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Flameproof and intrinsically safe vacuum Electromagnetic Starter QJZ-400(315)/1140(660)

Suitable for underground coal mine in explosive environment, in rated frequency 50Hz, rated voltage 1140V, 660V, rated current 630A and below three-phase neutral point ungrounded power supply system, The starting and stopping of the three-phase AC asynchronous motor of shearer, scraper conveyor, crusher, transfer machine, emulsion pump, spray pump, belt conveyor and other equipment are controlled and protected, and can be reversed when stopped. 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 vacuum Electromagnetic Starter QJZ-400(315)/1140(660)


DESCRIPTION

Product use

Suitable for underground coal mine in explosive environment, in rated frequency 50Hz, rated voltage 1140V, 660V, rated current 630A and below three-phase neutral point ungrounded power supply system, The starting and stopping of the three-phase AC asynchronous motor of shearer, scraper conveyor, crusher, transfer machine, emulsion pump, spray pump, belt conveyor and other equipment are controlled and protected, and can be reversed when stopped. 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 the translation quick-opening structure, small size (the interior adopts the modular design), easy and fast operation;

All Chinese, LCD real-time display system three-phase voltage, three-phase current, power factor, active power, reactive power, electrical degree, insulation resistance, switching state, fault information and other parameters;

The integrated protector adopts advanced microprocessor and large-capacity new chip, with high-precision data processing and advanced protection algorithm, high protection accuracy and fast response speed;

With short circuit, overload, overvoltage, undervoltage, three-phase imbalance, phase break, leakage block, wind power block, gas block and other protection functions;

Three voltages (1140V, 660V, 380V) integrated design, a wider range of application;

With water level detection control device and water level probe, can set high, middle and low water level to achieve automatic drainage function, especially suitable for centralized control and protection of several small pumps;

With pilot, program, network (RS485 and Ethernet) control, flexible and convenient;

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.

The main characteristics of hierarchical blocking

It has all the functions of ordinary vacuum electromagnetic starter;

The unique design of double flameproof connecting cavity and hierarchical locking is adopted. The connecting cavity of the starter is designed into two independent flameproof connecting cavity of power supply and load outlet. The main purpose is to open the load connection chamber of the starter and the following associated equipment during maintenance, instead of opening the power connection chamber, so as to avoid the power failure of the associated electrical equipment controlled by the mechanical and electrical blocking device which automatically cuts off the upper power supply, and reduce the power failure range as far as possible. The mechanical and electrical blocking device cuts off the upper power switch, and the upper power supply can not be powered on at the same time, ensuring that the three wiring terminals of the power supply connection chamber are not charged;

When any connecting cavity is opened when the starter is charged, the switch can be powered off and locked by the mechanical and electrical blocking mechanism before the connecting cavity fails to explode. If the load side locking cover of the connecting cavity is opened, the starter is powered off and locked, and the upper switch of the power side locking cover of the connecting cavity is opened and locked. It completely eliminates the possibility of accidents caused by illegal and misoperation of opening the power supply inlet cavity and load outlet cavity cover plate caused by electric spark detonating gas or personnel electric shock.

Main technical parameters

 

Product Model QJZ- □/1140(660)  QJZ- □/1140(660)F
Rated voltage (V) 1140、660、380
Rated current (A) 30、60 80、120 200 315、400 500、630
Hierarchical blocking function not have have have have not have
Control mode Local control, remote control, water level control, communication control
Intrinsic safety parameters Uo: 15V AC/7V DC lo:20mA AC/40mA DC
Cable diameter (pressure plate type) mm ≤51 ≤51 ≤51 ≤68 ≤80
Outline ruler (mm) (width × high × Deep) 545×610×340 600×610×400 660×750×520 880×890×680 880×950×750
Weight (kg) 120 130 160 260 350

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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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