Date published 
  1. BS EN 60309-1:1999+A2:2012, IEC 60309-1:1999
  2. Iec 62262 pdf
  3. IEC 60309-1:2012
  4. IEC - Wikipedia

EN specifies general functionality and safety requirements for guildlines for all manufactures of IEC plugs, connectors, inlets and outlet. IEC is an international standard from the International Electrotechnical Commission IEC "Plugs, socket-outlets and couplers for industrial purposes" specifies general functional and safety requirements. IEC .. "Industrial Plugs and Sockets to IEC (BS/CEE17) trade price list" ( PDF). Telephone: +41 22 02 11 Telefax: +41 22 03 00 E-mail: [email protected] Web: INTERNATIONAL. STANDARD. IEC. Edition

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Iec 60309-1 Pdf

European standard EN International standard IEC Plugs, socket-outlets and couplers for industrial purposes. Part 1: General requirements. IS/IEC (): Plugs, Socket-Outlets and Couplers for Industrial Purposes The text of the IEC Standard has been approved as suitable for publication. Understanding IEC pin & sleeve device and mechanical interlock catalog numbers ote: and watertight requirements, and as such are.

Not available in single phase version. So called power splitters with this connector as a 3 phase inlet and 3 groups of single phase outputs with individual circuit breakers are generally used to achieve this, and allow load balancing across the phases, important on generator supplies. Similar configurations are used for outdoor exhibitions, festivals and large events. When looking at the mating face of the socket, the phase sequence should be L1, L2, L3, and then the neutral pin, proceeding clockwise from the earth pin. Counter-clockwise on the corresponding plug. Since some wiring may be reversed, which would make motors turn backward, many machines on construction sites feature a phase swap plug that allows the L2 and L3 phase pins to be swapped, thereby reversing the phase sequence. Three-phase electric motors do not need the neutral wire to function, so that there is also a red four pin variant 3 phases and earth of the IEC plugs for three phase power. The two styles are not intermatable, to prevent a potential floating neutral. On larger temporary buildings, particularly with electric heating, the larger 32 A is more common.

Anywhere, anytime, any project. This standard refers to the classification of the degrees of protection provided by enclosures against external mechanical impacts when the rated voltage of the protected IEC is an international standard for enterprise-control system integration.

Contents courtesy IEC Refers to the classification of the degrees of protection provided by enclosures against external mechanical impacts when the rated voltage of the protected equipment is not greater than 72,5 kV. The text of this standard is based on the following documents: IEC Ed. This standard has brought considerable clarity in technical interpretation.

IEC , Luminaires — General requirements and tests IEC , Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts IK code 3 Conditions of estingt 3. Consolidated editions The IEC is now publishing consolidated versions of its publications. Severity 2 maritime environment. The application of an IK rating to a luminaire is considered to be a performance issue and is not directly related to the safety provisions of IEC standards covering luminaire safety.

IEC For example, edition numbers 1. The IEC shall not be held responsible for identifying any or all such patent rights.

Following its adoption as an international standard iec , the European standard was renumbered EN The new standard follows the philosophy of IEC series i. The 5 contacts connection can meet all needs and applications such as lighting.

This is an international numeric classification for the degrees of protection provided by enclosures for electrical equipment against external mechanical impacts. This is an international numeric classification iec the degrees of protection provided by enclosures for electrical equipment against external mechanical impacts. This is an international numeric classification for the degrees of protection EN - Mechanical structures for electronic equipment - Tests for IEC and IEC series - Part 1: Environmental requirements, test set-up and safety aspects for cabinets, racks, subracks and chassis under indoor condition use and transportation IEC specifies how the enclosure must be mounted for IK Impact and IP Testing, the atmospheric conditions required, the quantity and distribution of the test impacts and the impact hammer to be used for each level of Impact IK rating.

E Elements of the IK Code. The PNCX connector is both quickly assembled and put into service. This page was last edited on 9 April , at You can even embed multiple technologies in a single RFID tag, providing transition paths that connect legacy systems with new roll-outs.

