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|  DSH 108% P. W9 H2 ~, W5 z1 e
& S. _+ u& c' r4 _3 C4 r
| Screws and connections
4 d$ K3 U+ ~; I' h7 r | 28.1- C1 F2 r# [( \" k4 A2 z i
| 60335-1(ed.3)1 l% }/ ~; r0 w+ O
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Standard:
1 p& g" H/ X0 t. V" GIEC 60335-1: 3rd ed. 1991
0 u% |6 g! ~+ P i2 U, WSub clause: 28.1 Sheet n°: 108
" B! i6 A9 Y+ B. ]Subject: Screws and connections Key words:
. ] m- r4 G% c' I$ g- screws in engagement in insulating material
+ G; }' k2 t0 B4 d+ S; gDecision of: 23rd CTL meeting to be reaffirmed at 39th meeting." ?- P+ d+ ?. J s8 B7 V- S, N/ ~& Q
Question:1 A. O [- r5 s/ g+ g
Shall the torque test on screws, where the screws thread into insulating material, be carried
Z) l, C7 g; H, Lout 10 times consecutively or with a pause between each time?! V. S" k/ g3 S/ P' R v
Decision:
, k" K8 Q2 A* l2 K9 }The test should be performed with a pause between each time for adequate cooling time- h! a& `8 T; S: T7 g2 K4 s
between each torque test
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6 d1 y, z8 ]/ @$ |5 S
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发表于 2012-9-14 14:05
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