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ZBT Series Mining Explosion Proof VFD 

Introduction

ZBT series of mining explosionproof VFD is suitable for the place with explosive gas and dust. the product has 380V/660V, 1140V and other voltage grades, which meet the high performance of  two quadrant and four quadrant speed regulation requirements for three-phase ac motor with 60-1250 kW power range .

This product has accumulated more than 10 years of research results of frequency conversion technology and over 30 years of industry experience, it is high tech product specially developed for the mining industry which has the requirements of heavy load, large power, poor use conditions etc.

Working conditions:

1. altitude less than 1000m ( above sea level need to reduce capacity use);

2. ambient temperature (-10~40)℃;

3. ambient relative humidity is not greater than 95% (25℃);

4. mines with explosive gases (methane) and coal dust;

5. no strong vibration or shock;

6. No corrosive gases which could damage metals and insulating materials;

7. No water droplets and infiltrating;

8. pollution grade: grade 3. 

 

 Table 1 Basic Parameters of Mining Explosion Proof VFD

Item

Parameters

Voltage

3AC 380V、660V、1140V±10%

Power

60-1250kW

Power frequency

50Hz ±5%

Control mode

Voltage frequency, open loop vector, close loop vector

Start torque

150%-200%Te

Overload capacity

150%le/60s，200%le/immediate

Output frequency

0-300Hz

Output voltage

0-380V/660V/1140V

cooling method

Hot pipe+ forced air cooling

Protection grade

IP54

Structure

Fast open door, modular

 

Product characteristics

1. Large torque:
Low speed with large torque, smooth start, small mechanical impact.
2. Low waste:
Low frequency feedback control mode at rectifier side, small machine temperature rising, with less waste.

3. Low harmonics:

Special filter design, low harmonic content with less interference.

4. High reliability:

Large margin, long service life design, stable and reliable operation.

5. High Security:

Perfect protection function, zero speed with full torque output, redundant safety protection.

6. Easy to maintain:

Fast open door, modular structure, small size, compact structure for easy installation, use and maintenance.

 

Table 2 Mining explosion proof VFD specification

 

Voltage(V)

Power(kW)

Dual quadrant

 Four quadrant

Dimension W*H*D(mm)

Mark

660

60~90

1BP

1DK+1BP

DK：717*919*530

BP：717*919*1030

1.Box specification: the DK is a filter reactor. BP for frequency conversion box, containing rectifier and inverter. ZL is rectifier box; NB is inverter box; LB is filter box;

1、2.The box size of the same specification product is the same, all boxes adopt fast door structure

110~250

DK：890*1150*691

BP：890*1270*1296

315~630

DK：1190*1401*790

BP：1190*1442*1348

710~800

1ZL+1NB

1DK+1ZL+1NB

DK：1190*1401*790

ZL/NB：1190*1442*1348

1140

110~250

1BP+1LB

1BP+1LB

DK：1190*1401*790

ZL/NB：1190*1442*1348

315~400

1DK+1BP+1LB

500~630

710~1250

1ZL+1NB+1LB

1DK+1ZL+1NB+1LB

 

Huafei Company could provide complete Mining Explosion Proof Variable Frequency Drives, include Electric Driving, Coal Mine Vfd, Coal Mine Explosion Proof Vfd, Explosion Proof Vfd, Vfd Drive Hoist, Single Quadrant Vfd Drive.

 
https://www.intelligentmine.com/ac-drive/