Mine flameproof and intrinsically safe combined frequency converter

Suitable for coal mine AC 50HZ, rated voltage 660 / 1140V level of the grid,specifically for permanent magnetsynchronous electric roller drive. Power range : 660V inverter power 2x55 2x250KW, 1140V inverter power Mine flameproof and intrinsically safe combined frequency converterProduct characteristics

2x55- 2x400KW, the product has the following characteristics: 

modular explosion-proof combined inverter was designed for coal mine site conditions, specifically for permanent magnet synchronous electric roller control. 

 Inverter has two independent output circuits, so it can run stand-alone or masterslave operation. 

 The input side has a filter reactor. The DC circuit adopts a non-inductive design. The inverter trigger signaladopts optical fiber isolation to improve the antiinterference of the system. 

 Control components are designed to be modular, has greatversatility and saves spare parts storage ; modules are connected by AMP quick connectors for easy replacement andmaintenance. 

 It is directly controlled by torque,has high control accuracy, fast dynamic response, can output not less than 2.2 times the rated orque and is suitable for heavy load starting occasions. 

 Functions of overload, overvoltage, undervoltage, phase loss, overheating, power imbalance, short circuit, leakageblocking, grounding protection andpower failure recording are provided.. 

Operation parameters, data curve, fault information, historical fault, parameter modification are displayed on the 10.4 inch display which is equipped on the inverter. 

According to the mining site, water cooling or air cooling two kinds of heat dissipation can be used in the inverter.