Download Center for Medium Voltage Products and Systems (Switzerland) Quick search; Advanced search; Results (311) Electromechanical Relays (311) Accessories (7) Annunciator (11) Auxilliary Relay (41) Bus Differential (13) Manual. Types CA16 and CA26 Perecentage Differential Relays for Bus and Transformer Protection. ABB H Effective: May 1984 Supersedes I.
L. G, Dated June 1976 () Denotes change from superseded issue Type CO Circuit Opening Overcurrent Relay CONTENTS This instruction leaflet applies to the following types of circuit opening relays: Type CO2 Short Time Relay Abb co9 relay manual relays (CW, CWC, CWD, CWP, CWP1) CW power relay zero degree characteristic The type CW relay is a single phase induction type relay providing overpower or reversepower protection for electrical equipment or circuits.
2 SEL551 RELAY APPLICATIONS www Figure 1: SEL551 Relays Applied Throughout the Power System. com ABB Automation Inc. Substation Automation and Protection Division Coral Springs, FL Type CO Instruction Leaflet Effective: January 1992 All possible contingencies which may arise during installation, operation or maintenance, and all details and vari Type CO Overcurrent Relay U INSTALLATION Westinghouse I.
L. F OPERATION MAINTENANCE TYPE CO (HI Lo) OVERCURRENT RELAY CAUTION: Before putting relays into service, remove all blocking which may have been inserted for the purpose of Overcurrent relays (CO, COD, COM, COQ, COV) CO relays, a complete coordinated line, assure accurate and reliable primary or backup protection against phase or ground faults. They provide the backbone of any protective relaying system, from generator to U Type CO Overcurrent Relay 4 2.
0 CONSTRUCTION AND OPERATION The type CO relays consist of an overcurrent unit (CO), an