Foreword
Committees responsible
Specification
1 Scope
2 Definitions
3 General requirements
4 General notes on tests
5 Rating
6 Classification
7 Marking
8 Protection against electric shock
9 Starting of motor-operated appliances
10 Input and current
11 Heating
12 Operation under overload conditions of appliances
with heating elements
13 Electrical insulation and leakage current at
operating temperature
14 Radio and television interference suppression
15 Moisture resistance
16 Insulation resistance and electric strength
17 Overload protection
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 cables and
cords
26 Terminals for external conductors
27 Provision for earthing
28 Screws and connections
29 Creepage distances, clearances and distances
through insulation
30 Resistance to heat, fire and tracking
31 Resistance to rusting
32 Radiation, toxicity and similar hazards
Tables
1 Substitute refrigeration circuit conditions for
operating under running overload conditions
2 Untitled
Figures
101 Test set-up - substitute cooling system
102 Supply circuit for locked-rotor test of a motor-
compressor of the single-phase type
102A Supply circuit for locked-rotor test of a motor-
compressor of the single-phase type
Appendices
A Thermal controls and overload releases
B Electronic circuits
C Construction of safety isolating transformers
D Alternative requirements for protected motor units
E Measurement of creepage distances and clearances
X Original text of IEC Publication IEC 335-2-34;
first edition, 1980, prior to modification by
HD 277 S1, together with the justification for the
modifiation given in the HD
Y National deviations that could not be removed from
the CENELEC Harmonization Document