DSH 716 Probe impedance for plug discharge test

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DSH 716 5 s7 W- r9 V; m: @  x

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

, Q% |6 ?0 v2 F- R1 pStandard(s): No. Year
1 g( c5 K$ `& _5 TIEC 60065
1 M( v0 B, i7 NIEC 60335
IEC 60950
5 R, ?2 W  E! r' G0 I) z. O0 LIEC 61010
+ any other as applicable
DSH-
" x6 a5 \4 S& c7 x, N0716
2008
Category:
HOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
* j6 ^5 o. i) z. P* W. w9.1.6
3 ]8 |" N' |+ d$ ?7 F+ j( O/ S22.5
2.1.1.7
6.1.2, 6.10.3
…
Developed by: WG2
WG4
Subject: Probe impedance for
plug discharge test
Key words:
$ l1 A# f  w  v( o5 r- Probe impedance
: A6 ^8 e4 q/ g' B* \$ I- Plug discharge
- >= 100 M

. q( q1 B5 E8 Q2 d  r; o- 25 pF or less
6 I2 L5 S4 a8 W% u; MDecision approved at the
2009 CTL Plenary Meeting
! I1 Y2 @0 d9 y& K; F/ BQuestion:
When the plug discharge test is performed using a voltage probe and oscilloscope for
3 u2 V$ e3 ?; Ldirect measurement of the voltage decay, what probe impedance shall be used to ensure
+ |% T& u' L; w# `6 }9 F! Quniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
" V7 H9 u: k2 N% G5 VDecision:
, s# L5 e& d6 uIf 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
9 t) s) h' L1 {+ ]6 m5 [25 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.