DSH 716 Probe impedance for plug discharge test

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DSH 716 ' p# m1 j8 P2 q) t7 d: V

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

Standard(s): No. Year
  }# p* c4 w1 U1 w, j5 y' ~4 MIEC 60065
; ~9 a1 }0 _9 l- r$ hIEC 60335
IEC 60950
) {6 l3 c- ^! ZIEC 61010
+ any other as applicable
4 z. @8 |3 [4 a! |7 w3 [! `9 SDSH-
0716
1 f, Z5 [8 Y# D" E+ k$ r& F- Z2008
5 f: {# M# D3 J' zCategory:
; }1 g# d" `7 G3 dHOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
9.1.6
) Y2 A2 d( v! z# j2 L22.5
3 Y0 m% Q( N. W8 b2.1.1.7
  y3 ?2 i  g$ u! P5 `( V, a( {6.1.2, 6.10.3
) m* |. ?( ?- D…
) s; j. a  @( x, u& W" J# n' X6 WDeveloped by: WG2
WG4
Subject: Probe impedance for
8 N  a" M( S' g1 Vplug discharge test
4 W, B; {+ S, y. \" C! i) LKey words:
- Probe impedance
- Plug discharge
1 l6 F) q) p1 k8 ~" a2 S2 H$ z- >= 100 M

) ^2 O5 E/ s+ f7 }- 25 pF or less
2 F9 [; W8 ]# `7 v- i$ {& M+ {Decision approved at the
* a1 k3 W1 n4 p% n; I% F. J: p; W2009 CTL Plenary Meeting
: [# B8 |& U0 G2 K5 R% u0 AQuestion:
8 G6 |& q9 g. A3 A8 QWhen the plug discharge test is performed using a voltage probe and oscilloscope for
; q; f# s2 D% q; G4 Fdirect measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
- ]% N  i9 H# `* Z' N" H/ Q! ]: eNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
7 b/ \# }9 [) W& L7 ]: JDecision:
If 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
( w6 Q: t# i+ S3 W# U25 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.