This device is for the energy impact test the energy is more than 2J. This site does not host pdf, DOC files all document are the property of their respective owners. Scope Refer to standard. Tests must be carried out according to the standard; the test instruction only adds a few specific details. The PNCX is a compact and rugged connector designed for all types of aggressive environments humidity, corrosion, pollution found in many industrial hazardous areas.

A tag for every application HID can create a custom tag solution to fit your application requirements for chip type, dimensions, programming and materials. It is used for the mechanical strength test of the sheet metal like the substation ark and the metalloid electric energy metering cubicle.

Keep up to date with new publication releases and announcements with our free IEC Just Published email newsletter. IPXX relevant figures Marking of degree of protection on plugs and appliance inlets is only valid when in engagement with a complementary accessory or with an attached cap, if any. The figure for d. Except for flush-type socket-outlets and appliance inlets, these markings shall be easily discernible when the accessory is mounted and wired as in normal use, if necessary after it has been removed from the enclosure.

The marking, if any, for the insulation voltage shall be on the main part; it shall not be visible when the accessory is mounted and wired as in normal use. The marking for rated operating voltage, type reference, the symbol for degree of protection, if required, and the symbol indicating the position of the earthing contact or the means used for interchangeability, if any, shall be on a place which is visible after installation of the accessory, on the outside of enclosure or on the lid, if any, if the latter cannot be removed without the aid of a tool.

With the exception of the type reference, these markings accessory is mounted and wired as in normal use. The marking for rated current, nature of supply, rated operating voltage and the name or trade mark of the manufacturer or the responsible vendor, may be repeated on the lid, if any.

The marking for insulation voltage, if any, shall be on the main part; it shall not be visible the accessory is mounted and wired as in normal use. NOTE The complementary. These symbols shall be placed close to the relevant screws, removable washers or other removable parts.

NOTE - The terminals. Special attention is paid to the marking of the name or trade mark of the manufacturer responsible vendor and to that of the nature of supply, if any. NOTE A special. Table 2 Rated. In addition,. Plugs and appliance inlets shall not allow improper connections with IEC or with connectors complying with IEC Socket-outlets and connectors shall not allow improper connections IEC or with appliance inlets complying with IEC Improper connections include single-pole comply with the requirements for protection Compliance.

In addition, it shall not be possible inlet and a contact of a socket-outlet Compliance is checked normal use. NOTE The neutral. Metal-clad fixed accessories with an internal earthing terminal can, in addition, be provided with an external earthing terminal, which, except for flush type socket-outlets, shall be visible from the outside.

Earthing contacts shall be directly and reliably connected to the earthing terminals, except that the earthing terminal of socket-outlets incorporated in the output circuit of an isolating transformer shall not be connected.

NOTE For the purpose of this requirement, screws for fixing bases, covers accessible parts which may become live in the event of an insulation fault. If accessible metal parts are screened from live parts by metal parts which are connected to an earthing terminal or earthing contact, or if they are separated from live parts by double insulation or reinforced insulation, they are not, for the purpose of this requirement, regarded as likely to become live In the event of an insulation fault.

A current of 25 A derived from an a. NOTE Care should be taken that the contact resistance part under test does not influence the test results. Steel screws shall be adequately Compliance. If the body is part of the metal frame or housing, the clamping screw or nut shall be of such material. If the body of the earthing terminal is part of a frame or housing of aluminium or aluminium alloy, precautions shall be taken to avoid the risk of corrosion resulting from contact between copper and aluminium or its alloys.

NOTE The requirement regarding coated metal screws or nuts. More detailed. For terminals other than lug terminals, tests of For pillar terminals in which the end of a conductor is not visible, the hole to accommodate the conductor shall have a depth such that the distance between the bottom of the hole and the last screw will be equal to at least half the diameter of the screw, and in any case not less than 1,5 mm. For terminals complying with figure 14f, the lug shall accept conductors sectional areas within the appropriate range specified in table 3.

