File name: Ansi Device Numbers Pdf
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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). These types of devices protect electrical systems and components from damage when an unwanted event occurs, such as an electrical fault. IEEE Device Numbers and Functions for Switchgear - IEEE DEVICE NUMBERS & FUNCTIONS Note: Control power is considered to include auxiliary power which supplies such apparatus as small motors and heaters. 9 Reversing Device is used for the purpose of reversing a machine field or for performing any other reversing functions. ANSI DEVICE NUMBERS ansi device GE Power Management 2 Time-delay 21 Distance 25 Synchronism-check 27 Undervoltage 30 Annunciator 32 Directional power 37 Undercurrent or underpower 38 Bearing 40 Field 46 Reverse-phase 47 Phase-sequence voltage 49 Thermal 50 Instantaneous overcurrent 51 AC time overcurrent. In electric power systems and industrial automation, ANSI Device Numbers can be used to identify equipment and devices in a system such as relays, circuit breakers, or instruments. The device numbers are enumerated in ANSI / IEEE Standard C Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations. ANSI Device Numbers - Free download as PDF File .pdf), Text File .txt) or read online for free. The document lists various device numbers and acronyms used for protective relaying and control systems. Device numbers 1 through 99 are assigned to specific protective functions and equipment. ANSI DEVICE NUMBER BY PRODUCTS MODEL DESCRIPTION DEVICE No. ANSI Device Number by Products MIG II Generator Protection System 49, 50/51 MIN II Ground Protection System 50/51G MIV II Voltage/Frequency Protection System 27, 59, 81 MIW II Directional Power Protection System 32, 40 MLJ Digital Synchronism Check Relay