Standards for Electrical DesignS.noRELEVANT STANDARD OR DESCRIPTIONSTANDARD CODEEquivalent standardsAPPLICATION & REFERENCE DESCRIPTIONSource link for the Standard1 PTS 33.64.10.10Electrical Engineering Guidelines. (September 2002) 2NFPA STATIC ELECTRICITY3NFPA 30 Flammable & Combustible Liquids Code\\aeplsrv-04\E & I\USERS\Srinath\Electrical Standards\NFPA 30-2008.pdf4NFPA 70 ELECTRICAL APPLICATIONS5NFPA 79 INDUSTRIAL MACHINERY6NFPA 780 LIGHTNING PROTECTION code\\aeplsrv-04\E & I\USERS\Srinath\Electrical Standards\NFPA 780.pdf7NFPA 70B & NFPA 70E FOR ELECTRICAL DESIGN8NFPA 72 Fire Alarm Systems9NEC 110-14Conductors sizing10NEC 2002 Article 280Surge Arresters\\aeplsrv-04\E & I\USERS\Srinath\Electrical Standards\NEC-HANDBOOK-'02.pdf11NEC 2002 Article 285Transient Voltage Surge Suppressors (TVSS)12NEC 2002 Article 450,Transformers & Transformer Vaults (Including Secondary Ties) overcurrent protection for transformers1314NEC 2002 Article 430 & 440,Sizing Motor Feeders and Over current Protection15NEC 430-52Full load current limits for High Efficiency Motors.16IEEE Std 21 - 1964Bushings17ANSI C76.1-1964Requirements and Test Code for Outdoor Apparatus Bushings18NEC 2002 250.4(A)(5) or 250.4(B)(4)Effective GroundingElectrical Standards\NEC-HANDBOOK-'02.pdf19NEC 2002 250.50 Grounding Electrode Systems.20NEC 2002 250.52Grounding Electrodes21NEC 2002 250.52(A)Electrodes Permitted for Grounding22NEC 2002 250.52(B)Electrodes not Permitted for Grounding23NEC 2002 Figure 310.60Cable Installation dimensions24NEC 2002 , ARTICLE 408Switchboards and Panelboards25Annexure D of NEC 2002 with cross-references to Article 220Branch-Circuit,Feeder and Service Calculations26NEC,Articles 210.19(A)Voltage - Drop Calculations27NEC, Article 700Emergency power sources28ANSI C.37.010-1979 & ANSI C.37.5-1979Definition of Minimum Contact-Parting Time for AC High-VoltageCircuit Breakers29IEEE-48-1990Standard Test Procedures & requirements for HV alternating current cable terminations.30ANSI/IEEE-I/1992General principles for temperature limits in the rating of electric equipment and for the evaluation of electrical installation31ANSI/IEEE C62.41Recommended practice on Surge Voltages in Low Voltage Power Circuits.32ANSI/IEEE 141Recommended practice for electric power distribution for industrial plants(IEEE Red Book)33ANSI C50.10/1990Synchronous Machines.34ANSI C.37.42Standard on distribuiton cut out and fuse links35ANSI C.37.47Specification for distribuiton fuse disconnecting switches, fuse supports& current limitng fuses.36ANSI C57.12.80KVA terminal voltages and currents of Power Transformers.37ANSI/IEEE C57.13/1987Instrument Transformers (CTs and VTs) - Requirements.38Standard Nominal System Voltages in the USAANSI C84.1-1989for voltages from 120 to 230,000 V,39ANSI C92.2-1987,Power SystemsAlternating Current Electrical Systems and Equipment Operating at Voltages Above 230 kV Nominal-Preferred Voltage Ratings40ANSI C37.30 -1970Definitions and Requirements for HV Air Switches, Insulators, and Bus supports41ANSI/NEMA MG1-1978Motors and Generators42ANSI/IEEE Standard 446-1987IEEE Recommended Practice for Emergency and Standby Power Systems for Industrial and Commercial Applications (Orange Book)43IEEE-404Standard for Cable Joints for use with Extruded Dielectric cables and laminated di-electric cable.44ANSI/NFPA 110Emergency and Standby Power Systems45ANSI/NFPA 110AStored Energy Systems46IEEE Std 142Protection of Elec. Sub-stations , power stations , tanks & tank farms47IEEE Std 315-1975 , (Reaff 1993)IEEE Standard Graphic Symbols for Electrical & Electronics Diagrams48IEEE Std C37.20.1-1993IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear49IEEE Std C37.20.2-1993IEEE Standard for Metal-clad and Station-Type Cubicle Switchgear50IEEE Std C37.21Standard for Control Switchboards.51IEEE Std C372-1996FUNCTION NUMBERS AND CONTACT DESIGNATIONS52IEEE Std 241-1990Circuit (busbar