Terminals that cannot be checked by the gauges specified in figure 13 are tested by suitably shaped gauges having the same cross-section as those of the appropriate gauges given in figure Screws and nuts for clamping mechanical strength. NOTE Provisionally, strength. Compliance is checked by inspection, measurement requirements of In addition to the undergone changes after the test that I. NOTE - These requirements do not preclude terminals that are floating or terminals so designed that rotation displacement of the terminal is prevented by the clamping screw or IWt, provided that their movement appropriately limited and does not impair the correct operation of the accessory.

Terminals may be prevented from working loose by fixing with two screws, that there is no appreciable play, or by other suitable means.

Covering with sealing compound without other means of locking is not deemed to be sufficient. Compliance is checked by inspection applied to three separate terminals.

Verification is made successively with conductors of the largest and smallest cross-sectional areas specified in table 3, using class 1 or class 2 conductors for terminals of socket-outlets or appliance inlets and class 5 conductors for terminals of plugs or connectors.

Each conductor is subjected to a pull according to the value in table , exerted in the opposite direction to that in which the conductor was inserted. The pull is applied without jerks for 1 min. The maximum length of the test conductor shall be 1 m.

During the test the conductor clamping unit. This lest is carried out first wi? The clamping screws or nuts are tightened with the torque according to table 15, unless the torque is specified by the manufacturer on the product or in an instruction sheet. The terminal is fastened to a conductor whose length is at least 75 mm longer than the height specified in table , and is secured rigidly in a vertical position simulating actual service conditions.

The free end of the cable is passed through a bushing of the size specified in table The bushing is attached to an arm, driven by a motor at a rate of approximately 9 rpm and for approximately revolutions, and in such a manner that the centre of the bushing is made to describe a circle in a horizontal plane see figure During the test the conductor. NOTE - If a buehing with the hole diameter given ie not adequate to accommodate conductor without binding, a bushing having the next Iargeat hole may be used.

Unless two screws capabilities. The requirement with regard to the risk of accidental contact between live parts and accessible metal parts does not apply to accessories having rated voltages not exceeding 50 V Compliance is checked by inspection and, where the risk of accidental parts and other metal parts is concerned, by the following test. An 8 mm length of insulation is removed from the end of a flexible conductor having a cross sectional area in the middle of the range specified in One wire of the stranded conductor is left free and the other wires are fully inserted into and clamped in the terminal.

The free wire is bent, without tearing the insulation back, in every possible direcfion, but without making sharp bends round barriers. The free wire of a conductor connected to a live terminal shall neither touch any metal part which is not a live part nor emerge from the enclosure, and that of a conductor connected to the earthing terminal shall not touch any live part.

NOTE If necessary,. Interlocks shall be linked with the operation of a switching device so that the plug can neither be withdrawn from the socket-outlet or connector while the contacts are alive, nor be inserted while the switching device is in the ON position. Pilot contacts of a socket-outlet or connector used for electrical interlock are permitted live when engaged or not engaged with the pilot contacts of the plug or appliance inlet.

Socket-outlets complementary The used. Mechanical switching devices for interlocked d. Compliance composition. The samples are suspended freely in a heating cabinet, ventilated temperature in the cabinet and the duration of the ageing test are: After the samples have been allowed to attain approximately room temperature, they are examined and shall show no crack visible to the naked eye, nor shall the material have become sticky or greasy. After the test, the samples standard.

If there is a the pans of plus g. These fixings and those which fix the enclosure shall not serve any other purpose except in the case whereby an internal earthing connection is established automatically and in a reliable way by such a fixing. Itshall not be possible for the user to alter the position of the earthing contact, or of the COrltaGt, if any, in relation to the means of non. In addition, when a plug or appliance inlet is fully engaged With the socket-outlet the lower degree of protection of the two accessories shall be ensured.

It shall not be possible for the plug to work out of the socket-outlet in normal use. Compliance is checked by inspection and by an installation cross-sectional area specified in table 3. It shall not be possible to remove these parts without the aid of a tool.

Polyvinyl chloride sheated cables are not excluded. The means for achieving total enclosure and that for ensuring the marked degree of protection, if any, shall be securely fixed to the socket-outlet. In addition, when a plug is completely engaged, the socket-outlet shall incorporate means for ensuring the marked degree of protection.

