|
|
22.7 Replacement:
+ \2 a4 p9 F0 c9 a% h9 MAppliances having a steam bath function shall incorporate adequate safeguards against the
/ ] g* p0 ]. zrisk of excessive pressure.7 d' E/ X+ d* J) C& e9 _ v; M: ~
- ]% ], n, B: g. B: q5 a
If jets of steam or hot water are emitted through protective devices, the electrical insulation+ @: x7 k0 S4 Z( a4 u2 @: U9 h$ v
shall not be affected or the user exposed to a hazard.
7 X+ \8 r) w( D( F/ W" k/ c) y. S; J
Compliance is checked by inspection and by the following test.! h& Y! X5 N3 ~, C4 ^5 T' h9 ?
2 C% J3 G1 C" x2 y% r
For non-pressurized boilers, the water shall be supplied at a pressure not exceeding 150 kPa.
8 Y* i1 u8 z; v: Y2 ?
9 U5 p( J: O( k8 F* I. V1 U1 }' ?! ZFor pressurized boilers, the maximum pressure occurring during the test of Clause 11 with the
7 x& u1 s) L7 l c/ G: A' {boiler filled but without steam emission is measured. All pressure-regulating devices
8 ~& v% o0 ~$ D" l! c9 M$ e1 cthat operated during the test are rendered inoperative and the pressure measured again. The( x3 a3 O3 E) J6 G& O7 R! S
pressure shall not increase by more than 200 kPa.5 l! K2 s: m9 D
' ?6 O: E) e* D WAny pressure-limiting protective device is then rendered inoperative and the pressure in
2 {) }! B' Y S% {/ G b1 ythe boiler is raised hydraulically to five times the pressure measured originally or twice the
/ Z& s) C9 k7 z0 o) s$ jpressure measured with the pressure-regulating device operating during the test of Clause 11
. L7 Q+ X$ |) w3 X4 Trendered inoperative, whichever is higher. There shall be no leakage from the boiler.6 T, U( { l, d3 v- ]5 s
& P% ^/ |4 d9 N0 a7 C6 u! C+ ^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?0 A, B6 t8 G" K0 l; C% t
什么叫做是non-pressurized boilers; pressurized boilers 它们的定义是什么啊?
7 d, O/ `' f- q* F( ?9 i# C4 U3 ]& a
: o# e* t# W' a! u( G万分感激! |
|
/2 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2008-12-5 10:21
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