network) Arrangements53IEEE-32NER's for Transformer protection54IEEE-80Phase segregation for 33kv lines55IEEE-85Results of an investigation on over voltages due to a vaccum CB when switching an HV Motor56ANSI/IEEE Std 242-1986Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book).57IEEE Std 324-1971Insulator Units58ANSI/IEEE Std 399-1980Recommended Practice for Power Systems Analysis (IEEE Brown Book)IEEE 485Battery Charger Calculations Reports59ANSI/IEEE Std 493-1980Reliability analysis and total owning cost60ANSI/IEEE 519Guide for Harmonic control & reactive compensation of power converters.61ANSI C 84.111995Electric power systems and equipment - voltage ratings (60 Hz)62NEMA/ICS-7/1993Industrial and Control Systems , Adjustable Speed Drives.63NEMA/MG 1/1993Motors and generators ratings, construction, testing and performance64NEMA/MG 2/1989Safety Standards (enclosures) for construction and guide for selection, installation and use of rotating machines65NEMA/MG 10/1994Energy management guide for selection and use of three-phase motors66NEMA/MG 11/1992Energy management guide for selection and use of single phase motors67NEMA/MG 3/1990Frame assignments for ax. integral horsepower induction motors68NEMA SG-6Power Switching Equipment69NEMA/ PB 1/1990Panel Boards70NEMA/ PB 1.1/1991General Instructions for proper installation,operation& maintainence of panel boards, rated 600V or less71NEMA/ PB 2/1995Dead Front Distribution Boards.72 NEMAStandard ICS 2-213 Starting current & Peak current & temp. limits during cycles for motors73 NEMAStandard ICS 2-321.6A0Control and power connections600 V or less74NEMA AB-1UL 489, CSA C22.2 No.5Circuit Breaker's characteristics.75IS: 2629/IS 2633/IS 4759Galvanization : Matl. For light poles76IEC 332-3Tests on Electric cables under Fire ConditionsElectrical Standards\IEC 332-3.pdfIEC 76BS 171transformers shall be oil-immersed naturally cooled and hermetically sealed type IS: 335, 2000 Insulating oilIS: 1271, 2001Thermal evaluation and Classification of electrical insulationIS: 3637, 2001Gas operated relaysIS: 2099. 2003Bushing for Alternative voltages above 1000 VIS: 3639. 2001 Fitting & accessories for power transformersIS 6600Loading of Oil immersed TransformerIS 10028Selection, Installation & Maintenance ofTransformers77IS 694PVC Insulated cables for Working voltages up to and including 1100 voltsElectrical Standards\IS 694-1990.pdf78IS 875 -PART3BSEN-40Polygonal poles for luminaire79 as per table 4 of IS 1554 Part (I)IS 1554Specification for PVC INSULATED (HEAVY DUTY ) ELECTRIC CABLES Extruded PVC compound type STI, min thickness INNER SHEATHElectrical Standards\IS-1554.pdf80IS 1777 : 1978Industrial luminaire with metal rflectors81IS 1913 (pt-1) : 1978General & Safety requirements for luminaires : Part 1, Tubular fluorescent lamps82IS 1944 (pt-1) : 1970Code for lighting of public throughfare : Parts 1 & 2 for main &secondary roads (group A & B)83IS 1944 (pt-5) : 1981Code of practice for lighting of pyblic throughfare Part 5, Lighting for grade separated junctions, bridges and elevated roads (group D): 84IS 1944 (pt-6) 1981Code of parctice for lighting of public thovaughfave : Part 6, Lighting for towns & city centres & areas of civic importance (group E)85IS 2206 (pt-1) : 1984Flameproof electric lighting fittings : Part 1, Well glass and bulkhead types86IS 2206(pt-2) : 1976Flameproof electric lightings : Part 2, Fitting using glass tubes 87IS 2206(pt-4) : 1987Flam proof electric lighting fittings : Part 4,Protable flam proof hard lamps88IS 3287 : 1965Industrial lighting fitting with plastic reflectors89IS 3528 : 1966Waterproof electric lighting fittings ; Watertight electric lighting fittings90IS 3646 (pt-3) : 1968Code of pratice for interior illuminisation of coefficient of utillzation & glare index91IS 8130 ; IS 8134IS 2713-1980Specification for Tubular Steel Poles for Overhead Power Lines92IS 2633METHOD FOR TESTING UNIFORMITY