Lid springs, if any, shall be of corrosion-resistant material such as bronze, other suitable material adequately protected against corrosion. Socket-outlets, splashproof or up to and including IPX4 designed for only one mounting position may have provision for opening a drain-hole at least 5 mm in diameter or 20 mmz in area with a width of at least 3 mm which is effective when the socket-outlet is in the mounting position.

A drain-hole in the back of the enclosure of a socket-outlet, splashproof or up to and including IPX3 or IPX4 intended to be mounted on a vertical wall is deemed to be effective only if the design of the enclosure ensures a clearance of at Ieast 5 mm from the wall, or provides a drainage channel of at least the size specified. The construction of rewirable plugs and connectors shall be such that the conductors can be properly connected and the cores kept in place so that there is no risk of contact between them from the point of separation of the cores to the terminals, Accessories shall be so designed that they can only be reassembled correct relationship between the components as originally assembled.

It shall not be possible for the plug to work out of the connector in normal use. Where there is an attached cap which cannot be removed without the aid of a tool, then the plug shall also meet this requirement when that cap is correctly fitted.

It shall not be possible Compliance.

BS EN 60309-1:1999+A2:2012, IEC 60309-1:1999

In addition, they shall incorporate means for ensuring the marked degree of protection when in complete engagement with the complementary accessory.

NOTE - The marked degree of protection against may be achieved by means of e lid or cover. Plugs shall not have specific means to allow the plug to be wired to more than one connector or socket-outlet. Connectors shall not have specific means to allow the wiring of more than one plug or appliance inlet. Where there is an attached cap which cannot be removed without the aid of a tool, then the appliance inlets shall also meet this requirement when that cap is correctly fitted.

The tests are made on accessories fitted with the cables or conduits for which they are designed, screwed glands and fixing screws of enclosures and covers being tightened with a torque equal to two-thirds of that applied in the tests of Socket-outlets and connectors are tested with and also without the complementary accessory in engagement, the means for ensuring the required degree of protection against moisture being positioned as in normal use, Plugs and appliance.

When the first characteristic numeral is 5, category. The minimum Splashproof accessories are sprayed with water for 10 min by means of the spray apparatus shown in figure 3, which comprises a tube formed into a semicircle. The radius of the circle is mm or a multiple of mm and is as small as is compatible with the size and position of the sample.

During the test, the sample is turned about its vertical axis or moved transversally.

Immediately afterwards, the sample is subjected for 5 min to splashing in any directions by means of the splash apparatus shown in figure 4. Watertight accessories are immersed for 24 h in water at a temperature highest point of the sample being about 5 cm below the water level. Compliance is checked by the humidity treatment described in this subclause, followed immediately by the measurement of the insulation resistance and by the dielectric strength test specified in clause Cable entries, if any, are left open; if knock-outs are provided, one of them is opened.

Covers which can be removed without the aid of a tool are removed and subjected humidity treatment with the main part; spring lids are open during this treatment.

The temperature of the air, at all places where samples can be located, is maintained within 1 C of any convenient value T between 20 C and 30 C.

The samples. In order to achieve the specified conditions air within it and, in general, to use a cabinet. NOTE In most cases, the samples may be brought temperature for at least 4 h before the humidity treatment.

A relative humidity of sodium sulphate the air. Compliance is checked by the tests of 19,2 and 19,3, which are made immediately after the test of Accessories of The insulation NOTE The term body includes all accessible metal parts, metal foil in contact with the outer surface of external parts of insulating material, other than the engagement face of connectors and plugs, fixing screws of bases, enclosures and covers, external assembly screws and earthing terminals, if any.

Table 5 Insulation. Up to and including 50 over 50 up to and including over up to and including over 1 The insulation voltage operating voltage.

Iec 62262 pdf

Compliance is checked by testing any accessory complies with the relevant standard. The test position. The plug or connector is inserted a rate of 7,5 strokes per minute. The speed of insertion. The measurement of speed is made by recording the interval of time between insertion or separation of the main contacts and the insertion or separation of the earthing contact, relative to the distance.

