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 explosion proof vfd with enclosures

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  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 Vfd Drive Hoist, Electric Driving, Coal Mine Vfd, Coal Mine Explosion Proof Vfd, Explosion Proof Vfd.