• IEC 60034-2:1972

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Rotating electrical machines. Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles)

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  10-09-2007

    Language(s): 

    Published date:  01-01-1972

    Publisher:  International Electrotechnical Committee

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    Contents
    Foreword
    Preface
    Clause
    Section One - General
    1. Scope
    2. Object
    3. General
        3.1 List of symbols
    4. Definitions
        4.1 Efficiency
        4.2 Total loss
        4.3 Breaking test
        4.4 Calibrated driving machine test
        4.5 Mechanical back-to-back test
        4.6 Electrical back-to-back test
        4.7 Retardation test
        4.8 Calorimetric test
        4.9 No-load test
        4.10 Open-circuit test
        4.11 Sustained short-circuit test
        4.12 Zero power factor-test
    5. Reference temperature
    Section Two - D.C. Machines
    6. Losses to be included
        6.1 Excitation circuit losses
        6.2 Constant losses
        6.3 Load losses
        6,4 Additional load losses
    7. Determination of efficiency
        7.1 Summation of losses
        7.2 Total loss measurement
    Section Three - Polyphase Induction Machines
    8. Losses to be included
        8.1 Constant losses
        8.2 Load losses
        8.3 Additional load losses
    9. Determination of efficiency
        9.1 Summation of losses
        9.2 Total loss measurement
    Section Four - Synchronous Machines
    10. Losses to be included
        10.1 Constant losses
        10.2 Load losses
        10.3 Excitation circuit losses
        10.4 Additional load losses
    11. Determination of efficiency
        11.1 Summation of losses
        11.2 Total loss measurement
    Section Five - Methods of Test
    12. General
    13. Calibrated machine test
    14, Zero power factor test
    15. Retardation method
    16. Electrical back-to-back test
    17. Calorimetric test
    18. Schedule of preferred tests
        18.1 D.C. machines
        18.2 Polyphase induction machines
        18.3 Synchronous machines
    Figures
    Annex A - Provisional methods for determining losses and
              efficiency of converter-fed cage induction
              machines

    Abstract - (Show below) - (Hide below)

    Applies to d.c. machines and to a.c. synchronous and induction machines. The principles can be applied to other types of machines such as rotary converters, a.c. commutator motors and single-phase induction motors for which other methods of determining losses are used.

    General Product Information - (Show below) - (Hide below)

