules: FL-20.5 200A 75mV (model) (accuracy) (current) (voltage drop).

Ⅱ. The precautions for the DC current shunts

1. No artificial contact resistance is allowed at the connection between the cable (or copper bar) of the primary loop of the shunt and the shunt, and the sampling point of the secondary voltage cannot be sampled from the non-sampling point.

2. When two small screws are connected to the signal input terminal of the instrument, pay attention to the polarity of the signal. The end where the current flows into the shunt is the positive terminal, which is connected to the positive input terminal of the signal input terminal of the instrument. The end where the current flows out of the shunt is the negative electrode, which is connected to the negative input end of the signal input end of the instrument.

3. The actual current used (for a long time) is recommended not to exceed 80% of the rated current.

Established in 2003, Acrel electric is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart energy meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

The Functions and Working Principles of Current Transformers(2023年11月27日)

acrel — 2023-11-27T11:25:26+0900

https://www.acrelenergy.com/the-functions-and-working-principles-of-current-transformers.html

A current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side for measurement based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has a small number of turns, which are strung on the current line that needs to be measured.

Therefore, it often has the full current of the line flowing, and the secondary winding has a large number of turns. It is connected in series with the measuring instrument and the protection circuit. When the current transformer is working, its secondary winding is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is small, and the working state of the current transformer is close to short circuit. The flow transformer converts the large current on the primary side into a small current on the secondary side for measurement, and the secondary side cannot be opened.

1. The functions of current transformers

The main function of the current transformer is to convert the large current in the AC circuit into a certain proportion of the small current (the Chinese standard is 5 amperes) for measurement and relay protection.

In the process of power generation, transformation, transmission and distribution, due to different electrical equipment, the current is usually from tens of amps to tens of thousands of safe, and these circuits may also be accompanied by high voltage. Therefore, in order to monitor and measure the circuits of these lines, while addressing the dangers posed by high voltages and high currents, current transformers are required at this time. Electrician's clamp meter, which is a device used to measure alternating current, its clamp is a through-core current transformer.

2. The current transformer working principle

Power generation, substation, transmission, distribution, transmission, distribution and power lines, ranging from a few amps to tens of thousands of amps. In order to facilitate measurement, protection and control, it is necessary to convert the current into a relatively uniform current. In addition, the voltage on the line is generally relatively high, such as direct measurement is very dangerous. Current transformers play the role of current conversion and electrical isolation.

For pointer galvanometers, the secondary current of the split core current transformer is mostly ampere level (such as 5A, etc.). For digital instruments, the sampled signal is generally at the milliamp level (0-5V, 4-20 mA, etc.). The secondary current of the micro-current transformer is milliampere, which is mainly used as a bridge between large transformers and sampling.

Miniature current transformers are also known as instrument current transformers. Instrument current transformers are multi-current ratio precision current transformers used in laboratories, and are generally used to expand the scope of instruments.

The current transformer similar to the transformer also works according to the principle of electromagnetic induction. The transformer converts the voltage, and the current transformer converts the current. The current winding (the number of turns is N1) connected to the measured current is called the firstly winding (or the ordinary winding, the primary winding); the winding connected to the measuring instrument (the number of turns is N2) is called the secondary winding (or the accessory winding, subordinate winding).

Residual Current Operated Relay(2023年11月27日)

acrel — 2023-11-27T11:24:49+0900

https://www.acrelenergy.com/residual-current-operated-relay.html

ASJ series residual current action relays can be combined with low-voltage circuit breakers or low-voltage contactors to form a combined residual current protection device, which is mainly suitable for AC 50Hz, rated voltage 400V and below TT and TN system power distribution lines used to perform electrical circuits Ground fault protection can prevent equipment damage and electrical fire accidents caused by ground fault currents, and can also be used to provide indirect contact protection against personal electric shock hazards.

Current Operated Relay Structure

Current Operated Relay Main Functions
AC contactor or circuit breaker, earth fault protection, and fire protection.
Adjustable range: 0.03A to 30A.
Adjustable range: 0 to 10s.
2DO (warning and alarm
Manual, auto, and remote reset

Current Operated Relay Accessories: AKH-0.66/L series residual current transformer

ASJ Series Residual Current Relay
● Monitoring of Type AC leakage current
● Warning at 50% I△n and alarm at In
● Adjustment of I∆n from 0.03 to 0.5 A
● Adjustment of time delay 0.1 to 0.5s
● One warning relay, one alarm relay
● Local and remote “TEST”, "RESET"

Established in 2003, Acrel power meter is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users.

Factors That Affect the Performance and Use Value of Prepayment Energy Meter(2023年10月07日)

acrel — 2023-09-21T12:58:55+0900

https://www.acrelenergy.com/factors-that-affect-the-performance-and-use-value-of-prepayment-energy-meter.html

Factors That Affect the Performance and Use Value of Prepayment Energy Meter

The prepayment energy meter is a new type of power metering technology that may be utilized in any location. Buildings, retail malls, conference and exposition centers, schools, airports, ports, and factories all employ the prepayment energy meter.

Many users have praised the performance and use value of prepayment energy meter in the last two years. Nevertheless, owing to the presence of several variables, prepayment energy meter measurement accuracy and management have been harmed. What are these issues?

