Eaton MVS Instructional Booklet

Contents

2Instructional Booklet IB02102006EEffective May 2011Type MVS (previously WLImetal-enclosed switchgear4.76 kV, 15.0 kV, 27.0 kV, and 38.0 kVeaton corporation www.eaton.comintroductionRead and understand these instructions before attemptingany installation, operation, or maintenance of this switchgearPurposeThis instruction book is expressly intended to cover the installation,operation, and maintenance of type Medium Voltage Switch(MVS), previously known as the Westinghouse Load Interrupter(WLI) metal-enclosed switchgear It does not purport to coverall possible contingencies, variations, and details that may ariseduring installation, operation, or maintenance of this equipmentIf further information is desired by the purchaser regarding thisparticular installation or application information, contact the localEaton sales office, see Eaton’s Consulting Application Guide, andreview the appropriate industry standardsBasic description and applicationA type MVS (previously WLI) metal-enclosed switchgear assemblyvertical section consists of an air insulated, three-pole, gang-operated, quick-make, quick-break, load interrupter switch ina floor-mounted metal enclosure It can be applied in combinationwith power fuses and many other protective devices to providesafe, economical switching and circuit protection whereinfrequent disconnecting means is requiredSwitchgear identificationA nameplate is located inside the small access door of each typeMVS switchgear vertical section (see Figure 1) Contained on thisnameplate are the Eaton master parts list number and all thenecessary switchgear ratings This information should be givento the Eaton sales office if a question should arise concerningthe switchgear or if renewal parts are required This informationis sufficient for Eaton to find the manufacturing informationfor the switchgearThe switch rating nameplate is on the switch mechanism coverThis nameplate is readily visible when the main enclosure dooris opened This nameplate contains all of the switch’s ratings andstyle numberFigure 1. Typical Nameplate1A33788H01symmetrical amperes; volts maximum.ratings when fuses are mounted in this vertical section.See separate label inside for fuse continuous currentcapable of delivering not more than RMSThis switchgear vertical section is suitable for use on a circuitof industry standards IEEE C37.20.3 and ANSI C37.57Type Switchgear Assemblies meet the requirementsShort Time (2 Sec., Sym)Momentary RMS AsymContinuous:Maximum ContinuousMaster P.L.:GO & It:Section No. OfDate:3 Phase 60 Hz.kV BIL:Operating Volts:Mfd. At:Encl. Category:Enclosure Type:Type:InstructionsMedium Voltage Metal Enclosed Switchgear AssemblyMain Cross Bus Current Ratings