OF COATING ON ZINC COATED ARTICLESElectrical Standards\IS 2633-1986.pdf93IS 3975ARMOURING FOR MULTI-CORE CABLESElectrical Standards\IS 3975.pdf94IS 5831Outer Sheath matl. For cablesElectrical Standards\IS 5831-1984.pdf95IS 1332Specification for Precast Reinforced Concrete Street Lighting Poles96IS 2193Specification for Precast Prestressed Concrete Street Lighting Poles97IS 2905Concrete Poles for Overhead Power & Telecommunication lines - Method of Test98IS: 1255Code of Practice for Installation and Maintenance of Power Cables up to and including 33 KV99IS: 8061Code of Practice for Design, Installation and Maintenance of Service Lines up to and including 650 V100IS: 13573Joints and Terminations of Polymeric Cables for Working Voltages form 6.6 KV up to and including 33KVPerformance Requirements and Type Tests101IEC 909Elec.Equip-Data for Short-Circuit current calculations in accordance with IEC 909102IS 1944Road Lighting Standards103IS 10322-2Specification for Luminaires. Part-2 :Constructional RequirementsElectrical Standards\10322_2.pdf104IS 10322-5-3Specification for Luminaires. Part-5 :Particular Requirements.sect-3:Luminaires for Road & Street lightingElectrical Standards\10322_5_3.pdf105BS 5489-1:2003.Code of Practice for the Design of Road LightingElectrical Standards\BS 5489.pdf106IS 3646Code of Practice for Interior Illumination.Electrical Standards\IS3646_1.pdf107BS 5266-1 TO 7: 1999Emergency LightingElectrical Standards\Emergency Lighting108IS 2309IEC 62305, 2006 and BS 7430, 1991BS-6651LIGHTNING PROTECTIONElectrical Standards\lightning109IS 3043BS-7430EarthingElectrical Standards\earthing110IS 3347LV Neutral Bushing.111IS 1231IEC 60072-1 & 60072-2Motor ratings & nearest Horse Power112IS 996IEC 60072-3Small Built In motors113IS 325 & IS 4722IEC 60034-1Combined Permissible voltage & frequency variation114IS 4691IEC 60034-5Types of Protection against contact with live or moving Parts115IS 6362IEC 60034-6Cooling systems in Motors116IS 2253IEC 60034-7Mounting of Motors117NEMA MG-1IEC 60034-12MOTOR DESIGNS - PERFORMANCE118ISO 1680, 2373 , 3740IEC 60034-9 & 60034-14Vibration & noise level119IEC 60034-15Impulse Voltage level withstand test120IEC 60034-17Cage IM's application guide121IEC 60034-18-1Polarization Index for Motors122IS 8789IEC 60038Standard voltagesElectrical Standards\IEC 60038.pdf123IS 2705 PART1,2IEC 60044-1/6/2IS 4201 , 4146 ,3156 ; BS 3938CURRENT TRANSFORMERS124IEC 60050International Electro-technical vocabulary.125IS 1248 PART 1-9IEC 60051Selection of Instruments used for Elec. Measurements.(Direct acting indicating analogue electrical measuring instruments and their accessories.)126IEC 60059Rated Continuos current ratings & Permissible temp. rise127IS 2071IEC 60060IEEE 4HV Test techniques ,general128IS 2165IEC 60071-1ANSI/IEEE13 13.1/1996Insulation Co-ordination129IS 2026-1/1991IEC 60076-1Power Transformers - General Specfication for tappings & connections130IS 2148IEC 60079-0Elec Appartus for Explosive Gas Atmosphere -General Requirements.131IS 2148IEC 60079-1Flame proof enclosures for electrical apparatus132IS 6381IEC 60079-7Elec Apparatus for Explosive Gas Atmosphere for increased safety.133IS 5572IEC 60079-10Classification of Hazardous locationsElectrical Standards\iec60079-0{ed3.1}b.pdf134IS 3682IEC 60079-11Spec. for intrinsically safe electrical system135IS 5571IEC 60079-14Guide for selection of electrical equipment for hazardous areaTemp. class & limiting surface temp.