IEC 60309-4 pdf free download

IEC 60309-4 pdf free download.Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes – Part 4: Switched socket-outlets with or without interlock.
8.1 Add the following after the first paragraph:
Switched socket-outlets according to 6.401 with degree of protection higher than 1P44 and different from lP67, shall use socket-outlets that comply with construction as stated in standard sheet 2-I (continuation 2) or 2-Ill (continuation 2) or 2-VIll (continuation 2).
9 Protection against electric shock
Replacement of Clause 9 of IEC 60309-1:2021 or of IEC 60309-2:2021 by the following:
9.1
9.1.1 The enclosure shall be designed so that live parts are not accessible when in normal use and when parts which can be removed without the aid of a tool have been removed.
Compliance is checked by inspection and, if necessary, by the tests of 9.1.2 to 9.1.4.
9.1.2 The standard test finger according to IEC 61032, Probe B is applied with a force of
10 N ± 1 N in every possible position. An electrical indicator with a voltage not less than 40 V and not more than 50 V is used to show contact with the relevant part.
9.1.3 For elastomeric or thermoplastic enclosures, the following test is made at an ambient temperature of 35 °C ± 2 °C, the products being at this temperature.
During this test, the parts of elastomeric or thermoplastic material of the products are subjected for 1 mm 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. This finger, with an electrical indicator as described above, is applied to all places where yielding of the insulating material could impair the safety of the product.
During this test, the product shall not deform to such an extent that live parts become accessible.
9.1.4 The test probe Dot IEC 61032 is applied with a force of 1 N.
This test does not apply to the components fitted to the product.
The test wire is provided with an electrical indicator, with a voltage not less than 40 V and not more than 50 V, to show contact with the relevant part.
The protection is satisfactory if the wire cannot enter the enclosure, or if it enters, it does not touch live parts inside the enclosure.
9.2 Parts providing protection against electric shock shall have adequate mechanical strength and shall be reliably secured by means of screws or in a similar reliable manner so that they will not loosen in normal use.
Compliance is checked by inspection and by the tests of Clause 24 and Clause 25.
9.3 Knobs, operating levers, push-buttons, rockers and the like, for operating switches in switched socket-outlets shall be of insulating material, unless their accessible metal parts are separated from the metal parts of the mechanism by double insulation or reinforced insulation, or they are reliably connected to earth.
Compliance is checked by inspection and by the tests of Clause 19 and Clause 22.
12 Interlocks, switches and their components
12.1 Switched socket-outlets with interlocks shall be so constructed that a plug or appliance inlet cannot be completely withdrawn from the socket-outlet while the contacts of that socket- outlet are live, and the contacts of the socket-outlet cannot be made live until a plug or appliance inlet is in proper engagement. The contacts shall not open or close on load.
A pilot contact in a switched socket-outlet (interlocked or non-interlocked) may be live when not engaged with a male pilot contact if the female contact is part of a SELV circuit or if it is not accessible with the standard test finger according to IEC 61032, Probe B.
NOTE SELV is defined in IEC 603644411.
Socket-outlets shall be so designed that, after engagement with a complementary accessory, the interlock operates correctly.
The operation of an interlock shall not be impaired by normal wear of the portion of the plug or appliance inlet used for interlocking.
Compliance is checked by carrying out the tests of 12.2 or 12.3 as applicable after the test of Clause 21.IEC 60309-4  pdf download.