|
20.11.3 Lampholder contact shall be reliably secured in the lampholder body by means other" q: ?3 A: e$ C' \; d
than friction to avoid such a displacement of the lampholder contacts that live parts of the
- @$ [1 y+ q6 o) q; w$ b; _chain become accessible. An example of an adequate securing method is by the provision of) ~1 r- ?# i+ o0 h
ears on the contacts of the lampholder.
2 d# ^; H: X6 p2 nCompliance shall be checked by inspection and by the following test.
/ n, K; F& P& p; |$ dSix lampholders are heated for 7 h according to the requirements of clause 12.3 of section 12 of# E2 e9 X9 l* }
IEC 60598-1 in an orientation to reach the highest temperature. After the lampholders have
' n3 t/ m% \4 gcooled down to room temperature, the incandescent lamps are removed and a force of 15 N is: E& H/ a \* l4 e8 v$ G
applied for 1 min to each of the conductors connected. Following this, a force of 30 N is applied
, {7 N/ o/ t, @% s" Ufor 1 min to the two conductors together. The forces are applied at a distance of 3 ± 0,8 mm9 a/ c; V* ~9 t, Y6 i
from the insertion points in the lampholder so as to try to move the contacts from the) C) F4 ?" e3 f0 A( R$ ?0 f
lampholders.9 [3 c3 Q& V5 H3 W e8 A( w4 i* J
During the test the contacts shall not move more than 0,8 mm. An example of a device suitable
( }4 j" K* I0 ~# b& cfor this test is shown in figure 2.
. U3 T" {* n. S
1 y2 [; K* c, x# |* b0 Q- I j# ~些段中要求的温度是多少? |
|