请教保险丝的作用? 今天看资料,有:“ Each analogue input, digital input and digital output channel shall have its own fuse (or other suitable protection) either at the DCS I/O termination card or at the outgoing terminals, to prevent a single fault from shutting down a complete card. This is not necessary if the signal uses an IS barrier close to the I/O card.”对此不是很理解。 请教保险丝的作用是什么? 查看更多3个回答 . 3人已关注