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IEC 60255-6

2nd Edition, January 1, 1988

Complete Document

Electrical relays - Part 6: Measuring relays and protection equipment



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Superseded By: IEC 60255-1

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BILINGUAL * W/D S/S BY IEC 60255-1
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Description / Abstract:

Scope and object

This standard specifies the general performance requirements of all electrical measuring relays and protection equipment used in the electrotechnical fields covered by the IEC.

It excludes relays used in the following electrotechnical fields:

- telephony;

- telegraphy;

- signalling and blocking in railway systems;

- devices covered by IEC Publications 158, 292 and 337.

For special applications (marine, aerospace, explosive atmospheres, computers, etc.), it may be amplified by means of special requirements.

Relays which are designed to meet the requirements prepared by other international standardization organizations (telecommunication, railways, etc.) shall comply with this standard when used in the electrotechnical fields covered by the IEC , other than those excluded above.

The requirements are applicable only to relays in new condition. All tests in this standard are type tests unless otherwise declared.

The object of this standard is to state:


1) definitions of terms used;

2) nominal values relating to energizing and influencing quantities;

3) requirements related to accuracy, thermal and mechanical performance;

4) test methods;

5 ) markings and data.