Ⅰ. Environmental factors: the accuracy and administration of prepayment energy meter

Prepayment energy meter is currently used in businesses, schools, hospitals, high-end communities, high-end apartments, and hotels.

The sole variation is the installation environment. Some prepayment energy meters are installed indoors, while others are installed outside. The installation environment, as well as the current and voltage in the environment, will impact the prepayment energy meter's subsequent operating stability.

Ⅱ. Human factors: the accuracy and administration of prepayment energy meter

Although the prepayment energy meter makes our lives easier, we must rely on human administration and subsequent maintenance if we want the prepayment energy meter to last a long time and work reliably.

However, if the prepayment energy meter is not used properly, it will have a direct impact on the performance of the smart prepaid electricity meter for future users.

Furthermore, if a prepayment energy meter is installed incorrectly, it may have issues later on, such as unstable and inaccurate performance. Furthermore, it is advised that relevant power supply departments monitor the functioning of prepayment meter device in the region on a regular basis to ensure that subsequent usage and operation are not harmed.

The market need for intelligent prepayment energy meter has progressively increased in recent years, as people's quality of living has improved. As a consequence, there are more and more prepayment energy meter firms.

It has been discovered that the quality and performance of smart prepaid electricity meter offered on the market differs. It is vital to select a competent and consistent prepayment energy meter manufacturer in order to receive high-quality protection network goods.

Traditional energy metering technology has been phased out in many contexts, and smart prepaid electricity meter has taken its place.

This meter's overall performance and quality have significantly improved. We believe that the preceding explanation of the prepayment energy meter will help you understand what elements will impact the smart prepaid electriciity meter's steady operation in the future.

Our firm is a high-tech company that combines R&D, manufacturing, sales, and support to provide customers with system solutions for energy efficiency management and power safety. "Acrel" has a comprehensive production line that includes everything from cloud platform software to sensors. Please do not hesitate to contact us.

For more information about prepayment energy meter solution and current transformer, please feel free to contact us!

There are many power meter manufacturers, but we are one of the best choices for you.

Wireless Temperature Monitoring System(2023年10月06日)

acrel — 2023-09-21T12:58:16+0900

https://www.acrelenergy.com/energy-meter-for-wireless-temperature-monitoring-system.html

The primary system of power system is generally composed of electrical equipment such as power supply lines (including overhead lines and cables), transformers, bus bars, and switch cabinets. There are a large number of electrical connection points between them. Because the current flows to generate heat, almost all electrical faults will cause the temperature of the fault point to change. For example, overheating of overhead lines, cable joints, cable intermediate connections, cable laying bends, partial discharge of high-voltage cables, dynamic and static contacts, and other connections of high-voltage switchgear, and low-voltage electrical connections are major accidents. Symptoms are also the hardest-hit areas with frequent accidents.

For substations, adopt advanced centralized data receiving and display solutions. A centralized receiving device can receive wireless data from dozens of switchgear cabinets and hundreds of temperature measurement points. The wireless temperature measurement sensor can be fixed at the temperature measurement point. The entire renovation project is much smaller than the existing products. The promotion of temperature measurement systems is of great practical significance. The centralized receiving device has powerful functions and an intuitive display. It can be connected to the main station through 485 communication, which is more suitable for unattended stations.

The temperature measurement data of the substation nodes are all sent to the master station, which requires the master station software to receive, display and analyze. In addition to the conventional functions, due to a large number of temperature measurement points, this project needs to make an innovative design on the man-machine interface to achieve the requirements of intuitive and convenient observation, rapid alarm, and accurate positioning.

This is the general industrial wireless temperature monitoring system.

ModelNAMESPECIFICATIONSPHOTO
ATE100Temperature Sensor62.4*32.4*16mm,Φ13.5mm,
-50°C ~+125°C
Accuracy:± 1°C
Lifetime>5 years
470Mhz,
Open space distance:150m
Installation: bolt fixing
ATE100MTemperature Sensor32.4*32.4*16mm
-50°C ~+125°C
Accuracy:± 1°C
Lifetime>5 years
470Mhz,
Open space distance:150m
Installation:magnetic absorption fixation
ATE200Temperature Sensor35*35*17mm, -50°C ~+125°C
Accuracy:± 1°C
Lifetime>5 years
470Mhz,
Open space distance:150m
Installation:strap binding
ATE400Temperature Sensor25.82*20.42*12.8mm
50°C ~+125°C
Accuracy:± 1°C CT induction of electricity powered
starting current>5A
470Mhz,
Open space distance:150m
Installation: Alloy sheet fixed and powered

AHE100Temperature& Humidity SensorTemperature range -30℃~+85℃

Humidity 10~100%RH
Transmission distance space distance 500m
Transmit frequency 5min
Installation: Din rail
ATC600-CReceiver90*90*38mm
1 channel uplink RS485 Modbus protocol
Receive 240 ATE sensors(ATE100/ATE200/ATE400/)
Installation:35mm DIN rail screws fixed
Power Supply AC/DC 85-265V
ARTM-PnTemperature MonitorMaximum measuring 60 points
Measure all parameters
1 RS485 Modbus
Power supply AC85-265V
ATP0077 inch touch screen1 channel uplink RS485 port

1 channel uplink Ethernet port
High temperature warning with buzzer
Power supply DC24V

For more information about acrel meter and multi circuit energy meter, please feel free to contact us!

