ANSI device numbers. In the design of electrical power systems, the ANSI standard device numbers (ANSI /IEEE Standard C Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations) identifies the features of a protective device such as a relay or circuit breaker. ANSI Standard Device Numbers. & Common Acronyms. Suffixes Description. _1. Positive-Sequence. _2. Negative-Sequence. A. Alarm, Auxiliary Power. AC. 21 - Distance Relay. 23 - Temperature Control Device. 25 - Synchronizing or Synchronism-Check. 27 - Undervoltage Relay. 30 - Annunciator Relay. 32 - Directional Power Relay. 40 –Field (over/under excitation) Relay. 50 - Instantaneous Overcurrent. 51 - AC Inverse Time Overcurrent Relay. 59 - Overvoltage Relay.
1 Master Element. 2 Time Delay Starting or Closing Relay. 3 Checking or Interlocking Relay. 4 Master Contactor. 5 Stopping. 6 Starting Circuit Breaker. 7 Rate of. ANSI Codes – Device Designation Numbers. In the design of electrical power systems, the ANSI Standard Device Numbers (ANSI /IEEE Standard C) denote what features a protective device supports (such as a relay or circuit breaker). In the design of electrical power systems, the ANSI Standard Device Numbers denote ANSI numbers are used to identify the functions of medium voltage . What is the ANSI codes of Overload protection Relay, Bus CVT.
List of Ansi Code for Relays - Free download as Word Doc .doc /.docx), PDF File .pdf), Text File .txt) or read online for free. Protective Device Numbers; Prefixes and Suffixes; ANSI IEC . 2. '3' can be placed before designations to indicate three phase, i.e. 3I. IEC Standard Series Symbols and Designations. 9. Comparison of ANSI/ IEEE with IEC Symbols. Topic. Page. Changed title to specify Protection and.