The number of cycles is specified A stroke is an insertion A cycle is composed The samples current. Accessories having a rated operating voltage or rated current hgher for a. A new set of accessories is used for the second test. In all other cases, for two-pole accessories the selector switch C, connecting the metal support and the accessible metal parts to one of the poles of the supply, is operated after half the number of strokes; for three-pole accessories, the selector switch C is operated after one-third of the number of strokes and again after two-thirds of the number of strokes, so as to connect each pole in turn.

Iron-core inductors may be used, provided the current has substantially sinewave form. For the tests on three-pole accessories, three-core inductors are used. During the test, no sustained. After the test, the samples shall show no damage impairing holes for the plug contacts shall not show any serious damage.

Accessories shall withstand, without excessive wear or other electrical and thermal stresses occurring in normal use. This test is carried out by the same means as in clause 20 used in the manner clause: The samples are tested at a rated operating After each strokes,. The test is made using the connections operated as prescribed-in that clause.

Accessories without interlock which have been subjected wjth a number of cycles specjfjed in table 7. Accessories having a rated operating voltage or rated current higher for a.

The number of cycles is the sum of the on and off load of table 7. During the test, no sustained After the test, the samples no wear impairing no deterioration. The samples shall then withstand a dielectric strength test made in accordance with NQTE The humidity. Lid springs, if any, are tested by completely opening and closing the lid, the number of times the lid is opened being the same as the number of insertions of the plug specified in table 7.

IEC 60309-1:2012

NOTE This test may be combined. Compliance is checked by testing any accessory complies with the relevant standards. The test current. For the purpose Non-rewirable. For accessories having three or more poles, the test current during the test shall be passed through the phase contacts. If there is a neutral contact, a separate test shall be carried out passing the test current through the neutral contact and the nearest phase contact. A further separate test shall be carried and the nearest phase contact.

A current of 2 A shall be passed these tests. The temperature is determined by means of melting thermocouples which are so chosen and positioned temperature being determined.

The temperature.

IEC - Wikipedia

Plugs and connectors shall be provided with a cable anchorage such that the conductors are relieved from strain, including twisting, where they are connected to the terminals or terminations, and that their covering is protected from abrasion. Cable anchorages shall be so designed that the cable cannot touch accessible metal parts or internal metal parts, for example cable anchorage screws, if these are electrically connected to accessible metal parts, unless the accessible metal parts are connected to the internal earth terminal.

Compliance Accessories shall be provided with a flexible cable complying with IEC of one of the types specified in the following table, the nominal cross-sectional area being not less than the value shown. Table 9 Preferred. The nominal cross-sectional area of the earthing conductor and of the neutral conductor, if any, shall be at least equal to that of the phase conductors.

The pilot conductor, Compliance. If any one of the components is not in position in the accessory as provided, an instruction sheet shall be provided to identify the necessary parts and the method of assembly;. If a bell-mouthed opening is provided, the diameter diameter of the cable with the largest cross-sectional Helical metal springs, cable sleeves.

If a cable inlet is provided with a sleeve to prevent damage to the cable, insulating material and shall be smooth and free from burrs. Rewirable accessories are tested first with one and then with the other type of cable, complying with IEC , as specified in table The value for each of the approximate external diameters lower line specified in IEC for the overall diameter.

Conductors of the cable of rewirable accessories are introduced into the terminals, the terminal screws being tightened just sufficiently to prevent the conductors from easily changing their position. The cable anchorage is used in the normal way, clamping screws being tightened with a torque equal to two-thirds of that specified in After reassembly of the sample, with cable glands, if any, in position, the component parts shall fit snugly and it shall not be possible to push the cable into the sample to any appreciable extent.

The sample is fixed in the test apparatus the sample. The cable is then subjected times to a pull of the vaiue shown in the table below.

