ABB CV Series Instruction Leaflet

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ABB CV Series Instruction Leaflet Manual pdf 1 page image

ABB Automation Inc.Substation Automation and Protection DivisionCoral Springs, FL 33065Instruction LeafletAll possible contingencies which may arise during installation, operation or maintenance, and all details andvariations of this equipment do not purport to be covered by these instructions. If further information isdesired by purchaser regarding this particular installation, operation or maintenance of this equipment, thelocal ABB Power T&D Company Inc. representative should be contacted.Type CV Voltage RelayClass 1E ApplicationsEffective: November 1999Supersedes I.L. 41-201.4G, dated January 1997( ) Denotes changes since previous issueCONTENTSThis instruction leaflet applies to the follow-ing types of relays:• CV-1 Long Time Undervoltage Relay• CV-2 Short Time Undervoltage Relay• CV-4 Long Time Overvoltage Relay• CV-5 Short Time Overvoltage Relay• CV-6 Long Time Over or Undervoltage Relay• CV-7 Short Time Over or Undervoltage Relay• CV-8 Low Voltage Pickup Overvoltage Relay! CAUTIONBefore putting relays into service, remove allblocking which may have been inserted for thepurpose of securing the parts during ship-ment, make sure that all moving parts operatefreely, inspect the contacts to see that theyare clean and close properly, and operate therelay to check the settings and electrical con-nections.1.0 APPLICATIONSThese relays have been specially designed andtested to establish their suitability for Class 1E appli-cations in accordance with the ABB Power T&D Com-pany program for Class 1E Qualification Testing asdetailed in bulletin STR-1.“Class 1E” is the safety classification of the electricequipment and systems in nuclear power generatingstations that are essential to emergency shutdown ofthe reactor, containment isolation, cooling of the reac-tor, and heat removal from the containment and reac-tor, or otherwise are essential in preventing significantrelease of radioactive material to the environment.The type CV relays are single-phase induction-disctype relays operating either on under or over voltageor both. These relays are applied as a voltage faultdetector operating in conjunction with other protectiverelays. The relays are also used as timing devices forvarious automatic operations.2.0 CONSTRUCTION and OPERATIONThe types CV-1, CV-2, CV-4, CV-5, CV-6 and CV-7relays consist of a voltage unit, an auxiliary telephonetype relay and an indicating contactor switch (ICS).The principal component parts of the relay and theirlocation are shown in Figure 1 (page 2).The type CV-8 relay in addition to the above compo-nents also has a capacitor which is series tuned withthe main coil of the electromagnet. This tuned circuit41-201.4H