How to Deal With High Voltage Switch Cabinet Discharge?
As a High Voltage Switch Cabinet Manufacturer, share with you. High-voltage
cabinet refers to electrical products used for power system power generation,
transmission, distribution, electrical energy conversion and consumption, such
as on-off, control or protection, with a voltage level of 3.6kV~550kV, mainly
including high-voltage circuit breakers, high-voltage Isolation switches and
grounding switches, high-voltage load switches, high-voltage automatic reclosing
and sectionalizers, high-voltage operating mechanisms, high-voltage
explosion-proof power distribution devices, and high-voltage switchgears. The
high-voltage switch manufacturing industry is an important part of the
transmission and transformation equipment manufacturing industry and occupies a
very important position in the entire power industry. The protection method of
the high-voltage cabinet is the function of fuse or relay protection (action) to
make the electrical switch off or alarm. The protection method of fuse blowing
to trip, the circuit breaker is mechanical trip protection.
The relay protection is a protection circuit composed of various relays, which trips the circuit breaker, and at the same time uses the signal relay to send a signal (or sound and light signal) to complete the alarm.
High Voltage Switch Cabinet is mainly composed of circuit breaker, protection device and circuit.
High Voltage Switch Cabinet
The high-voltage electrical cabinet needs to prevent:
1. After the vacuum circuit breaker trolley in the high voltage electrical cabinet is closed at the test position, the trolley circuit breaker cannot enter the working position.
2. When the grounding knife in the high-voltage electric cabinet is closed, the trolley circuit breaker cannot enter the closing.
3. When the vacuum circuit breaker in the high-voltage electrical cabinet is closed, the back door of the cabinet is locked with the cabinet door by the machine on the grounding knife.
4. The vacuum circuit breaker in the high-voltage electric cabinet is closed during operation, and the grounding knife cannot be put in.
5. The vacuum circuit breaker in the high-voltage electric cabinet cannot withdraw from the working position of the trolley circuit breaker when the operation is closed.
High-voltage cabinets are generally prone to discharge in a humid environment. At this time, we generally deal with this.
1. To remove the moisture in the power distribution room, you can add a dehumidifier or use an air conditioner.
2. Grind the discharge marks of the contact points of the fired parts to remove ferrous metal residues.
3. Replace the high and low voltage bushings at the contact cable, and use formal and qualified silicone rubber insulation materials.
4. Replace the copper bars in the switch cabinet and replace the insulating baffle. The openings should meet the original specifications to remove surface burrs.
5. Add or repair the heater in the high-voltage electric cabinet to remove moisture.
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