High And Low Voltage Switchgear Operation Rules

1. Work on all and part of the live disks, the maintenance equipment should be separated from the operating equipment with obvious signs.

2. The secondary winding with current transformer and voltage transformer should have permanent and reliable protection grounding.

3. When working on the secondary circuit of the running current transformer, the following safety measures should be taken:

3. It is strictly prohibited to disconnect the current loop.

3. In order to reliably short-circuit the secondary coil of the current transformer, a short-circuiting piece and a short-circuit wire must be used, and wire winding is prohibited.

3. It is forbidden to carry out any work on the circuit and wire between the current transformer and the short-circuit terminal.

When working on the secondary circuit of the voltage transformer in operation, the following safety measures should be taken:

1. Strictly prevent short circuit or ground

2. Insulation tools and gloves should be used, and if necessary, the relevant relay protection devices should be disabled before work.

3. When connecting temporary loads, special switches and fuses must be installed.

4. During the secondary circuit energization test, in order to prevent a secondary reverse voltage transformation from the secondary side, in addition to disconnecting the secondary circuit, the primary fuse should also be removed.

5. Before the secondary circuit is energized or withstand voltage test, the duty officer and relevant personnel should be notified, and someone should be sent to guard the site, check the circuit, and confirm that no one can work before pressurizing.

6. Check the power failure protection and secondary circuit staff, without permission of the duty personnel, are not allowed to carry out any trip operation. High and low voltage switch cabinets, control cabinets, power cabinets and lighting boxes for various purposes.