Bsi bs en 50250 2002 + a1 2015

1 Scope Replacement: This standard applies to conversion adaptors intended mainly for industrial use, comprising a housing of insulating material which incorporates an industrial 2P + ,

Incorporating corrigendum

National foreword

This British Standard is the UK implementation of EN 50250:2002+A1:2015,

The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CENELEC text carry the number

of the CENELEC amendment For example, text altered by CENELEC amendment A1 is indicated by !"

The UK participation in its preparation was entrusted by Technical Committee PEL/23, Electrical accessories, to Subcommittee PEL/23/4, Protected type plugs and sockets

A list of organizations represented on this committee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was

published under the authority

of the Standards Policy and

Strategy Committee

on 28 July 2003

Amendments/corrigenda issued since publication

17363Corrigendum No 1 28 September 2007 Implementation of CENELECcorrigendum August 2007

31 May 2015 Implementation of CENELEC

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom

March 2015

This European Standard supersedes EN 50250:1998

The following dates were fixed:

- latest date by which the EN has to be implemented

at national level by publication of an identical

- latest date by which the national standards

Annexes designated "normative" are part of the body of the standard

Annexes designated "informative" are given for information only

In this standard, Annexes AA and CC are normative and Annex BB is informative

The contents of the corrigendum of August 2007 have been included in this copy

This amendment (EN 50250:2002/A1:2015) was prepared by the CLC/SR 23H, " Industrial plugs and socket-outlets"

The following dates are fixed:

latest date by which this document has to be implemented at

national level by publication of an identical national

standard or by endorsement

latest date by which the national standards conflicting with this

This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC)

This standard was amended to correct references in the Annexes

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights

Foreword to amendment A1

The clauses in this standard amend or replace the clauses of the above mentioned

EN 60309-1

1 Scope

Replacement:

This standard applies to conversion adaptors intended mainly for industrial use, comprising a housing of insulating material which incorporates an industrial 2P + , 16 A, 6 h 250 V~ type plug part (Table 104 in standard EN 60309-2) and one

or two outlets in accordance with the relevant national standards for outlets for household and similar use, with a rated current up to 16 A, intended mainly for industrial use either indoors or outdoors

socket-Adaptors can be used in conjunction with socket-outlets and/or connectors

This standard applies to all applications where the ambient temperature does not normally exceed 40 °C

The use of these adaptors on building sites, for agricultural, commercial and domestic applications is not precluded but care should be taken in considering protecting devices in use

Adaptors are for temporary use only

In locations where special conditions prevail, for example on board ship or where explosions are liable to occur, additional requirements may be necessary

This clause of EN 60309-1 is applicable with the following additions:

EN 60309-1 1999 Plugs, socket-outlets and couplers for industrial purposes -

Part 1: General requirements (IEC 60309-1:1999)

EN 60309-2 1999 Plugs, socket-outlets and couplers for industrial purposes -

Part 2: Dimensional interchangeability requirements for pin and contact-tube accessories (IEC 60309-2:1999)

EN 60529 1991 Degrees of protection provided by enclosures (IP Code)

(IEC 60529:1989)

NOTE See Annex AA for national standards for domestic socket-outlets

EN 5 0525-2-1 1 2011 Electric cables - Low voltage energy cables of rated voltages up to

and including 450/750 V (Uo/U) - Part 2-11: Cables for generalapplications - Flexible cables with thermoplastic PVC insulation

!

"

rated current of an adaptor

- the rated current of the plug part of the adaptor, or

- the sum of the rated currents of the plugs that can be inserted into the adaptor, whichever is the lower

4.2 General notes on tests

4.2.1 Replacement:

Tests according to this standard are type tests

The parts of adaptors are tested, unless otherwise specified, in accordance with the requirements of the relevant standard, as applicable; e.g plug part is tested according

to EN 60309-2 and socket-outlet parts are tested according to the relevant national standards

4.2.4 Replacement:

Unless otherwise specified, one set of three specimens shall be subjected to all the tests

4.2.5 Replace the first paragraph of the note by:

NOTE In general, it will only be necessary to repeat the tests which caused the failure, unless the specimens fail in test of Clause 21, in which case tests shall be repeated from Clause 20 onwards

Addition:

4.2.101 If gauges are used, these shall be of hardened steel, and all corners shall be

slightly rounded-off with a maximum radius of 0,1 mm and the surface-finish for all measurement-surfaces shall be N8 min, unless otherwise specified

Rated current: 13 A, 15 A and 16 A

NOTE 13 A rated current is allowed only in countries where plugs are fused

6 Classification

Replacement:

6.1 Adaptors are classified:

6.1.1 According to the degree of protection against harmful ingress of water in accordance with EN 60529

- IPX0 (non-protected),

- IP X4 (protected) ≥

NOTE The degree of protection of the socket-outlets for industrial use, when used in conjunction with

an adaptor, will revert to the protection rating of the adaptor if this is less than that of the socket-outlet

