|
Capacitive Voltage Dividers
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 and Data Sheets |
Fig. |
Max.
Pulse Voltage in Oil (kV) |
Voltage Division Ratio |
Typical Capacitance Added to Circuit |
Droop
(%/µsec.) |
Useable
Rise Time (nsec.) |
|
| C |
300 |
5,000:1 |
18pF |
0.02 |
100 |
||
| B |
400 |
5,000:1 |
28pF |
0.015 |
150 |
||
| 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
