8504 electric transformers, static converters & inductors

850410 Ballasts for Discharge Lamps or Tubes850421  Liquid Dielectric Transformers, Not Exceeding 650kva850422  Liquid Dielectric Transformers, Power Handling Capacity 650-10, 00kva850423  Liquid Dielectric Transformers, Exceeding 10, 000kva850431  Other Transformers, Power Handling Capacity Not Exceeding 1kva850432  Other Transformers, Exceeding 1kva But Not Exceeding 16kva850433  Other Transformers, Exceeding 16kva But Not Exceeding 500kva850434  Other Transformers, Power Handling Capacity Exceeding 500kva850440 Static Converters850450 Inductors850490 Parts, of Electrical Transformers, of Static Converters, of Inductors

Indian Standards

IS 1180 : Part 1 : 1989

Outdoor type three-phase distribution transformers up to and including 100 kVA 11 kV:Part 1 Non-sealed type

IS 1180 : Part 2 : 1989

Outdoor type three-phase distribution transformers up to and including 100 kVA 11 kV:Part 2 Sealed type

IS 1416 : 1972 Safety transformers

IS 1851 : 1997 Single Operator type arc welding transformers

IS 1885 : Part 28 : 1993

Electrotechnical vocabulary: Part 28 Instrument transformers

IS 1885 : Part 38 : 1993

Electrotechnical Vocabulary - Part 38 : Power Transformers and Reactors

IS 2026 : Part 1 : 1977

Power transformers: Part 1 General

IS 2026 : Part 2 : 1977

Power transformers: Part 2 Temperature-rise

IS 2026 : Part 3 : 1981

Power transformers: Part 3 Insulation level and dielectric tests

IS 2026 : Part 4 : 1977

Power transformers: Part 4 Terminal marking,tappings and connectioins

IS 2026 : Part 5 : 1994

Power Transformer: Part 5 Transformer/Reactor bushings minimum external clearance in air-specification

IS 2262 : 1963 Transformers for high voltage luminous discharge tubes

IS 2705 : Part 1 : 1992

Current transformers: Part 1 General requirements

IS 2705 : Part 2 : 1992

Current transformers: Part 2 Measuring current transformers

IS 2705 : Part 3 : 1992

Current transformers: Part 3 Protective current transformers

IS 2705 : Part 4 : 1992

Current transformers: Part 4 Protective current transformers for special purpose applications

IS 2772 : 1982 Non-flameproof mining transformers for use below ground

IS 3151 : 1982 Earthing transformers

IS 3156 : Part 1 : 1992

Voltage transformers: Part 1 General requirements

IS 3156 : Part 2 : 1992

Voltage transformers: Part 2 Measuring voltage transformers

IS 3156 : Part 3 : 1992

Voltage transformers: Part 3 Protective voltage transformers

IS 3156 : Part 4 : 1992

Voltage transformers: Part 4 Capacitor voltage transformers

IS 3639 : 1966 Specification for Fittings and Accessories for Power Transformers

IS 4146 : 1983 Application guide for voltage transformers

IS 4201 : 1983 Application Guide for Current Transformer

IS 4257 : Part I : 1981

Dimensions for Clamping Arrangements for Porcelain Transformer Bushings - Part I : For 12 kV to 36 kV Bushings

IS 4257 : Part 2 : 1986

Dimensions for clamping arrangements for porcelain transformer bushings: Part 2 For 72.5 kV and 123 kV bushings

IS 4804 : Part I : 1968

Specification for Resistance Welding Equipment - Part I : Single-phase Transformers

IS 5142 : 1969 Continuously variable voltage auto transformers

IS 5547 : 1983 Application guide for capacitor voltage transformers

IS 5553 : Part 6 : 1990

Reactors: Part 6 Earthing transformers (Neutral couplers)

IS 6088 : 1988 Specification for Oil-to-water Heat Exchangers for Transformers

IS 8201 : 1976 Specification for High Frequency Wideband Matching Transformer

IS 8322 : 1976 Guide for drafting of performance specifications for cores of transformers and inductors for telecommunication

IS 9819 : Part I : 1981

Specification for Line Output Transformers (Eht) Used With Tv Picture Tubes - Part I : General Requirements and Tests

IS 9819 : Part 2 : 1982

Specification for Line Output Transformers (EHT) Used with TV Picture Tubes - Part 2 : Type Lot 1S for 510mm, 590 mm and 610 mm TV Picture Tubes

IS 9819 : Part 3 : 1982

Specification for Line Output Transformers (EHT) Used with TV Picture Tubes - Part 3 : Type Lot 1h for 470 mm, 510 mm, 590 mm and 610 mm TV Picture Tubes

IS 9819 : Part 4 : 1984

Specification for Line Output Transformer (EHT) Used with TV Picture Tubes - Part 4 : Type Lot 2S for 310 mm and 340 mm TV Picture tubes

IS 9819 : Part 5 : 1989

Specification for Line Output Transformers (Eht) Used with Tv Picture Tubes - Part 5 : Lot for Colour Picture Tubes

Active

IS 11171 : 1985 Specification for Dry-Type Power Transformers

IS 11322 : 1985 Method for partial discharge measurement in instrument transformers

IS 11333 : 1985 Specification for Flameproof Dry Type Transformers For Use in Mines

IS QC 260000 : 2000

Transformers and Inductors for Use in Electronic and Telecommunication Equipment - Part 1 : Generic Specification

IS QC 260100 : 1998

Transformers and Inductors for Use in Electronic and Telecommunication Equipment - Part 2 : Sectional Specification for Signal Transformers on the Basis of Capability Approval Procedure

IS QC 260200 : 1999

Transformers and Inductors for Use in Electronic and Telecommunication Equipment - Part 3 : Sectional Specification for Power Transformers on the Basis of Capability Approval Procedure

IS QC 260300 : 2000

Transformers and Inductors for Use in Electronic and Telecommunication Equipment - Part 4 : Sectional Specification for Power Transformers for Switched Mode Power Supplies (SMPS) on the Basis of Capability Approval Procedure

IS QC 260400 : 2000

Transformers and Inductors for Use in Electronic and Telecommunication Equipment - Part 5 : Sectional Specification for Pulse Transformers on the Basis of Capability Approval Procedure

IS QC 260500 : 2000

Transformers and Inductors for Use in Electronic and Telecommunication Equipment - Part 6 : Sectional Specification for Inductors on the Basis of Capability Approval Procedure

IS 1534 : Part 1 : 1977

Ballasts for fluorescent lamps:Part 1 For switch start circuits

IS 4242 : 1967Methods of measurement of acoustical noise emitted by ballasts for gaseous discharge lamps

IS 5991 : 1971 Specification for Ballast Rakes

IS 6616 : 1982 Ballasts for high pressure mercury vapour lamps

IS 13021 : Part 1 : 1991

AC supplied electronic ballasts for tubular florescent lamps: Part 1 General and safety requirements

IS 13021 : Part 2 : 1991

ac Supplied Electronic Ballasts for Tubular Fluorescent Lamps - Specification - Part 2 : Performance Requirements

IS 9229 : 1979 Specification for Inductors for Electromagnetic Interference Suppression

American Standards

ANSI C57.12.10-1998, Transformers 230kV and Below, 833/958 through 8333/10417 kVA Single Phase, and 750/862through 60 000/80 000/100 000 kVAThree Phase, Requirements forCovers certain electrical, dimensional andmechanical characteristics and takes intoconsideration certain safety features of 60-hz,two-winding liquid-immersed transformers usedfor step-down or step-up purposes rated833/958 through 8333/10417 kVA, singlephase; 750/862 through 60 000/80 000/100000 kVA, three-phase without load tapchanging; and 3750/4687 through 60 000/80000/100 000 kVA with load tap changing.

ANSI C57.12.20-1997, Transformers –Overhead-Type DistributionTransformers, 500 kVA and Smaller: HighVoltage, 34 500 Volts and Below; LowVoltage, 7970/13 800Y Volts and BelowCovers certain electrical, dimensional andmechanical characteristics.

ANSI C57.12.24-2000, Transformers –Underground-Type Three-PhaseDistribution Transformers, 2500 kVA andSmaller: High Voltage 34 500 Grd Y/19920 Volts and Below; Low Voltage, 480Volts and Below – RequirementsCovers certain electrical and mechanicalcharacteristics and takes into consideration

certain safety features of three-phase, 60-Hz,liquid-immersed, self-cooled, underground-typetransformers rated 2500 KVA abd smaller withhigh voltages of 34 500 GRdY/19 920 volts andbelow, and with low voltages of 480 volts andbelow. These transformers are generally usedfor step-down purposes from an undergroundprimary cable supply and are suitable foroccasional submerged operation.

ANSI C57.12.29-1999, Switchgear andTransformers – Pad-Mounted Equipment– Enclosure Integrity for CoastalEnvironmentsCovers conformance tests and requirementsfor the intergrity ofabove-grade pad-mounted enclosures incoastal environments containing apparatusenergized in excess of 600 volts that may beexposed to the public including but not limitedto the following types of equipment enclosures:pad-mounted capacitors or inductors;pad-mounted distribution transformers;pad-mounted junction enclosures;pad-mounted metering equipment; andpad-mounted switchgear.

ANSI C57.12.50-1981 (R1998), DistributionTransformers 1 to 500 kVA,Single-Phase; and 15 to 500 kVA,Three-Phase with High-Voltage 601–34500 Volts, Low Voltage 120–600 Volt,Ventilated Dry-TypeThis standard is intended to set forthcharacteristics relating to performance, limitedelectrical and mechanical interchangeability,and saftey of the equipment described, and toassist in the proper selection of suchequipment

ANSI C57.12.51-1981 (R1998), Dry-Type

Power Transformers 501 kVA and Larger,Three-Phase with High-Voltage 601 to 34500 Volts, Low-Voltage 208Y/120 to 4160Volts, Requirements for VentilatedThis standard is intended to set forthcharacteristics relating to performance, limitedelectrical and mechanical interchangeability,and saftey of the equipment described, and toassist in the proper selection of suchequipment.

