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22.7 Replacement:0 B2 K6 O4 m' P! D! @, X, ?4 b6 v
Appliances having a steam bath function shall incorporate adequate safeguards against the
5 b0 o. q& v8 E3 |( S* l4 Orisk of excessive pressure.# r& u0 h, i4 ]2 H
) \$ `) x$ [- oIf jets of steam or hot water are emitted through protective devices, the electrical insulation3 j6 O" r# |3 z5 J' l% |
shall not be affected or the user exposed to a hazard. Z* N, y8 C' z: Y, X
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Compliance is checked by inspection and by the following test.( O! K& j7 e8 I" b7 X: t0 D4 m+ G) M+ g
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For non-pressurized boilers, the water shall be supplied at a pressure not exceeding 150 kPa.
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% h2 j9 ]' C/ m. c2 x( ^For pressurized boilers, the maximum pressure occurring during the test of Clause 11 with the
+ `1 u# `8 U B0 Aboiler filled but without steam emission is measured. All pressure-regulating devices
) F b' ~: E6 x6 ` g+ q# ythat operated during the test are rendered inoperative and the pressure measured again. The
2 o& K5 ^: O7 g0 Dpressure shall not increase by more than 200 kPa., f _ V& n8 M- P& B' {
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Any pressure-limiting protective device is then rendered inoperative and the pressure in8 a: B# Q' a5 _* y' y9 n9 {+ J! s7 D ~
the boiler is raised hydraulically to five times the pressure measured originally or twice the
6 @4 c1 ^' p3 g% R7 Qpressure measured with the pressure-regulating device operating during the test of Clause 11
: P; J+ j4 i' ~" G) Yrendered inoperative, whichever is higher. There shall be no leakage from the boiler.
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请教有哪位大侠做过EN60335-2-105的22.7这个章节的测试?能否帮讲解一下这个测试怎么做,如何去理解这个条款?2 z* k0 u5 a( t6 [. n2 J5 j3 W
什么叫做是non-pressurized boilers; pressurized boilers 它们的定义是什么啊?
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万分感激! |
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