Electrical protection relays. Requirements for the principal families of protection relays, Specification for general requirements for measuring relays used for protection— 22 стр.
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. Insulation monitoring devices for IT systems— 18 стр.
Electrical protection relays. Requirements for the principal families of protection relays, Specification for general requirements for measuring relays used for protection— 22 стр.
Guide for procurement of power station equipment - Part 2-7: Electrical equipment; Switchgear and controlgear; German version EN 45510-2-7:2002— 35 стр.