In view of the problem that the interlocked circuit-breaker of underground local fan is influenced by the distance, the paper puts forward three kinds of design thought.
针对煤矿井下局部通风机风电闭锁装置受距离影响的问题，提出三种设计思路。
The circuit has many functions of protection, such as short circuit protection and interlocked protection.
该电路不但降低了功率损耗，还具有短路保护和互锁保护等电路保护功能。
The circuit has many functions of protection, such as short circuit protection and interlocked protection.
该电路不但降低了功率损耗，还具有短路保护和互锁保护等电路保护功能。
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