singapore standard specification for 13 a plugs and socket
TRANSCRIPT
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SS 145 : Part 2 : 2018 BS 1363-2:2016+A1:2018, MOD
(ICS 29.120.30)
SINGAPORE STANDARD
Specification for 13 A plugs and socket-outlets
– Part 2 : 13 A switched and unswitched socket-outlets
SS 145 : Part 2 : 2018 BS 1363-2:2016+A1:2018, MOD (ICS 29.120.30)
SINGAPORE STANDARD
Specification for 13 A plugs and socket-outlets
– Part 2 : 13 A switched and unswitched socket-outlets
All rights reserved. Unless otherwise specified, no part of this Singapore Standard may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilming, without permission in writing from Enterprise Singapore. Request for permission can be sent to: [email protected].
ISBN 978-981-48-3518-3
SS 145 : Part 2 : 2018
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This Singapore Standard was approved by the Electrical and Electronic Standards Committee on behalf of the Singapore Standards Council on 5 October 2018. First published, 1976 First revision, 1985 Second revision, 1997 Third revision, 2010 Fourth revision, 2018 The Electrical and Electronic Standards Committee appointed by the Standards Council consists of the following members: Name Capacity
Chairman : Er. Peter Leong Weng Kwai Individual Capacity Deputy Chairmen : Mr Andrew Chow Individual Capacity Dr Kang Cheng Guan Energy Market Authority Advisor : Mr Renny Yeo Ah Kiang Individual Capacity
Secretary : Mr Jason Low Enterprise Singapore
Members : Dr Ashwin Khambadkone National University of Singapore
Dr Chua Sze Wey Agency for Science, Technology and Research Mr Michael Goh Chye Soon Singapore Electrical Contractors and Licensed
Electrical Workers Association Assoc Prof Gooi Hoay Beng Nanyang Technological University Er. Hashim Bin Mansoor Building and Construction Authority Mr Koh Liang Hock SP Group Er. Kwang Cheok Sen Housing & Development Board Er. Lim Say Leong Individual Capacity Er. Ling Shiang Yun Association of Consulting Engineers Singapore Er. Kenneth Liu Individual Capacity Mr Ng Soon Lee TUV SUD PSB Pte Ltd
Mr Sim Wee Meng Land Transport Authority Mr Tan Beng Koon Singapore Manufacturing Federation SAC Christopher Tan Eng
Kiong Singapore Civil Defence Force
Er. Tan Hak Khoon Individual Capacity Mr Roland Tan National Environment Agency Er. Joseph Toh Siaw Hui The Institution of Engineers, Singapore Mr Andrew Yap Enterprise Singapore Mr Nelson Yeap Singapore Electrical Trades Association
SS 145 : Part 2 : 2018
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The Technical Committee on Electrical and Electronic Products appointed by the Electrical and Electronic Standards Committee and responsible for the preparation of this standard consists of representatives from the following organisations: Name Capacity
Chairman : Er. Lim Say Leong Individual Capacity Deputy Chairman : Mr Andrew Yap Enterprise Singapore
Secretary : Mr Jason Low Enterprise Singapore
Members : Er. Thomas Cheang Association of Consulting Engineers Singapore Er. Chia Soo Ping Singapore Polytechnic Er. Choong Po Siong Housing & Development Board Mr Steven Ho JTC Corporation Er. Ken Jung Gee Keong
(till 15 August 2018) Singapore Electrical Contractors and Licensed
Electric Workers Association Dr Lai Weng Hong Singapore Semiconductor Industry Association Mr Sunny Lee Chwee Thiam Maritime and Port Authority of Singapore
Mr Eric Lim Singapore Electrical Trades Association Mr Francis Lim Land Transport Authority Mr Seow Swee Lee PSA Corporation Limited Dr Shan Yueyan Agency for Science, Technology and Research A/Prof So Ping Lam Nanyang Technological University Mr Tan Boon Chong Singapore Manufacturing Federation Ms Tan Lay Hua SP Group CPT Tan Ping Hao Singapore Civil Defence Force Dr Teo Tee Hui The Institution of Engineers, Singapore
The Working Group appointed by the Technical Committee to assist in the preparation of this standard comprises of the following experts who contribute in their individual capacity: Name
Convenor : Mr Tan Boon Chong
Secretary : Aruna Charukesi Palaninathan
Members : Mr Andrew Chua Kian Chong Mr Goh Sheng Sze Mr Vincent Loo Mr Daniel Ng Mr Ong Ah Keong Mr Phua Kim Suah Mr Kenneth Seow Mr James Tan Mr Ting Chiong Seng Mr Wong Chee Kian Er. Yeo Kok Beng Mr Sebastian Yeo
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The organisation in which the experts of the Working Group are involved are: ABB Pte Ltd Ace Approvals Consultancy Energy Market Authority Enterprise Singapore Hager Electro Systems Pte Ltd Housing & Development Board Intertek Testing Services (S) Pte Ltd Land Transport Authority MK Electric (S) Pte Ltd SP Group Singapore Electrical Testing Services Singapore Manufacturing Federation TUV SUD PSB Pte Ltd
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Contents
Page National Foreword 9
1 Scope 11
2 Conditions of use 11
3 Terms and definitions 12
4 General 16
5 General conditions for type testing 16
6 Classification and rating 18