ANSI C57.12.52-1981 (R1998), Dry-TypePower Transformers, 501 kVA andLarger, Three-Phase with High-Voltage601 to 34 500 Volts, Low-Voltage208Y/120 to 4160 Volts, Requirementsfor SealedThis standard describes certain electrical andmechanical characteristics and takes intoconsideration certain saftey features of 60-Hz,two winding, three-phase, sealed dry-typetransformers rate 501 kVA and larger.

ANSI C57.12.55-1987 (R1998), Dry-TypeTransformers in Unit Installations,Including Unit Substations –Conformance StandardThis standard describes certain electrical,mechanical, and safety requirements andconformance tests for dry-type distribution andpower transformers and for autotransformers.These transformers may either be single-phaseor poly-phase, with ventilated, nonventilated orsealed enclosures

IEEE 111-2000, Standard for Wide Band(Greater than 1 Decade) TransformersPertains to electronic wide-band transformerstransmitting power within a wide band offrequencies covering typically at least onedecade in the frequency spectrum. Provision is

made for including data for use in the design offeedback amplifiers and control networks orother circuits in which the knowledge of thetransformer amplitude and phase-frequencyresponse is needed by the system designer.These transformers are required to transformvoltage within specified tolerances of amplitudeand phase when operating between specifiedimpedances. Guides to the application and testprocedures are included. These appendixescontain certain precautions and recommendedpractices. The standard also pertains to hybridtransformers, primarily used in thetelecommunications industry. The hybridtransformer is a wide-band transformer used ina manner which makes it part of a capacitance,

IEEE 1276-2006, Guide for the Applicationof High-Temperature Insulation Materialsin Liquid-Immersed Power TransformersTechnical information is provided related toliquid-immersed power tranformers insulatedwith high-temperature materials. Guidelines forapplying existing qualified high-temperaturematerials to certain insulation systems,recommendations for loading high-temperatureliquid-immersed power transformers, andtechnical information on insulation-systemtemperature ratings and test procedures forqualifying new high-temperature materials areincluded.

IEEE 1538-2000 (R2005), Guide forDetermination of Maximum WindingTemperature Rise in Liquid FilledTransformersProvides guidance for determining thehottest-spot temperature in distribution andpower transformers built in accordance withIEEE C57.12.00-2000.

IEEE 259-1999 (R2004), Standard TestProcedure for Evaluation of Systems ofInsulation for Dry-Type Specialty andGeneral-Purpose TransformersProvides guidelines for preparing samples,conducting tests, and analyzing results of testprocedures performed to evaluate insulationdesigned for dry-type specialty andgeneral-purpose transformers.

IEEE 295-1969 (R2000), Electronics PowerTransformersPertains to power transformers and inductorsthat are used in electronic equipment andsupplied by power lines or generators ofessentially sine wave or polyphase voltage.Guides to application and test procedures areincluded.

IEEE 388-1992 (R1998), Transformers andInductors in Electronic Power ConversionEquipmentPertains to transformers and inductors of boththe saturating and nonsaturating type that areused in electronic power conversionequipment. Power conversion equipmentincludes items known as inverters, converters,power conditioners, switching power supplies,switched mode power supplies, and the like.These items are mostly devices used tochange dc power from one voltage to another,to change dc power to ac, and to change acpower of one frequency to another frequency.This equipment is best described as utilizingtransistors, silicon controlled rectifiers (SCRs),or other similar devices that switch power onand off at a high rate in order to achieve thepower conversion or regulation desired.Therefore, this standard covers the varioustransformers and inductors that are used in anyof the above mentioned equipment or devices,except for transformers operated directly from

IEEE 389-1996, Recommended Practice forTesting Electronic Transformers andInductorsPresents a number of tests for use indetermining the significant parameters andperformance characteristics of electronictransformers and inductors.

IEEE 436-1991 (R1998), Guide for MakingCorona (Partial Discharge)Measurements on ElectronicsTransformersThis guide covers the detection of corona(partial discharge) and the measurement of itsmagnitude in electronics transformers. Testconditions, test apparatus, and testrequirements are included.

IEEE 62-1995 (R2005), Guide forDiagnostic Field Testing of Electric PowerApparatus – Part 1: Oil Filled PowerTransformers, Regulators, and ReactorsThis guide describes diagnostic tests andmeasurements which are performed in the fieldon oil-immersed power transformers andregulators. Whenever possible, shunt reactorsare treated in a similar manner to transformers.

IEEE 638-1992 (R2006), Standard forQualification of Class 1E Transformers forNuclear Power Generating StationsProcedures for demonstrating the adequacy ofnew Class 1E transformers, located in a mildenvironment of a nuclear power generatingstation, to perform their required safetyfunctions under postulated service conditionsare presented. Single and three phasetransformers rated 601 V to 15 000 V for thehighest voltage winding and up to 2500 kVA

(self-cooled rating) are covered.

IEEE C57.100-1999, DistributionTransformers, Test Procedure forThermal Evaluation of Oil-ImmersedThe procedure is intended to provide a directevaluation of the composite insulation systemfor either a power or distribution, liquidimmersed transformer.

IEEE C57.116-1990 (R2005), Guide forTransformers Directly Connected toGeneratorsDescribes selection and applicationconsiderations for the unit transformer and unitauxiliaries transformer.

IEEE C57.117-1986 (R2005), Guide forReporting Failure Data for PowerTransformers and Shunt Reactors onElectric Utility Power SystemsAddresses the reporting and statistical analysisof reliability of power transformers and shuntreactors used on electric utility power systems.

IEEE C57.12.01-2005, Standard GeneralRequirements for Dry-Type Distributionand Power Transformers Including Thosewith Solid-Cast and/or ResinEncapsulated WindingsElectrical, mechanical, and safety requirementsof ventilated, non-ventilated, and sealeddry-type distribution and power transformers orautotransformers (single and polyphase, with avoltage of 601 V or higher in the highestvoltage winding) are described.

IEEE C57.12.23-2002, Transformers -Underground-Type, Self-Cooled,Single-Phase Distribution Transformerswith Separable, Insulated, High-VoltageConnectors; High Voltage (24 940GrdY/14 400 V and Below) and LowVoltage (240/120 V 167 kVA andIntended for use as a basis for determiningperformance, interchangeability, and safety ofthe equipment covered, and to assist in theproper selection of such equipment. Coverscertain electrical, dimensional, and mechanicalcharacteristics and takes

IEEE C57.12.34-2004, StandardRequirements for Pad-Mounted,Compartmental-Type, Self-Cooled,Three-Phase Distribution Transformers,2500 kVA and Smaller: High-Voltage, 34500 GrdY/19 920 Volts and Below; LowVoltage 480 Volts and BelowIntended for use as a basis for determiningperformance, interchangeability, and safety ofthe equipment covered, and to assist in theproper selection of such equipment.

IEEE C57.12.35-1996 (R2004), StandardBar Coding for Distribution TransformersSets forth bar code label requirements foroverhead, padmounted, and underground-typedistribution transformers. Includesrequirements for data content, symbology, labellayout, print quality, and label life expectancy.

IEEE C57.12.37-2006, Standard for theElectronic Reporting of DistributionTransformer Test DataProvides a basis for the electronic reporting oftransformer test data on liquid immerseddistribution transformers.

IEEE C57.12.56-1994 (R1998), TestProcedure for Thermal Evaluation ofInsulation Systems for VentilatedDry-Type Power and DistributionTransformers (reinstatement ofadministratively withdrawn standard)Establishes a uniform method for determiningthe temperature classification of ventilateddry-type power and distribution transformerinsulation systems by test rather than bychemical composition.

IEEE C57.12.58-1991 (R2002), Guide forConducting a Transient Voltage Analysisof a Dry Type Transformer CoilCovers general recommendations formeasuring voltage transients in dry-typedistribution and power transformers.

IEEE C57.12.59-2002, Guide for Dry-TypeTransformer Through-Fault CurrentDurationSets forth recommendations believed essentialfor the application of overcurrent protectivedevices applied to limit the exposure time ofdry-type transformers to short-circuit currents.

IEEE C57.12.60-1998, Guide for TestProcedures for Thermal Evaluation ofInsulation Systems for Solid Cast andResin-Encapsulated Power andDistribution TransformersModifies an existing standard to a Guide andexpands its scope for improved application ofthe procedures for thermal evaluation of resincast transformers.

IEEE C57.12.70-2000 (R2006), StandardTerminal Markings and Connections forDistribution and Power TransformersStandard terminal markings and connectionsare described for single-phase and three-phasedistribution, power, and regulatingtransformers.

IEEE C57.12.80-2002, Terminology forPower and Distribution TransformersIs a compilation of terminology and definitionsprimarily related to electric power anddistribution transformers and associatedapparatus. Also includes similar data relatingto power systems and insulation that iscommonly involved in transformer technology.

