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  1. potty

    Forms of Internal Separation for Low-voltage switchgear

    As I was going through the IEC 60439-1 (Low-voltage switchgear and controlgear assemblies) I realised that internal separation form consists of Form 1 to Form 4 with variations of (a) and (b). I have seen some LV switchgear specifications with Form 4 Type 1 to 7. I could not find the definition...

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