7 Marking and labelling 19
8 Clearances, creepage distances and solid insulation 21
9 Accessibility of live parts 25
10 Provisions for earthing 26
11 Terminals and terminations 26
12 Not used
13 Construction of socket-outlets 31
14 Resistance to ageing, resistance to humidity and protection provided by enclosures ______ 38
15 Insulation resistance and electric strength 41
16 Temperature rise 42
17 Breaking capacity of socket-outlets 45
18 Normal operation of socket-outlets 46
19 Connection of flexible cables and cable anchorage 47
20 Mechanical strength 49
21 Screws, current-carrying parts and connections 51
22 Resistance to heat 52
23 Resistance to abnormal heat and fire 54
24 Resistance to excessive residual stresses and to rusting 55
25 Not used
26 Not used
Annexes A (normative) The construction and calibration of a calibrated link 80
B (normative) Measurement of clearances and creepage distances 82
C (normative) Determination of the Comparative Tracking Index (CTI) and Proof Tracking Index (PTI) 87
D (normative) Relation between rated impulse withstand voltage, rated voltage and overvoltage Category 88
E (normative) Pollution degree 89
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Page F (normative) Impulse voltage test 90
G (normative) Test plug for temperature-rise test 92
H (informative) Specific structure of BS EN 50525 and its derivation from British Standards and from HD 21and HD 22 (BS EN 50525-1:2011, National Annex NA) 93
I (normative) Requirements for incorporated electronic components 94
Tables 1 Schedule of tests 17
2 Rated current and maximum fuse rating in normal use, and load for flexing and flexible cable grip tests related to size of flexible cable 20
3 Minimum clearances for basic insulation 22
4 Minimum creepage distances (mm) for basic insulation 24
5 Withstand voltages for insulation types 24
6 Torque values for screws and nuts 27
7 Actuator test force 34
8 Tightening torque values for cable glands 40
9 Permitted temperature rises 43
10 Loading of socket-outlets for temperature-rise test 44
11 Connection of flexible cables 48
12 Application of glow-wire test 54
B.1 Minimum values of width X 82
D.1 Rated impulse withstand voltage for plugs energised directly from the low-voltage mains 88
F.1 Test voltages for verifying clearances at sea level 91
H.1 Specific structure of BS EN 50525 and its derivation from British Standards and from HD 21and HD 22 (BS EN 50525-1:2011, National Annex NA) 93
Figures 1 Test pin (see Clause 12) 56
2a Apparatus for mechanical strength test on resilient covers (see Clause 9) 57
2b Hardwood block for figure 2a 58
3 Disposition of socket contacts (see Clause 13) 59
4-10 Not used
11 GO gauge for socket-outlet (see Clause 13) 60
12 Contact test gauge (see Clause 13) 61
13 Test apparatus and circuit for use with contact and non-contact gauges (see Clause 13) 62
14 Non contact test gauge (see Clause 13) 63
15 Turning moment gauge (see Clause 13) 64
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Page 16a Withdrawal pull gauges for effectiveness of contact: Gauge for earthing socket
contact (see Clause 13) 65
16b Withdrawal pull gauges for effectiveness of contact: Gauge for line and neutral current-carrying socket contacts (see Clause 13) 66
17 Not used
18 Apparatus for flexing test (see Clause 19) 67
19 Solid link for test on fuse clips (see Clause 20) 68
20 Tumbling barrel (see Clause 20) 69
21a Pendulum impact test: General view of apparatus (see Clause 20) 70
21b Pendulum impact test: Constructional details of striking elements (see Clause 20) 71
21c Pendulum impact test: Constructional details of mounting support for test samples (see Clause 20) 72
22 Arrangements for mechanical strength test for portable socket-outlets (see Clause 20) 73
23 Apparatus for pressure test (see Clause 22 74
24L Ball pressure test (see Clause 22) 75
25- 27 Not used
28 Calibrated link (see A.1) 76
29 Calibrated jig for calibrated link (see A.2) 77
30 Test plug for temperature rise (see Annex G) 78
Bibliography 100
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National Foreword This Singapore Standard was prepared by the Working Group on Plugs, Socket-outlets and Switches appointed by the Technical Committee on Electrical and Electronic Products under the direction of the Electrical and Electronic Standards Committee. This standard is a revision of SS 145 : Part 2 : 2010 ‘Specification for 13 A plugs and socket-outlets, Part 2 : 13 A switched and unswitched socket-outlets’. It is a modified adoption on BS 1363-2:2016+ A1:2018 ‘13 A plugs, socket-outlets, adaptors and connection units, Part 2 : Specification for 13 A switched and unswitched socket-outlets’ and is reproduced with permission from the BSI Standards Limited. The following modifications have been made to suit local conditions, practices and regulations: - Added a sentence in the scope that explicitly states that the standard does not cover socket-
outlet incorporating the remote control switching function.