IEEE C57.12.90-1999, Test Code forLiquid-Immersed Distribution, Power andRegulating Transformers and Guide forShort-Circuit Testing of Distribution andPower TransformersDescribe methods for performing testsspecified in American National StandardGeneral Requirements for Liquid-ImmersedDistribution, Power and RegulatingTransformers, ANSI/IEEE C57.12.00-1993, andother standards applicable to liquid-immerseddistribution, power, and regulatingtransformers. It is intended for use as a basisfor performance, safety, and proper testing ofsuch transformers. This standard applies to allliquid-immersed transformers exceptinstrument transformers, step-voltage andinduction voltage regulators, arc furnacetransformers, rectifier transformers, specialtytransformers, grounding transformers, andmine transformers. When this standard is usedon a mandatory basis, the words shall andmust indicate mandatory requirements. Thewords should and may refer to matters that are

recommended or permissive, but not

IEEE C57.120-1991 (R2006), LossEvaluation Guide for Power Transformersand ReactorsA method for establishing the dollar value ofthe electric power needed to supply the lossesof a transformer or reactor is provided.

IEEE C57.124-1991 (R1996), Detection ofPartial Discharges and the Measurementof Apparent Charge in Dry TypeTransformersApplies to the detection of partial dischargesoccurring in the insulation of dry-typetransformers or their components, and to themeasurement of the associated charge at theterminals when an alternating test voltage isapplied.

IEEE C57.13-2003, Standard Requirementsfor Instrument TransformersElectrical, dimensional, and mechanicalcharacteristics are covered, taking intoconsideration certain safety features, forcurrent and inductively coupled voltagetransformers of types generally used in themeasurement of electricity and the control ofequipment associated with the generation,transmission, and distribution of alternatingcurrent. The aim is to provide a basis forperformance, interchangeability, and safety ofequipment covered, and to assist in the properselection of such equipment. Accuracy classesfor metering service are provided. The testcode covers measurement and calculation ofratio and phase angle, demagnetization,impedance and excitation measurements,polarity determination, resistancemeasurements, short-time characteristics,temperature-rise tests, dielectric tests, and

measurement of open-circuit voltage of current

IEEE C57.13.1-1981 (R1999), Field Testingof Relaying Current TransformersDescribe field test methods that will assure thatthe current transformers are connectedproperly, are of marked ratio and polarity, andare in condition to perform as designed bothinitially and after a period of service.

IEEE C57.13.2-2005, StandardConformance Test Procedure forInstrument TransformersDescribes the tests and documentaryrequirements for conducting a conformancetest on instrument transformers. Covers testrequirements and control functions on 60 Hzprimary systems with voltages from 600 voltsthrough 38 kV.

IEEE C57.13.3-2005, Guide for Groundingof Instrument Transformer SecondaryCircuits and CasesProvides information on the grounding of:secondary circuits of electromagnetic currenttransformer (CT) and voltage transformer (VT)circuits; cases of relays, CTs and VTs;secondary circuits of opto-electronic CTs andVTs. The primary emphases of this guide arepersonnel safety and proper performance ofrelays at electric power frequencies.

IEEE C57.13.6-2005, Standard for HighAccuracy Instrument TransformersDefines one new 0.15 voltage transformeraccuracy class, two new 0.15 currenttransformer accuracy classes, two new currenttransformer burdens, and two new current

transformer routine accuracy test methods.

IEEE C57.136-2000 (R2005), Guide forSound Level Abatement andDetermination for Liquid-Immersed PowerTransformers and Shunt Reactors RatedOver 500 kVAGuidelines are provided for the selection ofsuitable sound reduction methods inoil-immersed power transformers and shuntreactors over 500 kVA.

IEEE C57.138-1998 (R200x),Recommended Practice for RoutineImpulse Test for DistributionTransformersGeneral test procedures for performing routinequality control test that is suitable forhigh-volume production line testing.Transformer connections, test methods, circuitconfigurations, and failure detection methodsare addressed. Covers liquid-immersed, singleandthree-phase distribution transformers.

IEEE C57.144-2004, Guide for MetricConversion of Transformer StandardsThis guide assists IEEE Power EngineeringSociety/Transformer Committee WorkingGroups in the interpretation of IEEE/ASTM SI10-2002 and other appropriate standards asthey convert their document to the use of SIunits.

IEEE C57.146-2005, Guide for theInterpretation of Gases Generated inSilicone-Immersed TransformersAssists the transformer operator in evaluatingDissolved Gas Analysis (DGA) data obtained

for silicone-filled transformers.

IEEE C57.18.10-1998 (R2003), StandardPractices and Requirements forSemiconductor Power RectifierTransformersIncludes practices and requirements forsemiconductor power rectifier transformers fordedicated loads rated single-phase 300 kWand above and three-phase 500 kW and above

IEEE C57.91-2004, Guide for LoadingMineral-Oil-Immersed TransformersGeneral recommendations for loading 65degree C rise mineral-oil-immersed distributionand power transformers are covered.

IEEE C57.93-1995 (R2001), Guide forInstallation of Liquid Immersed PowerTransformersApplies to the shipping, handling, inspection,installation, and maintenance ofliquid-immersed power transformers rated 501kVA and above with secondary voltages of1000 V and above.

IEEE C57.96-1999 (R2004), Distributionand Power Transformers, Guide forLoading Dry-Type (appendix to ANSIC57.12 standards)General recommendations for the loading ofdry-type distribution and power transformersthat have 80 C, 115 C, and 150 C averagewinding rises and insulation systems limited to150 C, 180 C, and 220 C maximumhottest-spot operating temperatures,respectively, are covered in this guide.

IEEE C57.98-1993 (R1999), Impulse Tests,Guide for Transformer (appendix toANSI/IEEE C57.12.90)Adds background information that will aid in theinterpretation and application of standards forimpulse tests for power transformers,distribution transformers, and instrumenttransformers.

ANSI/NECA 409-2002, RecommendedPractice for Installing and MaintainingDry-Type TransformersDescribes installation procedures for singleandthree-phase distribution and powertransformers and associated accessories rated600 Volts AC or less, and 0.25 kVA or more, ofthe following types:1) Ventilated, indoor and outdoor,self-cooled or forced air cooled.2) Nonventilated, indoor and outdoor,self-cooled or forced air cooled.This publication applies to general purpose,dry-type, two-winding transformers used forsupplying power, heating and lighting loads forcommercial, institutional, and industrial use innonhazardous locations both indoors andoutdoors. lso covers periodic routinemaintenance and troubleshooting proceduresfor transformers, and special procedures usedafter adverse operating conditions such as ashort-circuit, ground-fault, or immersion inwater.

ANSI/NECA 410-2005, Standard forInstalling and Maintaining Liquid-FilledTransformersThis recommended practice describesinstallation procedures for pad-mounted,sealed, self-cooled, compartmental, single andthree phase liquid filled distribution and powertransformers.

ANSI C82.7-1983 (R2003), Mercury LampTransformers, Constant Current (Series)Supply Type, Specifications forConcerns Mercury Lamp Transformers -Constant-Current (Series) Supply Type

ANSI C82.8-1988 (R2003), LampTransformers – Incandescent FilamentLamp Transformers – Constant-Current(Series) Supply Type

IEEE C57.12.40-2006, StandardRequirements for Secondary NetworkTransformers, Subway and Vault Types(Liquid-Immersed)Covers certain electrical, dimensional, andmechanical characteristics and takes intoconsideration certain safety features ofthree-phase, 60 Hz, liquid-immersed,secondary network transformers with a threeposition grounding switch, subway and vaulttypes, rated 2500 kVA and smaller; primary 34400 volts and below; secondary 216Y/125 voltsand 480Y/277 volts.

ANSI/NETA MTS 7.2.1-2001, NETAMaintenance Testing Specifications forDry-Type Transformers: Air-Cooled, 600Volts and Below - Small (167 kVSingle-Phase, 500 kVA Three-Phase, andSmaller) and Air-Cooled, All Above 600Volts and 600 Volts and Below - LargeProvises a specification for electricalmaintenance testing of Dry-Type Transformers:Air-Cooled, 600 Volts and Below - Small (167kV Single-Phase, 500 kVA Three-Phase, andSmaller) and Air-Cooled, All Above 600 Voltsand 600 Volts and Below- Large (Greater than167 kV Single-Phase and 500 kVAThree-Phase)Specification for electricalmaintenance testing of Dry-Type Transformers:

Air-Cooled, 600 Volts and Below - Small (167kV Single-Phase, 500 kVA Three-Phase, andSmaller) and Air-Cooled, All Above 600 Voltsand 600 Volts and Below- Large (Greater than167 kV Single-Phase and 500 kVAThree-Phase) This standard was listed forpublic review in the 6/16/2000 issue ofStandards Action. It is being resubmitted dueto substantive changes to the text. Thisannouncement concerns substantive changesmade at the Committee level following the

ANSI/NETA MTS 7.2.2-2001, MaintenanceTesting Specifications for Liquid-FilledTransformersProvides a specification for electricalmaintenance testing of liquid-filledtransformers.Specification for electricalmaintenance testing of liquid-filledtransformers. This standard was listed forpublic review in the 6/16/2000 issue ofStandards Action. It is being resubmitted dueto substantive changes to the text. Thisannouncement concerns substantive changesmade at the Committee level following thePublic Comment period previously published inANSI Standards Action. No Public Commentswere received during the initial announcement.Only the substantive changes are open forcomment.

ANSI/SCTE 120-2006, Test Method forBalance Ratio of 75-300 Ohm MatchingTransformerThis test procedure provides a method formeasuring the balance ratio of broadband radiofrequency (RF) devices whose primary purposeis to provide an impedance and connectormatch between 75 W, coaxial, type“F” and 300 W twin-lead openscrew connectorized devices.

UL 1561-2005, Dry-Type General Purposeand Power TransformersResolve comments received in response to aproposal to revise the Definition of Type 3REnclosures Provided in Table 5.3 of UL 1561.The original proposal was posted by UL onMarch 25, 2005.

