Mining explosion-proof and intrinsicallysafety type two-speed double-loop vacuum electromagneticstarter

QJZ-2x200/1140(660)S

I. applicable scope

the device is used in coal mines containingexplosive gas (methane) and coal dust. in the three-phase neutralpower supply system with rated voltage 660v or 380v, AC 50Hz, ratedcurrent 30A or 60A, it can control the startup, stop or two speedswitch control or three-phase asynchronous motor ordual-winding motor closely or remotely, and can change the phasesequence after the load motor stops.

II. product feature 

1. the main circuit adopts vacuum contactor, havinglonglife and reliable performance.

2. using self-developed microcomputer monitoringdevice, comprehensive functions, stable and reliable.

3. can be used singly or combined with two normalstarter QJZ-200, or used as a two speed switch for single orcombination use, to reduce the lines of electrical connections,more convenient.

4. having a RS485 interface, realizing the fourdistance functions: remote measurement, remote singaling, remoteregulating, remote control, becoming an important part of digitizedmines.

5. using simple control lines and the fast-opendoor structure, easy to maintain.

III. Technical parameters

model No.  QJZ-2x200/1140(660)S

rated voltage: 660V/1140V

rated current: 400A

the max. power of control motor: 660V/340KW,1140V/590KW

Mine Explosion-proofintrinsically safety Tape Two-speed and Dual -loop VacuumElectromagnetic Starter