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IEC standard for low voltage surge arrester

IEC standard for low voltage surge arrester

IEC standard for low voltage surge arrester

(OP)
Which standard between IEC-99-4 and IEC 61643 should be applied for low voltage surge arrester installing at distribution transformer?

RE: IEC standard for low voltage surge arrester

Hi Bolt,

Try IEC Std 664- Insulation co-ordination within low-voltage systems including clearances and creepage distance for equipment.

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