Discussion on several debugging methods of distribution cabinet

After the distribution cabinet is installed, it can only be used after debugging by relevant technicians. What debugging should be done for the distribution cabinet? Distribution cabinet harness processing small braided belt, let's understand.

The commissioning of distribution cabinet mainly includes mechanical commissioning and electrical commissioning.

1、 Mechanical commissioning

Mechanical commissioning mainly refers to the commissioning of components and drawers requiring manual operation to check whether each component is intact, whether the operation is flexible and whether the quality is reliable. When checking the drawer, pay special attention to whether the connection and disconnection positions are firmly connected, which directly affects the normal use of the distribution cabinet.

2、 Electrical commissioning

Electrical commissioning mainly includes interlocking function test, electrical operation test and insulation test.

Processing of distribution cabinet harness

1. Interlocking function test

Interlocking of live equipment and doors, and interlocking of drawers and doors. The door cannot be opened under normal power on (door closing); Only when the power is cut off can the door be opened. In case of electrical interlocking between dual power supplies or normal power supply of mechanical power supply equipment, the circuit breaker of standby power supply cannot be closed. Only when the main power supply is disconnected, the standby power supply will automatically switch to each other.

2. Electrical operation experiment

Power on test shall be conducted on the premise of correct installation and wiring. Mainly check whether the opening and closing of circuit breaker, relevant indicator lights of operation button and manual switch are normal. This test needs to be tested cabinet by cabinet. If it is drawer, it needs to be debugged drawer by drawer.

3. Insulation resistance test

Insulation resistance test is necessary to ensure the safety of operators, cabinets and equipment in cabinets. It mainly tests the incoming and outgoing lines of the same level, the open position of the main switch of the switchgear, the live parts of different levels when the main switch is closed, the live parts and metal frame of the cabinet, the main circuit and control circuit. The test time shall reach 1 minute and the test resistance shall exceed 0.5m Ω.

After all the above tests are qualified, the distribution cabinet is in the best operation state, which is enough to ensure the safety of personnel and equipment.