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|  DSH 716
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| Probe impedance for plug discharge test
. k/ C6 e" z. a% o9 y# K+ b7 c | 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, p/ g7 Q' r5 D2 n( c; c
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Standard(s): No. Year& Q! Y" e# j) b; n
IEC 600653 e- Z3 c" Z) b/ q3 M6 V, J* u
IEC 60335
3 k; g, C; B8 F% \1 lIEC 60950/ M; C( m" K, `( Q! [7 f
IEC 61010# @+ {$ D# A+ m( J8 q3 p
+ any other as applicable
f, f8 H- s) fDSH-
2 N1 o: o6 S( q4 q+ C0716
6 u- Y2 d' U3 h4 L6 y2008
+ g9 M7 t& H+ ^$ @8 T4 xCategory:3 e4 f7 O$ s7 X8 c$ ^( f6 i0 t
HOUS, MEAS, OFF, TRON,
8 f% f7 r" [% b5 n b7 {Various…, o8 @" {; {2 T$ b" s8 a3 N4 K% z
Subclause(s):9 x) \2 `, D8 e) w, o G- ^
9.1.6
; Z& K9 m! c7 W9 h S( v. a5 a22.5) j2 V8 Z7 d; c: c( i1 B
2.1.1.7; |9 v( H. a0 [+ |& a: r
6.1.2, 6.10.3) B3 N6 f7 |2 o+ x9 k: s1 d# |# K
…' m) w. w" }1 i( R" ~: d4 A
Developed by: WG2
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7 j8 p H1 j! r B3 u, t9 M0 _0 GSubject: Probe impedance for) Q' M5 s4 O# s' ?$ S6 q2 A
plug discharge test
/ ?' ]6 w9 j2 z7 iKey words:
9 F/ p7 p0 n- P/ e" E- Probe impedance" Z9 q; J2 E2 j8 \& S
- Plug discharge
( f# P1 t+ }# [( e7 h- >= 100 M2 d5 x' p8 e) T% m( P* x% X
- 25 pF or less9 e7 V4 F, L" w! j% O3 |
Decision approved at the [( K" h7 X% c: n; G: b* i
2009 CTL Plenary Meeting- _) {8 g! j* p6 N
Question:$ H3 c N9 g8 U0 d4 Z
When the plug discharge test is performed using a voltage probe and oscilloscope for
& ^% A! S7 J4 ^' [8 Ddirect measurement of the voltage decay, what probe impedance shall be used to ensure
& ~5 s+ {* Y7 I5 m5 @uniform and comparable results?) F! P# u7 a7 W: [& W% G
Note: IEC 60950-1/2005 specifies 100 M ± 5 M in parallel with an input capacitance of 20pF ± 5 pF.
" m" L" U' Q3 e c4 w) k KDecision:6 O0 C" V/ L$ `
If the relevant standard does not contain contradictory requirements, a voltage probe7 x* Z2 ?" A/ j
having an input impedance of 100 M or greater in parallel with an input capacitance of* ~, F9 p7 R! w4 d/ a& ^
25 pF or less, shall be used for this test.
( V8 {" ~& h" [1 o! ~/ @, T2 WFor other (automatic) equipment with special measurement techniques equivalent
4 X7 p8 F/ ^1 `* c3 o8 K; }; f" nmeasures shall be taken to ensure comparable results.9 w( ]. |" w' J- t, X9 b
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