Immediately afterwards, folio wing table. During the tests, the cable shall not be damaged. After the tests, the cable shall not have been displaced by more than 2 mm. For rewirable accessories, the ends of the conductors shall not have moved noticeably in the terminals; for non-rewirable accessories, there shall be no break in the electrical connections.

For the measurement of the longitudinal displacement, a mark is made on the cable at a distance of approximately 2 cm from the end of the sample or the cable anchorage before starting the tests. If, for non-rewirable accessories, there is no definite end to the sample, an additional mark is made on the body of the sample. After the tests, the displacement anchorage is measured. Before starting the test of Annex gives guidance and description of test apparatus. The test apparatus is shown in figure 7.

It is intended that blows applied to samples in these tests will not strike mounting flanges or male contacts of appliance inlets. The test apparatus shall be adjusted to apply blows as they might occur in actual use and according to The first four blows are applied when the accessory is mounted as in normal use on a vertical board.

The pendulum shall be mounted so that it swings parallel to that board. The impact face of the pendulum shall be arranged so that when the pendulum hangs freely, the impact face just touches the side of the accessory. The point of contact shall be substantially at the geometric centre of the side face of the accessory, or the appropriate projections of that face. The pendulum is then raised, released and the blow applied. The accessory is then revolved 90 about an axis perpendicular to the mounting face and its relationship to the impact face corrected, if necessary.

A second blow is then applied. The same procedure being four. The fifth blow is applied with the plane of the pendulum perpendicular mounting board so that the pendulum strikes the sample at its furthermost mounting board.

The blows shall have an impact energy according. Lids on socket-outlets are left normally closed. Caps supplied with appliance inlets shall be fitted. Watertight accessories and those with a degree the relevant test specified in clause?

NOTE Small chips, cracks and dents which do not adversely affect the protection against electrical moisture are neglected. In case of doubts, appropriate tests of clauses 18 and 19 are carried out.

The free end of the cable, which is about 2,25 m long, is fixed to a wall at a height above the floor, as shown in figure 8. The sample is held so that the cable is horizontal and then it is allowed to fall on to a concrete floor.

This is done eight times, the cable being rotated through 45 at its fixing each time. After the test, the samples shall show no damage within particular, no part shall have become detached or loosened.

Watertight accessories and those with a degree the relevant test specified in clause The sample is fixed to the oscillating member of the apparatus so that, when this is at the middle of its travel, the axis of the fiexible cable, where it enters the sample, is vertical and passes through the axis of oscillation. The oscillating member is so positioned that the flexible cable makes the minimum lateral movement when the oscillating member of the test apparatus is moved over its full travel.

The cable table A current equal to the rated current of the accessory voltage between them being the rated voltage. The oscillating member is moved backwards and forwards through an angle of 90 45 on either side of the vertical , the number of flexings being 20 and the rate of flexing 60 per minute. The glands are then tightened by means of a suitable sRanner, the force shown in table 14 being applied to the spanner for ; rein, at a point 25 cm from the axis of the gland.

Table 14 Force. Compliance is cheoked by inspection and, for screws and nuts transmitting contact which are operated when connecting up the accessory, by the following test.

The screws or nuts are tightened ten times for screws. This removal and insertion of the screws or nuts shall be carried thread in the insulating material suffers no appreciable temperature. When testing terminal screws and nuts, a copper conductor having the largest cross-sectional area in table 3, rigid solid or stranded for socket-outlets and appliance inlets and flexible for plugs and connectors, is placed in the terminal.

The test is made by means of a suitable screwdriver or spanner. When a screw has a hexagonal head with means for tightening with a screwdriver and the values in columns II and Ill are different, the test is made twice, first applying the torque specified in column Ill to the hexagonal head and then, on another set of samples, applying the torque specified in column II by means of a screwdriver.

If the values in columns II and Ill are the same, only the test with the screwdriver is made. After the test for clamping screws or nuts, the clamping that adversely affect its further use. NOTE For mantle terminals,. For mantle terminals in which the nut is tightened by means other than a screwdriver screw diameter is over 10 mm, the value of the torque IS under consideration. Screws or nuts which are operated when connecting up the accessory include terminal screws or nuts, assembly screws, screws for fixing covers, etc.

