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22.7 Replacement:
6 s; P0 \+ ^0 PAppliances having a steam bath function shall incorporate adequate safeguards against the
0 I" w( w; N+ Y2 Erisk of excessive pressure./ [1 I/ b/ O2 E% Y) l
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If jets of steam or hot water are emitted through protective devices, the electrical insulation
% t6 g# D% o* p. Z; E1 G& Z X# Vshall not be affected or the user exposed to a hazard.
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( I& g4 y3 o6 f/ f' @Compliance is checked by inspection and by the following test.' d z- m3 W% P; q h/ o
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For non-pressurized boilers, the water shall be supplied at a pressure not exceeding 150 kPa.) a) C v2 f- Y/ |3 R7 g
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For pressurized boilers, the maximum pressure occurring during the test of Clause 11 with the
: m& |( d6 n9 @ z" V+ iboiler filled but without steam emission is measured. All pressure-regulating devices. v( m5 O, B% j
that operated during the test are rendered inoperative and the pressure measured again. The4 H5 [3 I9 | v) ^
pressure shall not increase by more than 200 kPa., C0 ^. ]1 `8 w. ?8 s8 m+ }
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Any pressure-limiting protective device is then rendered inoperative and the pressure in* W8 v0 C- @9 G
the boiler is raised hydraulically to five times the pressure measured originally or twice the
1 @# x& [7 Q; Cpressure measured with the pressure-regulating device operating during the test of Clause 11
) R }$ K7 r# Z" ^0 h* f! wrendered inoperative, whichever is higher. There shall be no leakage from the boiler.! V9 I& J! r' c. G# b
6 [6 ]8 a! M- C5 o) @2 p3 S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?
* `/ s- V/ i: O什么叫做是non-pressurized boilers; pressurized boilers 它们的定义是什么啊?
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, p% M ^& }% r0 p7 t万分感激! |
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