Solar PV Meter for Photovoltaic System Solutions(2023年10月05日)

acrel — 2023-09-21T12:57:46+0900

https://www.acrelenergy.com/energy-meter-for-photovoltaic-system-applications/

Solar PV Meter for Photovoltaic System Solutions

As the "dual carbon" goal is proposed and gradually implemented, the development of distributed photovoltaic, which is already showing a good momentum of development, is expected to accelerate substantially. Regarding the "14th Five-Year" photovoltaic development plan, In the next 10 years, the installed capacity of new energy will remain above 110GW. This includes centralized photovoltaic power plants and distributed photovoltaic power plants. Compared with centralized power plants, distributed photovoltaics have no dependence on natural resources such as land. The roofs of various places are the basis for the formation of distributed power plants. Among the options of the carbon neutral solution, distributed photovoltaics are bound to be flexible due to its flexibility.

At present, the two distributed application scenarios in my country are: household photovoltaic on the roofs of vast rural areas and roof photovoltaics of industrial and commercial enterprises. Both types of distributed photovoltaic power stations have developed rapidly this year.

ACREL ACR10R
● Rated voltage: 3X220/380V(400V)

● Rated Current: 80A ,120A, 200A, 300A

● Communication:RS 485 Modbus RTU

● Certificate: CE

AGF-AE-D/200
● US standard

● Rated voltage: AC 120V/208V，240V

● Rated current: AC 100A , 200A

● DIN 35 mm

DJSF1352-RN
● Din rail mounting

● Measure DC 0-1000V

● RS485 communication (Modbus protocol)

For more information about acrel power meter and multi circuit energy meter, please feel free to contact us!

Energy Meter for IOT Cloud Platform(2023年10月04日)

acrel — 2023-09-21T12:56:44+0900

https://www.acrelenergy.com/energy-meter-for-iot-platform-solutions.html

The IoT platform is suitable for power management. The gateway update data to the platform via MQTT TCP HTTP protocols, and can monitor electrical parameters such as current, voltage, active power, and power factor. Acrel iot based electricity energy meter with 485 port can connect to IoT platform via gateway AWT100.

We have demo account in below.
http://iot.acrel-eem.com

ID acrel
password 123456

ADL200
● AC220V

● 10(80)A

● RS485(MODBUS-RTU)

● Set parameters

● LCD display

● kWh Class 1

● DIN 35 mm

ADL400
● AC 3×220/380V

● 3×1(6)A, 3×10(80)A

● RS485(MODBUS-RTU)

● Set parameters

● LCD display

● KWH Class 0.5

● DIN 35 mm

Data Conversion Module AWT100
● Downlink: RS485

● Uplink:4G/WiFi/Ethernet/lorawan/lora

● AWT100-WIFI support a 2.4GHz network

As one of the most professional smart energy meter manufacturers, we provide acrel smart meter, din rail power meter, iot smart energy meter, smart electricity meter using iot and etc. Want to know more, contact us.

Digital Electric Energy Meter VS Electronic Electric Energy Meter(2023年10月03日)

acrel — 2023-09-21T12:56:16+0900

https://www.acrelenergy.com/comparison-of-working-principle-of-digital-electric-meters.html

The digital electricity meter working principle, the input signal is obtained by the traditional transformer PT, CT, after the signal conditioning is carried out through the data acquisition and processing module, the analog signal is collected by the electric energy measurement chip in the special measurement processing system, and the electric energy is calculated. The control unit (Micro Controller Unit, MCU) controls the normal operation of the entire system.

The principle of the digital electric energy meter, the input signal is obtained by the front-end merging unit, the optical signal message conforming to the IEC 61850 protocol, the merging unit realizes analog signal acquisition, the internal optical module of the digital electric energy meter obtains the collected data through the optical fiber, and the internal real-time operation and processing system ( Generally it is FPGA, DSP chip) parsing messages and metering electric energy.

Hardware structure and functional modules of the energy meters

The electronic watt-hour meter uses a dedicated measurement processing system (usually an electrical energy measurement chip), and its internal circuit integrates modules such as A/D sampling, filtering, and electrical energy calculation. The digital electric energy meter adopts a real-time operation and processing system inside to realize functions such as protocol analysis and electric energy calculation.

The difference is reflected in: the electronic energy meter uses a dedicated energy metering chip to calculate the electrical energy. The digital electric energy meter adopts the optical module and MCU to complete the electric energy calculation. The dedicated electric energy metering chip has a built-in digital filter, but this module is generally not available in digital electric energy meters, and the hardware structure of digital electric energy meters is relatively simple.

Signal input form and sampling method of the energy meters

The input of the electronic electric energy meter is connected to the secondary output of the traditional transformer, which is an analog signal. The electric energy metering chip is used inside the electric energy meter to collect the signal to obtain the grid voltage and current parameter data. The output of the digital watt-hour meter input, junction, and unit is a digital message signal. There is no need to sample the signal inside the watt-hour meter, and the sampled value of the secondary side of the power grid is obtained by parsing the message.

The difference is reflected in: the input of the electronic electric energy meter is an analog quantity, and A/D sampling is required. The input of the digital electric energy meter is a digital message, which needs to be analyzed.

