Application 

QJZ-2*80(120、200）/1140(660、380)SF Flame-proof and Intrinsic-safety Vacuum Electromagnetic Starter with Dual Power for Fan (hereinafter: starter) is applicable to be used to start, reverse and stop the contra-rotated fans in the coal mine or the place where is full of methane, coal dust or explosive gas at the power supply net of 50 Hz, rated current 4×200A and voltage 1140V/660V/380V.

Model implication  

Features 

Adopt HR-300FJ comprehensive protector, have high precision data processing and advanced protection Algorithm, high protection precision, quick reaction speed.

Have multi-protection-functions such as electricity leakage closedown, undervoltage, overvoltage, three phases imbalance, overload, short circuit, loss of phase, wind electricity alarm etc.，Completed protection functions.

Adopt modularization design, reasonable placement, simple structure, easy to use and maintain, main electric circuit adopt vacuum connector, no electric curve, long life time, high reliability,

Have software and hardware self-check function, if any problem, system will feedback relative error information, and changeover duplicate power, auto-changeover main and spare flow fan according to requirements.

Switch is prepared to 4 kinds working models, which are master/slave equity, master precession, master/slave rotation, stand-alone use.

Have working state indication function, when operating it indicate current time, three-phases current, power grid voltage, insulation resistance (opening standby), wind electricity closedown, operation state (open/close brake) and error information.
 

Main technical parameters