ANSI Codes
Device Numbers 1. Master Element is the initiating device, such as a control switch, voltage relay, float switch, etc., which serves either directly or through such permissive devices as protective and time
Relay Protection Codes and Devices
Home / Relay Protection Codes and Devices
In and, ANSI Device Numbers can be used to identify equipment and devices in a system such as, or. Many of these devices protect electrical systems and individual system components from damage whe. Even in those parts of the world where IEC standards are predominate, the use of ANSI numbering. These numbers are based on a system that is adopted by a standard for automatic switchgear by Institute of Electrical and Electronics Engineers (IEEE), and incorporated in American Standard C37. This system is used with diagrams that are found in instruction books and in specifications.
