scope:

This Standard is applicable to three-phase, alternating current switches and switch-disconnectors (hereafter referred to as switches), for indoor and outdoor installations, for rated voltages above 1 kV up to and including 52 kV and for rated frequencies 50 Hz and/or 60 Hz, which are manually operated or electrically operated.

This Standard is also applicable to three-phase, alternating current switches used on single-phase electric circuit.

This standard is also applicable to the operating devices of these switches and to their control equipment.

Switch-disconnectors are also covered by JIS C 4606 : 2011 and IEC 62271-102 : 2001 for their disconnecting function.

This Standard establishes requirements for switches used in distribution systems.

This Standard is not applicable to switches for capacitor, electric furnace, motor, etc., which is frequently opened and closed. However, when the number of opening and closing operations is within the scope of this Standard, this Standard is applicable to those switches as agreed between the interested parties.

It is assumed that opening and closing operations are performed according to the manufacturer's instructions. A breaking operation should not immediately follow a making operation since the current may exceed the rated breaking current of the switch immediately after the making operation even though the current is within the rated breaking current.

Earthing switches are not covered by this Standard. Earthing switches shall be in accordance with IEC 62271-102 : 2001.

NOTE 1 Except where special clarification is required, the term "switch" is used to refer to all kinds of switches and switch-disconnectors within the scope of this Standard.

NOTE 2 Since NOTE 2 given in the International Standard is a normative content, it has been moved to the main body.

NOTE 3 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

IEC 62271-103 : 2011 High-voltage switchgear and controlgear - Part 103 : Switches for rated voltages above 1 kV up to and including 52 kV (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.