Function And Operation Limitation Of Outdoor High Voltage Disconnector

Among the substation equipment in the power system, outdoor hv isolator is the most commonly used equipment in the substation. Because hv isolator switch has no arc extinguishing device, high voltage electrical isolator cannot normally interrupt the load current, so isolator high voltage only plays the role of obviously disconnecting the power supply, or can cut off small currents, such as no-load transformers.