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/