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47.2.3 Dry operation
+ u/ B- Y K9 c5 M! o. Z- L, x: Z47.2.3.1 The appliance shall be tested as follows, with all temperature controls or protective devices
. a& |0 o0 B4 K( ?" zshunted out of the circuit, except as noted in 33.1.18.
3 b. P, r3 y: {2 `1 Y; Ya) An appliance that incorporates a device to limit temperatures shall be tested in accordance! y$ E4 c- l& U
with 47.2.3.3.
& ?- M' @8 q" c% |: Mb) An appliance that does not incorporate a device to limit temperatures shall be tested in
8 B4 T* e- u8 s9 Zaccordance with 47.2.3.4.
/ A% b, m" s/ t# N+ ?1 \% u- S7 z! X9 O/ y5 c# Q
n& N/ w1 J$ J0 T33.1.18 An automatic temperature-regulating or -limiting control or other protective device provided as a
; M2 s, L+ ?/ x3 @. q5 _part of an appliance is to be shunted out of the circuit, unless the device is suitable for the application as% a' m, k( ?# V o3 [) H
required by 49.2.1 and the control is unlikely to be defeated by the user.
2 G1 t3 y# A% @5 Z# b+ S! u' C
8 b, S% r- z& o& [7 |49.2.1 A thermostat shall be capable of withstanding an endurance test which shall consist of the number1 Y* L/ y: f: ? G: e
of cycles indicated in Table 49.1. Unless it is specified that the test be made without load, the thermostat
/ e; F. Z/ ]' u+ T0 z- Q. {* Ushall make and break the rated current of the appliance while connected to a circuit of rated voltage. There
; _7 k6 a* Y* S2 W8 J4 }shall be neither electrical nor mechanical malfunction of the thermostat, nor undue burning, pitting, or w3 p9 x9 w, Z+ N
welding of the contacts.
& s2 V$ y: x0 ?0 ?/ C `3 z% n
; ]! P2 f, l; I- @( M+ [如果有一个Percolator(渗滤式咖啡壶)里面有一个thermostat和一个fuse，thermostat可以过了49.2.1，那要不要短路thermostat做非正常测试？？
3 X7 ^# C0 A* r1 P- I' X还是根据其他条款做非正常测试？ |
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