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IEC 60335-2-34
Edition 6.0 2021-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-34: Particular requirements for motor-compressors
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IEC 60335-2-34
Edition 6.0 2021-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-34: Particular requirements for motor-compressors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.040.30 ISBN 978-2-8322-9573-1
– 2 – IEC 60335-2-34:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 10
4 General requirement . 10
5 General conditions for the tests . 14
6 Classification . 15
7 Marking and instructions . 16
8 Protection against access to live parts . 17
9 Starting of motor-operated appliances . 17
10 Power input and current . 17
11 Heating . 17
12 Void . 17
13 Leakage current and electric strength at operating temperature . 17
14 Transient overvoltages . 18
15 Moisture resistance . 18
16 Leakage current and electric strength . 18
17 Overload protection of transformers and associated circuits . 18
18 Endurance . 18
19 Abnormal operation . 18
20 Stability and mechanical hazards . 23
21 Mechanical strength . 23
22 Construction . 24
23 Internal wiring . 29
24 Components . 29
25 Supply connection and external flexible cords . 30
26 Terminals for external conductors . 30
27 Provision for earthing . 30
28 Screws and connections . 30
29 Clearances, creepage distances and solid insulation . 30
30 Resistance to heat and fire . 31
31 Resistance to rusting . 32
32 Radiation, toxicity and similar hazards . 32
Annexes . 33
Annex C (normative) Ageing test on motors . 33
Annex D (normative) Thermal motor protectors . 33
Annex AA (normative) Running overload tests for motor-compressors classified as
tested with Annex AA . 34
Annex BB (normative) Winding wire insulation compatibility tests . 47
Annex CC (normative) Tie cords and insulation compatibility tests . 52
Annex DD (normative) Non-sparking “n” electrical apparatus and test condition for “dc”
devices . 55
Annex EE (normative) Fatigue test . 57
Bibliography . 59
Figure 101 – Supply circuit for the locked-rotor test of a single-phase motor-
compressor . 32
Figure AA.1 – Substitute refrigeration circuit . 46
Figure BB.1 – Motorette components . 50
Figure BB.2 – Completely assembled motorette . 51
Table 101 – Minimum high side test pressures . 25
Table 102 – Minimum low side test pressures . 27
Table AA.1 – Substitute refrigeration circuit conditions for operating under running
overload conditions .
Table AA.2 – Substitute refrigeration circuit conditions for operating under maximum
load conditions .
Table AA.3 – Steps for increasing the load on the motor-compressor .
Table AA.1 – Substitute refrigeration circuit conditions for operation under
maximum load . 44
Table AA.2 – Steps for increasing the load on the motor-compressor . 45
Table BB.1 – Time temperature heating cycles . 48
Table CC.1 – Time temperature heating cycles . 53
– 4 – IEC 60335-2-34:2021 RLV © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-34: Particular requirements for motor-compressors
FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 60335-2-34:2012+AMD1:2015+AMD2:2016 CSV. A vertical bar appears
in the margin wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
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