High voltage soft start state cabinet is mainly suitable for (3~10kV) squirrel cage asynchronous motor start and stop control and protection. The high quality anti-parallel thyristor components and electronic control equipment are connected between the stator winding of the high voltage motor and the power supply. When the motor starts, according to a certain law (such as constant current or voltage slope) control the conduction fish of the interproduct tube, and continuously change the input of the stator final group of the motor from pressure to full pressure, after the start is completed, the bypass contactor is drawn. It has the function of fault protection such as over-cut, short-phase starting, peak overcurrent, etc. Using it can effectively avoid the harmful impact caused by excessive motor starting current to the power grid, and can normally use high-power motor under limited power grid capacity and extend its service life. In addition, High voltage soft start state cabinet also has a “soft stop” function, when soft stop, the motor stator winding voltage will be smoothly reduced, thus avoiding the sudden stagnation of the equipment, which is useful for the pump (can avoid the effect of water hammer) or conveyor belt.
1. Small size and full functions
The wooden cabinet integrates the high-voltage solid-state soft-start cabinet, high-voltage switch cabinet, and bypass cabinet into an integrated cabinet. It is small in size. Compared with a separate high-voltage switch cabinet and a teaching cabinet,
The starting cabinet area is reduced by half, and it also has the functions of soft start, soft stop, switch cabinet and bypass cabinet.
2. The starting current is small and the energy saving effect is significant
The medium- and high-voltage switch solid-state soft-start integrated cabinet adjusts the voltage by changing the conduction angle of the thyristor, without energy loss and starting current.
Small, 2.5~3.5 times the rated current.
3. Strong anti-interference ability, adaptable to various usage environments
This cabinet is designed with a special resistance-capacitance absorption circuit, which has strong anti-interference performance. The product performance is stable, not affected by the ambient temperature and geographical location, and can be started frequently.
4. Comprehensive protection functions and high security
It has fault protection functions such as overload, phase loss, and starting peak overcurrent. The starting parameters are optional, adjustable and controllable.
5. Maintenance-free, cost saving
The maintenance-free design reduces the wiring cables of high-voltage switch cabinets and soft-start cabinets. No other maintenance is required after being put into use, which can save a lot of money in maintenance costs.