kSIST FprEN IEC 60309-1:2021

Plugs, fixed or portable socket- outlets and appliance inlets for industrial purposes - Part 1: General requirements

IEC 60309-1:2021 applies to plugs, fixed or portable socket-outlets and appliance inlets hereinafter referred to as accessories, with a rated operating voltage not exceeding 1 000 V DC or 1 000 V AC with a frequency not exceeding 500 Hz and a rated current not exceeding 800 A, primarily intended for industrial use, either indoors or outdoors. This fifth edition cancels and replaces the fourth edition published in 1999, Amendment 1:2005 and Amendment 2:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:  addition of classification, requirements and tests for accessories with shutters; additional marking to indicate neutral terminal and/or earthing terminal; replacement of the term "connector" by the term "portable socket-outlet".

Stecker, Steckdosen und Kupplungen für industrielle Anwendungen - Teil 1: Allgemeine Anforderungen

Prises de courant pour usages industriels - Partie 1: Règles générales

L'IEC 60309-1:2021 s’applique aux fiches, socles fixes de prise de courant, prises mobiles et socles de connecteur, ci-après désignés par le terme les "appareils", de tension nominale d’emploi ne dépassant pas 1 000 V en courant continu ou 1 000 V en courant alternatif, de fréquence ne dépassant pas 500 Hz, et de courant nominal ne dépassant pas 800 A, destinés essentiellement aux usages industriels, à l’intérieur ou à l’extérieur des bâtiments. Cette cinquième édition annule et remplace la quatrième édition parue en 1999, son Amendement 1:2005 et son Amendement 2:2012. Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:  ajout d'une classification, d’exigences et d’essais relatifs aux appareils équipés d’obturateurs; marquage supplémentaire pour indiquer la borne du neutre et/ou la borne de terre; remplacement du terme "connecteur" par le terme "prise mobile".

Vtiči, fiksne ali prenosne vtičnice in vtičnice za industrijsko rabo - 1. del: Splošne zahteve

General Information

• Status: Not Published
• Public Enquiry End Date: 24-Oct-2019
• ICS: 29.120.30 - Plugs, socket-outlets, couplers
• Technical Committee: EPR - Electrical accessories
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 31-Mar-2021
• Due Date: 19-May-2021
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/468 - Standardisation mandate addressed to CEN and CENELEC and ETSI concerning the charging of electric vehicles
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: FprEN IEC 60309-1:2021 - Plugs, fixed or portable socket- outlets and appliance inlets for industrial purposes - Part 1: General requirements

RELATIONS

• Revised: SIST EN 60309-1:2000/A1:2008 - Plugs, socket-outlets and couplers for industrial purposes -- Part 1: General requirements
• Effective Date: 13-Nov-2017
• Revised: SIST EN 60309-1:2000/A2:2012 - Plugs, socket-outlets and couplers for industrial purposes - Part 1: General requirements (IEC 60309-1:1999/A2:2012)
• Effective Date: 13-Nov-2017
• Revised: SIST EN 60309-1:2000 - Plugs, socket-outlets and couplers for industrial purposes -- Part 1: General requirements
• Effective Date: 13-Nov-2017
• Revised: SIST EN 60309-1:2000/A1:2008/AC:2014 - Plugs, socket-outlets and couplers for industrial purposes - Part 1: General requirements (IEC 60309-1:1999/A1:2005/COR1:2014)
• Effective Date: 13-Nov-2017

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60309-1:2019
01-oktober-2019

Vtiči, fiksne ali prenosne vtičnice in vtičnice za industrijsko rabo - 1. del: Splošne

zahteve

Plugs, fixed or portable socket- outlets and appliance inlets for industrial purposes - Part

1: General requirements

Stecker, Steckdosen und Kupplungen für industrielle Anwendungen - Teil 1: Allgemeine

Anforderungen
Prises de courant pour usages industriels - Partie 1: Règles générales
Ta slovenski standard je istoveten z: prEN IEC 60309-1:2019
ICS:
29.120.30 Vtiči, vtičnice, spojke Plugs, socket-outlets,
couplers
oSIST prEN IEC 60309-1:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 60309-1:2019
23H/456/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60309-1 ED5
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2019-08-09 2019-11-01
SUPERSEDES DOCUMENTS:
23H/431/CD,23H/452/CC

