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IEC 60255-127

Measuring relays and protection equipment – Part 127: Functional requirements for over/under voltage protection

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Organization: IEC
Publication Date: 1 April 2010
Status: active
Page Count: 54
ICS Code (Relays): 29.120.70
scope:

This part of IEC 60255 specifies minimum requirements for over/under voltage relays. The standard includes specification of the protection function, measurement characteristics and time delay characteristics.

This standard defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this standard.

The general requirements for measuring relays and protection equipment are specified in IEC 60255-1.

Document History

IEC 60255-127
April 1, 2010
Measuring relays and protection equipment – Part 127: Functional requirements for over/under voltage protection
This part of IEC 60255 specifies minimum requirements for over/under voltage relays. The standard includes specification of the protection function, measurement characteristics and time delay...

References

This document references:
IEC 61850-8-1 - Communication networks and systems for power utility automation – Part 8-1: Specific communication service mapping (SCSM) – Mappings to MMS (ISO 9506-1 and ISO 9506-2) and to ISO/IEC 8802-3
Published by IEC on February 1, 2020
General This part of IEC 61850 specifies a method of exchanging time-critical and non-time-critical data through local-area networks by mapping ACSI to MMS and ISO/IEC 8802-3 frames. MMS services and...
This document references:
IEC 61850-10 - Communication networks and systems for power utility automation – Part 10: Conformance testing
Published by IEC on December 1, 2012
This part of IEC 61850 specifies standard techniques for testing of conformance of client, server and sampled value devices and engineering tools, as well as specific measurement techniques to be...
This document references:
C37.2 - Electrical Power System Device Function Numbers, Acronyms, and Contact Designations
Published by IEEE on September 21, 2022
This standard applies to the definition and application of function numbers and acronyms for devices and functions used in electrical substations, generating plants, and in installations of power...
This document is referenced by:
BS EN 60730-1 - Automatic electrical controls for household and similar use - Part 1: General requirements
Published by BSI on July 15, 2001
Applies to the inherent safety of automatic electrical controls for use in, on or in association with equipment for household and similar use, including controls for heating, air-conditioning and...
This document is referenced by:
SNZ AS/NZS IEC 60947.4.2 - Low-voltage switchgear and controlgear Part 4.2: Contactors and motor-starters-AC semiconductor motor controllers and starters
Published by SNZ on June 29, 2015
This standard applies to a.c. semiconductor motor controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which...
This document is referenced by:
SNZ AS/NZS IEC 60947.5.1 - Low-voltage switchgear and controlgear Part 5.1: Control circuit devices and switching elements-Electromechanical control circuit devices
Published by SNZ on June 29, 2015
Scope and object This part of IEC 60947 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear. It applies...
This document is referenced by:
CEI CLC/TS 50549-1 - Requirements for the connection of a generating plant to a distribution system Part 1: Connection to a LV distribution system and above 16 A
Published by CEI on June 1, 2015
The purpose of this Technical Specification is to provide technical guidance on the requirements for generating plants which can be operated in parallel with a distribution network. For practical...
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