The auxiliary switch operates with zero - current - switching ( ZCS ), which can use low - cost thyristor.

辅助开关实现 零电流 转换, 它可以采用低成本的晶闸管.

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Use and connection of auxiliary switch to be reviewed and accepted by local authority having jurisdicition.

辅助开关的使用和连接应该经过当地有关管理部门的检查和认可.

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