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Flameproof and intrinsically safe Low pressure vacuum AC Soft starter QJR-400(200)/1140(660)

Suitable for underground coal mine in explosive environment, in rated frequency 50Hz, rated voltage 660V, 1140V, 380V, rated current to 630 (500, 400) A and below three-phase neutral point ungrounded line, The three-phase squirrel-cage motor of crusher, transfer machine, emulsification pump, grouting machine, belt conveyor and water pump is carried out heavy load soft start, current limiting start, pump control, soft stop, single soft start and stop, multi-machine sequential soft start and stop control and protection, and can be reversed (reversible) when the motor stops running.

Keywords:

Flameproof and intrinsically safe Low pressure vacuum AC Soft starter QJR-400(200)/1140(660)


DESCRIPTION

Product use

Suitable for underground coal mine in explosive environment, in rated frequency 50Hz, rated voltage 660V, 1140V, 380V, rated current to 630 (500, 400) A and below three-phase neutral point ungrounded line, The three-phase squirrel-cage motor of crusher, transfer machine, emulsification pump, grouting machine, belt conveyor and water pump is carried out heavy load soft start, current limiting start, pump control, soft stop, single soft start and stop, multi-machine sequential soft start and stop control and protection, and can be reversed (reversible) when the motor stops running.

Connected with KJ series underground coal mine power grid monitoring system, it can realize remote automatic control, monitoring and monitoring of power equipment, and realize modern management such as unattended substation.

Main feature

The shell adopts advanced and reliable translation quick-opening structure, the body adopts drawer type movement, small size (modular), easy to operate and maintain;

Using high-performance digital signal processor as the control core, advanced electronic voltage transformer high-precision sampling, improve the reliability and safety of a variety of soft start modes (such as: current limiting mode, constant torque, voltage mode, double ramp, pump control, etc.), to meet the needs of different equipment in different fields;

With overload, short circuit, leakage, undervoltage, overvoltage, undercurrent, three-phase current unbalance, lack of phase, phase sequence protection, thyristor overtemperature, insulation monitoring and other protection functions;

In soft starting, it has the advantages of small starting current, stable and reliable starting speed, and small impact on the power grid, which reduces the damage to the equipment. When starting directly, the soft starter has all the functions of the magnetic starter and the integrated protection function of the motor;

System friendly Chinese man-machine interface, convenient user parameter setting and fault diagnosis;

RS485, CAN, Ethernet interface, 4G/5G/WIFI can be configured to communicate with the coal mine power grid monitoring system, with telemetry, remote control, remote control, remote message, remote viewing and other functions to achieve unattended substation.

Main technical parameters

 

Product Model QJR- □/1140(660)
Rated voltage (KV) 1140、660、380
Rated current (A) 200、400、500、630
Soft lifting system Current limiting mode, voltage ramp, voltage ramp ten current limiting, voltage ramp + jump, frequency modulation soft start, constant torque, etc
Starting torque 0~ 100% adjustable
Starting time (S) 1~ 180 adjustable
Initial voltage 10 ~50% adjustable
Current limiting starting 200 ~600% adjustable
Jump start pulse (S) 0.1~1
Operating frequency of working system 30 Times/hour
Cooling mode Natural cooling
Overall dimensions (width × height × depth)(mm) 400A:840×950×740      630A:950×950×850
Weight (kg) 400A:260     630A:400

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Longyuan Xinke Electric Co., Ltd


+86-391-6836868

+86-391-2193665

Add:Zone B, Tiantan Venture Park, High tech Zone, Jiyuan City, Henan Province

Tel:+86-391-6835588

Email:lyxkdq@163.com

 

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Who are we?

The company is committed to providing advanced technology, stable quality, safe and reliable mining explosion-proof electrical equipment and automation systems for the mining industry. The company's products cover nearly 100 specifications and models of various high and low voltage switches in coal mines, and are suitable for various application scenarios in Electrical substation, roadways, and mining faces.

Longyuan Xinke Electric Co., Ltd

+86-391-6836868

+86-391-2193665

Add:Zone B, Tiantan Venture Park, High tech Zone, Jiyuan City, Henan Province

Tel:+86-391-6835588

Email:lyxkdq@163.com

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