- Changed the ambient temperature under conditions for use for socket-outlets from -5°C ± 40°C with the average value over 24 h not exceeding +25°C to having a peak value not exceeding +40°C, the average value over 24 h not exceeding +35°C.
- Changed the ambient temperature of 20°C ± 5°C used for test condition for socket-outlets to
27°C ± 5°C. - For Table 1:
Added a new reference 19.7L in Sequence 1. Shifted Annex C from Sequence 7 to Sequence 8. Deleted Sequence 11 and 12 on electrical vehicle charging as it is preceded by the local
requirements on electric vehicle charging system.
- For Table 2, deleted the 1 mm2 testing parameters.
For 11.4, amended the nominal conductor cross-sectional area of flexible cable from 1 mm2 to 1.25 mm2.
- Deleted the point on rewirable plug fitted with 2-core 0.5mm2 flexible cable in 14.3.2 and 14.3.3
to align with local requirements. - Under 22.2.1, amended the test temperature for parts of insulating material related to fixed and
portable socket-outlets to be the same at 125oC ± 5oC to align with local requirements. - Added local requirements in Clauses 13, 19, 22, Annex I.6 and Figure 24. Where these new
requirements are added, they are indicated by ‘L’ immediately after the clause number, term or table.
- Deleted Clauses 1, 6.2.8, 17.2, 17.2.1, 18.2, 18.2.1 and 26 on electrical vehicle charging as it
is preceded by the local requirements on electric vehicle charging system.
To facilitate identification, the affected text of the British Standard (BS) which was changed within this standard is indicated by a left marginal bar adjacent to it.
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Attention is drawn to the following: - Where applicable, the references to BS or BS EN standards have been replaced with the
equivalent Singapore Standards. - Where BS EN is an adoption of the IEC standard, the IEC standard should be referred to. - The numbering of the clauses, tables, figures and annexes follows that of BS 1363-2.
Attention is also drawn to the possibility that some of the elements of this Singapore Standard may be the subject of patent rights. Enterprise Singapore shall not be held responsible for identifying any or all of such patent rights.
NOTE 1. Singapore Standards (SS) and Technical References (TR) are reviewed periodically to keep abreast of
technical changes, technological developments and industry practices. The changes are documented through the issue of either amendments or revisions.
2. An SS or TR is voluntary in nature except when it is made mandatory by a regulatory authority. It can also
be cited in contracts making its application a business necessity. Users are advised to assess and determine whether the SS or TR is suitable for their intended use or purpose. If required, they should refer to the relevant professionals or experts for advice on the use of the document. Enterprise Singapore shall not be liable for any damages whether directly or indirectly suffered by anyone or any organisation as a result of the use of any SS or TR.
3. Compliance with a SS or TR does not exempt users from any legal obligations.
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Specification for 13 A plugs and socket-outlets – Part 2 : 13 A switched and unswitched socket-outlets 1 Scope This part of SS 145 specifies requirements for 13 A switched and unswitched shuttered socket-outlets for household, commercial and light industrial purposes, with particular reference to safety in normal use. The socket-outlets are suitable for the connection of appliances, sound-vision equipment, luminaires, etc. in a.c. circuits only, operating at voltages not exceeding 250 V r.m.s. at 50 Hz using plugs in accordance with SS 145-1. Requirements are specified for 13 A shuttered socket-outlets in single or multiple arrangements, with or without associated controlling switches, for flush mounting in suitable boxes, e.g. conforming to BS 4662:2006+A1:2009, or for surface or panel mounting or for portable use. Fixed socket-outlets are intended for use with cables conforming to SS 358-3 and cables to the relevant part of BS EN 50525 (see Annex H), having copper conductors. Portable socket-outlets are intended for use with flexible cables, conforming to SS 358-5. Socket-outlets incorporating fuse links, switches and indicator lamps are included within the scope of this part of SS 145. Socket-outlets incorporating electronic components as detailed in Annex I are included within the scope of this part of SS 145. Socket-outlets conforming to this standard are shuttered and therefore do not require the use of additional means to shield the current-carrying contacts when no plug is present in the socket-outlet. This standard does not cover socket-outlet incorporating remote control switching function. NOTE 1 – The titles of the publications referred to in this part of SS145 are listed in the bibliography. NOTE 2 – In order to maintain safety and interchangeability with plugs and socket-outlets it is necessary that these products conform to the requirements of Clause 9 and Clause 13 of this part of SS145, however their body outline need not be limited at a distance of 6.35 mm from the plug engagement surface. NOTE 3 – Requirements for electromagnetic compatibility for socket-outlets that incorporate electronic devices are given in Annex I. A socket-outlet that does not incorporate electronic devices does not emit intolerable electromagnetic interference since significant electromagnetic disturbances are only generated during insertion and withdrawal which are not continuous. A socket-outlet that does not incorporate electronic devices is mechanical by nature of construction. The product is therefore immune from electromagnetic interference.