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Pearson high voltage coaxial capacitive voltage dividers permit measurements up to 500kV when used in high voltage insulating oil. Customized division ratio and calibration for use in air are available. See the table below for model specifications.
CAPACITIVE VOLTAGE DIVIDERS
Model
Number		 Fig.
Max. Pulse
Voltage
in Oil (kV)
Voltage
Division
Ratio
Typical
Capacitance
Added to Circuit
Droop (%/µsec.)
Useable Rise
Time (nsec.)
VD-305A
C
300
5,000:1
18pF
0.02
100
VD-301
B
400
5,000:1
28pF
0.015
150
VD-500A
A
500
10,000:1
38pF
0.01
200
Accuracy: Nameplate division ratio measured at 35 degrees C and temperature compensated to within ±1% for 20 degrees C to
80 degrees C.
Accuracy is ±5% with 25 feet of RG-58 cable on the output.
Custom calibration for other ratios or use in air is available.
Immersion in clean transformer oil is necessary for measuring
high pulse voltages.
Droop values given above assume a one megohm cable termination.
Cable termination—typical oscilloscope input (one megohm and 20 pF
in parallel).
Output connector—BNC.
Figure C Model VD-305A

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4009 Transport Street, Palo Alto, California, USA 94303
Telephone (650) 494-6444 • Fax (650) 494-6716