DSH 716 Probe impedance for plug discharge test

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DSH 716

Probe impedance for plug discharge test & j0 ]6 @6 K0 ?2 Y7 f4 e% W0 V

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 8 D- D8 e, B% k2 q# J) I, z

8 z  Y' s1 V" U2 U: DStandard(s): No. Year
IEC 60065
, e# d" s( l) W! u5 I; TIEC 60335
IEC 60950
, d% U3 |# j8 J* A! ?' e; @3 b7 n% FIEC 61010
4 n: {  a+ }7 y. H7 t) ~1 K+ any other as applicable
DSH-
/ i# C8 K0 q' s- d0716
2 n0 J+ q9 A8 _4 P( Q2008
Category:
HOUS, MEAS, OFF, TRON,
$ M! V9 R& `8 _% HVarious…
4 Q9 y$ ^; L  E: a. M0 Y5 ~Subclause(s):
9.1.6
22.5
2.1.1.7
  C  e. f+ B4 h2 Q6 e* O& _! n! V# Z6.1.2, 6.10.3
& q; Q; Q+ u" i4 O! ^6 i/ y2 [; t( c…
Developed by: WG2
WG4
9 W$ c* y3 I" g! @: i( C5 {. v2 C& gSubject: Probe impedance for
: {" Q9 H' V) ~; u  |plug discharge test
* b* ^/ E  Y/ _* T7 SKey words:
' A9 |0 `/ ?" b6 f- Probe impedance
- Plug discharge
- >= 100 M

/ X) L" j7 ]# K- 25 pF or less
Decision approved at the
" e! `, {0 V2 w# _3 U; C2009 CTL Plenary Meeting
Question:
  E# n! O. |; U3 j, T+ LWhen the plug discharge test is performed using a voltage probe and oscilloscope for
( q; g* F8 a% x& w& Cdirect measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
8 T3 z$ U$ Z: b6 E' U. L1 _* vNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
0 b  H7 t9 N- w0 y& d: H) kDecision:
If the relevant standard does not contain contradictory requirements, a voltage probe
3 I1 |, k# B0 I. `  w. s3 `$ hhaving 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.
For other (automatic) equipment with special measurement techniques equivalent
- H2 o) R+ a- G7 B/ W; H1 ameasures shall be taken to ensure comparable results.
5 D0 [: ~/ J; |