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47.2.3 Dry operation
% D: M# W+ T4 b" {8 C& R47.2.3.1 The appliance shall be tested as follows, with all temperature controls or protective devices
5 z. y* ]% o% `! jshunted out of the circuit, except as noted in 33.1.18.
/ n5 o$ d4 B i; ~$ q6 ~" h& Ja) An appliance that incorporates a device to limit temperatures shall be tested in accordance7 n9 [% ~7 o$ {5 L" {
with 47.2.3.3.
$ G! {% X+ d) g* p) Cb) An appliance that does not incorporate a device to limit temperatures shall be tested in, i/ ]/ ]$ r0 b' Y
accordance with 47.2.3.4.
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33.1.18 An automatic temperature-regulating or -limiting control or other protective device provided as a
) V/ m- J. r' fpart of an appliance is to be shunted out of the circuit, unless the device is suitable for the application as
" J0 M% J' k1 srequired by 49.2.1 and the control is unlikely to be defeated by the user.
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9 z( F7 ~, V. f5 [3 Z49.2.1 A thermostat shall be capable of withstanding an endurance test which shall consist of the number
) l- l$ k$ M6 V1 U: Uof cycles indicated in Table 49.1. Unless it is specified that the test be made without load, the thermostat7 N+ y0 Z, [$ N( J0 M9 L
shall make and break the rated current of the appliance while connected to a circuit of rated voltage. There* R/ v( E a- C! Z, R
shall be neither electrical nor mechanical malfunction of the thermostat, nor undue burning, pitting, or
4 K) ^% S6 B* N% Wwelding of the contacts.% x( Q+ U* L1 L7 w$ C; m
* m# i" Z, c6 x9 `3 N! z* X! N% j" k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??0 R' t. J. ~' @8 ]
还是根据其他条款做非正常测试? |
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