    Committee TC 2
    Development Note BS DRAFT 94/207030 DC REFERS TO AMD 1
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    09/30152273 DC : 0 BS IEC/TS 60034-20-2 - ROTATING ELECTRICAL MACHINES - PART 20-2: PERFORMANCE CHARACTERISTICS AND TESTING SPECIFICATIONS FOR BRUSHLESS PERMANENT MAGNET MOTORS
    CEI EN 60953-2 : 1996 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 2: METHOD B - WIDE RANGE OF ACCURACY FOR VARIOUS TYPES AND SIZES OF TURBINES
    DIN EN ISO 5802:2016-02 INDUSTRIAL FANS - PERFORMANCE TESTING IN SITU (ISO 5802:2001 + AMD 1:2015)
    02/206929 DC : DRAFT JUN 2002 IEC 60034-25. ED.1 - ROTATING ELECTRICAL MACHINES - PART 25: GUIDE FOR THE DESIGN AND PERFORMANCE OF CAGE INDUCTION MOTORS FOR CONVERTER SUPPLY
    NF EN 61116 : 2003 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    IEC 60349:1991 Electric traction. Rotating electrical machines for rail and road vehicles
    CEI EN 60027-4 : 2008 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 4: ROTATING ELECTRICAL MACHINES
    HI 14.6 : 2016 ROTODYNAMIC PUMPS FOR HYDRAULIC PERFORMANCE ACCEPTANCE TESTS
    09/30182105 DC : 0 BS EN 60349-2 - ELECTRICAL TRACTION - ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES - PART 2: ELECTRONIC CONVERTER-FED ALTERNATING CURRENT MOTORS
    BS EN 60953-2 : 1996 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 2: WIDE RANGE OF ACCURACY FOR VARIOUS TYPES AND SIZES OF TURBINES
    NBR 10840 : 1989 MAQUINAS ELETRICAS GIRANTES - TURBOMAQUINAS SINCRONAS
    BS 5000-2(1992) : 1992 AMD 9035 SPECIFICATION FOR ROTATING ELECTRICAL MACHINES OF PARTICULAR TYPES OR FOR PARTICULAR APPLICATIONS - SPECIFIC REQUIREMENTS FOR TURBINE-TYPE SYNCHRONOUS MACHINES
    BS ISO 21927-3 : 2006 SMOKE AND HEAT CONTROL SYSTEMS - PART 3: SPECIFICATION FOR POWERED SMOKE AND HEAT EXHAUST VENTILATORS
    15/30314544 DC : 0 BS EN 61800-9-1 - ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 9-1: ENERGY EFFICIENCY OF POWER DRIVE SYSTEMS, MOTOR STARTERS, POWER ELECTRONICS AND THEIR DRIVEN APPLICATIONS - GENERAL REQUIREMENTS FOR SETTING ENERGY EFFICIENCY STANDARDS FOR POWER DRIVEN EQUIPMENT USING THE EXTENDED PRODUCT APPROACH (EPA) AND SEMI ANALYTIC MODEL (SAM)
    01/202922 DC : DRAFT APR 2001 IEC 60034-23 ED.1 - ROTATING ELECTRICAL MACHINES - PART 23: SPECIFICATION FOR THE REFURBISHING OF ROTATING ELECTRICAL MACHINES
    05/30138880 DC : DRAFT SEP 2005 IEC 61986 ED 2 - ROTATING ELECTRICAL EQUIPMENT - EQUIVALENT LOADING AND SUPER-POSITIONING TECHNIQUES - INDIRECT TESTING TO DETERMINE TEMPERATURE RISE
    BS EN 61986 : 2002 ROTATING ELECTRICAL MACHINES - EQUIVALENT LOADING AND SUPER-POSITION TECHNIQUES - INDIRECT TESTING TO DETERMINE TEMPERATURE RISE
    BS 848-1(2007) : 2007 COR 2010 INDUSTRIAL FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS
    BS ISO 8528-6:2005 (published 2006-02) Reciprocating internal combustion engine driven alternating current generating sets Test methods
    BS 848-3(2001) : 2001 FANS FOR GENERAL PURPOSE - PART 3: PERFORMANCE TESTING IN SITU
    03/316175 DC : DRAFT SEP 2003 ISO 8528-6 - RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 6: TEST METHODS
    NBR 11374 : 1990
    BS 848-1(1997) : 1997 FANS FOR GENERAL PURPOSES - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS
    07/30161347 DC : 0 BS EN 60034-30 - ROTATING ELECTRICAL MACHINES - PART 30: EFFICIENCY CLASSES OF SINGLE-SPEED THREE-PHASE CAGE INDUCTION MOTORS
    BIS IS/ISO 8528-6 : 2005(R2014) RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 6: TEST METHODS
    NF EN ISO 5801 : 2017 FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS
