DSH 716 Probe impedance for plug discharge test

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DSH 716 1 x) @; e' D7 O, f

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

5 N. E) q' L- _6 Y! \) T; QStandard(s): No. Year
" `4 G  Q1 m# Y3 v+ m5 z% [  MIEC 60065
6 e( c0 v( O# K* ~* D8 Y0 H+ oIEC 60335
( D: m* c/ Z) X8 h( |IEC 60950
IEC 61010
2 Q5 \  l" v  m% z" w+ any other as applicable
DSH-
, `1 E; i2 K0 _5 w0716
2008
; E5 n: Y* ^! I; O  ]5 iCategory:
HOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
4 w+ p6 P* t4 N, ^+ I9.1.6
22.5
2.1.1.7
6.1.2, 6.10.3
…
; H0 y) ?2 L7 z7 {# |! {Developed by: WG2
WG4
0 v0 o/ Q, L; Y2 t: F: h, R2 KSubject: Probe impedance for
6 }7 H" E3 B4 V  \plug discharge test
Key words:
- Probe impedance
- Plug discharge
- >= 100 M

- 25 pF or less
Decision approved at the
) J! t: d% ]& H' e, x% g2009 CTL Plenary Meeting
- F( s- d/ \2 i5 t1 t7 \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
uniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
, `. c- F2 h9 @8 cDecision:
If the relevant standard does not contain contradictory requirements, a voltage probe
6 j, G$ v0 K# A7 e, b1 j6 fhaving 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.
( r  w9 x; Z& sFor other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.
  a0 y3 y6 E/ b" ], M
2 t& ~" R  q, J) l7 C