Download 13 A Plugs, Socket-outlets and Adaptors: Specification for by British Standards Institution PDF

By British Standards Institution

ISBN-10: 058022306X

ISBN-13: 9780580223068

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Extra info for 13 A Plugs, Socket-outlets and Adaptors: Specification for 13 A Switched and Unswitched Socket-outlets BS 1363

Example text

Dotted lines show additional connections when gauge body is made from insulating material. The figure shows a typical test apparatus and is not intended to be specific. Figure 13 — Test apparatus and circuit for use with contact and non-contact gauges (see Clause 13) --`,,`-`-`,,`,,`,`,,`--- 45 © BSI 9 October 2003 Copyright British Standards Institution Provided by IHS under license with BSI No reproduction or networking permitted without license from IHS Not for Resale BS 1363-2:1995 --`,,`-`-`,,`,,`,`,,`--- All linear dimensions are in millimetres.

The calibration voltage is applied to the resistor when checking the temperature rise of a socket-outlet. 1. 5 If the associated clearance is less than 3 mm, the minimum groove width may be reduced to one third of this clearance. The methods of measuring creepage distances and clearances are indicated in the following Examples 1 to 11. These cases do not differentiate between gaps and grooves or between types of insulation. The following assumptions are made: — any recess is assumed to be bridged with an insulating link having a length equal to the specified width X and being placed in the most unfavourable position (see Example 3); — where the distance across a groove is equal to or larger than the specified width X, the creepage distance is measured along the contours of the groove (see Example 2); — creepage distances and clearances measured between parts which can assume different positions in relation to each other, are measured when these parts are in their most unfavourable position.

1 Compliance shall be checked by inspection and, for screws and nuts which are intended to be tightened during installation, or use, or during replacement of a fuse link by the following test. The screw is tightened and loosened as follows: a) 10 times for screws in engagement with a thread of insulating material, the screw being completely removed and replaced each time; b) five times for nuts and other screws. 5 mm2 solid conductor is placed in the terminal in the case of fixed socket-outlets.

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