CPS HVP-252 Buku Petunjuk
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Halaman CetakINTRODUCTION & SPECIFICATIONS
1.1 INTRODUCTION
The CPS HVP- 252 is a compact, accurate tool for precise mea-
surements of high voltage. The suggested complement to the
divider probe is a differential voltmeter or high input impedance
DVM so that virtually no current is drawn from the measure-
ment circuit. The probe can also be calibrated (factory only) for
use with a digital voltmeter with 10 MΩ input impedance.
WARNING: many digital voltmeters change input impedance
when the range selection is changed.
1.2 ELECTRICAL SPECIFICATION
INPUT VOLTAGE:
VOLTAGE RATIO:
INPUT IMPEDANCE:
OUTPUT LOADING:
FREQ. RESPONSE:
ACCURACY:
TIPS:
OUTPUT CONNECTOR:
50 kV maximum
1000:1 / 10000:1
1000 MΩ (+/− 15%)
>10 GΩ for high Z calibration
10 MΩ (W/10 MΩ option )
.25dB @ 60Hz (typical)
< 0.05% 0 to 50kV
CORONA BALL & POINTED
BNC
OPERATING INSTRUCTIONS
1. Before making voltage measurements, ensure that the probe's
insulated ground wire is electrically connected to earth ground.
Periodically inspect the lead for damage due to misuse or other
damage. WARNING: The full measured voltage could be
present at the probe BNC output connector if the probe is not
solidly connected to earth ground.
2. With the probe properly grounded, connect the probe output
to a DVM with an input Z > 10 GΩ. If using a 10 MΩ calibra-
tion probe, be sure to use only a 10 MΩ input Z digital voltme-
ter. CAUTION: When using a digital voltmeter with the HVP-
250, be sure to avoid meter ranges that present loading other
than the specified meter matching calibration impedance.
Check the DVM manual to be sure. Most DVM's present an
input Z of 10 MΩ on input ranges over 10 volts.
3. Mount the selected probe tip to the probe. Turn the tip clock-
wise until it seats against the probe body.
4. Set the voltmeter to the proper range. The divider ratio is
1000:1. Ten volts on the DVM represents 10kV, the divider
ratio is 10000:1 One volt on the DVM represents 10kV at the
test point. Proceed with the measurement.
5. If desired, the probe may be semi-permanently mounted in a
measurement system by means of the two 8-32 inserts in the
handle guard. These inserts are electrically isolated. Do not use
these inserts as a ground connection.
6. Your divider probe is a precision instrument. Please store the
probe, accessories, and manual in the instrument case. If you do
not have an instrument case we suggest you order one through
customer service at (503) 598-9595.