DSH 716 Probe impedance for plug discharge test

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DSH 716 * `; R, w* T4 j6 O

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

Question:
2 d& I5 [7 q# L1 W& PWhen 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?
' F4 c" K. e# }2 HNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
0 N" n$ k+ e2 B2 b2 X; QDecision:
7 z' i" K- i* X  f3 v! O" Q, V; ]If 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 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.

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