6.1.2 According to the type of construction

- serviceable adaptors,

- non-serviceable adaptors

7 Marking

Replacement:

7.1 Adaptors shall be marked with

- rated current in amperes,

- rated operating voltage or range in volts,

- symbol for nature of supply,

- either the name or trade mark of the manufacturer or of the responsible vendor,

- type reference, which may be a catalogue number,

- symbol for degree of protection (IP code),

- symbol indicating the position of the earthing contact (plug part side),

- wording "FOR TEMPORARY USE ONLY"

Adaptors shall be provided with manufacturer instruction stating that

- for adaptors having a degree of protection IPX0 the user should be aware that the degree of protection of the industrial socket-outlet in which it will be inserted will

be reduced,

- adaptors shall not be used in explosive atmosphere

NOTE 1 This wording should be written in the official language of the country of intended use

Compliance is checked by inspection

NOTE 2 Marking 10/16 should be accepted as indication for socket-outlet parts in accordance with standard CEE 7

The symbol indicating the position of the earthing contact shall be placed before or above the figure indicating the rated operating voltage, and separated from it by a line

These markings shall be placed after that for rated current, separated from it by a dash, if an oblique line separates the symbol indicating the position of the earthing contact from the figure for the rated operating voltage

If a symbol for nature of supply is used, it shall be placed next to or below the marking for rated operating voltage

The marking for rated current, position of the earthing contact, rated operating voltage(s) and the nature of the supply may accordingly be as follows:

IPXX degree of protection according to EN 60529

For marking of rated current(s) and rated operating voltage(s) or range(s), figures may

be used alone

Compliance is checked by inspection

7.3 The marking specified in 7.1 shall be readily visible when the adaptor is equipped and ready for use, with the exception of the wording "FOR TEMPORARY USE ONLY" which shall also be visible when the adaptor is in use

NOTE 1 The term "ready for use" does not imply that the adaptor is in engagement with its complementary accessory

NOTE 2 The marking for rated current, nature of supply, rated operating voltage and the name, trade mark of the manufacturer or the responsible vendor, may be repeated on the lid, if any

Compliance is checked by inspection

7.4 In serviceable adaptors the earthing contacts shall be indicated by the symbol This symbol shall be placed close to the corresponding terminals, and should not

be placed on screws, washers or other removable parts

7.5 Markings shall be indelible and easily legible

Compliance is checked by inspection and by the following test

After the humidity treatment in Clause 18 the marking shall be rubbed vigorously by hand for 15 s with a piece of cloth soaked in water and again for 15 s in a piece of cloth soaked in petroleum spirit

Special attention is paid to the marking of the name, trade mark or identification mark

of the manufacturer or the responsible vendor and to that of the nature of supply and

to the warning note

NOTE It is recommended that the petroleum spirit used is of a type consisting of a solvent hexane with

an aromatic content of maximum 0,1 volume percentage, a kauri-buthanol value of 29, an initial boiling point of approximately 65 °C, a dry point of approximately 69 °C and a density of approximately 0,68 g/cm3

7.6 If, in addition to the marking prescribed, the rated operating voltage is indicated by means of a colour, the colour code shall be blue An indicating colour, if different from that of the enclosure, shall be used only if it can be easily distinguished

8 Dimensions

This clause of EN 60309-1 is applicable except as follows:

8.1 Replacement:

The plug part of adaptors shall comply with standard sheet 2-II of EN 60309-2 insofar

as this applies The socket-outlet part or parts shall comply with the dimensional requirements of the relevant national standards listed in Annex AA

Socket-outlet or plug parts with a variable configuration relating to the coupling (e.g distance between centres or pin diameter) are not permitted

Plug part

Compliance is checked by means of gauges or by measurements for those dimensions not covered by gauges For plug part of adaptors, the gauges are shown in Figure 107 and Figure 108 of EN 60309-2

Gauges shall be moved axially to the centre line of the plug part with the force indicated below applied for one minute:

- force (max.) for the "go" gauge 60 N,

- force for the "not go" gauge 20

The position of the earthing contact shall be 6 h

Compliance is checked by inspection

In addition, the design of the plug part shall be such that improper connections shall

not be possible between

- the earth contact and a live socket contact, or a live plug contact and the earth

socket contact,

- the phase plug-contact and the neutral socket contact, if any,

- a neutral plug-contact and phase socket contact

Compliance is checked by inspection and tests using the methods indicated below

These tests are made after storage of test specimens of insulating material at a

temperature of (20 ± 5) °C and with relative humidity between 45 % and 75 % for

4 weeks

In case of plug parts with a housing of thermoplastic material this test is made at a

temperature of (35 ± 2) °C, both the plug parts and the gauges being at this

temperature

FIRST TEST (key)

