DIN EN 60255-21-3:1995 电气继电器.第21部分:量度继电器和保护装置的振动、冲击、碰撞和地震试验.第3节:地震试验
Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment; section 3: Seismic tests (IEC 60255-21-3:1993); German version EN 60255-21-3:1995