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This National Standard of Canada is equivalent to International Standard CEI/IEC 61558-2-4:1997 (first edition, 1997-02). 1 Scope Replacement: This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V a.c. and rated frequency not exceeding 500 Hz,…

This part of International Standard IEC 60044 applies to new single-phase capacitor voltage transformers connected between line and ground for system voltages Um ³ 72,5 kV at power frequencies from 15 Hz to 100 Hz. They are intended to supply a low voltage for measurement, control and protective functions. This publication has the status of a PAS. A PAS is a technical specification not…

This National Standard of Canada is based on International Standard CEI/IEC 71-1:1993 1 Scope This part of International Standard IEC 71 applies to three-phase a.c. systems having a highest voltage for equipment above 1 kV. It specifies the procedure for the selection of the standard withstand voltages for the phase-to-earth, phase-to-phase and longitudinal insulation of the equipment…