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参照下面61558,请问
( c! m/ b8 {, U变压器的输出connector(见图片), glow-wire test(灼热丝测试) 要做多少温度?" y% M+ f: u" M& q C
变压器输出24VAC 0.25A; q; _/ f% y7 \9 n6 h" b
& h3 y( `' ]0 T$ P1 j( q4 \$ G/ a
; s0 @1 ]# |2 \3 O2 d: K27.3.1 External accessible parts& }1 D9 K: o8 b' n
External parts of insulating materials shall be resistant to ignition and spread of fire.5 v6 Q4 O) _* N! j: I
Compliance is checked by subjecting enclosures and other external accessible parts to the
k- E9 K# ]0 T+ l: D$ ~glow-wire test with the temperature of the glow wire as follows:
- f& B1 r2 P- \% {– 650 °C for enclosures. }7 f% ~. \3 x4 h6 z5 q8 r4 c7 t- E
– 650 °C for parts retaining current carrying (keeping in position) parts in position and
2 U3 U+ m* T& \+ pterminals for external conductors which carry a current up to 0,2 A during normal
$ A* z; l9 i- \, h* ? [operation3 R" G- `0 I: z% }8 s2 ?* H
– 750 °C for parts retaining (keeping in position) current carrying parts in position and
( o7 |$ u4 [7 A: b# X% ^terminals for external conductors with fixed connection (e.g., soldering) which carry a
. q2 i: t i. i5 }+ H0 Kcurrent exceeding 0,2 A during normal operation1 C! |: Q- M* j E( L
– 850 °C for parts retaining (keeping in position) current carrying parts in position and
( C9 x; ~2 L8 h5 e$ J4 t. u( eterminals for external conductors with non-fixed connection which carry a current
- W2 c! j; Y) P9 Fexceeding 0,2 A during normal operation6 A! Y3 F! A; @9 E6 S+ g. G
No glow wire tests are required for foils in thin sheet form with a thickness of up to 0,2 mm.
! e* M" J( U* u27.3.2 Internal parts
. a* k) d! l! S- M) i3 lParts of insulating materials retaining (keeping in position) current carrying parts in position; r: W* N% h5 ?& K9 R# Q& T$ i& v
shall be resistant to ignition and spread of fire.6 e; _4 A) q1 C$ {) _* Y1 R7 ?
Compliance is checked by subjecting the parts of insulating materials to the glow-wire test
) t$ k( K0 \9 G9 kwith the temperature of the glow wire as follows:1 N9 S( k8 ` _% g. m0 R/ M
– 550 °C for internal insulating material not retaining (not keeping in position) current& N2 q2 c9 o- c3 `, y/ \2 ?6 w2 [
carrying parts in position
@% n5 ]/ Q6 ^9 i# J– 650 °C for coil formers (bobbins)
v5 a8 m0 |! W" ]– 650 °C for parts retaining (keeping in position) current carrying parts in position and
5 Q1 ]7 S T; R" c2 J5 Tterminals for external conductors which carry a current up to 0,2 A during normal
0 V1 `8 b% _- y7 [1 l4 hoperation
( s# z1 l/ i( |( k; h– 750 °C for parts retaining (keeping in position) current carrying parts in position and
, ?3 F- i8 O) z! I7 Mterminals for external conductors with fixed connection (e.g., soldering) which carry a( O! ?# m$ u/ h8 v
current exceeding 0,2 A during normal operation
+ Z5 p4 w3 C8 v( v% o* I* B6 {8 n– 850 °C for parts retaining (keeping in position) current carrying parts in position and
# r; t* X8 P0 M/ |6 _% E5 B4 Pterminals for external conductors with non fixed connection which carry a current- L, E( U$ k4 p" L" { A1 f" G
exceeding 0,2 A during normal operation7 }" A) o% k" Z+ ?6 {
No glow wire tests are required for foils in thin sheet form with a thickness of up to 0,2 mm. |
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