UL 1585-2006, Standard for Safety forClass 2 and Class 3 TransformersPropose the removal of all references toFahrenheit from UL 1585 and a revision of themaximum allowable voltage potential oftransformers specified in Table 21.2 of UL1585

UL 506-2005, Specialty TransformersResolve comments received in response toproposals to revise UL 506 by: 1) Adding NewRequirements for Applying Insulation Betweenthe Input and Output Windings ofConcentrically Wound Transformers; 2)Revising the Procedure for Conducting theHeating Test; and 3) Adding Requirements forSpecialty Step-Up Transformers. The originalproposals were posted by UL on March 25,2005.

UL 5085-1-2006, Standard for Safety forLow Voltage Transformers - Part 1:General RequirementsResolve comments received by UL in responseto the proposed new Standard UL 5085-1. Theoriginal proposal for the new standard wasposted by UL on April 22, 2005.

UL 5085-2-2006, Standard for Safety for

Low Voltage Transformers - Part 2:General Purpose TransformersResolve comments received by UL in responseto the proposed new Standard UL 5085-2. Theoriginal proposal for the new standard wasposted by UL on April 22, 2005.

UL 5085-3-2006, Standard for Safety forLow Voltage Transformers - Part 3: Class2 and Class 3 TransformersResolve comments received by UL in responseto the proposed new Standard UL 5085-3. Theoriginal proposal for the new standard wasposted by UL on April 22, 2005.

International StandardsIEC

IEC 60044-1 Amd.1 Ed. 1.0 b:2000 Amendment 1 - Instrument transformers - Part 1:Current transformers

IEC 60044-1 Amd.2 Ed. 1.0 b:2002 Amendment 2 - Instrument transformers - Part 1:Current transformers

IEC 60044-1 Ed. 1.2 b:2003 Instrument transformers - Part 1: Currenttransformers"Applies to newly manufactured current transformers for usewith electrical measuring instruments and electrical protectivedevices at frequencies from 15 Hz to 100 Hz. Applies basicallyto transformers with separate windings, but also toautotransformers.

IEC 60044-2 Amd.1 Ed. 1.0 b:2000 Amendment 1 - Instrument transformers - Part 2:Inductive voltage transformers

IEC 60044-2 Amd.2 Ed. 1.0 b:2002 Amendment 2 - Instrument transformers - Part 2:Inductive voltage transformers

IEC 60044-2 Ed. 1.2 b:2003 Instrument transformers - Part 2 : Inductive

voltage transformers

IEC 60044-3 Ed. 2.0 b:2002 Instrument transformers - Part 3: Combinedtransformers"This part of IEC 60044 applies to newly manufacturedcombined transformers for use with electrical measuringinstruments and electrical protective devices at frequenciesfrom 15 Hz to 100 Hz. The requirements and tests of thisstandard, in addition to the requirements and tests of IEC60044-1, IEC 60044-2 and IEC 60044-5 cover current, voltageand capacitor voltage transformers, that are necessary forcombined instrument transformers. This standard shall beused in conjunction with IEC 60044-1 and IEC 60044-2. "

IEC 60044-5 Ed. 1.0 b:2004 Instrument transformers - Part 5: Capacitorvoltage transformers"This part of IEC 60044 applies to new single-phase capacitorvoltage transformers connected between line and ground forsystem voltages Um 72,5 kV at power frequencies from 15Hz to 100 Hz. They are intended to supply a low voltage formeasurement, control and protective functions. The capacitorvoltage transformer can be equipped with or withoutcarrier-frequency accessories for power line carrier-frequency(PLC) application at carrier frequencies from 30 kHz to 500kHz. "

IEC 60044-6 Ed. 1.0 b:1992 Instrument transformers - Part 6: Requirements forprotective current transformers for transientperformance"Concerns requirements and tests, in addition to those given inchapter 1 of IEC 60185, that are necessary when inductivecurrent transformers are used with electrical protectiveschemes in which the prime requirement is the maintenance ofa defined performance up to several times the rated currentwhen the current contains an exponentially decaying d.c.component of defined time constant. "

IEC 60044-7 Ed. 1.0 b:1999 Instrument transformers - Part 7: Electronicvoltage transformers"Applies to newly manufactured electronic voltagetransformers with analogue output, for use with electrical

measuring instruments and electrical protective devices atfrequencies from 15 Hz to 100 Hz. The standard covers opticalarrangements with electronic components. Three-phasevoltage transformers are not included, but some of therequirements apply."

IEC 60044-8 Ed. 1.0 en:2002 Instrument transformers - Part 8: Electroniccurrent transformers"This part of IEC 60044 applies to newly manufacturedelectronic current transformers having an analogue voltageoutput or a digital output, for use with electrical measuringinstruments and electrical protective devices at nominalfrequencies from 15 Hz to 100 Hz."

IEC 60050-321 Ed. 1.0 b:1986 International Electrotechnical Vocabulary. Chapter321: Instrument transformers

IEC 60050-421 Ed. 1.0 b:1990 International Electrotechnical Vocabulary. Chapter421: Power transformers and reactors

IEC 60076-1 Amd.1 Ed. 2.0 b:1999 Amendment 1 - Power transformers - Part 1:GeneralIEC 60076-1 Ed. 2.1 b:2000 Power transformers - Part 1: General Applies to three-phase and single-phase transformersincluding autotransformers. Defines the rating and connectionsymbols. Gives certain specifications for transformers having atapped winding. Defines information which shall be marked onthe rating plate and the tests to be conducted. SupersedesIEC 60076-1(1976) and IEC 60076-4 (1976).

IEC 60076-10 Ed. 1.0 b:2005 Power transformers - Part 10: Determination ofsound levels"Defines sound pressure and sound intensity measurementmethods by which sound power levels of transformers,reactors and their associated cooling auxiliaries may bedetermined. Is applicable to transformers and reactors coveredby the IEC 60076 series, IEC 60289, and the IEC 61378series, without limitation as regards size or voltage and when

fitted with their normal cooling auxiliaries. "

IEC 60076-10-1 Ed. 1.0 b:2005 Power transformers - Part 10-1: Determination ofsound levels - Application guide"Provides supporting information to help both manufacturersand purchasers apply the measurement techniques describedin IEC 60076-10. Describes the sources and characteristics oftransformer and reactor sound, provides practical guidance onmaking measurements, and discusses factors that mayinfluence the accuracy of the methods. Is applicable totransformers and reactors together with their associatedcooling auxiliaries."

IEC 60076-11 Ed. 1.0 b:2004 Power transformers - Part 11: Dry-typetransformers"Applies to dry-type power transformers (includingauto-transformers) having values of highest voltage forequipment up to and including 36 kV and at least one windingoperating at greater than 1,1 kV. Applies to all constructiontechnologies."

IEC 60076-13 Ed. 1.0 b:2006 Power transformers - Part 13: Self-protectedliquid-filled transformers"Applies to high-voltage/low-voltage self-protected liquid-filledand naturally cooled transformers for rated power 50 kVA to 1000 kVA for indoor or outdoor use having a primary winding(high-voltage) with highest voltage for equipment up to 24 kV;a secondary winding (low-voltage) with highest voltage forequipment of 1,1 kV."

IEC 60076-2 Ed. 2.0 b:1993 Power transformers - Part 2: Temperature rise "Includes clauses on identification according to coolingmethod, temperature-rise limits and type tests of temperaturerise. "

IEC 60076-3 Ed. 2.0 b:2000 "Power transformers - Part 3: Insulation levels,dielectric tests and external clearances in air "Gives insulation requirements for power transformers and thecorresponding insulation tests for specific windings. Applies tosingle-phase and three-phase oil-immersed power

transformers as defined in the IEC 60076-1. It Includesappendices on: partial discharge measurements duringinduced a.c. withstand voltage test on transformers;overvoltage transferred from a high-voltage winding to alow-voltage winding; information to be supplied with enquiriesand orders.

IEC 60076-4 Ed. 1.0 b:2002 Power transformers - Part 4: Guide to the lightningimpulse and switching impulse testing - Powertransformers and reactors"Gives guidance and explanatory comments on the existingprocedures for lightning and switching impulse testing of powertransformers to supplement the requirements of IEC 60076-3.Also generally applicable to the testing of reactors (see IEC60289), modifications to power transformer procedures beingindicated where required. Information is given on waveshapes,test circuits including test connections, earthing practices,failure detection methods, test procedures, measuringtechniques and interpretation of results."

IEC 60076-5 Ed. 3.0 b:2006 Power transformers - Part 5: Ability to withstandshort circuitIdentifies the requirements for power transformers to sustainwithout damage the effects of overcurrents originated byexternal short circuits. Describes the calculation proceduresused to demonstrate the thermal ability of a power transformerto withstand such overcurrents and both the special test andthe theoretical evaluation method used to demonstrate theability to withstand the relevant dynamic effects.

IEC 60076-7 Ed. 1.0 b:2005 Power transformers - Part 7: Loading guide foroil-immersed power transformersIs applicable to oil-immersed transformers and describes theeffect of operation under various ambient temperatures andload conditions on transformer life.