Electric energy measurement algorithm of the energy meters

The energy measurement algorithms commonly used in electronic energy meters include windowed interpolation FFT and dot product. The conversion accuracy of the internal A/D module of the energy measurement chip is usually 22 to 24 bits, the sampling frequency is 12.8 kHz, and there is filtering inside the chip. The device can effectively filter out the noise signal and restore the original signal to a high limit. The two electric energy measurement algorithms adopted can meet the accuracy requirements of electric energy measurement.

The input signal of the digital electric energy meter completes A/D sampling in the front-end merging unit. At present, the merging unit is shared by measurement, control, and metering. The conversion accuracy of the A/D module is usually 16 bits, and the sampling frequency is 4 kHz (which will be considered in the third-generation smart substation Special merging unit for measurement and increase the sampling frequency to 12.8 kHz). At the same time, the noise filter is generally not designed in the table. When the load is complicated, the original signal restoration is low, and in the actual operating environment, the message transmission process is affected by external interference. Data will be lost due to bit errors. Existing digital electric energy meters generally use the dot product sum algorithm. Under complex grid load conditions, the accuracy of electric energy measurement needs to be further studied.

In a word, the working principle of digital electric energy meters is quite different from that of electronic electric energy meters. Corresponding to the above differences, the two should be distinguished from three aspects in detection: First, the basic error detection, the basic error of the electronic watt-hour meter is mainly affected by the internal A/D sampling, and the error will vary depending on the external environment and load conditions. , The digital electric energy meter has no A/D sampling, and there is no need to consider the influence of different loads on its error; the second is the sampling value report detection, the digital electric energy meter adopts the message transmission signal, and the sampling value message test experiment should be carried out; the third is the electric energy measurement In terms of algorithm, the structure adopted by the digital electric energy meter is simpler, and the adaptability test of the metering algorithm under different load conditions should be carried out.

As a professional power meter manufacturer, we provide 3 phase energy meter, din rail meter, precision dc current shunts, power meter china and etc. Want to know more, contact us.

Common Problems and Solutions of Multifunctional Power Meters(2023年10月02日)

acrel — 2023-09-21T12:55:39+0900

https://www.acrelenergy.com/common-problems-and-solutions-of-multifunctional-power-meters.html

Meter does not display

First, use a multimeter to measure the voltage value of the input auxiliary power supply. The normal voltage range of the multi-function meter is AC/DC85-265V. You need to confirm it according to the site conditions. If the voltage value exceeds the auxiliary power supply, the meter may be damaged or even burned. If the auxiliary power supply is normal, check whether the auxiliary power supply wiring of the multi-function power meter is properly connected. If the auxiliary power supply is normal and the wiring is in place, the meter has no display. After power off, power on again. If the meter still cannot display normally, please contact the meter manufacturer.

Measurement exception

If the measurement of the multifunction power meter is abnormal, the electric energy meter may be damaged on the one hand, and the fault may be caused by the poor wiring of the instrument or the transformer on the other hand. So how to judge and exclude it?

When the active power P value of the multi-function power meter is negative, and the measurement of electric energy, power and power factor is wrong, it can be eliminated according to the following two methods.

Method 1: Determine whether the wiring of the multi-function instrument terminal is faulty

Under normal circumstances, the phase sequence of the intelligent multi-function power meter is: Ua-Ia; Ub-Ib; Uc-Ic.If the power is negative and the power factor and electric energy measurement are wrong, first check that the phase sequence of the terminals of the multi-function power meter is normal. If the phase sequence is normal, but the meter data is abnormal, please check whether the incoming and outgoing wires of the secondary side of the current transformer are connected correctly.

Method 2: Judge whether the wiring of the incoming and outgoing wires of the secondary side current transformer is faulty

If the active power P value of the multi-function power meter is negative, and the measurement of electric energy, power and power factor is wrong, we first rule out whether it is a wiring fault in the incoming line of the power meter. If the wiring of the incoming terminal of the instrument is normal, we will check whether the wiring of the secondary side current transformer is normal. Under normal circumstances, the connection method of the incoming and outgoing wires of the current transformer: Ia* incoming wire, Ia outgoing wire; Ib* incoming wire, Ib outgoing wire; Ic* incoming wire, Ic outgoing wire.

If the wiring of the secondary side of the current transformer is faulty, the following phenomena will occur:

(1) Active power is negative

(2) Abnormal energy metering

(3) Abnormal power factor

If the above two fault causes are eliminated, but the instrument still has the above fault phenomenon, please contact the instrument manufacturer.

Inaccurate voltage and current measurement

First, check the cause of the inaccurate display of voltage and current, whether the current or voltage magnification set by the instrument is inconsistent with the actual transformer magnification used in the periphery. If it is inconsistent, the user can change the setting according to the actual situation on site. Eliminate the above reasons, carefully check whether the voltage or current wiring is interchangeable or reversed, and then use a multimeter to measure the voltage and current signals to confirm that the normal voltage and current signals are connected.

