Suitable for methane and coal dust explosion hazard environment and the rated frequency 50Hz, the rated voltage 3300V of the power supply system, carry out multiple control of single control, sequence control, single machine double speed control, double machine double speed control upon multiple three phase AC asynchronous motor and double speed motor, and protect motor and power supply lines, and also provide protection of motor and power supply lines.Automatic control of power supply equipment can be realized by using monitoring system in mine.
Modular design of power Loop. One loop, one module. The main electrical components of each control circuit are integrated inside the module.
Module can easily access to main circuit bus or exit main loop bus through the external isolating handle. Install mechanical interlocking device to ensure that the module opens first and then exits, preventing load plug-out module.
One set of electric commutation mechanism for each loop. Integration of electric reversing mechanism inside module. Operate on industrial control screen. Each loop can be independently reversed without affecting other circuits.
Intelligent microcomputer integrated protection device for combined switch. With overload, short-circuit, leakage latch, off-phase, three-phase imbalance, undervoltage, over-voltage absorption and other protection functions.
The touch screen of 10 inch TFT color industrial computer is used to display the important parameters such as system voltage, three-phase current, circuit running state, circuit on-line state, fault type and so on. With fault memory and inquiry function. With man-machine interface keyboard, can amend fixed protection value without power failure and various kinds of operations.
The internal data of the product adopt optical fiber communication, which ensures the normal high-speed transmission of signal and eliminates the phenomena of crash, maloperation and disorder code.
With standard LAN communication interface, it is configured in mine monitoring and monitoring system to realize 4 remote functions, namely telemetry, remote control, remote communication, remote adjustment. Can realize the functions of remote dividing, closing, remote reading of meter, thus to achieve unattended operation in the substation.
Auxiliary power supply of 127V(5KVA) is provided, and the line is protected by vacuum contactor and microcomputer integrated protector.
