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标题: DSH 716 Probe impedance for plug discharge test [打印本页]
作者: 小米    时间: 2012-11-6 13:45
标题: DSH 716 Probe impedance for plug discharge test
DSH 716- `* a: j- n. @& \& e/ R
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Probe impedance for plug discharge test
& ]1 e5 I: V3 O5 h$ J4 H		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
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6 l3 ~6 B% U0 G6 [# h1 d' zStandard(s): No. Year2 P+ z- p) U0 v- g6 m. W% f
IEC 60065! v4 m/ N8 B8 q3 V3 }% O7 g
IEC 60335" d3 P5 w5 f" m
IEC 609506 g. G# [  G% T% B5 h. ^
IEC 61010
# B) C, D8 S* h' P7 e+ any other as applicable/ ?2 w% }# j' `( S) ]- N* Y
DSH-
6 C$ N$ Q1 N( F& y0 w$ T07161 C6 C# r0 E8 g: u7 P& C' c1 E$ o
2008
) H! q8 z. U% G9 _& U) UCategory:
/ u4 F+ w; I# W+ [9 c9 B0 Y1 m  eHOUS, MEAS, OFF, TRON,
2 @3 \% _, g8 y( k4 L# {Various…
, i$ |3 o; k! K+ [' b& ySubclause(s):; [5 o- H" }4 T7 s8 {% |% N' I
9.1.64 R  L5 v' V, y+ j8 R7 v' V
22.5" B/ Q0 ^! G  g5 f0 c
2.1.1.7; b; a. F. g, C" F& R
6.1.2, 6.10.3, \# ~% `4 h" U! R7 c
…
/ p2 C2 M: @1 h6 L; Y6 D5 ADeveloped by: WG2
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Subject: Probe impedance for) t' G' h0 f  ~! q
plug discharge test
+ Y: @# W3 c5 M$ s) C: W  nKey words:% z: q( W$ K* U% f2 [
- Probe impedance  H& ]0 R2 b. i8 S- A& u
- Plug discharge, A7 a5 X  u; m" W- n4 z- O
- >= 100 M# _, l/ _( K3 B  @  I
- 25 pF or less
; S' `- _5 y6 h, U! c; ?. L4 V! k* ODecision approved at the
% @" ?( }* u& i- b2 D, u" [2009 CTL Plenary Meeting7 F  K" k0 h8 d
Question:6 {2 `# {# I' }) g% L5 v) G- z- j
When the plug discharge test is performed using a voltage probe and oscilloscope for
8 c; U& f3 `( C& F) j- t. Xdirect measurement of the voltage decay, what probe impedance shall be used to ensure
1 J  f5 |$ M! }/ suniform and comparable results?
! P2 @! h+ I0 nNote: IEC 60950-1/2005 specifies 100 M ± 5 M  in parallel with an input capacitance of 20pF ± 5 pF.3 N: A' @- }, K8 B# O
Decision:
) Z: h9 ?4 f  V) `If the relevant standard does not contain contradictory requirements, a voltage probe
: s. E( n* Y; N  i, B% ^having an input impedance of 100 M or greater in parallel with an input capacitance of! i) F5 m! ]$ Y; |6 d0 _, o; J
25 pF or less, shall be used for this test." ^  l3 S+ o0 R) m! ~$ a) h6 F
For other (automatic) equipment with special measurement techniques equivalent9 x6 C5 ]0 l7 Y! o: s( X
measures shall be taken to ensure comparable results.: ?7 M1 z" s; o' I0 p

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