IEC SC 23H : PLUGS, SOCKET-OUTLETS AND COUPLERS FOR INDUSTRIAL AND SIMILAR APPLICATIONS, AND FOR ELECTRIC

VEHICLES
SECRETARIAT: SECRETARY:
France Mr Bertrand Doignon
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of

which they are aware and to provide supporting documentation.
TITLE:

Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1:

General requirements
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:

Pursuant to a decision taken during the last plenary meeting of SC 23H in Busan in 2018, the term

"connector" will be no longer used in IEC 60309 series. As a consequence, 60309 series is renamed

"PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND APPLIANCE INLETS FOR INDUSTRIAL
PURPOSES. This decision has no impact on the French title.

Copyright © 2019 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to

download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National

Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for

any other purpose without permission in writing from IEC.
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1 CONTENTS

3 FOREWORD ........................................................................................................................... 5

4 INTRODUCTION ..................................................................................................................... 7

5 1 Scope .............................................................................................................................. 8

6 2 Normative references ...................................................................................................... 8

7 3 Terms and definitions ...................................................................................................... 9

8 4 General ......................................................................................................................... 16

9 5 Standard ratings ............................................................................................................ 17

10 6 Classification ................................................................................................................. 18

11 7 Marking ....................................................................................................................... 19

12 8 Dimensions ................................................................................................................... 23

13 9 Protection against electric shock ................................................................................... 23

14 10 Provision for earthing .................................................................................................... 27

15 11 Terminals and terminations............................................................................................ 27

16 12 Interlocks....................................................................................................................... 44

17 13 Resistance to ageing of rubber and thermoplastic material ............................................ 44

18 14 Construction .................................................................................................................. 45

19 15 Construction of socket-outlets ....................................................................................... 46

20 16 Construction of plugs and portable socket-outlets .......................................................... 47

21 17 Construction of appliance inlets ..................................................................................... 48

22 18 Degrees of protection .................................................................................................... 49

23 19 Insulation resistance and dielectric strength .................................................................. 50

24 20 Breaking capacity .......................................................................................................... 51

25 21 Normal operation ........................................................................................................... 54

26 22 Temperature rise ........................................................................................................... 56

27 23 Flexible cables and their connection .............................................................................. 58

28 24 Mechanical strength ...................................................................................................... 64

29 25 Screws, current-carrying parts and connections ............................................................. 70

30 26 Creepage distances, clearances and distances through sealing compound .................... 73

31 27 Resistance to heat, to fire and to tracking ...................................................................... 75

32 28 Corrosion and resistance to rusting ............................................................................... 76

33 29 Conditional short-circuit current withstand ..................................................................... 77

34 30 Electromagnetic compatibility ........................................................................................ 81

35 Annex A (normative) Guidance and description of test apparatus ........................................ 83

36 Bibliography .......................................................................................................................... 91

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38 Figure 1 – Diagram showing the use of the accessories ........................................................ 11

39 Figure 2 – Pillar terminals ..................................................................................................... 12

40 Figure 3 – Screw terminals ................................................................................................... 12

41 Figure 4 – Stud terminals ...................................................................................................... 13

42 Figure 5 – Saddle terminals .................................................................................................. 13

43 Figure 6 – Lug terminals ....................................................................................................... 13

44 Figure 7 – Mantle terminals .................................................................................................. 14

45 Figure 8 – Screwless terminals ............................................................................................. 14

46 Figure 9 – Insulation piercing terminals ................................................................................. 15

47 Figure 10 – Test piston ......................................................................................................... 22

48 Figure 11 – Gauge “A” for checking shutters ......................................................................... 25

49 Figure 12 – Gauge “B” for checking shutters ......................................................................... 26

50 Figure 13 – Gauges for testing insertability of round unprepared conductors having the

51 maximum specified cross-section .......................................................................................... 33

52 Figure 14 – Information for the bending test .......................................................................... 36

53 Figure 15 – Test arrangement for terminals .......................................................................... 40

54 Figure 16 – Circuit diagrams for breaking capacity and normal operation tests ..................... 53

55 Figure 17 – Apparatus for testing the cable anchorage ......................................................... 61

56 Figure 18 – Arrangement for mechanical strength test for plugs and portable socket-

57 outlets .................................................................................................................................. 66