IEC 60076-8 Ed. 1.0 b:1997 Power transformers - Part 8: Application guide "Provides information to users about certain fundamentalservice characteristics of different transformer connections andmagnetic circuit designs; system fault currents; paralleloperation of transformers, calculation of voltage drop or rise

under load; selection of rated quantities and tapping quantities;application of transformers of conventional design to convertorloading; measuring techniques etc.... Cancels and replacesIEC 60606"

IEC 60076-SER Ed. 1.0 b:2006 Power transformers - ALL PARTS This pack contains all parts to IEC 60076

IEC 60092-303 Amd.1 Ed. 3.0 b:1997 Amendment 1 - Electrical installations in ships.Part 303: Equipment - Transformers for power andlighting

IEC 60092-303 Ed. 3.0 b:1980 Electrical installations in ships. Part 303:Equipment - Transformers for power and lighting"Applies to all transformers used for power lighting and staticconvertors and, where appropriate, starting transformers,static balancers, saturable reactors and transductors. "

IEC 60146-1-3 Ed. 3.0 b:1991 Semiconductor convertors - General requirementsand line commutated convertors - Part 1-3:Transformers and reactors"Specifies characteristics wherein convertor transformers differfrom ordinary power transformers. In all other respects, therules specified in IEC 60076 shall apply. "

IEC 60588-1 Ed. 1.0 b:1977 Askarels for transformers and capacitors. Part 1:General"Describes the electrical applications of askarels, the benefitsand risks arising from their use as well as various aspectsrelated to safety, disposal, packaging and labelling. "

IEC 60588-2 Ed. 1.0 b:1978 Askarels for transformers and capacitors. Part 2:Test methodsDescribes the test methods which are to be employed to testproperties of used and unused askarels.

IEC 60588-3 Ed. 1.0 b:1977 Askarels for transformers and capacitors. Part 3:Specifications for new askarels"Contains the requirements relating to the physical, chemicaland electrical properties of two types of askarel for capacitorsand four types of askarel for transformers. "

IEC 60588-4 Ed. 1.0 b:1979 Askarels for transformers and capacitors. Part 4:Guide for maintenance of transformer askarels inequipment"The purpose of this guide is to assist the power equipmentoperator in evaluating askarels in transformers, reactors andaccessory equipment operated at power frequencies and in hisefforts to maintain askarels in serviceable condition. Itrecommends standardized tests and evaluation procedures.Methods are outlined for reconditioning and reclaimingaskarels whenever necessary. Precautions are also outlinedfor the disposal of unserviceable askarels in order to preventenvironmental pollution. Local regulations should be followed. "

IEC 60588-5 Ed. 1.0 b:1979 Askarels for transformers and capacitors. Part 5:Screening test for compatibility of materials andtransformer askarels"The method described uses the changes of electrical and/orchemical characteristics of askarels, as well as variousphysical tests on materials exposed to askarels, in order toeliminate those materials which are not suitable owing to theircontaminating effect on askarels. "

IEC 60588-6 Ed. 1.0 b:1979 Askarels for transformers and capacitors. Part 6:Screening test for effects of materials on capacitoraskarelsThe method described uses the change of electricalcharacteristics of askarels to eliminate those materials whichare not suitable owing to their contaminating effect on theaskarels.

IEC 60740-1 Ed. 1.0 en:2005 Laminations for transformers and inductors - Part1: Mechanical and electrical characteristics

"Specifies the characteristics of laminations normally used ascores for transformers and inductors. The laminations aremade of sheets and strips of magnetic materials, specified inIEC 60404-8-4 and IEC 60404-8-7."

IEC 60740-2 Ed. 1.0 b:1993 Laminations for transformers and inductors for usein telecommunication and electronic equipment -Part 2: Specification for the minimumpermeabilities of laminations made of softmagnetic metallic materials"Specifies requirements for the minimum permeabilities oflaminations made of silicon-iron and nickel-iron alloys asdefined by the alloy classes C2, E1, E3 and E4 of IEC60404-1. "

IEC 60787 Ed. 1.0 b:1983 Application guide for the selection of fuse-links ofhigh-voltage fuses for transformer circuitapplication"Applies to the use, for transformer circuit applications, offuse-links of fuses complying with the requirements of IEC60282-1. Specifies criteria for co-ordination of high-voltagefuse-links with other circuit components in transformerapplications and gives guidance for the selection of suchfuse-!inks with particular reference to their time/currentcharacteristics and ratings. "

IEC 60852-1 Ed. 1.0 b:1986 Outline dimensions of transformers and inductorsfor use in telecommunication and electronicequipment. Part 1: Transformers and inductorsusing YEI-1 laminations"Specifies the outline dimensions of transformers andinductors, using E and I laminations, built for the three mostcommonly used forms of mounting style, namely bracketmounting, U-clamp mounting and printed wiring boardmounting. "

IEC 60852-2 Ed. 1.0 b:1992 Outline dimensions of transformers and inductorsfor use in telecommunication and electronicequipment - Part 2: Transformers and inductorsusing YEx-2 laminations for printed wiring boardmounting

IEC 60852-3 Ed. 1.0 b:1992 Outline dimensions of transformers and inductorsfor use in telecommunication and electronicequipment - Part 3: Transformers and inductorsusing YUI-1 laminations"Specifies the outline dimensions of transformers andinductors, using U and I laminations, built for the mostcommonly used forms of mounting style, namely verticalmounting and level mounting. "

IEC 60852-4 Ed. 1.0 b:1996 Outline dimensions of transformers and inductorsfor use in telecommunication and electronicequipment - Part 4: Transformers and inductorsusing YUI-2 laminations"Specifies the outline dimensions of transformers andinductors, using YUI-2 laminations, built for the mostcommonly used forms of mounting style. "

IEC 60852-5 Ed. 1.0 b:1994 Outline dimensions of transformers and inductorsfor use in telecommunication and electronicequipment - Part 5: Transformers and inductorsusing the series Q of C-cores"Specifies the outline dimensions of transformers andinductors, using the series Q of C-cores in accordance withIEC 60329 for assembly forms H, J and U. "

IEC 61007 Ed. 2.0 b:1994 Transformers and inductors for use in electronicand telecommunication equipment - Measuringmethods and test procedures"Describes measuring methods and test procedures forinductors and transformers for use in electronic andtelecommunication equipment that may be involved in anyspecifications for such components, in particular those formingpart of the IEC Quality Assessment System for ElectronicComponents (IECQ).

IEC 61021-1 Ed. 1.0 b:1990 Laminated core packages for transformers and

inductors used in telecommunication andelectronic equipment - Part 1: Dimensions"Specifies the dimensions, with their associated tolerances, ofa range of laminated core packages using YEE 2 laminations,both in their standard configuration and for assemblies usingtwo larger E parts. "

IEC 61021-2 Ed. 1.0 b:1995 Laminated core packages for transformers andinductors for use in telecommunication andelectronic equipment - Part 2: Electricalcharacteristics for cores using YEE2 laminationsSpecifies the electrical characteristics of laminated corepackages using YEE 2 laminations according to IEC 60740. Italso gives the marking and packaging requirements.

IEC 61248-1 Ed. 1.0 b:1996 Transformers and inductors for use in electronicand telecommunication equipment - Part 1:Generic specificationPrescribes the compliance requirements for manufacturers oftransformers and inductors for use in electronic equipment inorder to obtain capability approval and the component testschedules to be used for the assessment of that capability.

IEC 61248-2 Ed. 1.0 b:1996 Transformers and inductors for use in electronicand telecommunication equipment - Part 2:Sectional specification for signal transformers onthe basis of the capability approval procedure"Specifies how to prepare detail specifications for signaltransforme rs. Includes a blank detail specification, whichshows the format, a nd indicates which tests are considered tobe appropriate to this type of component. "

IEC 61248-3 Ed. 1.0 b:1996 Transformers and inductors for use in electronicand telecommunication equipment - Part 3:Sectional specification for power transformers onthe basis of the capability approval procedure"Specifies how to prepare detail specifications for powertransformers. Includes a blank detail specification, whichshows the format, and indicates which tests are considered tobe appropriate to this type of component. "

IEC 61248-4 Ed. 1.0 b:1996 Transformers and inductors for use in electronicand telecommunication equipment - Part 4:Sectional specification for power transformers forswitched mode power supplies (SMPS) on thebasis of the capability approval procedure"Specifies how to prepare detail specifications for SMPS powertransformers. Includes a blank detail specification, whichshows the format, and indicates which tests are considered tobe appropriate to this type of component. "

IEC 61248-5 Ed. 1.0 b:1996 Transformers and inductors for use in electronicand telecommunication equipment - Part 5:Sectional specification for pulse transformers onthe basis of the capability approval procedure"Specifies how to prepare detail specifications for pulsetransformers. Includes a blank detail specification, whichshows the format, and indicates which tests are considered tobe appropriate to this type of component. "

IEC 61248-6 Ed. 1.0 b:1996 Transformers and inductors for use in electronicand telecommunication equipment - Part 6:Sectional specification for inductors on the basis ofthe capability approval procedure"Specifies how to prepare detail specifications for inductors.Includes a blank detail specification, which shows the format,and indicates which tests are considered to be appropriate tothis type of component. "

IEC 61248-7 Ed. 1.0 b:1997 Transformers and inductors for use in electronicand telecommunication equipment - Part 7:Sectional specification for high-frequencyinductors and intermediate frequency transformerson the basis of the capability approval procedure"Specifies how to prepare detail specifications forhigh-frequency inductors and intermediate frequencytransformers between 10 kHz and 2 GHz.Includes a blankdetail specification, which shows the format and indicateswhich tests are considered to be appropriate to this type ofcomponent. "

IEC 61378-1 Ed. 1.0 b:1997 Convertor transformers - Part 1: Transformers forindustrial applications"Deals with specifications, design and testing of powertransformers and reactors which are intended for integrationwithin semiconductor convertor plants. It is limited toapplications of power convertors of any power rating for localdistribution and for equipment not exceeding 36kV. It is notapplicable to transformers for HVDC power transmission."

