DSH 716 Probe impedance for plug discharge test

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DSH 716 2 {' b0 g. x9 N' f

Probe impedance for plug discharge test 6 C& Z1 y* S3 ~2 h3 j+ C

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
IEC 60065
IEC 60335
IEC 60950
IEC 61010
+ any other as applicable
, M* ^4 x8 e- M4 s% pDSH-
0716
2008
8 [4 b4 k( v5 pCategory:
; ?2 a1 d" Y; q+ W! gHOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
9.1.6
6 y0 t2 g5 l# f+ i, e22.5
2.1.1.7
6.1.2, 6.10.3
…
" }% }) E, _+ A* H2 U0 q( p* VDeveloped by: WG2
- n) ^5 `4 h" Y2 r6 i( O0 U. tWG4
Subject: Probe impedance for
9 Q/ u) n/ [' S6 vplug discharge test
Key words:
- Probe impedance
: E9 ]4 x. Y$ I& U! G& _- Plug discharge
# Z; J5 ~1 X6 o- >= 100 M

- 25 pF or less
Decision approved at the
2009 CTL Plenary Meeting
# I; G1 v/ a. j8 n6 WQuestion:
- E0 v7 Y5 S) y0 w/ N, _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
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:
$ ]1 q6 B% Z! J  dIf the relevant standard does not contain contradictory requirements, a voltage probe
5 Y0 V( f# C: Bhaving 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
. W$ \  k' D/ h% _: N3 Zmeasures shall be taken to ensure comparable results.
( F: x9 l5 U% Y( r/ b. I" U
, f  [, Y8 h! S! F) t