DSH 716 Probe impedance for plug discharge test

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DSH 716 , {$ g1 m6 y, _, C  e  t2 u# t" K

Probe impedance for plug discharge test

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

" w4 n4 V. Z+ FStandard(s): No. Year
IEC 60065
IEC 60335
) N/ n! Z/ o& z" G! TIEC 60950
4 _+ Y% q. W; g# F9 x( BIEC 61010
+ any other as applicable
2 r3 D- L/ s1 N1 P( ]DSH-
0716
( Z  V. ]# i4 X5 v, L+ N2008
Category:
% `( C. ~. [2 I/ K( R9 i2 BHOUS, MEAS, OFF, TRON,
Various…
9 Z5 h, F: P  w+ `9 a1 T% e2 BSubclause(s):
; ^- H2 K: d; p' o: H! c* F, c- r9.1.6
22.5
2.1.1.7
$ @* A9 u) {6 j2 V6.1.2, 6.10.3
4 P& _! I  q, b1 A! L$ A) o1 W…
, M$ I% J. {. `Developed by: WG2
WG4
Subject: Probe impedance for
3 f8 U9 e2 J$ d  a, A4 ^9 wplug discharge test
; E% H) V9 O  g0 x6 C# b5 \, gKey words:
# [. ^- j1 `' _* D- Probe impedance
- Plug discharge
0 X" e, K- B1 `, U) G: ~- >= 100 M

) l- `$ y4 P" W/ s+ N6 H- 25 pF or less
Decision approved at the
" Y  `% H, [8 [2 A- w2009 CTL Plenary Meeting
Question:
When the plug discharge test is performed using a voltage probe and oscilloscope for
: ^! f1 L8 l" ?* d2 c+ d7 G; mdirect measurement of the voltage decay, what probe impedance shall be used to ensure
' p+ a) {* r. l# m7 Guniform and comparable results?
, i0 r8 z* X  v) {; ~. c- zNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
5 t0 x2 z# w+ V' a6 G# G6 UIf the relevant standard does not contain contradictory requirements, a voltage probe
having 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.
- e6 ?8 z# Z  @, [9 @For other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.