IEC 61378-2 Ed. 1.0 b:2001 Convertor transformers - Part 2: Transformers forHVDC applications" This part of IEC 61378 applies to oil-immersed three-phaseand -single-phase convertor transformers for use in HVDCpower transmission. It applies to transformers having two,three or multiple windings. This standard does not apply toconvertor transformers for industrial applications (see IEC61378-1) and to convertor transformers for tractionapplications (see IEC 60310). "

IEC 61378-3 Ed. 1.0 b:2006 Converter transformers - Part 3: Application guide "Provides information to users about specific topics related toindustrial and HVDC converter transformers with design,construction, testing and operating conditions differing fromconventional transformers used in power systems. Alsoprovides manufacturers with the technical background thatforms the basis for the principles used within IEC 61378-1 andIEC 61378-2. Supplements the information provided in IEC60076-8."

IEC 61558-2-1 Ed. 1.0 b:1997 "Safety of power transformers, power suply unitsand similar - Part 2: Particular requirements forseparating transformers for general use ""This part 2 of IEC 61558 applies to stationary or portable,single-phase or polyphase, air-cooled separating transformers,associated or not. It has the status of a group safetypublication in accordance with IEC Guide 104. This part 2supplements or modifies the corresponding clauses in IEC61558-1 This Standard replaces Chapter I of IEC 60989 "

IEC 61558-2-12 Ed. 1.0 b:2001 "Safety of power transformers, power supply units

and similar devices - Part 2-12: Particularrequirements for constant voltage transformers""This part 2 of IEC 61558 is intended to be used in conjunctionwith IEC 61558-1. This international standard deals with allaspects of safety such as electrical, thermal and mechanical.This part of IEC 61558 applies to stationary or portable,single-phase or polyphase, air-cooled (natural or forced),associated or independent: - constant voltageauto-transformers; - constant voltage separating transformers;- constant voltage isolating transformers; - constant voltagesafety isolating transformers; having a rated supply voltagenot exceeding 1 000 V a.c., a rated frequency not exceeding500 Hz, an internal operational frequency not exceeding 30kHz and no limitation of the rated output. It has the status of agroup safety publication in accordance with IEC Guide 104 "

IEC 61558-2-13 Ed. 1.0 b:1999 "Safety of power transformers, power supply unitsand similar devices - Part 2-13: Particularrequirements for auto-transformers for generaluse""Deals with all aspects of safety such as electrical, thermal andmechanical. This part 2-13 of IEC 61558 applies tostationary or portable, single-phase or polyphase, air-cooled(natural or forced), independent or associatedauto-transformers, having a rated supply voltage notexceeding 1000 V a.c., a rated frequency not exceeding 500Hz. This part 2-13 is intended to be used in conjunction withIEC 61558-1. This standard replaces Chapter III of IEC60989. It has the status of a group safety publication inaccordance with IEC Guide 104."

IEC 61558-2-15 Ed. 1.0 b:1999 "Safety of power transformers, power supply unitsand similar - Part 2-15: Particular requirements forisolating transformers for the supply of medicallocations""This part 2-15 of IEC 61558 applies to stationary,single-phase or polyphase, air-cooled (natural or forced)isolating transformers for the supply of group II medicallocations, designed to be permanently connected to the fixedwiring of IT supply system. This standard also applies totransformers incorporating electronic circuits. This standarddoes not apply to external circuits and their components

intended to be connected to the input and output terminals orsocket-outlets of the transformer. It has the status of a groupsafety publication in accordance with IEC Guide 104. Thispart 2 is intended to be used in conjunction with IEC 61558-1."

IEC 61558-2-17 Ed. 1.0 b:1997 "Safety of power transformers, power supply unitsand similar - Part 2: Particular requirements fortransformers for switch mode power supplies ""This part 2 of IEC 61558 applies to associated powertransformers for switch mode power supplies, single-phase orpolyphase, air-cooled: separating transformers; isolatingtransformers; safety isolating transformers, 10 kVA forsingle-phase transformers; 16 kVA for polyphasetransformers. This standard is applicable to dry typetransformers. The windings may be encapsulated ornon-encapsulated. It has the status of a group safetypublication in accordance with IEC Guide 104 This part 2supplements or modifies the corresponding clauses in IEC61558-1 "

IEC 61558-2-19 Ed. 1.0 b:2000 "Safety of power transformers, power supply unitsand similar devices - Part 2-19: Particularrequirements for perturbation attenuationtransformers ""This International Standard deals with all aspects of safetysuch as electrical, thermal and mechanical. This part 2-19 ofIEC 61558 applies to stationary or portable, single-phase orpoly-phase, air-cooled (natural or forced), independent orassociated, isolating or safety isolating transformers, having arated supply voltage not exceeding 1 000 V a.c., a ratedfrequency not exceeding 500 Hz, a rated output not exceeding10 kVA. Perturbation attenuation transformers are intended tothe supply of office machines and the like and have amid-point lead out in the output circuit in order to attenuatemains borne disturbances. In addition, double or reinforcedinsulation between circuits required by the installation rules orby the appliance specification is fulfilled by using thistransformer. This part 2-19 is intended to be used inconjunction with IEC 61558-1 It has the status of a groupsafety publication in accordance with IEC Guide 104. "

IEC 61558-2-2 Ed. 1.0 b:1997 "Safety of power transformers, power supply unitsand similar - Part 2-2: Particular requirements forcontrol transformers ""This part of IEC 61558 applies to stationary or portable,single-phase or poly-phases, air-cooled control transformersassociated or otherwise. It has the status of a group safetypublication in accordance with IEC Guide 104. This part 2-2supplements or modifies the corresponding clauses in IEC61558-1. This standard replaces chapter II, section 1 of IEC60989."

IEC 61558-2-20 Ed. 1.0 b:2000 "Safety of power transformers, power supply unitsand similar devices - Part 2-20: Particularrequirements for small reactors ""This part of IEC 61558 applies to stationary or portable,single-phase or poly-phase, air-cooled (natural or forced)general purpose small reactors, including alternating current,premagnetised and current compensated reactors,independent or associated, having a rated supply voltage notexceeding 1000 V a.c. or d.c. and rated frequency notexceeding 1 MHz, the rated power not exceeding - 2 kVARa.c. (2 kW d.c.) for single-phase reactors; - 10 kVAR a.c. (10kW d.c.) for poly-phase reactors. This part 2-20 is intended tobe used in conjunction with IEC 61558-1. It has the status of agroup safety publication in accordance with IEC Guide 104. "

IEC 61558-2-23 Ed. 1.0 b:2000 "Safety of power transformers, power supply unitsand similar devices - Part 2-23: Particularrequirements for transformers for constructionsites""Applies to stationary or portable single-phase or poly-phaseair-cooled (natural or forced) independent or associated,isolating or safety isolating transformers intended for use onconstruction sites, having a rated supply voltage not exceeding1 000 V a.c., and a rated frequency not exceeding 500 Hz.This part 2-23 is intended to be used in conjunction with IEC61558-1. It has the status of a group safety publication inaccordance with IEC Guide 104."

IEC 61558-2-3 Ed. 1.0 b:1999 "Safety of power transformers, power supply units

and similar devices - Part 2-3: Particularrequirements for ignition transformers for gas andoil burners""Deals with all aspects of safety such as electrical, thermal andmechanical aspects. This part of IEC 61558 applies to fixedsingle-phase air-cooled (natural or forced) associatedtransformers (incorporated or not) used in the ignition systemof gas and oil burners, having a rated supply voltage notexceeding 1 000 V a.c. and a rated frequency not exceeding500 Hz. The rated output current does not exceed 500 mA a.c.This part 2-3 is intended to be used in conjunction with IEC61558-1. It has the status of a group safety publication inaccordance with IEC Guide 104."

IEC 61558-2-4 Ed. 1.0 b:1997 "Safety of power transformers, power supply unitsand similar - Part 2: Particular requirements forisolating transformers for general use ""This part 2 of IEC 61558 applies to stationary or portable,single-phase or polyphase, air-cooled isolating transformers,associated or otherwise. It has the status of a group safetypublication in accordance with IEC Guide 104. This part 2supplements or modifies the corresponding clauses in IEC61558-1, This Standard replaces Chapter I of IEC 742. "

IEC 61558-2-5 Ed. 1.0 b:1997 "Safety of power transformers, power supply unitsand similar - Part 2-5: Particular requirements forshaver transformers and shaver supply units ""This part 2-5 of IEC 61558 applies to shaver supply units,embodying one or more socket-outlets and a single phase aircooled isolating transformer. It has the status of a group safetypublication in accordance with IEC Guide 104. This part 2-5supplements or modifies the corresponding clauses in IEC61558-1. This standard replaces chapter II, section 1, of IEC60742."

IEC 61558-2-6 Ed. 1.0 b:1997 "Safety of power transformers, power supply unitsand similar - Part 2: Particular requirements forsafety isolating transformers for general use ""This part 2 of IEC 61558 applies to stationary or portable,

single-phase or polyphase, air-cooled safety isolatingtransformers, associated or otherwise. It has the status of agroup safety publication in accordance with IEC Guide 104This part 2 supplements or modifies the corresponding clausesin IEC 61558-1, This Standard replaces Chapter III, Section1 of IEC 60742. "

IEC 61558-2-7 Ed. 1.0 b:1997 "Safety of power transformers, power supply unitsand similar - Part 2: Particular requirements fortransformers for toys ""This part 2 of IEC 61558 applies to transformers for toyshaving a rated supply voltage not exceeding 250 V a.c., arated frequency of 50/60 Hz, a rated output voltage notexceeding 24 V a.c. or 33 V ripple-free d.c. and a rated outputnot exceeding 200 VA and a rated output current notexceeding 10 A. It has the status of a group safetypublication in accordance with IEC Guide 104 This part 2supplements or modifies the corresponding clauses in IEC61558-1 This standard replaces Chapter III, Section 2 of IEC60742. "

IEC 61558-2-8 Ed. 1.0 b:1998 "Safety of small power transformers, power supplyunits and similar - Part 2-8: Particularrequirements for bell and chime transformers ""Applies to fixed, single-phase, air-cooled independant orassociated safety isolating transformers. This part 2supplements or modifies the corresponding clauses in IEC61558-1. It has the status of a group safety publication inaccordance with IEC Guide 104. This standard replacessection 3 of chapter III of IEC 60742."