    BS ISO 21630 : 2007 PUMPS - TESTING - SUBMERSIBLE MIXERS FOR WASTEWATER AND SIMILAR APPLICATIONS
    BS EN 61800-4 : 2003 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 4: GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR A.C. POWER DRIVE SYSTEMS ABOVE 1000 V A.C. AND NOT EXCEEDING 35 KV
    DIN 4341-1:1979-08 GAS TURBINES - ACCEPTANCE TESTS
    DIN ISO 8528-6:1997-11 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 6: TEST METHODS
    GOST R ISO 8528-6 : 2005 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 6: TEST METHODS
    UNI CEI EN 45510-2-5 : 2011 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-5: ELECTRICAL EQUIPMENT - MOTORS
    ISO 21927-3:2006 Smoke and heat control systems Part 3: Specification for powered smoke and heat exhaust ventilators
    DIN V ENV 60349-2 : 1994 ELECTRIC TRACTION - ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES - PART 2: ELECTRONIC CONVERTER-FED ALTERNATING CURRENT MOTORS
    I.S. EN 61116:1995 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    CEI UNI EN 45510-2-5 : 2006 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-5: ELECTRICAL EQUIPMENT - MOTORS
    13/30280184 DC : 0 BS EN 50598-1 - ECODESIGN FOR POWER DRIVE SYSTEMS, MOTOR STARTERS, POWER ELECTRONICS & THEIR DRIVEN APPLICATIONS - PART 1: GENERAL REQUIREMENTS FOR SETTING ENERGY EFFICIENCY STANDARDS FOR POWER DRIVEN EQUIPMENT USING THE EXTENDED PRODUCT APPROACH (EPA), AND SEMI ANALYTIC MODEL (SAM)
    05/30113382 DC : DRAFT AUG 2005 BS ISO 21630 - PUMPS - TESTING - SUBMERSIBLE MIXERS FOR WASTEWATER AND SIMILAR APPLICATIONS
    DD CLC/TS 60034-25 : 2008 ROTATING ELECTRICAL MACHINES - PART 25: GUIDANCE FOR THE DESIGN AND PERFORMANCE OF A.C. MOTORS SPECIFICALLY DESIGNED FOR CONVERTER SUPPLY
    BS EN 60953-1 : 1996 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 1: HIGH ACCURACY FOR LARGE CONDENSING STEAM TURBINES
    UNE-EN 60027-4:2011 Letter symbols to be used in electrical technology -- Part 4: Rotating electric machines
    08/30182672 DC : DRAFT MAY 2008 BS EN 60034-1 - ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE
    BS EN 60027-4 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRIC TECHNOLOGY - PART 4: ROTATING ELECTRIC MACHINES
    NF ISO 5801 : 2008 INDUSTRIAL FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS
    CEI EN 60953-1 : 1996 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 1: METHOD A - HIGH ACCURACY FOR LARGE CONDENSING STEAM TURBINES
    UNE-EN 60034-1:2011 Rotating electrical machines - Part 1: Rating and performance
    BS EN 45510-2-5 : 2002 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-5: ELECTRICAL EQUIPMENT - MOTORS
    07/30065083 DC : DRAFT JUNE 2007 BS EN 60027-4 - LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 4: ROTATING ELECTRIC MACHINES
    06/30152649 DC : DRAFT JULY 2006 BS IEC 60034-4 - ROTATING ELECTRICAL MACHINES - PART 4: METHODS FOR DETERMINING SYNCHRONOUS MACHINE QUANTITIES FROM TESTS
    98/201424 DC : DRAFT MARCH 1998 IEC 61972 - METHOD FOR DETERMINING LOSSES AND EFFICIENCY OF THREE-PHASE, CAGE INDUCTION MOTORS
    BS 848-10(1999) : 1999 FANS FOR GENERAL PURPOSES - PART 10: PERFORMANCE TESTING OF JET FANS
    S.R. CLC/TS 60034-25:2008 ROTATING ELECTRICAL MACHINES - PART 25: GUIDANCE FOR THE DESIGN AND PERFORMANCE OF A.C. MOTORS SPECIFICALLY DESIGNED FOR CONVERTER SUPPLY
    CEI EN 61116 : 1996 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    PREN 50598-1 : DRAFT 2013 ECODESIGN FOR POWER DRIVE SYSTEMS, MOTOR STARTERS, POWER ELECTRONICS & THEIR DRIVEN APPLICATIONS - PART 1: GENERAL REQUIREMENTS FOR SETTING ENERGY EFFICIENCY STANDARDS FOR POWER DRIVEN EQUIPMENT USING THE EXTENDED PRODUCT APPROACH (EPA), AND SEMI ANALYTIC MODEL (SAM)
