Protection and Control Device Numbers and Functions
This publication contains new and updated information as indicated in the following table. The protection and control devices in electrical equipment can be referred to by numbers, with appropriate suffix
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In North America protective relays are generally referred to by standard device numbers. Letters are sometimes added to specify the application (IEEE Standard C37.2-2008).
ANSI codes and IEC Relay Symbols – Electrical Engineering
To assist the Protection Engineer in converting from one system to the other, a select list of ANSI device numbers and their IEC equivalents are given in the following figure.
Protection relay selection table
Protection relay selection table Please note before using selection table! number = Number of stages, shots, X = Function supported inputs or outputs O = Function available as option
SELECTION TABLE PROTECTION RELAY
SELECTION TABLE PROTECTION RELAYS Download this table in PDF Download this table in Excel
Practical handbook for relay protection engineers | EEP
The norms of protection of generators, transformers, lines and capacitor banks are also given. The procedures of testing switchgear, instrument transformers and relays are explained in detail.
Protection Relay
In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of
ANSI Relay Protection Code List
This document lists 57 ANSI codes and their corresponding descriptions of protection devices and functions.
ANSI CODES FOR PROTECTION FUNCTIONS
The ANSI(American National Standards Institute) has standardized the codes to be used for protection relays. Each protective function is indicated by a specific no. such as 50 for instantaneous
Table of ANSI IEEE Standard Device Numbers
In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or
Table of ANSI IEEE Standard Device Numbers
This table details ANSI IEEE Standard Device Numbers as used for protective relaying in North America. Suffixes for numbers are also suggested.
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