NOTE The requirement with regard to correct is prevented, for example by guiding the screw use of a screw with the leading thread removed. Springs ensuring the resiliency of contact adequately protected against corrosion.

Creepage distances, clearances and distances less than the values in millimetres shown in table For rewirable accessories, the measurements are made on the sample fitted with conductors of the largest cross-sectional area specified in table 3, and also without conductors. For nonrewirable accessories, the measurements are made on the sample as delivered.

Socket-outlets plug. The surface on which the base of a socket-outlet is mounted includes any surface with which the base is in contact when the socket-outlet is installed. If the base is provided with a metal plate at the back, this plate is not regarded as the mounting surface. They shall not undergo any change impairing their further flow to such an extent that live parts are exposed.

The surface of the part to be tested is placed in the horizontal diameter is pressed against this surface by a force of 20 N. The test is made in a heating.

After 1 h, the ball is removed and the diameter of the impression which show deformation, this diameter shall not exceed 2 mm.

NOTE For elastomeric. Compliance is checked specifications. The test apparatus. NOTE - Tests are not made on glands and sealing. The tip of the glow-wire. The tip is applied to flat surfaces and not to grooves, knock-outs, narrow recesses or sharp edges and if possible not less than 9 mm from the edges of the accessories.

The movement of the tip of the glow-wire into the accessory shall be mechanically limited to 7 mm. The test is made on one specimen.

In case of doubt regarding repeated with two further specimens. The accessories. There shall be no permanent ignition of the tissue paper. Two electrodes of platinum or other sufficiently non-corrosive material, with the dimensions shown in figure 12, are placed on the surface of the sample in the manner shown in that figure, so that the rounded edges are in contact with the sample over their whole length.

The force exerted on the surface. The electrodes are connected to a 50 Hz supply source having a voltage of V, of substantially sine- wave form. An overcurrent relay, with a tripping time of at least 0,5s, is included in the circuit.

The solution has a volume resistivify of G! NOTE Care is taken that the electrodes started. In case of doubt, the test is repeated A revision. For specific conditions and the provisions for these conditions, special consideration given to the product by the manufacturer with regard to resistance to corrosion. All grease is removed from the parts to be tested, by immersion in carbon-tetrachloride, trichloroethane or an equivalent decreasing agent for 10 min.

NOTE Traces. For small helical springs and the like, and for inaccessible parts exposed to abrasion, a layer of grease may provide sufficient protection against rusting. Such parts are subjected to the test only if there is doubt about the effectiveness of the grease film and the test is then made without previous removal of the grease.

Compliance is checked by testing each socket-outlet and mating complementary socket-outlet and mating plug complying with this standard. The test is applied to a new socket-outlet and mating connected according to the indications of Different numbers of poles for the same considered as representative of the type.

The short-circuit protective device shall be a gG type fuse for general application with the requirements of IEC and IEC and having ratings identical the socket-outlets and mating plugs. In case a fuse with a rated current equal to that of the socket-outlets and mating tested does not exist, a fuse having the next higher rated value shall be used.

Fuse technical. The test voltage shall be identical mating plugs tested. No power-factor The following. The supply S feeds a circuit including test.

In all cases, characteristics. In each test circuit figures 16, 17 and 18 , the resistors and reactors are inserted the supply source S and the equipment D under test. There shall be one and only one point of the test circuit which is earthed; this may be the short-circuit link of the test circuit of the neutral point of the supply or any other convenient point.

The connection of the accessories under test shall be made with copper wires having crosssectional areas as indicated in table 3, and lengths as short as possible, not exceeding 1 m on either side. The calibration of the test circuit is carried out by placing temporary connections B of negligible impedance as close as reasonably possible to the terminals provided for connecting the accessories under test.

Test procedure. Temporary connections B are replaced by the accessories under test. The circuit is closed on a value of the prospective current at least equal to the conditional short-circuit withstand current of the accessories under test.

There shall be neither arcing nor flashover between circuit fuse of the exposed conductive parts F2.

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