    ISO 21630:2007 Pumps Testing Submersible mixers for wastewater and similar applications
    API 546 : 2008 BRUSHLESS SYNCHRONOUS MACHINES - 500 KVA AND LARGER
    BS 173-1(1992) : 1992 ELECTRIC TRACTION (RAIL AND ROAD VEHICLES) - SPECIFICATION FOR ROTATING ELECTRICAL MACHINES
    NBR 5117 : 2007 ROTATING ELECTRICAL MACHINES - SYNCHRONOUS MACHINES - SPECIFICATION
    I.S. EN 60953-2:1999 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 2: METHOD B - WIDE RANGE OF ACCURACY FOR VARIOUS TYPES AND SIZES OF TURBINES
    CSA C61400-2 : 2008 : R2018 WIND TURBINES - PART 2: DESIGN REQUIREMENTS FOR SMALL WIND TURBINES
    CSA C61400-2 : 2008 : R2013 WIND TURBINES - PART 2: DESIGN REQUIREMENTS FOR SMALL WIND TURBINES
    BS EN ISO 5802 : 2008 INDUSTRIAL FANS - PERFORMANCE TESTING IN SITU
    I.S. CLC TS 60034-25:2005 ROTATING ELECTRICAL MACHINES - PART 25: GUIDE FOR THE DESIGN AND PERFORMANCE OF CAGE INDUCTION MOTORS SPECIFICALLY DESIGNED FOR CONVERTER SUPPLY
    I.S. EN 60953-1:1998 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 1: METHOD A - HIGH ACCURACY FOR LARGE CONDENSING STEAM TURBINES
    ISO 8528-6:2005 Reciprocating internal combustion engine driven alternating current generating sets Part 6: Test methods
    CEI UNI EN 45510-2-6 : 2000 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-6: ELECTRICAL EQUIPMENT - GENERATORS
    CSA C61400-2:2008 WIND TURBINES - PART 2: DESIGN REQUIREMENTS FOR SMALL WIND TURBINES
    EN 60953-2 : 1995 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 2: METHOD B - WIDE RANGE OF ACCURACY FOR VARIOUS TYPES AND SIZES OF TURBINES
    NBR ISO 8528-6 : 2014 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 6: TEST METHODS
    NF EN 60953-1 : 2002 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 1: METHOD A - HIGH ACCURACY FOR LARGE CONDENSING STEAM TURBINES
    NF EN 61986 : 2004 ROTATING ELECTRICAL MACHINES - EQUIVALENT LOADING AND SUPER-POSITION TECHNIQUES - INDIRECT TESTING TO DETERMINE TEMPERATURE RISE
    NF EN 60034-1 : 2011 ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE
    CEI EN 61800-4 : 2003 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 4: GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR A/C/ POWER DRIVE SYSTEMS ABOVE 1000 V A.C. AND NOT EXCEEDING 35 KV
    CEI EN 60041 : 1997 FIELD ACCEPTANCE TESTS TO DETERMINE THE HYDRAULIC PERFORMANCE OF HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES
    UNE-EN ISO 5801:2010 Industrial fans - Performance testing using standardized airways (ISO 5801:2007 including Cor 1:2008)
    BS 4999-104(1988) : 1988 AMD 8875 GENERAL REQUIREMENTS FOR ROTATING ELECTRICAL MACHINES - METHODS OF TEST FOR DETERMINATING SYNCHRONOUS MACHINE QUANTITIES
    BS ISO 5801 : 2007 INDUSTRIAL FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS
    BIS IS/IEC 60034-1 : 2004 AMD 1 2015 ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE
    EN 13053:2006+A1:2011 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS
    I.S. EN ISO 5802:2008 INDUSTRIAL FANS - PERFORMANCE TESTING IN SITU (ISO 5802:2001)
    I.S. EN 61800-4:2003 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 4: GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR A.C. POWER DRIVE SYSTEMS ABOVE 1000 V A.C. AND NOT EXCEEDING 35 KV
    IEC 61972:2002 Method for determining losses and efficiency of three-phase cage induction motors
    I.S. EN 60027-4:2007 LETTER SYMBOLS TO BE USED IN ELECTRIC TECHNOLOGY - PART 4: ROTATING ELECTRIC MACHINES
