Mining Explosion-proof And Intrinsically Safe Type Two-speed Double-loop Vacuum Electromagnetic Starter

We are engaged in exporting and supplying excellent quality Mining Explosion-Proof And Intrinsically Safe Type Two-Speed Double-Loop Vacuum Electromagnetic Starter to our valuable clients in Hefei, Anhui Province, China.
1. Applicable scope:-
The device is used in coal mines containing explosive gas (methane) and coal dust. In the three-phase neutral power supply system with rated voltage 660v or 1140v, AC 50Hz, total rated current 400A, it can control the startup, stop or two speed switch controlA A or three-phase asynchronous motor or dual-winding motor closely or remotely, and can change the phase sequence after the load motor stops.

2. Product features:-
1. The main circuit adopts vacuum contactor, having long life and reliable performance.
2. Using self-developed microcomputer monitoring device, comprehensive functions, stable and reliable.
3. Can be used singly or combined with two normal starters QJZ-200, or used as a two speed switch for single or combination use, to reduce the lines of electrical connections, more convenient.
4. Having a RS485 interface, realizing the four distance functions: remote measurement, remote signaling, remote regulating, remote control, becoming an important part of digitized mines.
5. Using simple control lines and the fast-open door structure, easy to maintain.

3. Technical parameters:-
Model No.A A QJZ-2x200/1140(660)S
Rated voltage: 660V/1140V
Rated current: 400A The max. Power of control motor: 660V/340KW, 1140V/590KW