
Appx.
4
Influence of Capacitive Load
Appx. 4
Influence of Capacitive Load
Pure resistance is assumed in the instrument specifications, however, some
capacitance components are contained in the equipment to be measured. The higher
the resistance is (small detected current), the more variability the influence of a
capacitive load causes.
Influence on output voltage rise
The charge current of the instrument is 1.8 mA (less than 20 mA).
If a capacitive load, such as a capacitor, is connected, the time required for the output voltage to
rise is affected. The time is calculated as follows.
CV = it (C: Capacitance (F), V: Voltage (V), i: Current (A), t: Time (s))
Example: If a test voltage of 500 V is applied to a 1.0 µF capacitor, the time required for the
output voltage to rise to 500 V is approximately 0.28 s, calculated by (1.0 µF × 500
V)/1.8 mA.
If the equipment to be measured contains capacitive components, extend the test
duration.
Repeat accuracy
Test condition: Connect and measure the resistance load and capacitive load in parallel. (See
the figure below.)
(A film capacitor is used.)
Instrument
Connection diagram
As the test data shows below, measurements were performed for each resistance range and
variation in the average of 100 measurements was calculated. The measured values were
obtained with the capacitor charged.
(Test duration: Max. 100 s)
Содержание ST5520
Страница 2: ......
Страница 8: ...vi Contents ...
Страница 22: ...14 Usage Notes ...
Страница 56: ...48 Announcing the Judgment Results Using a Beep Sound ...
Страница 82: ...74 Initializing the System Reset ...
Страница 88: ...80 Deleting the Panel Data ...
Страница 158: ...150 Command Reference ...
Страница 193: ...Appx 13 Rack Mounting Screw location dimensional drawing 10 9 8 7 6 5 4 3 2 1 Appx Ind ...
Страница 194: ...Appx 14 Dimensional Diagram Appx 8 Dimensional Diagram 166 2 215 1 14 1 80 1 ...
Страница 197: ...13 09 ...
Страница 198: ......
Страница 199: ......
Страница 200: ......
Страница 201: ......