IEC: 255 - 21 - 2 - 1988; Electrical relays Part21 Vibration, shock, bump and seismic tests on mesasuring relays and protection equipment Sec.<2> Shock and bump tests

IEC: 255 - 21 - 2 - 1988; Electrical relays Part21 Vibration, shock, bump and seismic tests on mesasuring relays and protection equipment Sec.<2> Shock and bump tests - Geneva IEC 1988 - 29p

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