load transfer switch 负荷切换开关
Transfer Selector Switch: Permits selection of exercise with and without load transfer.
操作器转换选择开关：有及无负荷转移的条件下都可以选择操作。
Exerciser transfer Selector Switch: Permits selection of exercise with and without load transfer.
操作器转换选择开关：有及无负荷转移的条件下都可以选择操作。
The quality of transfer switch has crucial effect on the safe operation of on-load voltage regulation switch.
切换开关质量的好坏对能否保证有载调压开关的安全运行起着决定性的作用。
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