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标题: DSH 716 Probe impedance for plug discharge test [打印本页]

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作者: 小米    时间: 2012-11-6 13:45
标题: DSH 716 Probe impedance for plug discharge test

DSH 716

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 E' n7 o7 P8 o

5 `. q  x5 d9 e, o) Q# ]Standard(s): No. Year
IEC 60065
3 i; z! P9 x# p) `5 ~IEC 60335
  T) a9 G" J8 jIEC 60950
IEC 61010
+ any other as applicable
  c; u4 t2 c% L( F' v1 K! z0 EDSH-
( a6 s0 |& L8 |7 n4 i0716
& d9 k6 _% h+ K) A7 e8 [2008
  G7 E7 i+ m4 [Category:
HOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
8 \! n; ~5 r3 r- R; P! B: h( z9.1.6
22.5
2.1.1.7
7 V' n8 V0 H% s" }' M6.1.2, 6.10.3
3 B9 U) Y' N3 L! N8 S…
Developed by: WG2
4 x# i( f# c" `5 e# q7 OWG4
Subject: Probe impedance for
, d: v; x% v8 A$ p* pplug discharge test
Key words:
8 i7 h) v/ }) M1 a. a2 e' t, d- Probe impedance
5 Y* e4 W% _# E' ^. i: X- Plug discharge
- >= 100 M

- 25 pF or less
' E/ @1 A$ O; y0 X' \4 ?. jDecision approved at the
2009 CTL Plenary Meeting
) {- H' y6 u5 h# KQuestion:
0 }6 m* m  R: l( c% qWhen 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.
) z2 T7 k7 @0 F  e1 }' ]5 |. }5 tDecision:
If the relevant standard does not contain contradictory requirements, a voltage probe
; H/ ~& Q' Z& shaving 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.
' Z4 w4 A% \7 q# d3 Z8 AFor other (automatic) equipment with special measurement techniques equivalent
9 f' K) i4 @. ?$ D! r3 V! mmeasures shall be taken to ensure comparable results.

  S) j& ]6 D' ~" V6 {[attach]77139[/attach]

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