3) 当DC母线实际电压达到额定电压的80%, S120整流单元端子X9:3~X9:4闭合, 旁路接触器( Bypass Contactor ) 吸合, 进线主回路的空气断路器进行合闸; 随即预充电接触器断电, 结束DC电容预充电。整个预充电约为1~2秒!
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bypass contactor tip 旁路接触器触点
bypass contactor pickup test 旁路接触器接触分合试验
Bypass vacuum contactor 旁路真空接触器
The joints of control bypass contactor passive relay output points;
控制旁路接触器的接点是无源继电器输出点；
Question: Is it necessary to add external bypass contactor for 3RW40 softstarter? What's the result when adding external bypass contactor for 3RW40 softstarter?
问题：3RW40软起动器是否需要设计外置旁路接触器？如加外置旁路接触器会有何影响？
Line, bypass and power factor correction contactor coils can be directly controlled.
控制线路、旁通和功率因素校正接触器线圈。
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