|
|
如题， 22.110 该如何理解？ 
1 h0 a! n: X1 y0 ^& U6 n1 ~# P# }5 A3 ^8 M0 x5 ^! ]
22.110 Non-self-resetting thermal cut-outs designed to be replaced after their operation! R5 S9 n) t) {6 h) ~) b' V* c! ^
shall open the circuit in the intended manner without short-circuiting live parts of different
3 b3 E0 q1 {/ n. ~9 S+ {1 X. Qpotential and without causing live parts to come into contact with the enclosure.
7 B, J |7 n2 L ^; h1 SCompliance is checked by the following test.
$ w* {$ f1 L9 }The appliance is operated five times, each time with a new non-self-resetting thermal cutout,+ U, k$ T; S3 i
any other thermally operated control devices being short-circuited.: K; L. ?) H8 s
Each time, the thermal cut-out shall operate appropriately.
% |7 i- b% U) y+ n5 `5 t8 C1 y& HDuring the test, the enclosure of the appliance is connected to earth through a 3 A fuse; this4 i4 f: i% u- U/ F
fuse shall not blow.; M: b6 T) x/ h" p2 x& C1 k! _
After this test, the supplementary heating elements shall withstand an electric strength test as
8 U z( C, g4 \6 @% O+ B9 u; Xspecified in 16.3.
( Y1 D5 O; [ l |
|
/1 
|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 2014-7-16 18:14
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