Established in 2003, Acrel Co, Ltd. (Stock Code: 300286. SZ) is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. "Acrel" smart energy meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

Application of IoT Based Electricity Energy Meter(2023年10月01日)

acrel — 2023-09-21T12:53:56+0900

https://www.acrelenergy.com/application-of-iot-based-electricity-energy-meter.html

Application of IoT Based Electricity Energy Meter

The iot based smart energy meter is a smart metering terminal on the demand side of the smart grid. In the era of the Internet of Things, the electricity meter is no longer an electricity meter in the traditional sense, but has more intelligent functions.

In addition to the basic electricity metering function of traditional energy meters, in order to adapt to the use of smart grids and new energy, smart energy meters also have two-way multi-rate metering, user-side trip/closing control, two-way data communication, and anti-theft. functions, etc., smart energy meters represent the future development direction of energy-saving smart grid end-user intelligent terminals.

1. The IoT based electricity energy meters are widely used

No matter where it is now, the application of iot based prepaid energy meter has become very common, and the era of electricians visiting the door to read the meter and calculate the electricity bill is gradually passing away.

For example, the IC card charge control smart energy meter, the user has an exclusive recharge IC card and needs to use electricity, first go to the power supply department to pay for electricity purchase, when the money circle is deposited in the IC card, the user holds the IC card and swipes the card in the induction area, you can Turn on the power supply and remove the card after powering on. When the remaining power is insufficient, the power will be cut off, and the power supply will not be available until the card is swiped again.

2. The IoT based electricity energy meter is more intelligent

In the era of the Internet of Things, more intelligent remote cost-controlled smart energy meters have also derived more intelligent applications, such as in schools, parks, office buildings, large shopping malls, professional large markets, urban complexes, etc. Pre-sale electricity management.

The remote cost-controlled smart energy meter is connected to the Internet through 470MHz wireless/GPRS/RS485 and other Internet of Things transmission technologies, and supports remote charging of the energy meter through the network, eliminating the need for IC card as a charging medium.

Users do not need to personally go to the power supply department to pay for electricity purchases, but can easily recharge through online payment platforms such as APPs. Users can also check their electricity consumption information at any time through the APP, and adjust their electricity consumption habits according to historical electricity consumption information. Thereby achieving the effect of saving money and protecting the environment.

For a single user, the annual savings in electricity bills may be only a few tens of yuan, but for the entire power industry, the comprehensive use of the Internet of Things can greatly reduce operating costs. Cost savings from automatic meter reading, short-circuit checking, and real-time diagnosis of circuit breaker locations often amount to hundreds of millions of dollars each year.

What's more, by analyzing the electricity demand of consumers during peak electricity consumption, unnecessary new power plant construction can also be avoided, saving billions of dollars every year. Statistics show that the overall savings that IoT based electricity energy meters bring to the electricity industry is 5 to 10 times that of consumers.

The development of the Internet of Things has become the general trend. As equipment suppliers continue to innovate, reduce costs, expand functions, and develop innovative products of epoch-making significance, the influence of the Internet of Things will increase exponentially, constantly changing people's lives, work and the development trajectory of the global economy.

There are many power meter manufacturers, but we are one of the best choices for you.

ARD 2F Intelligent Motor Protection Relay(2023年07月06日)

acrel — 2023-07-06T11:28:15+0900

https://www.acrelenergy.com/products/ard-2-intelligent-motor-protection-relay/

ARD 2F Intelligent Motor Protection Relay

Smart Motor Protector ARD2 Series (hereinafter referred to as Protector) utilizes advanced single chip technology and is featured in the strong anti-interference, stable and reliable running, digitalization, intelligence and networking. The protector can protect the motor from timeout startup, overload, phase failure, unbalance, under-load, earth leakage, blocking, short circuit, external fault and other abnormalities during the running and provide the SOE fault event recorder to help maintenance stuff find causes. It is applicable for coal mines, petrochemical industry, metallurgical industry, power industry, shipbuilding, civil building and other fields. It is equipped with the RS485 remote communication interface and the DC4-20mA analog output, which is convenient to form a network system together with control machines like PLC and PC to realize the remote monitoring of motor.

Technical Parameters of ARD 2F Smart Open Motor Protector
CodeOptional functionCodeOptional function
QStarting control (including KLLeakage protection
function)
K9 circuits of switching inputM4-20mA analog output
TTemperature protectionSUAnti-electric shock function
JAlarm (Programmable output)SRSOE event record
C1 channel of Modbus-RTU communication2C2 channels of Modbus-RTU communication
CP1 channel of Profibus-DP communicationCCP2 channels of communication: Modbus+Profibus
UVoltage function (phase sequence,tEtE time protection
power, power factor)
EpEnergy metering90LDisplay module
UTUtility tunnel
Now the price of temperature & humidity controller is low, if you have needs, please contact us.

As a reliable energy meter china manufacturer, we can offer sorts of three phase energy meter for sale, anything you need, please leave us a message.

AMC72L-E4(2023年07月06日)

acrel — 2023-07-06T11:27:45+0900

https://www.acrelenergy.com/products/amc-three-phase-energy-meter/

three phase energy meters have RS-485 port, Modbus-RTU protocol. Analog output, alarm output, and 3 phase smart meter' s switching input/output can be selected. The 3 phase digital energy meter display voltmeter adjusts the parameters through the panel button, the intuitive display system runs at one time, three rows of digital kwh meter 3 phase display the three-phase value at the same time, the LED digital real-time display, and the instrument can set the display value through the display panel button. Acrel provide types of digital energy meter 3 phase to meet your needs and contact us for the 3 phase energy meter price.