58 Figure 19 – Apparatus for flexing test ................................................................................... 67

59 Figure 20 – Diagram of the test circuit for the verification of short-circuit current

60 withstand of a two-pole equipment on a single-phase AC or DC ............................................ 79

61 Figure 21 – Diagram of the test circuit for the verification of short-circuit current

62 withstand of a three-pole equipment ..................................................................................... 80

63 Figure 22 – Diagram of the test circuit for the verification of short-circuit current

64 withstand of a four-pole equipment ....................................................................................... 81

65 Figure A.1 – Impact test fixture – Pendulum assembly .......................................................... 85

66 Figure A.2 – Impact test fixture – Pendulum masses – Quantity: 4 ........................................ 86

67 Figure A.3 – Impact test fixture – Pendulum shaft end .......................................................... 87

68 Figure A.4 – Impact test fixture – Pendulum anvil ................................................................. 88

69 Figure A.5 – Impact test fixture – Pendulum shaft ................................................................. 88

70 Figure A.6 – Impact text fixture – Pendulum pivot ................................................................. 89

71 Figure A.7 – Impact test apparatus – Back and mounting plates ........................................... 90

73 Table 1 - Preferred rated currents ......................................................................................... 17

74 Table 2 – Colour coding ........................................................................................................ 22

75 Table 3 – Size for connectable conductors ............................................................................ 31

76 Table 4 – Deflection test forces ............................................................................................ 37

77 Table 5 – Pulling test values on terminals ............................................................................. 41

78 Table 6 – Pulling force .......................................................................................................... 42

79 Table 7 – Test current ........................................................................................................... 43

80 Table 8 – Dielectric strength test .......................................................................................... 51

81 Table 9 – Breaking capacity .................................................................................................. 54

82 Table 10 – Normal operation ................................................................................................. 55

83 Table 11 – Temperature rise test .......................................................................................... 57

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84 Table 12 – Types of cables ................................................................................................... 59

85 Table 13 – Dimensions of cables .......................................................................................... 62

86 Table 14 – Torque test values ............................................................................................... 63

87 Table 15 – Blow test impact energy ...................................................................................... 65

88 Table 16 – Flexing test load values ....................................................................................... 68

89 Table 17 – Test values for screwed glands ........................................................................... 68

90 Table 18 – Pulling force on insulated end caps ..................................................................... 70

91 Table 19 – Tightening torques .............................................................................................. 71

92 Table 20 - Creepage distances, clearances and distances through sealing compound ......... 73

93 Table A.1 – Impact test release angles ................................................................................. 86

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95 INTERNATIONAL ELECTROTECHNICAL COMMISSION
96 ____________
98 PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND
99 APPLIANCE INLETS FOR INDUSTRIAL PURPOSES –
100
101 Part 1: General requirements
102
103
104
105 FOREWORD

106 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

107 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

108 international co-operation on all questions concerning standardization in the electrical and electronic fields. To

109 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

110 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

111 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

112 in the subject dealt with may participate in this preparatory work. International, governmental and non-

113 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

114 with the International Organization for Standardization (ISO) in accordance with conditions determined by

115 agreement between the two organizations.

116 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

117 consensus of opinion on the relevant subjects since each technical committee has representation from all

118 interested IEC National Committees.

119 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

120 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

121 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

122 misinterpretation by any end user.

123 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

124 transparently to the maximum extent possible in their national and regional publications. Any divergence

125 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

126 the latter.

127 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

128 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

129 services carried out by independent certification bodies.

130 6) All users should ensure that they have the latest edition of this publication.

131 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

132 members of its technical committees and IEC National Committees for any personal injury, property damage or

133 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

134 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

135 Publications.

136 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

137 indispensable for the correct application of this publication.

138 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

139 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

140 International Standard IEC 60309-1 has been prepared by subcommittee SC 23H: Plugs,

141 socket-outlets and couplers for industrial and similar applications, and for electric vehicles, of

142 IEC technical committee 23: Electrical accessories.

143 This fifth edition cancels and replaces the fourth edition published in 1999, Amendment

144 1:[2005] and Amendment 2:[2012]. This edition constitutes a technical revision.