IEC 61558-2-9 Ed. 1.0 b:2002 "Safety of power transformers, power supply unitsand similar products - Part 2-9: Particularrequirements for transformers for class IIIhandlamps for tungsten filament lamps""This Part 2-9 of IEC 61558 applies to stationary or portablesingle-phase air-cooled (natural or forced) associated safetyisolating transformers for class III handlamps for tungstenfilament lamps, having a rated supply voltage not exceeding 1000 V a.c., a rated frequency not exceeding 500 Hz and arated output not exceeding 10 kVA. It has the status of a

group safety publication in accordance with IEC Guide 104 "

IEC 61797-1 Ed. 1.0 b:1996 Transformers and inductors for use intelecommunication and electronic equipment -Main dimensions of coil formers - Part 1: Coilformers for laminated cores"Specifies the main dimensions of coil formers for transformersand inductors, using a square stack of the laminations insertedin the coil formers."

IEC 62032 Ed. 1.0 en:2005 "Guide for the application, specification, andtesting of phase-shifting transformers ""Covers the application, specification, theory of operation, andfactory and field testing of single phase and three-phaseoil-immersed phase-shifting transformers (PSTs). Providesguidance to those specifying, designing, and using PSTs.

IEC 62041 Ed. 1.0 b:2003 "Power transformers, power supply units, reactorsand similar products - EMC requirements ""This international product family standard applies toindependent transformers, reactors and power supply unitscovered by IEC 60989 and the IEC 61558 series of standards.It prescribes the electromagnetic compatibility requirements foremission and immunity in the frequency range 0 Hz to 1 000MHz."

IEC/TR 60616 Ed. 1.0 b:1978 Terminal and tapping markings for powertransformersGives guidance in accordance with the rules given in IEC60445. Has the status of a technical report.

IEC/TS 60076-14 Ed. 1.0 b:2004 Power transformers - Part 14: Design andapplication of liquid-immersed power transformersusing high-temperature insulation materials"Provides design, testing and loading information for use by

both the manufacturer and user of liquid-immersed powertransformers using either high-temperature insulation orcombinations of high-temperature and conventionalinsulation."

IEC/TS 61639 Ed. 1.0 b:1996 "Direct connection between power transformersand gas-insulated metal-enclosed switchgear forrated voltages of 72,5 kV and above ""Applicable to the single-phase connection assembliesbetween gas-insulated metal-enclosed switchgear for ratedvoltages of 72,5 kV and above satisfying the requirements ofIEC 60517 and power transformers satisfying the requirementsof IEC 60076 and fitted with completely immersed bushingssatisfying the requirements of IEC 60137, one end of which isimmersed in the transformer oil, and the other end in theinsulating gas of the switchgear. Its purpose is to establishelectrical and mechanical interchangeability in the interfacearrangement of these connection assemblies and to determinethe limits of supply. "

ISO Standards

ISO 10656:1996Electric resistance welding - Integrated transformers forwelding guns

ISO 12166:1997Resistance welding equipment - Particular specificationsapplicable to transformers with one secondary windingfor multi-spot welding, as used in the automobileindustry

ISO 5826:1999Resistance welding equipment - Transformers - Generalspecifications applicable to all transformers

ISO 7284:1993

Resistance welding equipment - Particular specificationsapplicable to transformers with two separate secondarywindings for multi-spot welding, as used in theautomobile industry

Additional requirements

Transformers & inductors

US Code – Title 42, Chapter 77 – Energy Conservation

http://fatty.law.cornell.edu/uscode/html/uscode42/usc_sup_01_42_10_77.html

http://fatty.law.cornell.edu/uscode/search/display.html?terms=testing%20and%20labeling%20requirements%20for%20air%20pumps&url=/uscode/html/uscode42/usc_sup_01_42_10_77notes.html

US Code 6315

A labelling rule prescribed in accordance with this section shall require the product discloses by label, the energy efficiency of such article, determined in accordance with test procedures under section 6314…. http://fatty.law.cornell.edu/uscode/search/display.html?terms=testing%20and%20labeling%20requirements%20for%20air%20pumps&url=/uscode/html/uscode42/usc_sec_42_00006315----000-.html

Distribution Transformers

Energy Conservation Requirements for Distribution Transformers

Lamp ballasts

Federal Standards

Standards for dishwashers; clothes washers; clothes dryers; fluorescent lamp ballasts Each fluorescent lamp ballast— (A) (i) manufactured on or after January 1, 1990; (ii) sold by the manufacturer on or after April 1, 1990; or

(iii) incorporated into a luminaire by a luminaire manufacturer on or after April 1, 1991; and (B) designed— (i) to operate at nominal input voltages of 120 or 277 volts; (ii) to operate with an input current frequency of 60 Hertz; and (iii) for use in connection with an F40T12, F96T12, or F96T12HO lamps; shall have a power factor of 0.90 or greater and shall have a ballast efficacy factor not less than the following:

  Application for Operation of

Ballast Input Voltage

Watts Total Nominal Lamp

Ballast Efficacy Factor

one F40T12 lamp 120 40  1.805277 40  1.805

two F40T12 lamps 120 80  1.060277 80  1.050

two F96T12 lamps 120 150 0.570277 150 0.570

two F96T12HO lamps 120 220 0.390277 220 0.390

The standards described in paragraph (5) do not apply to (A) a ballast which is designed for dimming or for use in ambient temperatures of 0° F or less, or (B) a ballast which has a power factor of less than 0.90 and is designed for use only in residential building applications. (7) (A) The Secretary shall publish a final rule no later than January 1, 1992, to determine if the standards established under paragraph (5) should be amended, including whether such standards should be amended so that they would be applicable to ballasts described in paragraph (6) and other fluorescent lamp ballasts. Such rule shall contain such amendment, if any, and provide that the amendment shall apply to products manufactured on or after January 1, 1995. (B) After January 1, 1992, the Secretary shall publish a final rule no later than five years after the date of publication of a previous final rule. The Secretary shall determine in such rule whether to amend the standards in effect for fluorescent lamp ballasts, including whether such standards should be amended so that they would be applicable to additional fluorescent lamp ballasts. (C) Any amendment prescribed under subparagraph (B) shall apply to products manufactured after a date which is five years after— (i) the effective date of the previous amendment; or (ii) if the previous final rule did not amend the standards, the earliest date by which a previous amendment could have been effective;

except that in no case may any amended standard apply to products manufactured within three years after publication of the final rule establishing such amended standard.

General service fluorescent lamps and incandescent reflector lamps (1) (A) Each of the following general service fluorescent lamps and incandescent reflector lamps manufactured after the effective date specified in the tables listed in this paragraph shall meet or exceed the following lamp efficacy and CRI standards:

FLUORESCENT LAMPS Lamp Type Nominal Lamp

Wattage Minimum CRI

Minimum Average Lamp Efficacy (LPW)

Effective Date (Months)

4-foot medium bi-pin

35 W 69 75.0 36

35 W 45 75.0 362-foot U-shaped

35 W 69 68.0 36

35 W 45 64.0 368-foot slimline 65 W  69 80.0 18

65 W 45 80.0 188-foot high output

100 W 69 80.0 18

100 W 45 80.0 18INCANDESCENT REFLECTOR LAMPS

Nominal Lamp Wattage

Minimum Average Lamp Efficacy (LPW)

Effective Date (Months)

40–50  10.5 3651–66  11.0 3667–85  12.5 3686–115  14.0 36116–155 14.5 36156–205 15.0 36

(B) For the purposes of the tables set forth in subparagraph (A), the term “effective date” means the last day of the month set forth in the table which follows October 24, 1992. (2) Notwithstanding section 6302 (a)(5) of this title and section 6302 (b) of this title, it shall not be unlawful for a manufacturer to sell a lamp which is in compliance with the law at the time such lamp was manufactured. (3) Not less than 36 months after October 24, 1992, the Secretary shall initiate a rulemaking procedure and shall publish a final rule not later than the end of the 54-month period beginning on October 24, 1992, to determine if the standards established under paragraph (1) should be amended. Such rule shall contain such amendment, if any, and

provide that the amendment shall apply to products manufactured on or after the 36-month period beginning on the date such final rule is published. (4) Not less than eight years after October 24, 1992, the Secretary shall initiate a rulemaking procedure and shall publish a final rule not later than nine years and six months after October 24, 1992, to determine if the standards in effect for fluorescent lamps and incandescent lamps should be amended. Such rule shall contain such amendment, if any, and provide that the amendment shall apply to products manufactured on or after the 36-month period beginning on the date such final rule is published. (5) Not later than the end of the 24-month period beginning on the date labeling requirements under section 6294 (a)(2)(C) of this title become effective, the Secretary shall initiate a rulemaking procedure to determine if the standards in effect for fluorescent lamps and incandescent lamps should be amended so that they would be applicable to additional general service fluorescent and general service incandescent lamps and shall publish, not later than 18 months after initiating such rulemaking, a final rule including such amended standards, if any. Such rule shall provide that the amendment shall apply to products manufactured after a date which is 36 months after the date such rule is published.