( Electrical apparatus for explosive gas atmospheres - Electrical installations in hazardous areas.)IS 5578Guide for marking of insulated conductors136IS 9628IEC 60079-15electrical apparatus with type of protection 'N'137IEC 60079-20138IS 1271IEC 60085ANSI/IEEE275 ; IEEE 429Thermal evaluation & classification of electrical insulation139IS 14256IEC 60146-1Spec. for basic requirements for Power Converters140IS 3156IEC 60186VOLTAGE TRANSFORMERS141IS 8623IEC 60439-1LV switchgear & controlgear assemblies142IEC 60445Identification of equipment terminals and of terminations of certain designated conductors, including general rules for an alphanumeric system.143IEC 60473Dimensions for panel-mounted indicating and recording electrical measuring instruments.144IEC 60521Class 0.5, 1 and 2 alternating current watthour meters145IS 9921 (Part 1 -Part 5)Specification for Alternating Current Disconnectiors (Isolators) and Earthing Switches for Voltages above 1000 V.146IS: 12729Switchgear and Controlgear for Voltages exceeding 1000V General Requirements147IS 69211/11 kV (Ungrounded system) paper insulated belted cables ; 12.7/22 kV (Grounded system) paper insulated screened (H) cables148IS 1651BATTERY CHARGER DISCHARGE RATE.149IS 10118Code of Practice for switchgear selection & installation150IS 4691 , 2147IEC 60529Specification for Degrees of Protection provided by EnclosuresElectrical Standards\iec60529{ed2.1}b.pdf151IS12032, 1076,8223IEC 60617-1 to 13Graphical symbols for electrical power, telecommunications and electronics diagrams.152IEC 60726Dry Type Power Transformers.153IEC 60289Reactors in General154IEC 60310For Traction transformers and reactors.IS 12640Residual current operated circuit breakers155IEC 60909For guidance on Short Circuit Calculations.,Step by step calculation for arriving the Fault Level of an system.IS 13925capacitor units shall have overload capacity156IS 13947-1/1998IEC 60947-1/1998Specification for LV Switchgear & controlgear. General rules157IS 13947-4/1998IEC 60947-4Electromechanical Contactors & motor starters158IEC 60146-1-1Static drives overcurrent capacity159160IEC 60227General requirements PVC insulated electric cables for voltages 3.3 kV to 11kV ; Polyvinyl Chloride Insulated Cables of Rated Voltages Up To and Including 450/750V161IEC 60228Conductors of Insulated CablesElectrical Standards\iec60228-amd1{ed2.0}b.img.pdf162IEC 60228AConductors of Insulated Cables-Guide to dimensional limits of circular conductors.Electrical Standards\iec60228a{ed2.0}b.img.pdf163IEC 60298Type Co-ordination between different Protection equipments.164IEC 60331-11Tets for Electric cables under Fire Conditions-circuit Integrity , part -11 flame temp of atleast 750 degCElectrical Standards\IEC-60331-11.pdf165IEC 60331-21Tets for Electric cables under Fire Conditions-circuit Integrity , part -21 procedures & requirements-cables of rated voltages upto & inclu 0.6/1 KvElectrical Standards\iec60331-21{ed1.0}b.pdf166IEC 60331-23Tets for Electric cables under Fire Conditions-Procedures & Requirements:Electric data cablesElectrical Standards\iec60331-23{ed1.0}b.pdf167IEC 60332-3-23Tets for Electric cables under Fire Conditions-Vertical Flame spread of vertical mounted bunch of wires or cables -Category-BElectrical Standards\iec60332-3-23{ed1.0}b.pdf168IEC 60364-5-523-1Electrical Installtion of BuildingsElectrical Standards\IEC60364-5-523-1.pdf169IEC 60364-5-523-2Current carrying capacitiesElectrical Standards\IEC60364-5-523-2.pdf170IEC 60502-1Cables for Rated voltages of 1kVElectrical Standards\iec60502-1{ed1.1}b.pdf171IEC 60664Insulation coordination for equipment within low-voltage systems, Part 1: Principles, requirements and tests.172IEC 60688Electrical measuring transducers for converting a.c. electrical quantities to analogue or digital signals.173IEC 60694 ; IEC 60298BS 159 ; BS 64223; ANSI C37-20CCommon specifications for high-voltage switchgear and controlgear standards174IEC 60754Test on Gases Evolved During Combination of Electric Cables175IEC 60801Electromagnetic compatibility for industrial process measurement and control equipment176IEC 60947Low-voltage switchgear and controlgear Part 1: General rules.177IEC 60811-1-1Common test methods for Insulating & Sheathing Materials of elec & optical cables- determining the thicknessElectrical Standards\iec60811-1-1{ed2.1}b.pdf178IEC 60811-1-3Common test methods