DSH 108 Screws and connections

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DSH 108 $ N4 R- d+ w) l5 Y4 i+ n5 A( d . ]2 ~( e" J% v0 W* b; G) X

Screws and connections 0 u, h/ I# g7 m& j) f/ K+ `

28.1 ) Q  V& c- F! ]) V2 K$ L- R

60335-1(ed.3) + o  z# M* z! \( [2 A5 X$ ]

- D# C! H7 C; SStandard:
IEC 60335-1: 3rd ed. 1991
+ e. h, V' {/ I* z3 C$ ~: nSub clause: 28.1 Sheet n°: 108
Subject: Screws and connections Key words:
- `5 K% p3 V% h4 T9 M4 g- screws in engagement in insulating material
! O/ }; [1 _6 f! w7 Z  P0 hDecision of: 23rd CTL meeting to be reaffirmed at 39th meeting.
Question:
Shall the torque test on screws, where the screws thread into insulating material, be carried
out 10 times consecutively or with a pause between each time?
4 k- x, x$ r- }+ W9 fDecision:
/ ?4 ~) W% x# y) `The test should be performed with a pause between each time for adequate cooling time
: j& s) j/ \+ q' Vbetween each torque test
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