
BS EN 61557-9. Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c.. Equipment for testing, measuring or monitoring of protective measures. Part 9. Equipment for insulation fault location in IT systems
出版:British Standards Institution

專家解讀視頻
? British Standards Institution 2013
General notes:
This Draft for Public Comment is no longer current as its expiry date for comments has passed. It is not available for order.