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22.7 Replacement:
8 Y, o. B/ U, [ t1 Q3 \; RAppliances having a steam bath function shall incorporate adequate safeguards against the) e' v5 j0 l4 d! Z2 R1 k
risk of excessive pressure.) Z2 i& z$ N5 B5 n& @. R
8 L x; s$ l; @& m; N7 Y8 F+ SIf jets of steam or hot water are emitted through protective devices, the electrical insulation
. B; \+ m% ~! xshall not be affected or the user exposed to a hazard.
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+ B3 J8 @" I$ T. d8 jCompliance is checked by inspection and by the following test.
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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
6 ?; N; t2 c6 {# F: K; Y' nboiler filled but without steam emission is measured. All pressure-regulating devices$ C7 z. Z6 I+ S9 P2 |! Z& ~
that operated during the test are rendered inoperative and the pressure measured again. The
7 U3 \- u5 l, b/ K6 g; Wpressure shall not increase by more than 200 kPa.
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Any pressure-limiting protective device is then rendered inoperative and the pressure in
! w f, G. l0 ~5 Z6 U" ]8 C& @; ethe boiler is raised hydraulically to five times the pressure measured originally or twice the8 R: R7 P7 s2 ]2 s( h/ ~
pressure measured with the pressure-regulating device operating during the test of Clause 11
+ l9 e9 p7 Q' F' |$ K4 X. u4 g Wrendered 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?9 F: O6 q2 k* v4 I
什么叫做是non-pressurized boilers; pressurized boilers 它们的定义是什么啊?
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8 k4 t9 L' L. t0 M% f万分感激! |
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