Hioki Power HiTester 3193, Instruction Manual

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16.2 Notes on Use
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16.2 Notes on Use
・
The 9602 is a factory-fitted option. It therefore requires the 3193 unit for
calibration or repair.
・
For accurate measurement, allow one hour for warming up before use.
・
It may not be possible to obtain accurate measurements close to a
transformer or conductor carrying a large high-frequency current, or close to
any device such as a radio transmitter generating a strong magnetic field.
・ The 9602 active power measurement unit operates with an auto-zero circuit
at 2.442 kHz. For this reason, an input signal with a frequency of 2.442 kHz
will result in a periodically fluctuating display indication.
・ When measuring a high frequency voltage to earth (for example the
secondary side of an inverter), errors may occur in the measurement values.
・
Limits are specified for the range in which voltage and current level
accuracies are guaranteed, depending on the input frequency.
・
The guaranteed accuracy ranges of frequency depend on the response,
coupling mode, and low-pass filter settings.
・
When the 9602 is used with an AC-only current sensor, the 9602 functions
only as an AC power meter. In this case, AC coupling is automatically used
for the voltage measurement, and a DC voltage cannot be measured.
・
The current sensor which can be combined with the 9602
AC sensor
9270 CLAMP ON SENSOR (20 AAC)
9271 CLAMP ON SENSOR (200 AAC)
9272 CLAMP ON SENSOR (20/200 AAC)
9272-10 CLAMP ON SENSOR (20/200 AAC)
AC/DC sensor
9277 UNIVERSAL CLAMP ON CT (20 A AC/DC)
9278 UNIVERSAL CLAMP ON CT (200 A AC/DC)
9279 UNIVERSAL CLAMP ON CT (500 A AC/DC)
CT6862 AC/DC CURRENT SENSOR (50 A AC/DC)
CT6863 AC/DC CURRENT SENSOR (200 A AC/DC)
9709 AC/DC CURRENT SENSOR (500 A AC/DC)
CT6865 AC/DC CURRENT SENSOR (1000 A AC/DC)
・
Set the low-pass filter (LPF) to 300 kHz.
・
Depending on the response setting, display may not stabilize during
measurement of low frequencies. If this occurs, use averaging.