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.
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