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|  DSH 496
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| Heat/fire/tracking% d! ^$ v4 d& @" M0 x |
| 30.1/ M; B# h+ a6 y8 b1 Y& c4 x7 O
| 60335-1(ed.3)
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0 E5 `* R2 ?' [) I% l& QStandard: IEC 60335-1:1991, 3rd Ed.) r% c) ?+ m* C
Sub clause: 30.1
/ G9 d0 G3 s, U1 [7 f: iSheet No. DSH-496
8 q0 ~! m q* ^( \- S4 RSubject:
% C1 M4 ~3 e3 a% SHeat/fire/tracking
2 X3 A) w" ~5 _. `5 e/ E1 d+ aKey words: - Ball-pressure test
5 a& q9 Q5 v1 @7 g g/ ODecision taken at 40th CTL meeting.
3 i9 e5 w% E4 d9 y( CQuestion:0 f5 y4 V% j# Q( {; H3 d. h
What is the applicability of the ball-pressure test to parts of insulating material supporting live parts?/ b1 u8 s$ {) J- x; u+ G
Rationale:) b8 G( S5 c4 x" ^ C
See question.' Z0 {5 W9 j3 Q, C. s H
Decision:
$ Z. z$ s7 j7 G9 r. e, AFor parts of insulating material covering live parts which occasionally are in contact with live parts of different potential, the ball-pressure test is carried out at 75 deg C.
8 x( Q+ v) S$ mFor parts of insulating material like the insulation covering snap-on connectors, only the glow-wire test is carried out.
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发表于 2012-9-9 23:06
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