Technical parameter of AMC Three Phase Energy Meter
Phase3 phase 3 wire, 3 phase 4 wire
VoltageAC 3×57.7V/100V(100V)、3×220V/380V(400V)、3×380V/660V(660V)
CurrentAC1A, 5A
Frequency45Hz～65Hz
DisplayLED or LCD
InstallationPanel mounted
AccuracyClass 0.5
Option/CRS485, Modbus-RTU protocol
/K4DI/2DO
/2M2 analog output
/SOEevent record
/HTHDi, THDu, 2-31st harmonic
Power supplyAC/DC 85-265V, DC24V, DC48V

Now the price of acrel power meter is reasonable, if you have needs to buy high quality wireless energy meter, please contact us.

AMC48L-AV(2023年07月06日)

acrel — 2023-07-06T11:27:18+0900

https://www.acrelenergy.com/products/amc-single-phase-voltage-meter/

AMC series single phase voltmeter measure voltage, and the panel mount ac voltmeter support RS-485 Modbus protocol and analog output. The digital ac voltmeter display is clear and intuitive, which can avoid man-made measurement errors and accord with people's reading habits. Contact Acrel, which can provide various kinds of ac electronic voltmeters suitable for many industries, we are pleased to await your inquiry for ac volt meter price.

Technical parameter of AMC Single Phase Voltage Meter
Technical parameterValue
VoltageAC100V, AC380V, AC220V, AC400V
AccuracyClass 0.5
InstallationPanel mounted
Power supplyAC/DC 85-265V
DisplayLED or LCD
Option/CRS485 Modbus-RTU
/Mone channel DC4~20mA output
/K2DI/2DO
/Jalarm

Now the price of acrel smart meter is reasonable, if you have needs to buy high quality 3 phase energy meter, please contact us.

AMC48L-AI(2023年07月06日)

acrel — 2023-07-06T11:26:48+0900

https://www.acrelenergy.com/products/amc-single-phase-current-meter/

As one of the most professional single phase energy meter manufacturers, Acrel can provide various 1 phase ampere meter. AMC series single phase current meter measure current and have RS-485 port, and the single phase smart ampere meter has the features including Modbus protocol and alarm function. With high efficient single phase electric meter factory, If you want to know single phase digital ampere meter price, please contact us.

Technical parameter of AMC Single Phase Current Meter
Technical parameterValue
AC currentAC1A, 5A
Active energyClass 0.5
DisplayLCD or LED
Installation Panel mounted
Option/CRS485 (Modbus-RTU)
/MDC4-20mA, DC0-20mA. DC0-5V
/K2 digital input /2 digital output
/Jalarm
Power supplyAC/DC 85-265V

As a reliable power meter manufacturer, we can offer sorts of multi function energy meter for sale, if you are interested, please leave us a message.

AM5 Medium Voltage Motor Protection Relay(2023年07月06日)

acrel — 2023-07-06T11:25:09+0900

https://www.acrelenergy.com/products/am5-medium-voltage-motor-protection-relay/

Acrel medium voltage protection relays have the protection functions of power distribution system such as line protection, transformer protection, motor protection, capacitor protection, bus tie/incoming line backup automatic switching, etc. AM series undervoltage relay provide guarantee for the reliable and stable operation of the power supply and distribution system.

Technical Parameter of AM5 Medium Voltage Motor Protection Relay
Auxiliary power supplyRated inputAC220V/DC220V,DC110V,DC48V
RangeRated Voltage*(1±20%)
Power consumption≤10W（DC）
Rated voltageRated inputAC100V
Range1~120V
Accuracy±0.5%
Power consumption≤0.5VA
Rated currentRated inputAC5A/1A
Range0.04ln~15ln
Accuracy±0.5%
Power consumption≤0.5VA
FrequencyRated frequency50Hz or 60Hz
Range45Hz~55Hz or 60Hz
Accuracy±0.1Hz
EnvironmentTemperature-10℃~55℃
Humidity5%~95%
Altitude≤4000m
Insulating propertyInsulation resistance＞100MΩ
Dielectric strengthPower frequency voltage withstand 2kV
Impulse voltage±5kV

As one of power meter manufacturers, we can offer sorts of wifi power meter for sale, anything you need, please leave us a message.

Three Phase ADW300(2023年07月06日)

acrel — 2023-07-06T11:24:31+0900

https://www.acrelenergy.com/products/adw300/

Acrel ADW300 wireless smart energy meter can be used for different applications. Acrel ADW300 is three phase wireless smart energy meter with RS485/LoRa/GPRS/4G/WF.

Technical Parameter ADW300
Input voltage3×220/380Vac , 3×380/660Vac
Input current3×1(6)A
Accuracy(active)Class 0.5s
Basic functionmeasure U、I、P、Q、SP、F、Hz
power demand and real-time current
2~31st voltage and current harmonic
Optional function/C: RS485(Modbus-RTU)
/K: 4DI/2DO
/T: four-way temperature measurement
/L : 1 channel residual current
/LR: LoRa wireless communication
/4G: 4G communication
/WF: WIFI communication
333mV access
Rogowski coil (200mV) access
Power supplyAC/DC 85~265V
StandardIEC 62053-22:2003，IEC 62053-21:2003
Dimension93*72*88mm
Weight0.3kg

Now the price of wireless energy monitor for smart meters is reasonable, if you are interested, please leave us a message.

