DSH 716 Probe impedance for plug discharge test

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DSH 716 # u1 s5 G8 v& P+ x. z

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 0 g, ^: B6 Z5 n+ A

Standard(s): No. Year
! [) K; g8 y: BIEC 60065
. M+ I: ^; l6 B8 O: ^" TIEC 60335
IEC 60950
/ p& T% J( Y" q6 V& R/ kIEC 61010
6 t" K8 C" t5 F! O  J+ any other as applicable
DSH-
0716
2008
9 ]  N9 W0 o. g. g0 ]3 Q/ hCategory:
HOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
9.1.6
# X; k& s3 X6 C, P22.5
0 N, ?: d' W! k0 V4 l/ l2.1.1.7
+ ^+ D$ h1 o3 x3 Q7 _6.1.2, 6.10.3
…
Developed by: WG2
WG4
Subject: Probe impedance for
plug discharge test
. ~& d( W, I0 E- B0 I+ J; e" [Key words:
- Probe impedance
- Plug discharge
& c& Q4 e6 ]( F4 p. E& Z- >= 100 M

- 25 pF or less
7 j0 \  ^, `' `! J7 g$ _- {$ |, v4 oDecision approved at the
% b: A' [* M1 q' b! H$ y) `2009 CTL Plenary Meeting
Question:
1 |# x0 v, m: K) _/ yWhen 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
. d6 }+ J# i/ G, r2 uuniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
' h9 s5 `8 F# ?$ VDecision:
# U" W1 }- `# m! nIf 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
' ?) ]; z; e! S; l25 pF or less, shall be used for this test.
For other (automatic) equipment with special measurement techniques equivalent
2 c! ~6 M; i9 omeasures shall be taken to ensure comparable results.

& b7 q# S; n+ {& j1 h  N) C: n& X+ _