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22.7 Replacement:
) n, D" b; |* \Appliances having a steam bath function shall incorporate adequate safeguards against the& A! Y+ g5 @6 O1 x# e+ C
risk of excessive pressure.% W: k1 V+ c- J) q5 U1 F5 D1 m
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If jets of steam or hot water are emitted through protective devices, the electrical insulation
' ^8 k- M$ R1 F. Q; m/ Q, dshall not be affected or the user exposed to a hazard.& h' [& u. Y. b
9 r! C* G" @" h8 b+ I$ s, }, ~Compliance is checked by inspection and by the following test./ h5 f ~& b+ P: _9 w& j
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For non-pressurized boilers, the water shall be supplied at a pressure not exceeding 150 kPa.
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For pressurized boilers, the maximum pressure occurring during the test of Clause 11 with the; u- g5 x! M! h8 z I+ I" U
boiler filled but without steam emission is measured. All pressure-regulating devices
4 b8 e0 V$ W* s' V: Nthat operated during the test are rendered inoperative and the pressure measured again. The/ _- v) N* q; M; D2 D
pressure shall not increase by more than 200 kPa.
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0 w+ E) E( z9 O8 X; G+ S& OAny pressure-limiting protective device is then rendered inoperative and the pressure in8 x1 j5 ~# a" K* |. \ Y! @
the boiler is raised hydraulically to five times the pressure measured originally or twice the
, Q( ]' W. G& x( f6 U, F }0 Z) B8 kpressure measured with the pressure-regulating device operating during the test of Clause 11# }9 o3 {) {9 W: X7 _
rendered 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?. C, W3 ^# M J: n9 Z9 f) |& E
什么叫做是non-pressurized boilers; pressurized boilers 它们的定义是什么啊?
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" Z. U- o! R! h6 I- k! q1 _: A万分感激! |
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