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
Related Topics:
Relay Protection Device Comparison
Protection Relay Manufacturers 2026: MV Selection Guide
Protection Relay Manufacturer Comparison Table Figure 2. Manufacturer specification comparison across key selection criteria: IEC 61850 implementation depth, GOOSE messaging
ANSI Standard Device Numbers & Common Acronyms
ANSI Standard Device Numbers & Common Acronyms ANSI Standard Device Numbers & Common Acronyms
Comparison of Electrical Protection Relays
In the below table, you can easily learn the different types of protection relays with brief details such as function, application, advantages, and disadvantages.
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).
Types of Electrical Protection Relays or Protective Relays
Types of protection relays are mainly based on their characteristic, logic, on actuating parameter and operation mechanism. Protective
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
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.
Protection Relay Types Comparison
It provides a table outlining the key characteristics of each type of relay such as their technology, operating principle, measuring elements, range of settings, and maintenance requirements.
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.