Door Interlocking: starter and feeder doors mechanically interlocked so doors cannot be opened with unit energized;
门联锁：起动与馈电回路的门机械联锁以避免在装置通电的情况下开门。
The mechanical block system for combined vacuum electromagnetic starter with multiple quick open-door is presented.
介绍了多个快开门组合真空电磁起动器的机械闭锁装置，对两种机械闭锁装置优缺点作了对比分析。
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