If you want to know more kinds of power meter china, please visit our website.

ADL400(2023年07月06日)

acrel — 2023-07-06T11:23:40+0900

https://www.acrelenergy.com/products/adl400/

Acrel ADL400 3 phase din rail energy meter has the functions of measure U, I, P, Q, S, PF and F. ADL400 can be widely used in EV charging pile application and centralized installation in urban, rural or factory enterprises. ADL400 meet the related technical requirements of electricity meter in the IEC62053-21 IEC61000 and EN50470 standards.

Technical Parameters of ADL400
Reference voltage3×100V, 3× 380V, 3× 57.7/100V, 3× 220/380V
Input current3× 1(6)A, 3× 10(80)A
Frequency45～65Hz
Accuracyactive energy(class 0.5)
Functionmeasure U 、I 、P 、Q 、S 、PF 、F
RS485(Modbus-RTU)
2-31 harmonics
Option/F: multi tariff and demand event record related functions
CertificationMID and CE
Net weight0.5kg
Dimension90mmx72mmx65mm

Now the price of power meter is reasonable, if you have needs, please contact us.

EV Meter for Charging Pile Energy Management System Solution(2022年09月07日)

acrel — 2022-08-31T17:11:54+0900

https://www.acrelenergy.com/power-meter-for-ev-charging/

At present, there are two common charging piles on the market, one is DC charging pile and the other is AC charging pile.

DC charging piles: DC charging piles are fixedly installed in some public places outside electric vehicles, such as residential quarters, residential parking lots, commercial areas, service areas, outdoor parking lots, electric vehicle charging stations and other places. It is a charging device that provides DC power for non-vehicle electric vehicle batteries by connecting to the public grid. Because the DC charging pile can directly charge the battery of an electric vehicle, it is generally powered by a three-phase four-wire system or a three-phase three-wire system, and the output voltage and current can be adjusted in a large range, so it can realize the fast charging of electric vehicles, and the DC charging pile is also, therefore, It is called fast charge.

ADL10-E
● AC 220V

● 10（60）A

● RS485，MODBUS-RTU

● LCD display

● kWh Class 1，Kvarh Class 2

● U、I、P、Q、S、PF、kWh、kvarh

● DIN 35mm

ADL100-ET
● AC220V

● 10（60）A，20（100）A

● RS485(MODBUS-RTU)

● Set parameters

● LCD display

● KWH Class 1

● DIN 35 mm

ADL200
● AC220V

● 10(80)A

● RS485(MODBUS-RTU)

● Set parameters

● LCD display

● kWh Class 1

● DIN 35 mm

ADL400
● AC 3×220/380V

● 3×1(6)A, 3×10(80)A

● RS485(MODBUS-RTU)

● Set parameters

● LCD display

● KWH Class 0.5

● DIN 35 mm

Acrel co ltd provides power meter for ev charging, electric car charging meters, current transformer, precision dc current shunts and etc. Want to know more, contact us.

ADL3000-E(2022年09月06日)

acrel — 2022-08-31T17:11:18+0900

https://www.acrelenergy.com/products/adl3000-e/

Acrel adl 3000 three-phase din rail multifunction 7 moudules 0.5S kwh energy meter with RS485.

Input voltage3×100V, 3× 380V, 3× 57.7/100V, 3× 220/380V
Input current3× 1(6)A, 3×10(80)A
Frequency45～65Hz
Accuracyclass 0.5s
Functionmeasure U 、I 、P 、Q 、S 、PF 、F
forward and reverse energy measurement
Option/C: RS485(Modbus-RTU)
/F: multi tariff (shares) energy
/K: 1DI/1DO
/2C: the second channel RS485(Modbus-RTU)
/T: three channels temperature measurement(NTC)
/H: 2-31st harmonic
Net weight0.3kg
Dimension127mmx88mmx70mm

As a professional energy meter factory, we provide adl 3000, multi circuit energy meter, precision dc current shunts, acrel meter and etc. Want to know more, contact us.

ADL200(2022年09月05日)

acrel — 2022-08-31T17:10:49+0900

https://www.acrelenergy.com/products/adl200/

ADL200 single phase electric meter is designed for single phase active energy measurement on low voltage system, in the same time it can measure the electrical parameters like voltage, current, power and so on. There is also rs485 energy meter can be chosen. This electricity meter has advantages of smaller volume, high precision, good EMC, easily installing etc. ADL200 meet the related technical requirements of electricity meter in the IEC62053-21 IEC61000 and EN50470 standards.

Input voltageAC220V
Input current10(80)A
Accuracyclass 1
Functionmeasure U 、I 、P 、Q 、S 、PF 、F
RS485 MODBUS-RTU
2-31 harmonics
Option/F: multi tariff and demand event record related functions
with MID certification
Net weight0.5kg
Dimension90mmx36mmx65mm

As a professional power meter manufacturer, we provide 3 phase energy meter, din rail power meter, single phase energy meter with rs485, energy meter with rs485 modbus, chinese power meter and etc. Want to know more, contact us.

