UL 60335-2-34
Household and Similar Electrical Appliances - Safety - Part 2-34: Particular Requirements for Motor-Compressors

Edition Number:6SCC Approved:--
Edition Date:2017-11-03DOD Approved: --
Price Code:HANSI Approved: 2017-11-03


    1 Scope

    This clause of Part 1 is replaced by the following.

    This International Standard deals with the safety of sealed (hermetic and semi-hermetic type) MOTOR-COMPRESSORS, their protection and control systems, if any, which are intended for use in equipment for household and similar purposes and which conform with the standards applicable to such equipment. It applies to MOTOR-COMPRESSORS tested separately, under the most severe conditions that may be expected to occur in normal use, their rated voltage being not more than 250 V for single-phase MOTOR-COMPRESSORS and 600 V for other MOTOR-COMPRESSORS.

    1DV.1 Modification to replace the second sentence of the second paragraph in Clause 1 with the following:

    It applies to motor-compressors tested separately, under the most severe conditions that can be expected to occur in normal use, their rated voltage being not more than 300 V for single-phase motor-compressors and 600 V for other motor-compressors intended for use in accordance with:

    –  CSA C22.1,  Canadian Electrical Code (CE Code) Part I, in Canada;

    –  NFPA 70,  National Electrical Code (NEC), in the United States.

    1DV.2 Modification by adding the following to Clause 1 of the Part 2:

    For MOTOR-COMPRESSORS rated greater than 600 V, see the requirements of Annex 101.dvi.

    This standard also covers

    – multi-speed MOTOR-COMPRESSORS, that are MOTOR-COMPRESSORS, the speed of which can be set to different values;

    – variable capacity MOTOR-COMPRESSORS, that are MOTOR-COMPRESSORS where the capacity of the compressor is controlled at fixed speeds.

    NOTE 101 Examples of equipment which contain MOTOR-COMPRESSORS are

    – refrigerators, food freezers and ice makers ( IEC 60335-2-24);

    – air-conditioners, electric heat pumps and dehumidifiers ( IEC 60335-2-40);

    – commercial dispensing appliances and vending machines ( IEC 60335-2-75);

    – factory-built assemblies for transferring heat in applications for refrigerating, air-conditioning or heating purposes or a combination of such purposes.

    This standard does not supersede the requirements of standards relevant to the particular appliance in which the MOTOR-COMPRESSORS is used. However, if the MOTOR-COMPRESSORS type used complies with this standard, the tests for the MOTOR-COMPRESSORS specified in the particular appliance standard may not need to be made in the particular appliance or assembly. If the MOTOR-COMPRESSORS CONTROL SYSTEM is associated with the particular appliance control system, additional tests may be necessary on the final appliance.

    So far as is practical, this standard deals with the common hazards presented by MOTOR-COMPRESSORS used in appliances which are encountered by all persons in and around the home. However, it does not in general take into account

    – the use of appliances by young children or infirm persons without supervision;

    – playing with the appliances by young children.

    NOTE 102 Attention is drawn to the fact that

    – for MOTOR-COMPRESSORS intended to be used in appliances in vehicles or on board ships, additional requirements may be necessary;

    – in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.

    NOTE 103 This standard does not apply to

    – MOTOR-COMPRESSORS designed exclusively for industrial purposes;

    – motor-compressors used in appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

    NOTE 104 If MOTOR-COMPRESSORS for refrigerant R-744 used in appliances with a TRANSCRITICAL REFRIGERATION SYSTEM are equipped with PRESSURE RELIEF DEVICES, compliance with the requirements for these devices is checked during the tests on the final appliance.

    Expand All

    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
    • Deviations
    • IEC Foreword
    • Introduction
      • HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY – Part 2-34: Particular requirements for motor-compressors
        • 1 Scope
        • 2 Normative references
        • 3 Terms and definitions
        • 4 General requirement
        • 5 General conditions for the tests
        • 6 Classification
        • 7 Marking and instructions
        • 8 Protection against access to live parts
        • 9 Starting of motor-operated appliances
        • 10 Power input and current
        • 11 Heating
        • 12 Void
        • 13 Leakage current and electric strength at operating temperature
        • 14 Transient overvoltages
        • 15 Moisture resistance
        • 16 Leakage current and electric strength
        • 17 Overload protection of transformers and associated circuits
        • 18 Endurance
        • 19 Abnormal operation
        • 20 Stability and mechanical hazards
        • 21 Mechanical strength
        • 22 Construction
        • 23 Internal wiring
        • 24 Components
        • 25 Supply connection and external flexible cords
        • 26 Terminals for external conductors
        • 27 Provision for earthing
        • 28 Screws and connections
        • 29 Clearances, creepage distances and solid insulation
        • 30 Resistance to heat and fire
        • 31 Resistance to rusting
        • 32 Radiation, toxicity and similar hazards
    • Annexes
    • Annex C(normative)Ageing test on motors
    • Annex D(normative)Thermal motor protectors
    • Annex AA(normative)Running overload tests for motor-compressors classified as tested with Annex
    • Annex BB (normative) Winding wire insulation compatibility tests
    • Annex CC (normative) Tie cords and insulation compatibility tests
    • Annex DD (normative) Non-sparking “n” electrical apparatus
    • Annex DVA(normative) North American additional requirements
    • Annex 101.DVA(normative) Accelerated Aging Tests – Gaskets
    • Annex 101.DVB (informative) Pressure code
    • Annex 101.DVC(normative) Nonmetallic materials
    • Annex 101.DVD(normative)Bypass valve testing
    • Annex 101.DVE(informative)Supplemental requirements
    • Annex 101.DVF(informative)Optional fatigue test
    • Annex 101.DVG(informative)Optional pressure tests
    • Annex 101.DVH(informative)Maximum continuous current test
    • Annex 101.DVI(normative)Requirements for motor-compressors rated over 600 volts to 15 000 volts
    • Annex 101.DVJ(normative)Hydrostatic strength testing of internal motor protective devices
    • Annex 101.DVK(informative)Optional winding wire insulation compatibility tests for motorettes/coilettes
    • Bibliography