|
60335-2-49,CL22.101 有如下要求:
9 C$ ?/ ?& n' o8 QFor three-phase appliances, thermal cut-outs protecting circuits with heating elements, and
% L" s8 N @9 c# F0 ^those for motors of which the unexpected starting may cause a hazard, shall be of the
+ o0 |# ~0 ~& f7 E; x0 \2 D/ ?non-self-resetting and trip-free type, and shall provide all-pole disconnection from related7 X8 ^" E7 z4 U
supply circuits.
- F1 P1 \9 }8 ^" HFor single-phase appliances and for single-phase heating elements and/or motors connected" B5 _4 p& g+ c5 m3 a0 H
between one phase and neutral or between phase and phase, thermal cut-outs protecting$ F+ k, u* e& ~$ N
circuits with heating elements, and those for motors of which the unexpected starting may( B J6 ~& X3 J$ R
cause a hazard, shall be of the non-self-resetting and trip-free type, and shall provide at least
" \$ }) l. O- s' r5 Gone-pole disconnection.
5 F) E0 ~! @, F8 U6 A; eIf the non-self-resetting thermal cut-out is only accessible after removing parts with the aid
+ I! b9 B! j/ Gof a tool, the trip-free type is not required.# r4 H* g; }, L7 P M* h
NOTE 1 Thermal cut-outs of the trip-free type have an automatic action, with a reset actuating member, so constructed that the automatic action is independent of manipulation or position of the reset mechanism.
- v7 k u. c7 |, V7 v; }, z. U[u]Thermal cut-outs of the bulb and capillary type that operate during the tests of Clause 19 | shall be such that rupture of the capillary tube shall not impair compliance with the | requirements of 19.13. | Compliance is checked by inspection, by manual test and by rupturing the capillary tube. | NOTE 2 Care must be taken to ensure that the rupture does not seal the capillary tube. |
0 V" k+ S o* Y( l* t
/ @' \- d+ W" ?2 _我想请教的就是上面红底字。这个实验如何做?割开毛细管的温控器,是割开探头部分(粗点),还是割开毛细管(细点)部分?割开以后,里面的传导介质流失掉,限温器还能起什么作用?做60335-1的CL19.5时候,就相当于干烧了,要符合CL19.3的要求,如果干烧符合要求,还加限温器做什么?' O4 v/ _1 x0 t, k) s6 @
( T/ t- W+ [ l3 S1 b D
请大家说说 |
|