The socket gauge shown in Figure 109 of EN 60309-2 is placed before the plug in

such a way that during the test the key shall hit the lower part of the shroud of the

gauge approximately in the middle

The force F is slowly increased in such a way that the total force given in the following

Table 101 is exerted after 15 s After that the full force is applied for one minute

Table 101 Rated current

A

Force F

N

16 175

While the force is applied the gauge is not permitted to move more than 4 mm in

relation to the shroud of the plug part

After the test the plug part shall not be damaged in such a way that impairs the further

use of the adaptor

These force is equal to 1,4 times the corresponding withdrawal force

SECOND TEST (earth pin)

The force F shall be applied to the earth pin in the same manner and for the same

duration as in the previous test

After the test, the plug part shall comply with the relevant standard sheet

For the socket-outlet part compliance is checked by the tests specified in relevant

national standard (listed in Annex AA)

8.3 Addition:

Compliance is checked by manual test and, for adaptors with enclosures of resilient or thermoplastic material, by means of the gauge shown in Figure 114 of EN 60309-2 The gauge is applied with a force of 200 N for 1 min

For adaptors with enclosures of thermoplastic material, the gauge is applied at a temperature of (35 ± 2)°C, both the adaptor and the gauge being at this temperature

NOTE For adaptors of rigid material, such as metal, thermosetting resin, ceramic material and the like, conformity with the relevant standard sheets ensures compliance with this requirement

9 Protection against electric shock

Replacement:

9.1 Adaptors shall be so designed that in normal use, live parts are not accessible, even after removing parts which can be removed without using a tool when adaptors are either in partial or complete engagement with the industrial socket-outlet

Compliance is checked by inspection, and if necessary by means of the following test

The test finger shown in Figure 2 of EN 60309-1 is applied in every possible position when the plug is partly or wholly inserted into the corresponding socket-outlet

In order to check contact with the live parts, an electrical indicator having a voltage of not less than 40 V and not more than 50 V shall be used

The socket-outlet part shall comply with the requirements of the relevant national standard (listed in Annex AA)

For equipment in which the use of elastomeric or thermoplastic material may affect the test, it shall be repeated at an ambient temperature of (35 ± 2)°C with the equipment

at that temperature

During this additional test the adaptor is subjected for 1 min to a force of 75 N, applied through the tip of a straight unjointed test finger of the same dimensions as the standard test finger shown in Figure 2 of EN 60309-1 This finger with an electrical indicator as described above is applied to all places where yielding of insulating material could impair the safety of the adaptor

During the test the adaptor and its associated fittings shall not deform to such extent that those dimensions shown in the relevant standard sheets which ensure the safety are unduly altered and no live parts shall become accessible

Each specimen of adaptor is then pressed between two flat surfaces with a force of

150 N for 5 min as indicated in Figure 101 The specimen is checked 15 min after removal from the test apparatus, and shall not show such deformation as would result

in undue alteration of those dimensions shown in the relevant standard sheets which are intended to ensure safety

For the socket-outlet part, compliance with the corresponding national standard sheets ensures that the requirement is fulfilled with regards to the inaccessibility of the contacts while the plug is being inserted into the complimentary device

9.2 It shall not be possible to make contact between a pin of a plug and a live contact of a socket-outlet while any other pin is accessible (single pole insertion)

Compliance is checked by manual test

For adaptors with enclosures of thermoplastic material, the gauge is applied at a temperature of (35 ± 2)°C, both the adaptor and the gauge being at this temperature

NOTE 1 Single pole insertion may be prevented by the use of at least one of the following means:

- a sufficiently large cover or cover-plate;

- other means (e.g shutters)

NOTE 2 In some countries the use of shutters as the only means to prevent single pole insertion is not allowed

For the socket-outlet part compliance with the corresponding standard sheets ensures that the requirement is fulfilled

9.3 The outer parts of adaptors, excluding fixing screws and the like, the live and earth pins, and the earth bars, shall be of insulating material

Compliance is checked by inspection

NOTE Varnishes, enamels or sprayed insulating coatings are not regarded as insulating materials for the purposes of the specifications mentioned in 9.1 to 9.3 inclusive

For the socket-outlet part compliance is checked by the tests specified in the relevant national standard (listed in Annex AA)

10 Provision for earthing

NOTE Conformity with the relevant national standard sheets ensures compliance with this requirement

10.2 The earth terminals of serviceable adaptors shall be in accordance with the appropriate requirements in Clause 11

These shall be of the same size as the corresponding terminals for live conductors

The earth terminals of adaptors shall be internal; in addition to this they shall be fixed

to the body or to a part which is securely attached to the body

10.3 Earthing contacts shall be capable of carrying a current equal to that specified for the phase contacts, without overheating

