Operation Sequence and Cause of Transformer Outage

Operation Sequence and Cause of Transformer Outage

Operation Sequence and Cause of Transformer Outage
Main transformer outage operation sequence:
In case of power failure, first stop the load side and then stop the power side. The power supply operation sequence is: first send the power side and then the load side.
The main reasons are:
1. Power supply from the side load side of the power supply. If there is a fault, it is convenient to determine the fault range, make judgment and treatment in time, so as to avoid the spread of the fault.
2. In the case of multiple power supplies, the first stop load can prevent the transformer from backcharging. If the power side is stopped first, the protection device may be misoperated or refused in case of failure, extending the fault cutting time and possibly expanding the fault range.

Operation Sequence and Cause of Transformer Outage

Main transformer outage operation sequence:

In case of power failure, first stop the load side and then stop the power side. The power supply operation sequence is: first send the power side and then the load side.

The main reasons are:

1. Power supply from the side load side of the power supply. If there is a fault, it is convenient to determine the fault range, make judgment and treatment in time, so as to avoid the spread of the fault.

2. In the case of multiple power supplies, the first stop load can prevent the transformer from backcharging. If the power side is stopped first, the protection device may be misoperated or refused in case of failure, extending the fault cutting time and possibly expanding the fault range.

3. When the busbar voltage transformer on the load side is equipped with a low-frequency load reducing device without current locking, once the switch on the power side is stopped first, the low-frequency load reducing device may misoperate due to the feedback of the large synchronous motor.