AS/NZS 3123:2005 pdf – Approval and test specification-Plugs,socket-outlets and couplers for general industrial application

AS/NZS 3123:2005 pdf – Approval and test specification-Plugs,socket-outlets and couplers for general industrial application.
24 MECHANICAL STRENGTH
24.1 General
Accessories shall have adequate mechanical strength.
Compliance is checked by the appropriate tests of Clauses 24.2 to 24.5 as follows:
(a) For socket-outlets and appliance inlets Clause 24.2.
(b) For rewireable plugs and connectors Clause 24.3.
(c) For non-rewireable plugs and connectors Clauses 24.3 and 24.4.
(d) For glands of accessories wit/i an IP classification Clause 24.5.
Before starting the tests of Clause 24.2 or 24.3, accessories with enclosures of resilient or thermoplastic material are placed wit/i their bases or flexible cables, in a refrigerator at a temperature of —15 ±2°C/br at least 16 h. They are then removed from the refrigerator and immediate/v subjected to the tests of Clause 24.2 or 24. 3. as appropriate.
242 Impact hammer test for socket-outlets and appliance inlets
Socket-outlets and appliance inlets shall be subjected to, and shall comply with, the mechanical strength tests of AS/NZS 60335.1.
In addition, protected accessories with an IF classification shall withstand the relevant treatment specified in Clause 18.
24.3 Tests for plugs and connectors
Rewireable accessories are /Iued with the lightest type of/lexible cable of the smallest cross—sectional area specified in Clause 23. 4.
Non—rew,reah!e accessories are tested as delivered.
The free end of the cable, which is about 2.25 in long, is fixed to a wall at a lie 1gb! of 750 mum above the floor, as shown in Figure 5.
The sample is held so that the cable is horizontal and then it is allowed to fall onto a concrete /loor. This is done eight times, the cable being rotated through 45° at its /ixing each time.
Socket-outlets and connectors are checked when in engagement with a plug and alsowithout a plug.
NOTES:
l The contribution to the creepage distance of any groove less than I mm wide is limited to its
width.
2 Any air gap less than 1 mm wide is ignored when computing the total clearance.
3 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 metalplate at the back, this plate is not regarded as the mounting surface.
26.2 Sealing compound
Sealing compound shall not protrude above the edge of the cavity in which it is contained.Compliance is checked by inspection.
27 RESISTANCE TO HEAT,FIRE AND TRACKING
27.1 Determination of ignitability and combustion propagation*
This test shall be carried out in accordance with the provisions for the determination ofignitability and combustion propagation of AS/NZS 3100.For socket-outlets and applianceinlets the (a) and (b) temperatures of the test shall be 750°C for 30 s and for plugs amconnectors the (a) and (b) temperatures shall be 650°C for 30 s.