China Z Mining Explosion-Proof Soft Starter QJR-120

General
QJR-120(80/1140(660, 380)Z mining explosion-proof and intrinsically safe type AC soft/direct starter is applicable in AC 50Hz distribution system rated voltage of 1140V, 660V or 380V and rated current of 120A in underground coal mines. with explosive and dangerous gas(methane) and coal dust, it is used to control the direct start and stop, soft starter and stop of three-phase squirrel-cage asynchronous motor in local or remote distance. It is a ideal new generation to replace traditional star-delta starter and auto-transformer starter.
Feature
1. Liquid crystal Chinese display for each parameter with simple and straightforward setting and operation
2. The core adopts advanced totally digital transmission controller of 16 digits single chip
3. Currrent-limiting start, voltage-ramp start, torque control, torque accelerated jumping start and other start modes
4. Self-check protective function of short circuit, loss of phase, leakage lockout, over voltage, over current, etc.
5. High performance of reliability and anti-interference with very high voltage adaptability and high anti-interference ability of power supply.

Rated voltage(V)1140, 660, 380Rated current(A)120, 80Frequency(Hz)50Max. time of current overloadIt' s adjustable under 6 timesStart time (s)adjustable(max. 60)Start acceleration (m/s² ) 0.1≤ a≤ 0.3 Cooling modenatural coolingLeakage lockout value(KΩ )
40+20%(1140V), 22+20%(660V), 7+20%(380V)