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کلید جریان باقی مانده(معروف به محافظ جان)
4 Mar 2020, 03:55
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https://electrical-engineering-portal.com/residual-current-device-rcd
Which type of residual current device (RCD) you should use for protection? | EEP
It is not quite clear when and by whom the first residual current device (RCD) was developed, but it certainly appeared on the market in the 1950s and was
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