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Flameproof and intrinsically safe high pressure vacuum AC soft starter QJGR-400/3.3 for mine

It is suitable for heavy load soft starting of three-phase AC high voltage motor with rated frequency 50Hz, rated voltage 10kV, 6kV, 3.3kV and rated current up to 400A in coal mine in explosive environment. It can meet the control requirements of different load objects such as pumps, fans, belt conveyors, scraper conveyors, air compressors, and feeders. It is a high-tech product integrating high-voltage vacuum electromagnetic starter, all-digital microcomputer speed regulation technology, and optical fiber isolation technology. The unique "S" curve makes the soft starting have the advantages of small starting current, adjustable starting speed balance, stable and reliable starting performance, and small impact on the power grid and institutional equipment. 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.

Keywords:

Flameproof and intrinsically safe high pressure vacuum AC soft starter QJGR-400/3.3 for mine


DESCRIPTION

Product use

It is suitable for heavy load soft starting of three-phase AC high voltage motor with rated frequency 50Hz, rated voltage 10kV, 6kV, 3.3kV and rated current up to 400A in coal mine in explosive environment. It can meet the control requirements of different load objects such as pumps, fans, belt conveyors, scraper conveyors, air compressors, and feeders. It is a high-tech product integrating high-voltage vacuum electromagnetic starter, all-digital microcomputer speed regulation technology, and optical fiber isolation technology. The unique "S" curve makes the soft starting have the advantages of small starting current, adjustable starting speed balance, stable and reliable starting performance, and small impact on the power grid and institutional equipment. 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 sliding quick-opening door structure, drawer type movement frame, car plug-in structure, supporting mechanical locking structure to open the door] before the main loop car is separated from the power supply, there is an obvious visible fracture, and it is safer after opening the door; Easy to repair and maintain; Set an independent secondary connection chamber, easy connection, multiple external terminals, to meet a variety of wiring needs of users;

The soft starting movement adopts the original imported controller, advanced power electronic components and full digital speed control technology, which can realize the closed-loop control of current and speed and accurately control the starting current. And the use of international advanced semiconductor full shield isolation technology, greatly increase the anti-interference ability of soft start;

High performance digital signal processor as the control core, advanced electronic voltage transformer high precision sampling, improve the reliability and safety; A variety of soft starting 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;

Adopt unique soft lifting device and intelligent bypass double protection; The bypass protection system is equipped with independent microcomputer integrated protection system. The bypass protection adopts XK-800CP-F intelligent high-voltage anti-tripping protection device. The bypass protection device is not integrated with the soft start controller, independent from the soft start protection, and does not interfere with each other, and the protection performance is more stable.

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;

The friendly Chinese man-machine interface of the system is convenient for user parameter setting and fault diagnosis. When internal fault occurs, the high voltage can be stopped and self-detection can be carried out through the built-in low voltage test system.

According to the needs of users with high-voltage vacuum electromagnetic starter to achieve - tow two, one tow three modes;

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 QJGR- □/10 QJGR- □/6 QJGR- □/3.3
Rated voltage (KV) 10 6 3.3
Rated current (A) 50、100、150、200、250、300、400
Power range (kW) 100~3000
Starting torque 0-100% adjustable
Starting time (S) 1~120 adjustable
Initial Voltage 10 ~ 50% adjustable
Current Limit Start 100 ~400% adjustable
Overload capacity 500%, 30S; 120% overload, long-term continuous operation; Pulse jump start: 100%~600%, 0.1-10S;
Rated short-time withstand current 50
Contactor closing current (A) 4000
Contactor breaking current (A) 3200
Working system operation frequency 30 times/hour
Cooling method natural cooling
Overall dimensions (mm) (width × high × Deep) 1525×1540×1800
Weight (kg) 1200

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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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