OPERATION & MAINTENANCE MANUAL AIR …

1 OPERATION & MAINTENANCE MANUAL AIR insulated switchgear -TYPE VHIH upto 12kVCONTENTSSubCl SPECIFICATIONSPRECAUTIONS TO BE TAKEN CARES afety AspectsUnloading & TransportationUnpacking & InspectionHandling of Functional UnitsStorage ConditionsPANEL OVERVIEWP anel Structure VCB ConstructionINSTALLATIONF oundation PreparationOrder of InstallationHorizontal movement of PanelsErection of CubicleConnection of Main BusbarConnection of Earth BusbarConnection of Control WiresPower cable terminationPreparation of Cable Gland PlatePower cable terminationInspection after InstallationOPERATING INSTRUCTIONSO perating Instructions for VCBE arthing OperationsPT OPERATION SequenceSafety ShuttersControl Plug ArrangementAnti Condensation HeaterVCB Racking Shutter ArrangementInterlocksGeneral Interlocks ProvidedPadlocking FacilityVisual AND COMMISSIONINGP hysical InspectionAlignment checkDielectric testInsulation testOne minute power frequency testRelay injection testOperation testFinal Check before

2 EnergizationMAINTENANCEGENERALD aily InspectionVisual InspectionVariantsCheck on metal partsNoise Identi cationAnnual MaintenanceSafety PrecautionsMaintenance ProceduresVCB MAINTENANCE & InspectionMaintenance & Inspection ScheduleCheck on VacuumTROUBLESHOOTINGDO S AND DON TS MANDATORY SPARESNOTES34343434343535353536363636373 73737373739394143454647 CONTENTSSubCl NoDescriptionClNoPageNoINTRODUCTIONO peration & MAINTENANCE Manual01A - INTRODUCTIONIMPORTANT NOTE -Only the Speci c written Technical Instructions supplied by L&T must be used.

3 Our products must only be commissioned, operated, serviced, repaired or decommissioned in accounts with Technical Instructions which have been supplied by the manufacturer. Non Compliance with this instruction may result in serious damage to the product and its associated items, as well as health hazard or mortal products are subjected to factory inspection and testing according to the applicable standards and correct function and the service life of the switchgear are in uenced greatly by compliance with the installation.

4 Commissioning and operating conditions stipulated in this with these provisions may compromise warranty local provision which does not contradict the speci cations of this document, especially as regards safety for personnel and buildings, must be complied cannot be held liable for the possible consequences of: Non-compliance with the provisions contained in this MANUAL , which refer to international regulations. Non-compliance with the instructions of the suppliers of cables and connecting accessories as regards application and installation.

5 Any aggressive climate conditions (humidity, pollution etc.) prevailing in the immediate environment of switchgear not suitable to this effect or not protected MANUAL does not contain any instructions regarding the mechanical lock-outs to be performed. The work described is performed on de-energized (on installation) or mechanically locked out (decommissioned) & MAINTENANCE Manual02 Panel DetailsVoltage ratingsCurrent ratingsDimensionConstruction VCB StandardsVoltageFrequencyRated CurrentShort Time Withstand Current (3s)

6 Short Circuit Making currentWidth#Depth #HeightPartition ClassLoss of Service continuityDegree of protectionInternal Arc ClassificationIEC StandardType DesignationOperating SequenceOpening timeBreak timeMechanical OperationsClosing /Tripping CoilSpring charging motorAuxiliary Contacts630 / 800 A1250 A2000 A25 / kA40 / 50 / kAp100 / 125 kAp800 mm1570 / 1970 / 2170 / 2270 mm2495 mmPM LSC-2B IP4X (Higher IP on request)A (F, L,R), up to 40 / 50kA, up to 1sIEC 62271-100 VK series < 35 ms < 3 cycles 10.

7 000 6NO+6NC / 12NO+12NC*1000 mm* offered on request ^ with forced ventilation # 50kA Panel width & depth starts from 800mm & 1970mm respectivelyIEC 62271-200 VHIH up to 12 kV75 / 95* kVrms28 /38* kVp50 / 60 Hz3150 / 4000^ A600 mm Impulse Withstand VoltagePower Frequency Withstand VoltageType Designation24 / 48 / 110 / 220 V DC 24 / 48 / 110 / 220 V DC l 110 / 240 V AC12 kV AIS with CUBICLE SPECIFICATIONSSPECIFICATIONSO peration & MAINTENANCE Manual03 Panel DetailsVoltage ratingsCurrent ratingsDimensionConstruction VCUS tandardsType DesignationVoltageImpulse Withstand VoltagePower Frequency Withstand VoltageFrequencyRated CurrentShort Time Withstand Current (with Fuse)Width#Depth#Height#Partition ClassLoss of Service continuityDegree of protectionType DesignationOpening timeMechanical EnduranceElectrical EnduranceRated Duties (40% on Load Factor)

8 IEC 62271-200 VH1H up to kV*20 kVrms60 kVp50 / 60 Hz25 / 40 / 50 kA600 mm1570 / 1970 mm2495 mmPM LSC-2B IP4X (Higher IP on request)IEC 62271-106 VCU7N200 VCU7N400 VCU7L200 VCU7L400< 35 msup to 3 Million up to Million (AC-3) Class 300 Type CIEC StandardVCU TypeNon LatchedLatched3NO+3 NCAuxiliary Contactsup to Million Short Time Withstand Currentup to 8 kA200 - 400 AA (F, L,R), 40kA, up to 1s110 / 220 V DC kV AIS with VCU* 12 kV VCU offered on requestNORMAL SERVICE CONDITIONSO peration & MAINTENANCE NORMAL SERVICE - Standards and operating conditions:Applicable standard: IEC 62271-200, IEC 62271-100,IEC - Normal service conditions for indoor - Admissible ambient temperatureThe ambient temperature must be in the range of 5 C to +40 C.

9 For Higher ambient, please contact L&T Sales - Installation altitudeHigh-voltage switchgear has been designed according to the appropriate international standards and can be installed up to an altitude of higher installation altitudes, the reduced voltage endurance must be taken into special cases, please contact the L&T Sales - Air pollutionThe ambient air must be free of dust, smoke, corrosive or combustible gases, steam and - Admissible air humidity The average air humidity measured over a period of 24 hours, must not exceed 95%.

10 The average vapour pressure, measured over a period of 24 hours, must not exceed 22 mbar. The average air humidity measured over a period of one month, must not exceed 90%.The average vapour pressure, measured over a period of one month, must not exceed 18 mbar. Condensate may form in case of sudden temperature uctuations due to excessive ventilation, increased air humidity or hot air. Such condensate formation can be avoided by a suitable arrangement of the room or the building (suitable ventilation, air dehumidi er, heating etc.)