BS EN IEC 60730-2-22:2020
$167.15
Automatic electrical controls – Particular requirements for thermal motor protectors
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 34 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 7 | English CONTENTS |
| 9 | FOREWORD |
| 12 | 1 Scope and normative references |
| 13 | 2 Definitions 3 General requirements 4 General notes on tests 5 Rating |
| 14 | 6 Classification |
| 15 | 7 Information 8 Protection against electric shock Tables Table 1 |
| 16 | 9 Provision for protective earthing 10 Terminals and terminations 11 Constructional requirements 12 Moisture and dust resistance |
| 17 | 13 Electric strength and insulation resistance 14 Heating 15 Manufacturing deviation and drift 16 Environmental stress 17 Endurance |
| 18 | Table 101 – Limited short-circuit capacity (applicable in Canada and the USA) |
| 19 | 18 Mechanical strength Figures Figure 101 – Limited short circuit test scheme |
| 20 | 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 |
| 21 | 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 |
| 22 | Annexes Annex E (normative) Circuit for measuring leakage current |
| 23 | Annex AA (informative) Endurance test for thermal motor protectors as components, i.e. not installed on a motor |
| 25 | Annex BB (informative) Testing of the combination of motor and thermal motor protectors (not applicable to sealed motor-compressors) |
| 26 | Table BB.101 – Additional required information and methods of providing information |
| 28 | Table BB.201 – Maximum allowable temperatures on running loads Table BB.202 – Maximum continuous running overload current permittedby thermal protector as percentage of nominal full load motor current |
| 29 | Table BB.203 – Maximum allowable temperatures for locked rotor conditions |
| 32 | Annex CC (informative) Additional information on the application of motor protectors in pollution degree 1, 2 and 3 Table CC.1 |
| 33 | Bibliography |
