DSH 716 Probe impedance for plug discharge test

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DSH 716 ) r3 _, F0 `9 F: I/ d

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 _5 I7 Y( Y0 }! r# S& l- q

Standard(s): No. Year
& w8 K. q: E# @  L' I4 uIEC 60065
2 Y4 L! C% w3 VIEC 60335
IEC 60950
8 ?5 B+ O3 o: @) I! x: ~IEC 61010
+ any other as applicable
0 k0 K5 O$ I5 v' DDSH-
' P5 ]8 p# a) o0716
2008
1 Z( v! d# E7 C9 a6 o& ZCategory:
HOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
- A% x6 D  r* R) ?0 O9.1.6
7 y1 ]* [+ b6 h" g5 ]6 a: f! |22.5
2.1.1.7
6.1.2, 6.10.3
) @0 N$ Y6 p' d2 l  E2 k…
Developed by: WG2
WG4
Subject: Probe impedance for
( E2 O7 P6 a( xplug discharge test
4 V' }+ E( ~5 E1 n7 ~Key words:
- Probe impedance
2 e$ }0 J$ f4 B' }- Plug discharge
* H1 p8 k7 Y0 q; B- >= 100 M

) a9 b' V# w3 e/ K- 25 pF or less
Decision approved at the
3 I& F8 [( z/ Z; d2009 CTL Plenary Meeting
$ G! v$ R- |: k: U1 L; l+ BQuestion:
When the plug discharge test is performed using a voltage probe and oscilloscope for
# q* q' F! b$ t, a4 T  X! Ydirect measurement of the voltage decay, what probe impedance shall be used to ensure
8 O  @( D% z5 c1 _3 J: [uniform and comparable results?
* Y, P6 ]7 k; g& aNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
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
' E( F$ ], o7 r2 B$ Z2 L6 S25 pF or less, shall be used for this test.
For other (automatic) equipment with special measurement techniques equivalent
8 s; W6 T- L& W2 T1 ?8 _6 fmeasures shall be taken to ensure comparable results.
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