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|  PDSH 994
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; y v i/ d" j- m | Endurance test for built-in ignitors in the rectifying test circuit
# k+ q1 }/ F: U% s9 w | 12.1 – 12.2: _3 \0 F& {1 \
| 60927(ed.3)
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Standard(s):. k, J0 ?$ O3 }& `$ _
IEC 60927/20072 G& L1 e* n* X* x
Subclause(s):- u) [* [5 l7 e/ x& A; j& F' t
12.1 – 12.2
) ]$ O6 x) R+ J7 e* QNo. Year PDSH 0994 2010( g& v1 Z5 r, J/ ~- a2 K' h9 [
Category: LITE Developed by: ETF5 OSM/LUM" U" G6 h" H2 p
Subject:+ C' u9 G L* f+ B/ O
Endurance test for built-in ignitors in the rectifying test circuit9 R; F' m y9 N: N4 {3 M% ]* x( V2 n
Key words:
2 |, ?5 P% K7 u: H9 F& i' @- Test quantity5 k$ M6 r {& I$ R9 I, J- x1 ]# N1 }
- Additional ignitors- x- B$ O7 Z+ E) C/ i/ N' u
- 30 days& b( A/ P: A( `: \6 c
To be approved at the 49th CTL Plenary Meeting, in 2012! o7 G' J e; }6 R5 S7 U
Question:6 G7 S' C. }3 j" v) U v
1) According to the § 12.1 of IEC 60927/A1 the test quantity shall consist of two additional ignitors for4 j: r( P. S' I6 |8 D
the test as specified in the third paragraph of 12.2:+ h* e" ?5 ^. T/ S+ Y/ R
“Ignitors intended to be connected in series with discharge lamps which could, according to the9 s: C, v4 `9 c9 W0 [
specification lead to ballast / ignitor overheating, are tested additionally under conditions with maximum
- V9 ]* j+ x7 \0 e1 j& rcase temperature brought to (tc + X)°C and with rectifying test circuit in accordance with IEC 60598-1 V q! g& B$ e8 x4 I1 x
Edition, § 12.5 and Annex C”.
8 U0 P1 c( q4 QIn doing so, if we test ignitors intended to be built-in, without replaceable switching elements, the ignitors. \( |3 l5 X( C1 o% o+ Y
shall be subjected to 30 days continuous operations so that the lamp current is adjusted to maximum (by
$ o; R) N B7 }( p+ R6 J9 S$ Cvarying the resistor R2), but in any case not higher than three times the normal lamp current. The test# k% i1 x( j; k) V* p
voltage is 1,06 times the rated supply voltage of the ballast. Our experience shows that some ignitors5 @" H" T5 S; h g+ a: X4 a) X
reach the maximum case temperature at room temperature in this circuit, when they are placed on a/ x: ]) ?6 b+ N1 Q
wood board. Can the test be performed in this arrangement and the type accepted if after the test both7 E0 H) J5 p/ l2 n
ignitors comply with the relevant requirements? If the answer is no, how shall the test be performed?, s* A& g2 t& Z ^$ {: K. a
2) Is it acceptable that the marking point for tc and (tc + X) would be at different places on the ignitor?
8 F- h% @" [5 k2 TDecision:
# X9 R& L, s f4 v5 n) [' {0 T: z1) Yes.
3 H- B5 Q8 Q! a4 r1 O8 I2) No.
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