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BS EN IEC 60730-2-7:2020

BS EN IEC 60730-2-7:2020

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Automatic electrical controls – Particular requirements for timers and time switches

Published By Publication Date Number of Pages
BSI 2020 30
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This clause of Part 1 is applicable except as follows:

1.1 Replacement:

In general, this part of IEC 60730 applies to timers and time switches that may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air conditioning and similar applications.

This standard is also applicable to individual timers utilized as part of a control system or timers which are mechanically integral with multifunctional controls having non-electrical outputs. This standard does not apply to time-delay switches (TDS) within the scope of IEC 60669-2-3.

NOTE 1 Throughout this standard, the word “timers” means timers and time switches, unless the type is specifically mentioned.

NOTE 2 Devices which only indicate time or passage of time are not included.

NOTE 3 This standard does not apply to multi-functional controls having an integrated timing function which is not capable of being tested as a separate timing device.

1.1.1 Replacement:

This standard applies to the inherent safety, to the operating characteristics where such are associated with equipment protection and to the testing of timers used in appliances and other apparatus, electrical and non-electrical, for household and similar purposes, but also extended to industrial purposes when no dedicated product standards exist, such as that for central heating, air conditioning, process heating, etc.

Timers for equipment not intended for normal household use, but which nevertheless may be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.

This standard is also applicable to timers for appliances within the scope of IEC 60335-1.

1.1.2 Replacement:

This standard applies to manual controls when such are electrically and/or mechanically integral with timers.

1.4 Replacement:

This standard applies also to timers incorporating electronic devices, requirements for which are contained in Annex H.

This standard applies also to timers using NTC or PTC thermistors, requirements for which are contained in Part 1, Annex J.

1.5 Normative references

This subclause of Part 1 applies except as follows:

Addition:

IEC 60669-1:1998, Switches for household and similar fixed-electrical installations – Part 1: General requirements1

IEC 60669-1:1998/AMD1:1999

IEC 60669-1:1998/AMD2:2006

IEC 60695-11-10:2013, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and vertical flame test methods

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 CONTENTS
8 FOREWORD
11 1 Scope and normative references
12 2 Definitions
13 3 General requirements
4 General notes on tests
5 Rating
6 Classification
14 7 Information
15 8 Protection against electric shock
9 Provision for protective earthing
10 Terminals and terminations
11 Constructional requirements
16 12 Moisture and dust resistance
13 Electric strength and insulation resistance
14 Heating
15 Manufacturing deviation and drift
17 16 Environmental stress
17 Endurance
18 Tables
Table 14 – Electrical conditions for the overvoltage test
Table 15 – Electrical conditions for the overload tests of 17.7 and 17.10
Table 16 – Electrical conditions for the overload tests of 17.8, 17.9, 17.11, 17.12 and 17.13
21 Table 101 – Electrical conditions for overload and endurance testing
22 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
23 24 Components
25 Normal operation
26 Electromagnetic compatibility (EMC) requirements – immunity
27 Abnormal operation
28 Guidance on the use of electronic disconnection
24 Annex H (normative) Requirements for electronic controls
28 Annex AA (normative) Number of cycles, automatic and manual action
Table AA.1 – Values for free standing, independently mounted and in-line cord timers and time switches a
29 Bibliography

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BS EN IEC 60730-2-7:2020
$142.49