Category: IEC Standards

This part of IEC 62129 describes the calibration of optical frequency meters using an optical frequency comb as an internal

This part of IEC 61 952 is applicable to composite line post insulators for AC overhead lines with a nominal

This part of IEC 61 892 specifies additional characteristics for electrical installations in mobile units. It applies to installations that

This part of IEC 61 892 is applicable to the selection of electrical cables intended for fixed electrical systems in

This part of IEC 61 820 covers principles of design and installation requirements for AGL systems including control, monitoring and

This part of IEC 61 557 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase

This part of IEC 61 557 specifies the requirements applicable to measuring equipment for testing the effectiveness of protective measures

This part of IEC 61 557 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective

This part of IEC 61 557 specifies the requirements applicable to equipment for measuring the loop impedance between a line