2012年3月22日 — Protective relays are commonly referred to by standard device numbers. For example, a time overcurrent relay is designated a 51 device, while an ...
ANSI DEVICE NUMBERS FOR PROTECTIVE RELAYS ... Standard C37.2) denote what features a protective device supports (such as a relay or circuit breaker). ... schematic ...
Phase Angle Measuring or Out-of-Step Protective Relay. 78V. Loss of Mains. 79. Ac Reclosing Relay / Auto Reclose. 80. Liquid or Gas Flow Relay. 81. Frequency ...
In protective relay-based systems, the time overcurrent protection function is designated by the ANSI/IEEE number code 51. Time overcurrent protection allows ...
87. Differential protective relay. A protective relay that functions on a ... Find the Direct Dial Code for your product. Use the code to route your call ...
2011年2月22日 — These types of devices protect electrical systems and components from damage when an unwanted event occurs, such as an electrical fault. ANSI ...