145 This edition includes the following significant technical changes with respect to the previous

146 edition:

147 a) addition of classification, requirements and tests for accessories with shutters;

148 b) Additional marking to indicate neutral terminal and/or earthing terminal;
149
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150 The text of this International Standard is based on the following documents:
FDIS Report on voting
23H/---/FDIS 23H/---/RVD
151

152 Full information on the voting for the approval of this International Standard can be found in

153 the report on voting indicated in the above table.

154 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

155 The committee has decided that the contents of this document will remain unchanged until the

156 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

157 the specific document. At this date, the document will be
158 • reconfirmed,
159 • withdrawn,
160 • replaced by a revised edition, or
161 • amended.
162
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163 INTRODUCTION

164 A list of all the parts in the IEC 60309 series, under the general title Plugs, fixed or portable

165 socket-outlets, and appliance inlets, can be found on the IEC website.

166 Subsequent parts of IEC 60309 deal with the requirements of particular types of accessories.

167 The clauses of these particular requirements supplement or modify the corresponding clauses

168 in Part 1.
169 In this standard, the following print types are used:
170 – requirements proper: in roman type;
171 – test specifications: in italic type;
172 – notes: in smaller roman type.
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173 PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND
174 APPLIANCE INLETS FOR INDUSTRIAL PURPOSES –
175
176 Part 1: General requirements
177
178
179
180 1 Scope

181 This international standard applies to plugs, fixed or portable socket outlets and appliance

182 inlets hereinafter referred to as accessories, with a rated operating voltage not exceeding

183 1 000 V DC or 1000 V AC not exceeding 500 Hz and a rated current not exceeding 800 A,

184 primarily intended for industrial use, either indoors or outdoors.

185 These accessories are intended to be installed by instructed persons (IEV 195-04-02) or

186 skilled persons (IEV 195-04-01) only.
187 The list of preferred ratings is not intended to exclude other ratings.

188 This document applies to accessories for use when the ambient temperature is normally

189 within the range of –25 °C to +40 °C.

190 These accessories are intended to be connected to cables of copper or copper alloy only.

191 This document applies to accessories with screwless type terminals or insulation piercing

192 terminals, with a rated current up to and including 32 A for series I and 30 A for series II.

193 The use of these accessories on building sites and for agricultural, commercial and domestic

194 applications is not precluded.

195 Fixed socket-outlets or appliance inlets incorporated in or fixed to electrical equipment are

196 within the scope of this standard. This standard also applies to accessories intended to be

197 used in extra-low voltage installations.

198 This document does not apply to accessories primarily intended for domestic and similar

199 general purposes.
200 This document does not cover single-pole accessories

201 In locations where special conditions prevail, for example on board ship or where explosions

202 are liable to occur, additional requirements may be necessary.
203 2 Normative references

204 The following documents are referred to in the text in such a way that some or all of their

205 content constitutes requirements of this document. For dated references, only the edition

206 cited applies. For undated references, the latest edition of the referenced document (including

207 any amendments) applies.
208 IEC 60050, International Electrotechnical Vocabulary (IEV)

209 IEC 60068-2-14, Environmental testing – Part 2-14: Tests – Test N: Change of temperature

210 IEC 60083, Plugs and socket-outlets for domestic and similar general use standardized in

211 member countries of IEC

212 IEC 60112, Method for determining the comparative and the proof tracking indices of solid

213 insulating materials under moist conditions
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214 IEC 60227, (all parts) Polyvinyl chloride insulated cables of rated voltages up to and including

215 450/750 V
216 IEC 60228, Conductors of insulated cables

217 IEC 60245-4, Rubber insulated cables – Rated voltages up to and including 450/750 V – Part 4:

218 Cords and flexible cables
219 IEC 60269-1, Low-voltage fuses – Part 1: General requirements

220 IEC 60269-2, Low-voltage fuses – Part 2: Supplementary requirements for fuses for use by

221 authorized persons (fuses mainly for industrial application) – Sections I to III

222 IEC 60309-4, Plugs, socket-outlets and couplers for industrial purposes – Part 4: fixed and

223 portable switched socket-outlets with or without interlock

224 IEC 60320, (all parts) Appliance couplers for household and similar general purposes

225 IEC 60529, Degrees of protection provided by enclosures (IP code)

226 IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:

227 Principles, requirements and tests

228 IEC 60664-3, Insulation coordination for equipment within low-voltage systems – Part 3: Use

229 of coating, potting or moulding for protection against pollution

230 IEC 60695-2-11, Fire hazard testing –Part 2-11: Glowing/hot-wire based test methods – Glow-

231 wire flammability test method for end-products (GWEPT)

