How to open and close an indoor load switch

The opening and closing operation of the indoor load switch usually includes the following steps:

Opening operation

‌Confirm the status‌: First confirm that the load switch is currently in the closed state and there is no abnormality in the line.

‌Pull the closing lever‌: Pull the closing lever to the opening position.

‌Wait for reset‌: Wait for the reset light to light up, indicating that the load switch is already in the reset state.

‌Check the voltage‌: Confirm that the voltage has dropped to zero to ensure safety.

Closing operation

‌Check the status‌: Before closing, you need to check the power supply, line status and load status to ensure that everything is normal.

‌Pull the closing lever‌: Pull the closing lever to the closing position.

‌Wait for reset‌: Wait for the reset light to light up, indicating that the load switch has been successfully closed.

‌Check the voltage‌: Confirm that the voltage has stabilized within the normal range.

Precautions

‌Operation specification‌: The opening and closing operation must be carried out in accordance with the process specifications, and the operation steps must not be changed without authorization.

‌Safety check‌: During the operation, always pay attention to the voltage changes, ensure the safety of personnel, and do not approach the load switch.

‌Two-person operation‌: For high-voltage load switches, it is recommended that two people operate them, one as an operator and the other as a supervisor to ensure safety.

In addition, different models of indoor load switches may differ in operating details, so it is best to refer to the specific product manual or consult a professional before operating.

As for the technical parameters of indoor load switches, the following are some common examples:

‌Rated voltage‌: For example, 400V, indicating that the load switch is suitable for a voltage level of 400V.

‌Rated current‌: For example, 200A, indicating that the maximum current that the load switch can carry under normal working conditions is 200A.

‌Breaking capacity‌: For example, 6kA, indicating that the maximum short-circuit current that the load switch can cut off under specified conditions is 6kA.

Please note that these parameter values will vary depending on the specific load switch model and specifications. When purchasing, you should choose a suitable load switch according to your actual needs.