for Insulating & Sheathing Materials o felec & optical cables- determining the densityElectrical Standards\iec60811-1-3{ed2.1}b.pdf179180IEC 60851181IEC 60885Electrical Test Methods for Electrical Cables182IS 8828IEC 60898Electrical Accessories ; CB's for over current protection for household and similar installations.183IEC 60182184IS 13947-4-1IEC 60947-4-1Utilization Categories for Contacotrs (duty cycle for Relay Tripping Mechanism functioning)185IS 13947-3IEC 60947-3Utilization Categories for Switches186IS 13235IEC Pub 865 : 1986IS 5728Calculation of the Effects of Short-circuit Currents187188189IS 1370 ; IS 2494-1 ; IS 5996ISO 22 ; ISO 4184Power Ratings for different Pulleys190191 IEC 60073 Colours of indicator lights, pushbuttons and earthing switches 192 IEC 60144 Degrees of protection of enclosures for low voltage switchgear and controlgear 193 IEC 60157 Low Voltage Breakers, Switchgear and Controlgear 194 IEC 60158 Low voltage contactors 195 IEC 60185 Current transformers 196 IEC 60242 Standard frequencies for centralized network control installations 197 IEC 60255 Electrical relays. 198 IEC 60265 High-voltage switches.199 IEC 60267 Guide to the testing of circuit breakers with respect to out-of-phase switching200 IEC 60269 Low voltage fuses : General requirements. 201 IEC 60270Partial discharge measurements.202 IEC 60282High-voltage fuses Part 1: Current limiting fuses.203IEC 60298A.C metal-enclosed switchgear and controlgear for rated voltage above 1kV and up to and including 52kV.204IEC 60320Electrical Accessories205 IEC 60377 Control Switches 206 IEC 60391 Marking of insulated conductors 207 IEC 60408 Low voltage Air-Break Switches, Air-Break Disconnector, Air-Break Switch Disconnectors and Fuse Combination units. 208IEC 60598LUMINAIRE209 IEC 60255-4 Surge withstand capacity test 210 IEC 60255-6 General performance requirements 211 IEC 60255-22-1 Burst disturbance test 212 IEC 60255-22-2 Electrostatic discharge test 213 IEC 60255-22-3 Radiated electromagnetic field disturbance test 214IEC 60540Current Rating & technical data for 1100v, single core flexible , PVC Insulated cu conductor cables for power & control wiring.215 IEC 60060-1 Dielectric impulse test 216 EN 55022 Radio interference 217IEC 61000Electromagnetic compatibility (EMC). Part 1: General- Section 1: Application and interpretation of fundamental definitions and terms.218IEC 61034Measurement of Smoke Density of Electrical Cables Burning Under Defined Conditions219IEC 61641Enclosed low-voltage switchgear and controlgear assemblies. Guide for testing under conditions of arcing due to an internal fault.220IEC 62271Standards for High-voltage switchgear and controlgear 221IEC 62271-100High-voltage alternating current circuit-breakers222IEC 62271-102Alternating current disconnectors and earthing switches 223IEC 62271-200 A.C.-metal enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV 224IEC 62271-203 Gas-insulated metal-enclosed switchgear for rated voltages of 72,5 kV and above 225IEC 60871Power Capacitors226IEC 60432Incandescent lamps - Safety specifications - Part 1: Tungsten filament lamps for domestic and similar general lighting purposes227IEC 60357228IS 10957 : 1984Code of practice for lighting for ports & harbours.229IS 10894 : 1984Code of practice for lighting of educational institutions.23010322 part 1 - part 5LUMINAIRES GENERAL - PARTICULAR REQUIREMENTS FOR DIFF. APPLICATIONS231IS 11116 : 1984Code of practice for lighting of airport aprons232BS 3242:1970Specification for All Aluminium Alloy Conductor (AAAC)233BS 215 Part 2:1970Specification for Aluminium Conductor Steel Reinforced (ACSR)234BS 6349 1-7Code of practice for Maritime Strucutres.235BS 6234Specification for Polyethylene Insulation and Sheath of Electric Cables.236BS 6360Specification for Conductors in Insulated Cables and Cords237BS 6387Specification for performance requirements for cables required to