DIN EN 61166:1994 High-voltage alternating current circuit-breakers - Guide for seismic qualification of high-voltage alternating current circuit-breakers (IEC 61166:1993); German version EN 61166:1993
1994DIN EN 61166:1994 High-voltage alternating current circuit-breakers - Guide for seismic qualification of high-voltage alternating current circuit-breakers (IEC 61166:1993); German version EN 61166:1993