DSH 716 Probe impedance for plug discharge test

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DSH 716

Probe impedance for plug discharge test $ A' w# G9 u! ^. t

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 0 z+ a! P. M& v+ g# @5 i4 t

6 I8 ?* m0 R# \$ i! PStandard(s): No. Year
IEC 60065
IEC 60335
IEC 60950
IEC 61010
+ any other as applicable
( l7 `0 Q0 G, g3 Q* ADSH-
0716
2008
5 z2 ^1 f* x8 J1 o# lCategory:
4 x+ l- n2 _! |$ EHOUS, MEAS, OFF, TRON,
: U. W+ A  V: |5 EVarious…
* ~; |9 P% T) |5 o( M1 V: k+ Z+ g# jSubclause(s):
9.1.6
- Z) L% n: \; E) Z0 P. ]( R) q" c; T22.5
; ?+ L4 m3 ]% W$ o2.1.1.7
; z7 m: X" Y' {5 s6.1.2, 6.10.3
% }; k+ V7 D) y# Y* ~  Y: S/ p…
Developed by: WG2
, y8 h- a  d2 J8 ^6 t) e# yWG4
Subject: Probe impedance for
* C8 U$ \  s- bplug discharge test
6 |& ^7 K7 C8 V' B! N$ G0 NKey words:
- Probe impedance
- Plug discharge
- >= 100 M

- 25 pF or less
- u6 x) Z# l0 b2 w3 ~; c$ r! RDecision approved at the
6 O) q" Z' a. S8 D2009 CTL Plenary Meeting
Question:
4 A7 R1 H1 A6 CWhen 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?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
4 j; c- p+ _& R% g3 c) hIf the relevant standard does not contain contradictory requirements, a voltage probe
. i8 Y: `0 e7 D  h9 whaving 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
measures shall be taken to ensure comparable results.