PDSH 994 Endurance test for built-in ignitors in the rectifying test circuit

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PDSH 994

Endurance test for built-in ignitors in the rectifying test circuit

12.1 – 12.2

60927(ed.3) : x: R3 N/ I, w8 T& A; h- A# S

0 N. q/ g8 r) H' q- }: gStandard(s):
IEC 60927/2007
Subclause(s):
12.1 – 12.2
No. Year PDSH 0994 2010
Category: LITE Developed by: ETF5 OSM/LUM
- ^# d' T: b4 `  H7 I# t# ?( cSubject:
7 y# A, r" n/ J. V$ R, p4 x6 R& aEndurance test for built-in ignitors in the rectifying test circuit
Key words:
8 |% t! d- e: h8 |3 K& @0 @- Test quantity
( G7 ^5 @6 l7 n- Additional ignitors
8 N" v- \# d: i+ C* u& v, O) E1 }- 30 days
To be approved at the 49th CTL Plenary Meeting, in 2012
Question:
$ ]5 l% l* k$ u, N3 P; P1) According to the § 12.1 of IEC 60927/A1 the test quantity shall consist of two additional ignitors for
5 F* v+ S: R# i6 W$ Nthe test as specified in the third paragraph of 12.2:
1 H$ K' `9 c  S" h: d$ C“Ignitors intended to be connected in series with discharge lamps which could, according to the
9 I5 ?. e5 g4 x& \" a& F8 ^" dspecification lead to ballast / ignitor overheating, are tested additionally under conditions with maximum
$ J& X0 w/ F* t) S( B0 U; Wcase temperature brought to (tc + X)°C and with rectifying test circuit in accordance with IEC 60598-1 V
Edition, § 12.5 and Annex C”.
& m  \8 r2 z. {5 [7 {" k1 ~In doing so, if we test ignitors intended to be built-in, without replaceable switching elements, the ignitors
2 f0 f/ u  y- }- i% Vshall be subjected to 30 days continuous operations so that the lamp current is adjusted to maximum (by
varying the resistor R2), but in any case not higher than three times the normal lamp current. The test
, V% ?. s0 `# \# z- u2 [voltage is 1,06 times the rated supply voltage of the ballast. Our experience shows that some ignitors
reach the maximum case temperature at room temperature in this circuit, when they are placed on a
wood board. Can the test be performed in this arrangement and the type accepted if after the test both
ignitors comply with the relevant requirements? If the answer is no, how shall the test be performed?
& F0 a, B( f; _- y2) Is it acceptable that the marking point for tc and (tc + X) would be at different places on the ignitor?
Decision:
1) Yes.
/ E' ?, p' x1 q+ e2) No.

5 f9 @8 p+ J  t5 }) e* s" j$ s
: X& V) x7 C3 q' {4 X+ t

# M6 J4 Q0 e) u" I8 x) H; q1 F; m