Tests for electric cables under fire conditions. Circuit integrity. Part 1. Test method for fire with shock at a temperature of at least 830 °C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm
United power system and isolated power systems. Relay protection and automation. Distance and overcurrent protection of power lines and utilities 110–220 kV. Functional requirements
