DSH 716 Probe impedance for plug discharge test

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DSH 716 ) I1 V# v; H* Y! e * V" z2 K. V& y. w0 v- m! M

Probe impedance for plug discharge test 3 y, X/ f2 n5 c& q

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

: h& @. j' e- B+ o2 DStandard(s): No. Year
IEC 60065
IEC 60335
% M; Z- r1 t& I+ A# E* EIEC 60950
IEC 61010
' o+ @( R* V9 o$ R+ any other as applicable
6 m/ ?) N0 t1 IDSH-
0716
& N; I" x; Y- W. k6 l2008
Category:
HOUS, MEAS, OFF, TRON,
& s/ G9 F) v9 O. ^" H3 Q- HVarious…
Subclause(s):
) Z3 k; ]. Y$ ^. A% q9.1.6
22.5
) j( v- |/ ~. a) v+ ?1 {2 k" M2.1.1.7
% u2 t2 G  N% S, T7 y( U( H6.1.2, 6.10.3
& w$ |9 y, ^! c7 Z% p…
Developed by: WG2
6 {; U* j& J: Z( _& T& y2 v& s* qWG4
: _- I5 p% y2 c1 T! U" DSubject: Probe impedance for
plug discharge test
Key words:
* l1 E6 U$ @7 M  o* O2 `1 H3 W- Probe impedance
- Plug discharge
. S! G! j# T* X/ m+ Y+ V5 i5 i! }- >= 100 M

! u3 S! j; t+ N* F* i6 q- 25 pF or less
: b5 F+ l: u7 r. UDecision approved at the
6 d4 J, Y3 c; S' i; v$ r3 ]  M2009 CTL Plenary Meeting
Question:
When 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
# g: G& L' n- Y+ muniform and comparable results?
& T( V7 s" |$ fNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
  {8 Q6 A8 E) k0 @. n& o2 hIf 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
; {6 B! {% W" y2 z25 pF or less, shall be used for this test.
. S9 Y9 d$ [; V9 {For other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.
# D! F% h4 }* k, b+ H