(6) (A) With respect to any lamp to which standards are applicable under this subsection or any lamp specified in section 6317 of this title, the Secretary shall inform any Federal entity proposing actions which would adversely impact the energy consumption or energy efficiency of such lamp of the energy conservation consequences of such action. It shall be the responsibility of such Federal entity to carefully consider the Secretary’s comments. (B) Notwithstanding subsection (n)(1) of this section, the Secretary shall not be prohibited from amending any standard, by rule, to permit increased energy use or to decrease the minimum required energy efficiency of any lamp to which standards are applicable under this subsection if such action is warranted as a result of other Federal action (including restrictions on materials or processes) which would have the effect of either increasing the energy use or decreasing the energy efficiency of such product. (7) Not later than the date on which standards established pursuant to this subsection become effective, or, with respect to high-intensity discharge lamps covered under section 6317 of this title, the effective date of standards established pursuant to such section, each manufacturer of a product to which such standards are applicable shall file with the Secretary a laboratory report certifying compliance with the applicable standard for each lamp type. Such report shall include the lumen output and wattage consumption for each lamp type as an average of measurements taken over the preceding 12-month period. With respect to lamp types which are not manufactured during the 12-month period preceding the date such standards become effective, such report shall be filed with the Secretary not later than the date which is 12 months after the date manufacturing is commenced and shall include the lumen output and wattage consumption for each such lamp type as an average of measurements taken during such 12-month period.

Appendix Q to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

1. Definitions

 1.1ANSI Standard means a standard developed by a committee accredited by the American National Standards Institute.

 1.2Ballast input voltage means the rated input voltage of a fluorescent lamp ballast.

 1.3F4OT12 lamp means a nominal 40 watt tubular fluorescent lamp which is 48 inches in length and one and a half inches in diameter, and conforms to ANSI standard C78.1–1978(R1984).

 1.4F96T12 lamp means a nominal 75 watt tubular fluorescent lamp which is 96 inches in length and one and one-half inches in diameter, and conforms to ANSI Standard C78.1–1978 (R1984).

 1.5F96T12HO lamp means a nominal 110 watt tubular fluorescent lamp which is 96 inches in length and one and a half inches in diameter, andto operate.

 1.6Input current means the root-mean-square (RMS) current in amperes delivered to a fluorescent lamp ballast.

 1.7Luminaire means a complete lighting unit consisting of a fluorescent lamp or lamps, together with parts designed to distribute the light, to position and protect such lamps, and to connect such lamps to the power supply through the ballast.

 1.8Nominal lamp watts means the wattage at which a fluorescent lamp is designed to operate.

 1.9Power factor means the power input divided by the product of ballast input voltage and input current of a fluorescent lamp ballast, as measured under test conditions specified in ANSI Standard C–82.2–1984.

 1.10Power input means the power consumption in watts of a ballast and fluorescent lamp or lamps, as determined in accordance with the test procedures specified in ANSI Standard C82.2–1984.

 1.11Relative light output means the light output delivered through the use of a ballast divided by the light output delivered through the use of a reference ballast, expressed as a percent, as determined in accordance with the test procedures specified in ANSI Standard C82.2–1984.

 1.12Residential building means a structure or portion of a structure which provides facilities or shelter for human residency, except that such term does not include any multifamily residential structure of more than three stores above grade.

 1.13ANSI Standard C82.2–1984 means the test standard published by the American National Standard Institute (ANSI), titled “American National Standard for Fluorescent Lamp Ballasts—Method of Measurement, 1984”, and designated as ANSI C82.2–1984.

2. Test conditions. The test conditions for testing fluorescent lamp ballasts shall be done in accordance with the American National Standard Institute (ANIS) Standard C82.2–1984, “American National Standard for Fluorescent Lamp Ballasts—Methods of Measurement,” approved October 21, 1983. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR, part 51. Copies may be obtained from ANSI Publication Sales, 1430 Broadway, New York, NY 10068. Copies may be inspected at the Department of Energy, Freedom of Information Reading Room, Room 1E–190, Fluorescent Lamp Ballasts, Docket No. CE–RM–89–102, 1000 Independence Avenue, SW, Washington DC 20585, or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC 20001. Any subsequent amendment to this standard by the standard-setting organization will not affect the DOE test procedures unless and until amended by DOE. The test conditions are described in sections 4, 5, 6, 7, and 21 of ANSI Standard C82.2–1984.

 3.Test Method and Measurements.

The test method for testing fluorescent lamp ballasts shall be 3.1. done in accordance with ANSI Standard C82.2–1984.

 3.2Instrumentation. The instrumentation shall be as specified by sections 8, 9, 10, 11, 12, 19.1, and 23.2 of ANSI Standard C82.2–1984.

 3.3Electric Supply.

 3.3.1.Input Power. Measure the input power (watts) to the ballast in accordance with ANSI Standard C82.2–1984, section 3.2.1(3) and section 4.

 3.3.2Input Voltage. Measure the input voltage (volts) (RMS) to the ballast in accordance with ANSI Standard C82.2–1984, section 3.2.1(1) and section 4.

 3.3.3Input Current. Measure the input current (amps) (RMS) to the ballast in accordance with ANSI Standard C82.2–1984, section 3.2.1(2) and section 4.

 3.4Light Output.

Measure the light output of the reference lamp with the 3.4.1 reference ballast in accordance with ANSI Standard C82.2–1984, section 16.

Measure the light output of the reference lamp with the test 3.4.2 ballast in accordance with ANSI Standard C82.2–1984, section 16.

 4.Calculations.

Calculate relative light output: 4.1

ec14no91.053

Where:

photocell output of lamp on test ballast is determined in accordance with section 3.4.2, expressed in watts, and photocell output of lamp on ref. ballast is determined in accordance with section 3.4.1, expressed in watts.

Determine the Ballast Efficacy Factor (BEF) using the following 4.2. equations:

(a) Single lamp ballast

ec14no91.054

(b) Multiple lamp ballast

ec14no91.055

Where:

input power is determined in accordance with section 3.3.1,

relative light output as defined in section 4.1, and

average relative light output is the relative light output, as defined in section 4.1, for all lamps, divided by the total number of lamps.

Determine Ballast Power Factor (PF): 4.3

ec14no91.056

Where:

Input power is as defined in section 3.3.1,

Input voltage is determined in accordance with section 3.3.2, expressed in volts, and

Input current is determined in accordance with section 3.3.3, expressed in amps.

[54 FR 6076, Feb. 7, 1989, as amended at 56 FR 18682, April 24, 1991]

Energy & Water Conservation Standards:

(m) Fluorescent lamp ballasts. (1) Except as provided in paragraph (m)(2) of this section, each fluorescent lamp ballast—

(i)(A) Manufactured on or after January 1, 1990;

(B) Sold by the manufacturer on or after April 1, 1990; or

(C) Incorporated into a luminarie by a luminarie manufacturer on or after April 1, 1991; and

(ii) Designed—

(A) To operate at nominal input voltages of 120 or 277 volts;

(B) To operate with an input current frequency of 60 Hertz; and

(C) For use in connection with F40T12, F96T12, or F96T12HO lamps; shall have a power factor of 0.90 or greater and shall have a ballast efficacy factor not less than the following:

------------------------------------------------------------------------ Total Ballast nominal Ballast Application for operation of input lamp efficacy voltage watts factor------------------------------------------------------------------------One F40T12 lamp........................... 120 40 1.805 277 40 1.805Two F40T12 lamps.......................... 120 80 1.060 277 80 1.050Two F9T12 lamps........................... 120 150 0.570 277 150 0.570Two F96T12HO lamps........................ 120 220 0.390 277 220 0.390------------------------------------------------------------------------

(2) The standards described in paragraph (m)(1) of this section do not apply to (i) a ballast which is designed for dimming or for use in ambient temperatures of 0 °F or less, or (ii) a ballast which has a power factor of less than 0.90 and is designed for use only in residential building applications.

(n) General service fluorescent lamps and incandescent reflector lamps. (1) Each of the following general service fluorescent lamps manufactured after the effective dates specified in the table shall meet or exceed the lamp efficacy and CRI standards shown in the table below:

Fluorescent Lamps---------------------------------------------------------------------------------------------------------------- Minimum average Lamp type Nominal lamp wattage Minimum lamp Effective date CRI efficacy (LPW)----------------------------------------------------------------------------------------------------------------4-foot medium bi-pin.................. gt;35W 69 75.0 Nov. 1, 1995. [le]35W 45 75.0 Nov. 1, 1995.2-foot U-shaped....................... gt;35W 69 68.0 Nov. 1, 1995. [le]35W 45 64.0 Nov. 1, 1995.8-foot slimline....................... gt;65W 69 80.0 May 1, 1994. [le]65W 45 80.0 May 1, 1994.8-foot high output.................... gt;100W 69 80.0 May 1, 1994. [le]100W 45 80.0 May 1, 1994.----------------------------------------------------------------------------------------------------------------

(2) Each of the following incandescent reflector lamps manufactured after November 1, 1995, shall meet or exceed the lamp efficacy standards shown in the table in this paragraph:

Incandescent Reflector Lamps------------------------------------------------------------------------ Minimum average Nominal lamp wattage lamp efficacy (LPW)------------------------------------------------------------------------40-50....................................................... 10.5

51-66....................................................... 11.067-85....................................................... 12.586-115...................................................... 14.0116-155..................................................... 14.5156-205..................................................... 15.0------------------------------------------------------------------------

For more information on test procedures please visit:http://a257.g.akamaitech.net/7/257/2422/14mar20010800/edocket.access.gpo.gov/cfr_2001/janqtr/pdf/10cfr430.22.pdf