maintain circuit integrity under fire conditions.238BS 6469Methods of Test for Insulation and Sheaths of Electric Cables239BS6622Specification for cables with extruded cross-linked polyethylene of ethylene propylene rubber insulation for rated voltages from 3800/6600 up-to 19000/33000V.240EN50014Electrical apparatus for potentially explosive atmospheres General requirements241EN50017Electrical apparatus for potentially explosive atmospheres Powder filling q242EN50018Electrical apparatus for potentially explosive atmospheres Flameproof enclosure d243EN50019Electrical apparatus for potentially explosive atmospheres Increased safety e244EN50020Electrical apparatus for potentially explosive atmospheres Intrinsic safety i245EN50028Electrical apparatus for potentially explosive atmospheres Encapsulation m246EN 50164Lightning Protection Components (LPC) - Part 1: Requirements for connection components, Requirements for conductors and earth electrodes247Copper Development Assosciation (UK)IS 375 ; IS 5082BusBar arrangements ; BusBar Material.248OISD 116FIRE WATER DESIGN AND LOCATION249IS 13573Heat Shrinkable Cable Termination Kits.250VDE 0278Accessories for Cable Rated upto 36kV251API RP 2003Protection Against Ignitions Arising Out of Static, Lightning, and Stray Currents252API 650-2009 Welded Tanks for Oil Storage253BS 7361 Part 1 1991Cathodic Protection Part 1 - Code ofPractice for Land and Marine Applications' British StandardsInstitution, U.K.254BS EN 12473General principles of cathodic protection in seawater.255BS EN 12474Cathodic protection for submarine pipelines256BS EN 12696Cathodic protection of steel in concretePart 1 : Atmospherically exposed concrete257BS EN 12954Cathodic protection of buried or immersedmetallic structures General principles and application forpipelines.258BS EN 13173Cathodic protection for steel offshore floatingstructures.259BS EN 13174 Cathodic protection for harbour installations260OISD 180Lightning ProtectionOISD 195Safety in Design, Operation, Inspection and Maintenance of HydroCarbon Gas Compressor Stations and TerminalsOISD 149Design aspects forsafety in electrical systemsOISD 113Classification of area for electrical installations at hydrocarbon processing and handling facilitiesOISD:163Process control room safetyOISD 173Fire Prevention & Protection system for Electrical Installations.EN 12464LIGHTING FOR INDOOR & OUTDOOR AREAS.IEC 61024IEC 60470Contactor ratings and Utilization Catagories.IEEE 1115 Battery sizing for Continous &Non-Continous load(Switchgear) shall follow IEEE 1115 or Equivalent standards. IEC 60050- I95/1998Code of practice for earthing and protection againstelectric shocks BS British Standards -UK IEC International Electro Technical Commission -Switzerland IEEE The Institute of Electrical and Electronics Engineers -USA IS0 International Standards Organisation -Switzerland NEMA National Electrical Manufacturers Association -USA ISIndian Standards -India ANSI American National Standards Institute -USA OISDOil Industry Safety Directorate-IndiaCPRICentral Power Research Institute-India

Sheet2List of applications to which standards are to be listed out:-ApplicationDescriptionStandards to be followedCATHODIC PROTECTION System by which a D.C. charge is induced across underground pipes to retard corrosion.

Gas and Oil Actuated Relay (Buchholz Relay)Lighting fixtures -IEC 60598BS 5489BS EN 13201 PARTS 1,2,3IS 10322 PARTS 1,2,3,4MotorsIEC 60034 PartsCablesBS 6360-1991BS 7655-0IEC 60502-1-2009IEC 60038TransformersIS 2026 Parts 1 to 5IEC 60076 Parts 1 to 5IS 3639IS 10561Current TransfomersIS 2705IEC 60044

Sheet30.3654102233334.8214285714334.80.1827051116531.462585034531.5531.515.87531.515.879.162817552200MVA1929.3161.87413.8kV150% overload2893.950.809378%200% overload3858.60.851.157.8OHM29702500013.516000220001850025000bus-10.125bus-20.2z1,z2=0.33phase system0.4254400.50.21250.9250.22972972974.35294117652012198527