The Structure And Function Of High Voltage Isolating Switch

Structural features and functions of High Voltage Disconnect Switch: High-voltage disconnector is a high-voltage electrical appliance between high-voltage disconnector and high voltage. It is similar to circuit breaker in performance and similar to high-voltage disconnector in structure, with obvious disconnection point.

High-voltage disconnector has a simple arc extinguishing device, which can connect and disconnect the circuit under the conditions of rated voltage and rated current. However, since the arc extinguishing structure of high-voltage disconnector is designed according to rated current, it cannot cut off the short-circuit current. When the high-voltage disconnector is used in conjunction with the high-voltage fuse, the high-voltage disconnector is used to open and close the normal load circuit, and the high-voltage fuse is used to disconnect the short-circuit current. The combination of high-voltage disconnector and high-voltage fuse in series is often used in small-capacity distribution systems of 10kv and below.

Function: The high-voltage disconnector is similar to the high-voltage disconnector in structure, has obvious disconnection point, is similar to the circuit breaker in performance, and is a high-voltage electrical appliance between the high-voltage disconnector and the high-voltage circuit breaker. It can open and close the load current within its rated current range and cut off small overload current. It cannot open and close the fault current. After being pulled open, there is an obvious disconnection point, which can isolate the electrical appliances. It can be used as a switch point for small and medium-capacity equipment and lines, and can be equipped with a high-voltage fuse that can disconnect the fault current.