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Electrical equipment and a. c. installations on up to 3 kV voltages and higher. Test methods of the electrical equipment insulation dielectric strength on the installation site

Document status: Active

Power cables with plastic insulation for rated voltages from 6 up to and including 35 kV. General specifications

Document status: Active

Electrical relays. Part 16. Impedance measuring relays

Document status: Active

Insulating rigid mica materials for heating equipment. Specification

Document status: Active

Electrical relays. Interruptions to and alternating component (ripple) in d. c. Auxiliary energizing quantities of measuring relays

Document status: Active

Low voltage surge protective devices. Part 21. Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods

Document status: Cancelled