    IEC TS 60034-23:2003 ROTATING ELECTRICAL MACHINES - PART 23: SPECIFICATION FOR THE REFURBISHING OF ROTATING ELECTRICAL MACHINES
    I.S. EN 13053:2006 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS
    DIN ISO 8528-7:1997-11 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 7: TECHNICAL DECLARATIONS FOR SPECIFICATION AND DESIGN
    IEC 61116:1992 Electromechanical equipment guide for small hydroelectric installations
    ISO 5802:2001 Industrial fans Performance testing in situ
    BS EN 61800-1 : 1998 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 1: RATING SPECIFICATIONS FOR LOW VOLTAGE ADJUSTABLE SPEED D.C. POWER DRIVE SYSTEMS
    ISO 5198:1987 Centrifugal, mixed flow and axial pumps Code for hydraulic performance tests Precision grade
    IEC 61986 : 1.0 ROTATING ELECTRICAL MACHINES - EQUIVALENT LOADING AND SUPER-POSITION TECHNIQUES - INDIRECT TESTING TO DETERMINE TEMPERATURE RISE
    BS EN ISO 5198 : 1999 CENTRIFUGAL, MIXED FLOW AND AXIAL PUMPS - CODE FOR HYDRAULIC PERFORMANCE TESTS - PRECISION CLASS
    UNI EN 13053 : 2011 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS
    IEC 60027-4:2006 Letter symbols to be used in electrical technology - Part 4: Rotating electric machines
    IEC 61800-1:1997 Adjustable speed electrical power drive systems - Part 1: General requirments - Rating specifications for low voltage adjustables speed d.c. power drive systems
    BS EN 13053 : 2006 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS
    IEC 61800-4:2002 Adjustable speed electrical power drive systems - Part 4: General requirements - Rating specifications for a.c. power drive systems above 1 000 V a.c. and not exceeding 35 kV
    EN 61800-1 : 1998 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR LOW VOLTAGE ADJUSTABLE SPEED D.C. POWER DRIVE SYSTEMS
    DIN EN 13053:2012-02 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS (INCLUDES AMENDMENT A1:2011)
    DIN EN 61800-1 : 1999-08 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 1: GENERAL REQUIREMENTS; RATING SPECIFICATIONS FOR LOW VOLTAGE ADJUSTABLE SPEED D.C. POWER DRIVE SYSTEMS
    VDE 0160-101 : 1999-08 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR LOW VOLTAGE ADJUSTABLE SPEED D.C. POWER DRIVE SYSTEMS
    CEI EN 61800-1 : 2000 ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 1: GENERAL REQUIREMENTS - RATING SPECIFICATIONS FOR LOW VOLTAGE ADJUSTABLE SPEED D.C. POWER DRIVE SYSTEMS
    EN 60953-1 : 1995 RULES FOR STEAM TURBINE THERMAL ACCEPTANCE TESTS - PART 1: METHOD A - HIGH ACCURACY FOR LARGE CONDENSING STEAM TURBINES
    EN 61800-4 : 2003 Adjustable speed electrical power drive systems - Part 4: General requirements - Rating specifications for a.c. power drive systems above 1 000 V a.c. and not exceeding 35 kV
    EN 61986 : 2002 ROTATING ELECTRICAL MACHINES - EQUIVALENT LOADING AND SUPER-POSITION TECHNIQUES - INDIRECT TESTING TO DETERMINE TEMPERATURE RISE
    CLC/TS 60034-25 : 2008 ROTATING ELECTRICAL MACHINES - PART 25: GUIDANCE FOR THE DESIGN AND PERFORMANCE OF A.C. MOTORS SPECIFICALLY DESIGNED FOR CONVERTER SUPPLY
    EN 61116 : 1994 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    EN 60027-4 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRIC TECHNOLOGY - PART 4: ROTATING ELECTRIC MACHINES
    EN ISO 5198:1998 CENTRIFUGAL, MIXED FLOW AND AXIAL PUMPS - CODE FOR HYDRAULIC PERFORMANCE TESTS - PRECISION CLASS
    EN ISO 5802:2008/A1:2015 INDUSTRIAL FANS - PERFORMANCE TESTING IN SITU (ISO 5802:2001/AMD 1:2015)
    EN 45510-2-5 : 2002 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-5: ELECTRICAL EQUIPMENT - MOTORS
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective