This part of IEC 60099 applies to non-linear metal-oxide resistor type surge arresters with spark gaps designed to limit voltage surges on AC power circuits with system voltages U s above 1 kV up to and including 52 kV. This document basically applies to all metal-oxide distribution class surge arresters with internal series and/or parallel […]

This part of IEC 60051 applies to direct acting indicating analogue electrical measuring instruments and their accessories and gives guidance for applicable test methods and for the performance of test equipment. This document does not apply to: – special purpose instruments that are covered by their own IEC International Standards; – special purpose devices that

This part of IEC 60051 applies to direct acting indicating wattmeters and varmeters having an analogue display. NOTE For multi-function instruments, see IEC 60051-7.

This part of IEC 60051 applies to direct acting indicating ammeters and voltmeters having an analogue display. NOTE For multi-function instruments, see IEC 60051 -7.

This part of IEC 60034 specifies the factory acceptance vibration test procedures and vibration limits for certain electrical machines under specified conditions, when uncoupled from any load or prime mover. It is applicable to DC and three-phase AC machines, with shaft heights 56 mm and higher and a rated output up to 50 MW, at

This part of IEC 60034 applies to large three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. Also included are synchronous Mvar compensators of the same output range connected to a grid for the purpose of exchanging reactive power. This document supplements basic requirements for