Compliance is checked by the test of Clause 22

10.4 Earthing contacts of domestic socket-outlets shall comply with relevant national standards

Compliance is checked as prescribed in the relevant national standards

The use of components with removable terminals is permitted but the connections shall be made by soldering, welding, crimping or by similar means

Compliance is checked by inspection and by means of the tests specified below as appropriate

11.3 Parts of terminals, other than screws, nuts, washers, stirrups, clamping plates and the like, shall be either of

- copper,

- an alloy containing at least 58 % copper for parts that are worked cold or at least

50 % copper for other parts,

- or other metal not less resistant to corrosion than copper and having mechanical properties no less suitable

Steel screws shall be adequately protected against corrosion

Compliance is checked by inspection and by chemical analysis

11.4 Serviceable adaptors shall be fitted with terminals which ensure that copper conductors having nominal cross-sections from 1 mm2 to 2,5 mm2 are correctly connected

The plug part terminals shall comply with the standard sheets 2-X and/or 2-XI of

EN 60309-2

The socket-outlet part terminals shall comply with the relevant national standards

11.5 Terminals with screw clamping shall allow the conductor to be connected without special preparation

Compliance is checked by inspection

NOTE The term "special preparation" covers soldering of wires of the conductor, use of cable lug, formation of eyelets etc., but not reshaping of the conductor before its introduction into the terminal or the twisting of a flexible conductor to consolidate the end

11.6 Terminals with screw clamping shall have adequate mechanical strength Screws and nuts for clamping the conductors shall have a metric ISO thread or a thread comparable in pitch and mechanical strength

Screws shall not be of metal which is soft or liable to creep, such as zinc or aluminium

Compliance is checked by inspection and by the tests of 11.8 and 11.10

NOTE For a temporary period, measure SI, BA and UN threads will be considered as being of equivalent pitch and mechanical strength to ISO metric threads

11.7 Terminals shall be so designed that they clamp the conductor between metal surfaces with sufficient contact pressure and without damage to the conductor

Compliance for the plug part is checked by inspection and the type tests of the terminals of 11.8 and 11.9 of EN 60309-2, applied to three separate terminals

Compliance for the socket-outlet part is checked by inspection and the type tests of the terminals of the relevant national standards

11.8 Terminals shall be properly fixed to the adaptor and shall not work loose when the clamping screws or nuts are tightened or loosened

Screws and nuts for clamping the conductors shall not serve to fix any other component

NOTE 1 The clamping means for the conductor may be used to stop rotation or displacement of the adaptor contacts

Compliance is checked by inspection and, if necessary, by the test of 25.1

NOTE 2 These requirements do not preclude terminals that are floating or terminals so designed that rotation or displacement of the terminal is prevented by the clamping screw or nut, provided that their movement is appropriately limited and does not impair the correct operation of the adaptor

NOTE 3 Terminals may be prevented from working loose by fixing with two screws, by fixing with one screw in a recess such that there is no appreciable play, or by other suitable means

NOTE 4 Covering with sealing compound without other means of locking is not deemed to be sufficient Self-hardening resins may, however, be used to lock terminals which are not subjected to torsion in normal use

11.9 Clamping screws or nuts of earthing terminals shall be adequately locked against accidental loosening, and it shall not be possible to loosen them without the use of a tool

Compliance is checked by inspection and by manual test

11.10 Earthing terminals with screw clamping shall be such that there is no risk of

corrosion resulting from contact between them and the copper of the earthing conductor, or any other metal that is in contact with them

The body of the earthing terminal shall be of brass or other metal no less resistant to corrosion

Compliance is checked by inspection

NOTE Screws or nuts of plated steel withstanding the corrosion test are considered to be of a metal no less resistant to corrosion than brass

11.11 Terminals shall be so located or shielded that

- screws becoming loose from the terminals can not establish any electrical connection between live parts and metal parts connected to the earthing terminal,

- conductors becoming detached from live terminals cannot touch metal parts connected to the earthing terminal,

- conductors becoming detached from the earthing terminal cannot touch live parts

Compliance is checked by inspection and by manual test

11.12 W hen the conductors have been correctly fitted, there shall be no risk of

accidental contact between live parts of different polarity or between such parts and accessible metal parts, and, should a wire of a stranded conductor escape from the terminal, there shall be no risk that wires emerge from the enclosure

Compliance is checked by inspection, and, where the risk of accidental contact between live parts and other metal parts is concerned, by the following test

A 6 mm length of insulation is removed from the end of a flexible conductor having a cross-section area in the middle of the range specified in 11.4 One wire of the stranded conductor is left free and the other wires are fully inserted into and clamped

NOTE If necessary the test is repeated with the free wire in another position