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Mine flameproof and intrinsically safe reversible vacuum AC soft starter

This soft starter is suitable for coal mines containing explosive gas (methane) and coal dust. In AC 50Hz, voltage 1140V or 660V, neutral point ungrounded power supply system, perform various forms of soft starting (such as current limit, voltage ramp and power torque ramp for three-phase squirrel cage motors with currents below 200A and 400A) ) . It also has perfect protection function and fault display function, which greatly reduces the troubleshooting time.
  • Brand:

    WANTAI
  • Item NO.:

    QJR-400/1140(660)N
  • Goods Stock:

    1

Application

QJR-200, 400/1140(660)N mine flameproof and intrinsically safe reversible vacuum AC soft starter (hereinafter referred to as soft starter) is a new generation of high-tech products developed and produced by the latest technology of BENSHAW. , and its control units are all original Benxiu products. It adopts advanced microprocessor and power electronic control technology, realizes the soft start of AC motor, eliminates mechanical and electrical shock to the greatest extent, and prolongs the service life of the equipment. It is an ideal update for hydraulic coupling and other motor starting equipment. Replacement product. It has the characteristics of advanced technology, safe and reliable work, convenient maintenance, large starting torque and long service life, and its technical performance has reached the international advanced level.

Features
English LCD display.
Online protection monitoring.
Programmable low speed jog control.
The parameter panel is adjustable.
Dual parameter control function.
RS485 serial communication function.

Explosion-proof type: mine explosion-proof and intrinsically safe

Explosion-proof mark: Exd[ib] I Mb

Specifications

Rated working voltage: AC 1140V, 660V.
Rated working current: (400A) 1A~400A, (200A) 1A~200A, the current setting step is 1A.
The maximum power of the motor controlled when the rated voltage is 1140V and η*cosφ=0.75: (400A) 590kW; (200A) 296kW.
The maximum power of the motor controlled when the rated voltage is 660V and η*cosφ=0.75: (400A) 340kW; (200A) 171kW.
Control loop voltage: DC12V.
Maximum current overload multiple during soft start: adjustable below 8 times.
 Rated frequency: 50Hz.
Soft start time: 1~60s; (Because the thyristor inside the soft starter is cooled naturally, the soft start time is generally set between 6~15s, so as to avoid the damage of the thyristor caused by heating for a long time!).
Starting interval times: no more than 12 times per hour.
Kick start pulse time: 0~10s.
 Kick start pulse current: 100~800%.
Current limit: 0.5~8Ie.
Starting voltage: 0~100%Ue.
Cooling method: natural cooling.
 Communication method: RS485 serial communication.
Intrinsically safe parameters: U0: AC22V/DC12V; I0: 80mA/30mA.


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