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| Probe impedance for plug discharge test, P r, h/ x* L" _5 [2 K" [
| 9.1.6 (IEC 60065) 22.5 (IEC 60335) 2.1.1.7 (IEC 60950) 6.1.2, 6.10.3 (IEC 61010) + any other as applicable# Q h$ P6 o5 H+ Z/ L
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* Q7 ?0 ~. m3 K0 F% W) a# wStandard(s): No. Year
0 P& ]& C, D$ y. J c) JIEC 60065 [6 U! K- v* N# W1 n7 o7 M
IEC 60335
/ H- Q% O( }6 w: uIEC 60950 p( S! ?$ [6 [( N/ ]: ]# J
IEC 610108 ^7 i4 [+ F, B7 a5 Q
+ any other as applicable; O6 e# J' z! V$ r- O7 q
DSH-* J* c! u& z1 I9 i" v1 a: V2 g v% g) ]
07167 G4 K0 k3 ], K
2008
) I! E& Q8 C6 w* E8 I% V* j' KCategory:; N; v# b7 j# _
HOUS, MEAS, OFF, TRON," r2 X: Y$ M! Z: X/ [9 [2 {
Various…
( m- S! w! X, R, ^, kSubclause(s):
5 H2 ^ `% H, b9.1.6: M7 Y, c: |7 L# e: X
22.5
3 J* J( z) E) N, g* X5 ]) e8 }2.1.1.7* W' D5 I, c' K; s/ |$ e4 V
6.1.2, 6.10.3! ~5 ?) x! H# u! z' X' t& o$ g. M
…! N! Q% a: J. R9 u1 t
Developed by: WG2
) l' y5 t- f I7 s/ G( l& t* j6 bWG4
8 r) R- s% @% W+ f9 \0 k) l+ J q7 DSubject: Probe impedance for* ~* T) S w: C2 h
plug discharge test, h1 J9 \+ K: v
Key words:$ G! B: U+ x l* n8 {
- Probe impedance t4 K, _- V$ m' g
- Plug discharge2 Q: m- ~' u6 Y
- >= 100 M, V9 f6 C; s( h) q+ I+ ] e
- 25 pF or less
' U" J; Q' d+ S& L" a% `Decision approved at the
' h9 [4 [7 r* s) \& c1 y- F W2009 CTL Plenary Meeting
4 x6 V' ~. C0 j; e1 ~& NQuestion:: c7 P5 q" V2 a$ M* W. ^( p; l
When the plug discharge test is performed using a voltage probe and oscilloscope for/ W W# d, o- n0 a
direct measurement of the voltage decay, what probe impedance shall be used to ensure; O! `8 `) ]' s$ m
uniform and comparable results?6 U! s* p5 z. ]/ B# T: Z
Note: IEC 60950-1/2005 specifies 100 M ± 5 M in parallel with an input capacitance of 20pF ± 5 pF.# x" i/ p' @- v0 g( E% g$ g
Decision:
/ v6 Z$ ^; j- r7 }8 \6 Y) C8 c6 L9 ~If the relevant standard does not contain contradictory requirements, a voltage probe
4 w$ f9 Y' c3 X" t# bhaving an input impedance of 100 M or greater in parallel with an input capacitance of+ y' M1 |. J$ `, C3 f
25 pF or less, shall be used for this test.
& d, K9 v5 V( K. |For other (automatic) equipment with special measurement techniques equivalent- `6 C5 ~+ `8 ~: J
measures shall be taken to ensure comparable results.
. }) y p+ T h$ ?! k T2 h; d6 k7 b/ b
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