232 IEC 60695-10-2, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test

233 IEC 60947-3, Low-voltage switchgear and controlgear – Part 3: Switches, disconnectors,

234 switch-disconnectors and fuse-combination units

235 ISO 2081, Metallic and other inorganic coatings – Electroplated coatings of zinc with

236 supplementary treatments on iron or steel
237 ISO 2093, Electroplated coatings of tin – Specification and test methods

238 ISO 1456, Metallic and other inorganic coatings – Electrodeposited coatings of nickel, nickel

239 plus chromium, copper plus nickel and of copper plus nickel plus chromium
240 3 Terms and definitions
241 For the purpose of this document, the following terms and definitions apply.

242 ISO and IEC maintain terminological databases for use in standardization at the following

243 addresses:
244 • IEC Electropedia: available at http://www.electropedia.org/
245 • ISO Online browsing platform: available at http://www.iso.org/obp

246 Where the terms voltage and current are used, they imply the DC or the AC root mean square

247 (RMS) values.
248 The application of accessories is shown in Figure 1.
249 3.1
250 fixed socket outlet

251 part intended to be installed with the fixed wiring or incorporated in equipment.

252 Note 1 to entry: A socket-outlet may also be incorporated in the output circuit of an isolating transformer

253 Note 2 to entry: In some countries fixed socket outlets are called “receptacles”

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254 Note 3 to entry: when the term “socket-outlet” is used alone, it covers both fixed and portable socket-outlets

255 3.2
256 plug

257 part integral with or intended to be attached directly to one flexible cable connected to the

258 equipment or to a portable socket-outlet

259 Note 1 to entry: In French the combination of a plug and a socket-outlet is called “prise de courant”

260 3.3
261 portable socket outlet

262 part integral with or intended to be attached to one flexible cable connected to the supply

263 Note 1 to entry: In general, a portable socket-outlets has the same contact arrangement as a fixed socket-outlet.

264 Note 2 to entry: The combination of a portable socket outlet and a plug is called a “cable coupler”.

265 Note 3 to entry: when the term “socket-outlet” is used alone, it covers both fixed and portable socket-outlets

266 3.4
267 appliance inlet

268 part incorporated in, or fixed to, the equipment or intended to be fixed to it

269 Note 1 to entry: In general, an appliance inlet has the same contact arrangement as a plug.

270 Note 2 to entry: The combination of a portable socket outlet and an appliance inlet is called an “appliance coupler”.

271 3.5
272 Main part
273 part of an accessory carrying the contacts
274 3.6
275 rewireable plug or portable socket-outlet
276 an accessory so constructed that the flexible cable can be replaced
277 3.7
278 non-rewireable plug or portable socket-outlet

279 an accessory so constructed that the flexible cable cannot be separated from the accessory

280 without making it permanently useless
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Key
A supply
B fixed socket-outlet
C plug
D flexible cable
E portable socket-outlet
F appliance inlet
G appliance
281 Figure 1 – Diagram showing the use of the accessories
282 3.8
283 interlock

284 a device, either electrical or mechanical, which prevents the contacts of a plug from becoming

285 live before it is in proper engagement with a fixed or portable socket-outlet, and which either

286 prevents the plug from being withdrawn while its contacts are live or makes the contacts dead

287 before separation
288 3.9
289 retaining device

290 a mechanical arrangement which holds a plug or portable socket-outlet in position when it is

291 in proper engagement, and prevents its unintentional withdrawal
292 3.10
293 rated current
294 the current assigned to the accessory by the manufacturer
295 3.11
296 insulation voltage

297 the voltage assigned to the accessory by the manufacturer and to which dielectric tests,

298 clearances and creepage distances are referred
299 3.12
300 rated operating voltage

301 the nominal voltage of the supply for which the accessory is intended to be used

302 Note 1 to entry: an accessory may have a rated operating voltage range
303 Note 2 to entry: an accessory may have more than one rated operating voltage
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304 3.13
305 basic insulation

306 the insulation necessary for the proper functioning of the accessory and for basic protection

307 against electr
...