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The fundamental difference between isolating switch and load switch

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Time of issue:2022-07-06 14:44
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(Summary description)The structure of the high-voltage isolation switch is simple, and it can be used to isolate the high-voltage power supply to ensure the safety inspection of other equipment. However, it does not have a unique arc extinguishing configuration, so it is not allowed to operate under load.

The fundamental difference between isolating switch and load switch

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The fundamental difference between isolating switch and load switch

Categories:News
Author:
Origin:
Time of issue:2022-07-06 14:44
Views:0

Information

The structure of the high-voltage isolation switch is simple, and it can be used to isolate the high-voltage power supply to ensure the safety inspection of other equipment. However, it does not have a unique arc extinguishing configuration, so it is not allowed to operate under load.

The high-voltage load switch is equipped with an arc extinguishing configuration, so it can cut off a certain load current and overload current. But it must be used with a high voltage fuse, using the power of the fuse to eliminate short circuit faults.

The high-voltage isolation switch is mainly used to cut off the circuit with no load current and isolate the power supply. In the case of opening, there are obvious cut-off points to ensure the safety monitoring of other electrical facilities. The normal load current and short-circuit fault current can be reliably used in the closing condition. Because there is no dedicated arc extinguishing configuration, it cannot be started, so the only operation that can be carried out is when the circuit has been cut by the circuit breaker. Remember not to work under load to avoid personal danger. The load switch is a kind of switching appliance on the isolation switch. It has a simple arc extinguishing configuration, which can cut off a certain load current and current, but cannot cut off the short-circuit current.

The fundamental difference between them is whether each household device can automatically trip the load through the thermal release when it is under load.

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Previous: Analysis of the Reasons for the Decrease of Vacuum Degree of High Voltage Vacuum Circuit Breaker

Next: The function and significance of high voltage vacuum circuit breaker

Previous: Analysis of the Reasons for the Decrease of Vacuum Degree of High Voltage Vacuum Circuit Breaker

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