ADL10-E(2022年09月04日)

acrel — 2022-08-31T17:10:23+0900

https://www.acrelenergy.com/products/adl10-e-din-rail-electric-meter/

ADL Series Energy Management Din Rail Kwh Meter. Acrel strictly controls and manages all aspects related to din rail electric meter quality, and establishes scientific inspection standards to ensure the continuous and stable production of qualified din rail mounted electricity meters.

Input voltageAC220V
Input current10(60)A
Accuracyclass 1
Functionmeasure U 、I 、P 、Q 、S 、PF 、F
forward and reverse energy statistics
Optional function/C: RS485 MODBUS-RTU
Net weight0.1kg
Dimension18mmx89mmx70mm

As a professional power meter manufacturer, we provide 3 phase energy meter, din rail meter, precision dc current shunts, din power meter, din rail power meter wifi, power meter china and etc. Want to know more, contact us.

AC Split Core Current Transformer(2022年09月03日)

acrel — 2022-08-31T17:09:54+0900

https://www.acrelenergy.com/products/ac-split-core-ct/

Acrel split core ct manufacturer has rich experience, whose product has the advantages of small size, high accuracy, strong load capacity, easy installation, etc. They save manpower, material resources, and financial resources and improve the efficiency of users.

TypeCurrent ratioHole diameter

K-Φ105A/1.25mA10mm
(10-20)A/5mA10mm
(40-60)A/20mA10mm
K-Φ16(40-100)A/20mA16mm
100A/40mA16mm
K-Φ24(100-250)A/40mA24mm
200A/100mA24mm
400A/100mA24mm
K-Φ36(300-600)A/100mA36mm
400A/40mA36mm
600A/75mA36mm
K-Φ24(150-200)A/5A24mm
(250-300)A/5A24mm
K-Φ36(300-400)A/5A36mm
(500-600)A/5A36mm
K-Φ50(600-700)A/5A50mm
(800-900)A/5A50mm
1000A/5A50mm

As a professional power meter manufacturer, we provide 3 phase energy meter, sct current transformers, split current transformer, split ct, split core ct, wireless energy meter and etc. Want to know split core ct price or more, contact us.

ACREL ACR10R(2022年09月02日)

acrel — 2022-08-31T17:09:28+0900

https://www.acrelenergy.com/products/acrel-agf-ae-pv-solar-inverter-energy-meter/

3 phase energy power meter with 3 CTs for the solar storage system. It is suitable for applications such as the power monitoring of grid-connected cabinets for distributed photovoltaic power cabinets and energy demand management. It boasts of no need for bus removal, easy connection, and safe construction, saving reconstruction cost and raising efficiency for the user.

Technical Parameters of ACR10R-D16TE4
Acrel ACR10R-D16TE4 PV/Solar Inverter Energy Meter Dimension
How to wire an Acrel ACR10R-D16TE4 PV/Solar Inverter Energy Meter
Model no.PhotoRelated voltageInstallationBasic FunctionCurrent Specification
ACR10R-D10TE AC100V or 400VDin 35mm●single phase
●LCD display
●RS485 Modbus
●Accuracy 0.5
●Power supply AC 85-265V or DC 100-350VD10: 80A
D16: 120A
D24: 200A
D36: 300A
ACR10R-D16TE
ACR10R-D24TE
ACR10R-D36TE
ACR10R-D10TE43×220/380V(400V)●three phase
●LCD display
●Accuracy 0.5
●RS485 Modbus
●Power supply AC 85-265V or DC 100-350V
As one of the most professional smart energy meter manufacturers, we provide three phase energy meter, precision dc current shunts and etc. Want to know acrel acr10r installation manual or more, contact us.

Products(2022年09月01日)

acrel — 2022-08-31T17:08:50+0900

https://www.acrelenergy.com/products/

Types of Acrel Smart Meter
Energy Meters
Acrel energy meter can measure electrical parameters of single-phase and three-phase power grids, including current, voltage, power, power factor, frequency, etc.

Current Transformers
Acrel current transformer has the advantages of small size, high precision, strong load capacity, and convenient installation, which is mainly used for power operation and transformation.

Power Monitoring And Controlling
Acre monitoring controller products can mortar temperature and humidity, protect moton and monitor the joint's temperature, etc.

Medical IT Isolated Power Panels System
The medical IT system can continuously monitor the insulation resistance of the IT system ((unearthed systems)) and give an alarm when it is lower than the response value.

Smart Gateways
Acrel gateway supports data collection of serial MODBUS RTU protocol and communicates with acre server through acre platform protocol.

Energy Meter Application
Acrel power & energy meters are widely used in PV inverters, charging piles and mobile base stations, etc.

Acrel Products Features
We are a professional energy meter manufacturer.
Acrel Products Features
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Our company established in 2003 and stock code is 300286.SZ in China.
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We provide professional energy meter solutions for our customers.

We have smart motor control and protection solution, energy management system, prepaid solution, photovoltaic system solu-tion, energy consumption monitoring solution for base station and charging pile energy management system solution etc.
As a professional power meter supplier, acrel provides 3 phase energy meter, china power meter, power meter for sale and etc. Want to know types of smart energy meter or electric meter price, contact us.