IEC 60730-2-22:2014

FOREWORD
1 Scope and normative references
2 Definitions
3 General requirements
4 General notes on tests
5 Rating
6 Classification
7 Information
8 Protection against electric shock
9 Provision for protective earthing
10 Terminals and terminations
11 Constructional requirements
12 Moisture and dust resistance
13 Electric strength and insulation resistance
14 Heating
15 Manufacturing deviation and drift
16 Environmental stress
17 Endurance
18 Mechanical strength
19 Threaded parts and connections
20 Creepage distances, clearances and
   distances through solid insulation
21 Resistance to heat, fire and tracking
22 Resistance to corrosion
23 Electromagnetic compatibility (EMC)
   requirements - emission
24 Components
25 Normal operation
26 Electromagnetic compatibility (EMC)
   requirements - immunity
27 Abnormal operation
28 Guidance on the use of electronic disconnection
Annexes
Annex E (normative) - Circuit for measuring leakage
        current
Annex AA (informative) - Endurance test for thermal
         motor protectors as components, i.e. not
         installed on a motor
Annex BB (informative) - Testing of the combination of
         motor and thermal motor protectors (not
         applicable to sealed motor-compressors)
Annex CC (informative) - Additional information on the
         application of motor protectors in pollution
         degree 1, 2 and 3
Bibliography

IEC 60730-2-22:2014 applies to the partial evaluation of thermal motor protectors as defined in IEC 60730-1 for household and similar use, including heating, air conditioning and similar applications as well as for sealed (hermetic and semi-hermetic type) motor-compressors. A thermal motor protector is considered an integrated control since its protective functionality is dependent on the correct mounting and fixing in or on a motor and which can only be fully tested in combination with the relevant motor. This dependency is illustrated by:
- the ability of the thermal motor protector to accurately and reliably sense the heat of the motor windings;
- thus, addressing the over-temperature protection due to motor overload conditions;
- the ability of the thermal motor protector to accurately and reliably sense the current due to motor locked-rotor conditions;
- thus, reducing the response time and not being adversely affected by heat-sink at the assembly spot in the application and the influence of the motor's electromagnetic field on the switch behaviour of the thermal motor protector;
- particularly, affecting the arc direction between the contacts resulting in uneven wear of the contact material and eventually leading to failure of operation. Requirements concerning the testing of the combination of sealed (hermetic and semi-hermetic type) motor-compressors and thermal motor protectors are given in IEC 60335-2-34. This standard applies to thermal motor protectors using NTC or PTC thermistors, additional requirements for which are contained in Annex J. Key words: Thermal, Motor protectors, Integrated control

This publication is to be read in conjunction with IEC 60730-1:2010.