Appendix F A662012 HV Measurement Kit
E-1
Appendix F A662012 HV Measurement Kit
When the 66203/66204 Digital Power Meter is used with the A662012 HV Measurement Kit,
the maximum measured voltage can be increased up to 1200V. The A662012 is only
applicable for measuring DC and the voltage signals within the frequency range of
47Hz~63Hz as well as the HV function of the 66203/66204 Digital Power Meter. In other
words, Chroma cannot guarantee the overall measurement accuracy if the HV function is
performed using the measurement fixture made by the user.
It is necessary to add 0.2% measurement error to the reading error spec. when using the
66203/66204 Digital Power Meter with the A662012. When calculating the measurement
error spec., the actual measurement range should change to 1200V/600V/300V/120V/60V/
30V; however, the A662012 is mainly for high voltage measurement use thus to get the best
measurement accuracy, it is suggested not to use the A662012 for measuring the voltage
under 600V.
Following is the example of measurement error spec. calculation:
Assuming the 600V range of the 66204 is used with the A662012 to measure the 1000V
voltage signal, the measurement error spec. is calculated as below:
± {(0.2%+0.1%) ×1000V+0.08%×1200V} = ±3.96V
WARNING
1. Please use the measurement cable with enough insulating intensity
on the input side to ensure the usage safety.
2. Do not change the measurement cable of the power meter to
ensure the usage safety.
3. Do not disassemble the device or modify its internal parts to ensure
the usage safety.
4. Do not change the length of the Power Meter’s measurement cable
or it may affect the measurement accuracy.
5. If an external shunt is used to work with the A662012 for power
measurement, please be aware that the maximum allowed voltage
difference of current input terminal (I+, I-) to the GND is 600Vrms,
or dangerous may occur.
6. It is suggested to use an external current sensor with insulation (CT
or DC CT) to work with the A662012 for power measurement and to
ensure the usage safety.
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