Product use

It is suitable for coal mine in explosive environment, in the power supply system with rated frequency 50Hz, rated voltage 1140V, 660V, rated current 630A and below the three-phase neutral point is not grounded, as the main switch or separate switch of the distribution system, and can also be used as the infrequent start and stop of large capacity motor. The feed switch is equipped with electric and manual isolation switch in the front stage of the vacuum circuit breaker, which greatly improves the safety and convenience of maintenance operation, and is an ideal replacement of the traditional feed switch. 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;

The circuit breaker adopts vacuum circuit breaker with permanent magnet mechanism, simple structure and stable performance; With electrical and mechanical manual switching function;

The isolation of the feed switch and the integrated design of the circuit breaker not only have the ability of combining, protecting and extinguishing the arc of the vacuum circuit breaker, but also have the power isolation ability of the isolation switch.

The feed switch is composed of a single point rotary electric isolation device and a vacuum circuit breaker. The traditional isolation and circuit breaker are effectively combined. The device has a single structure, simpler structure and more reliable performance.

Wedge wire contact design increases the contact pressure between contacts, strong current bearing capacity;

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, selective leakage, leakage block, wind power block, gas block and other protection functions;

The passive wireless temperature sensor is used to measure the temperature of the main loop contact in real time, and the measured temperature is transmitted to the protector through the wireless receiver, which realizes the function of remote temperature monitoring and temperature rise protection in the main loop of the feed switch.

Innovative anti-interference and electromagnetic shielding design to accurately protect power supply systems with inverters;

The universal design of the main switch and the separate switch, the choice of switching freedom; Three voltages (1140V, 660V, 380V) integrated design, a wider range of application;

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

Optional configuration of RS485, CAN, Ethernet interface, 4G/5G/WIFI and coal mine power grid monitoring system communication, with telemetry, remote control, remote control, remote message, remote viewing and other functions, to achieve unattended substation.

Main technical parameters