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|  DSH 716
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| Probe impedance for plug discharge test
' f X. N' k7 x. q. e6 C t | 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- y" M5 }4 \/ e3 Y
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Standard(s): No. Year8 {/ n4 d' a0 C! M8 P! I
IEC 60065+ Q, a% v% M# F3 N: I
IEC 60335
$ o( K6 C' J9 qIEC 60950$ @( ^0 E2 X S8 n
IEC 61010
% L1 K3 D) h1 [- G% }& O+ any other as applicable' E6 e/ B/ T4 j' c
DSH-
k7 L2 G% ~, k0716
8 z! ^% j' S% X' L& c20083 k6 I7 [- [3 `% l6 |5 t% l
Category:
( n v1 C5 @4 S5 Z5 |HOUS, MEAS, OFF, TRON,
! y f% Z F" Q6 J$ nVarious…7 K: ` D2 j5 a1 O X$ s* ?: k
Subclause(s):
' \4 z; m; X4 T$ `9.1.6* t6 U4 [9 z6 x. O
22.5' R" Q; ^; `' Z& R% Z
2.1.1.7! Y6 d# z8 v3 r% v+ v
6.1.2, 6.10.34 e4 h4 x) W. g6 Y8 q* p$ o# p" ?+ C
…4 k7 o, t' U9 k: j' J3 r l0 F; j
Developed by: WG2
7 L' a" M* Y) I7 F! L: zWG4, r, d7 M. } h
Subject: Probe impedance for
8 m; w/ D" c5 Cplug discharge test5 K+ t- g- G. l' t6 U
Key words:
w5 c/ O* C5 t: N5 p, h u1 h# w- Probe impedance
( G, R) ^& b" [ \/ o+ e- Plug discharge. n$ q. e; I& `7 A$ v& h
- >= 100 M) u4 ~+ Q4 W5 @* n: R6 H, x) d
- 25 pF or less) H; p! J2 p8 C# |8 v2 V/ L' Y2 t
Decision approved at the
9 N" N" X* i0 s( N& @2009 CTL Plenary Meeting# A% k' u! C {, R) ?* g
Question:
" d9 g" o+ {! P: j( u# }When the plug discharge test is performed using a voltage probe and oscilloscope for
7 ^: C9 S. |! O4 @! f; Edirect measurement of the voltage decay, what probe impedance shall be used to ensure
7 L2 F# O- a$ Auniform and comparable results?/ T3 P/ z0 x7 |
Note: IEC 60950-1/2005 specifies 100 M ± 5 M in parallel with an input capacitance of 20pF ± 5 pF.
% x/ x5 [* w( }: w1 x; }5 q0 BDecision:: ^! u9 P2 C8 Q4 D8 {
If the relevant standard does not contain contradictory requirements, a voltage probe
5 y, D8 J2 E2 x$ }1 v( ehaving an input impedance of 100 M or greater in parallel with an input capacitance of5 e+ i0 h' G# e
25 pF or less, shall be used for this test.
1 G8 u* @. e( r! K8 cFor other (automatic) equipment with special measurement techniques equivalent- Q6 I- m# `5 O
measures shall be taken to ensure comparable results.
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P6 l1 c/ e% E0 O |
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发表于 2012-11-6 13:45
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