Shchit namoyandahoi asbobhои kommunikatsiya va taqsimoti energiyai elektri. Baroi irtiboti elektri baina elementhoi asbobhои elektronii vasait.
Kommunikatsiyai zanjirhoi elektri ba vositahoi relе, ki dar tarkibi shchit shamil ast. Himoya az zanjirhoi elektri vasait.
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