1. Single-supply transformer, when the power is cut off, first disconnect the load side switch, then disconnect the power side switch, and finally pull the side knife gates in the same order (first pull the load side, then pull the power side), power transmission operation The order is opposite to this. 2. Dual power supply or three power supply transformers 1) Under normal circumstances, when the power is cut off, first disconnect the low-voltage side switch, then disconnect the medium-voltage side switch, and finally disconnect the high-voltage side switch, and finally open the side-side switch. The power transmission operation sequence is reversed. 2) In special cases, the operation sequence of the transformer power transmission must also consider the configuration of the protection and the distribution of the power flow.
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