DSH 716 Probe impedance for plug discharge test

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DSH 716 - y" H7 i8 h- Q4 A1 y5 _( G: c

Probe impedance for plug discharge test : X- D+ ~/ K1 e/ ^- d7 @

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

/ f4 g+ h3 j& B( f+ c$ m3 B6 |) ~* K5 CStandard(s): No. Year
7 J1 W5 F8 R# M9 ~* b+ a* _0 K$ vIEC 60065
IEC 60335
. J# t6 ~: v! aIEC 60950
9 X" B5 I! z5 JIEC 61010
+ any other as applicable
8 [- U$ G* ^2 qDSH-
; [% A, }: x/ @1 A0716
' V* ^, i  B! @2008
6 x( `, x' f1 G7 p0 BCategory:
$ `- u+ P! r6 {) G0 x9 ZHOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
8 t+ c- g8 Q' |) q# H; y( E9.1.6
22.5
2.1.1.7
7 c5 h+ }: f% ^4 g* t0 }# i2 R; _6.1.2, 6.10.3
5 ?* J4 |) c; d7 i, H…
Developed by: WG2
WG4
Subject: Probe impedance for
* x! {* P% p  W8 vplug discharge test
2 R5 t# k2 ?) C2 y3 _% W4 L( {1 S: HKey words:
* P$ ^# Y. V+ I/ O- Probe impedance
# m# W9 F1 u' ~0 W, h- Plug discharge
3 y# D) S/ K  I8 r: a5 m* i  I  j- >= 100 M

8 P1 Q) g. W7 [( V' ~' Z- 25 pF or less
Decision approved at the
2009 CTL Plenary Meeting
Question:
When the plug discharge test is performed using a voltage probe and oscilloscope for
direct measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
/ Q  q0 N" j4 E- eNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
5 j. I9 _2 v. j2 n5 U3 v, @Decision:
$ b4 [) ]) P: |+ Q6 Y. e9 rIf the relevant standard does not contain contradictory requirements, a voltage probe
6 v5 E* `' F7 z- g% Zhaving an input impedance of 100 M
or greater in parallel with an input capacitance of
25 pF or less, shall be used for this test.
+ P: q/ _; u8 j+ h0 U8 j' g0 P( p  AFor other (automatic) equipment with special measurement techniques equivalent
3 w" B' U6 N$ s2 a' D9 f) v- |# Bmeasures shall be taken to ensure comparable results.