QJR-400(315, 200)/1140(660) Mining Explosion Proof Intrinsic Safe AC Vacuum Soft Starter

QJR-400(315, 200)/1140(660) Mining Explosion Proof Intrinsic Safe AC Vacuum Soft Starter

Use
This starter is used for large and medium-sized drive equipment in the foul environment of large load such as coal mine, coal separating plant and port where are filled with explosive gas (methane) and coal dust, etc. In power supply system of AC 50Hz, voltage 1140V, 660V or 380V, it can be used for soft start, current limiting start, full-voltage start, natural stop and soft stop in three-phase squirrel-cage asynchronous motor(0~400A). The starter is designed with various protection functions such as phase protection, under-current and over-current protection, electronic thermal overload protection, imbalance current protection and so on.

Meaning of type

Technical descriptions
1.Adopts advanced microprocessor (including inspection module, protection module and control module) which has features of advanced technology, complete function, stable performance, strong anti-interference capability and reliable operation, etc.
2.Adopts advanced power electronic components to achieve double close loops control of current and speed; the system has functions of soft start,soft-stop, sudden pulse start, start inspection , RS232 communication and so on.
3.Voltage and current data of motor will be displayed.
4.With complete self-diagnose function and protection function, when it starts or stops, has protection functions of temperature, under-voltage, over-voltage, under-current, phase loss, line fault, stall, leakage, thyristor fault etc. \ Above protection functions ensure soft starter is more reliable when it meets various interference and fault signals come from inside or outside.
5.Alarm function corresponds with fault type, which greatly reduces the workload of maintenance and repair.
6.Simple structure, easy for installment and operation. It can be controlled locally as
well as remote control by programmable logic controller(PLC) or other equipments.
7.Communication interface of RS-485 or CAN is available.

Technical data

Type

Rated current (A)

Rated voltage (V)

Time for start (S)

Start voltage (V)

Times of limit current

Motor power (kW)

External diameter of cable(Φmm)

Dimension    W×H×D

(mm)

Weight (kg)

Main circuit

Control circuit

QJR-400

400

1140

Continuous adjustable time with range

of 2s -60s

20-100%

of rated voltage

1-8 times of rated current

500

42~78

9~23

850×1020×700

400

660

340

380

200

QJR-315

315

1140

380

660

250

380

160

QJR-200

200

1140

250

660

170

380

100