Baur PGK 110 HB, Руководство по эксплуатации, Страница: 9 / 34

1-3
1. Product Information
The mA-meter is connected into the H.V. circuit on earth side.
D.C. operation:
The mA-meter shows the arithmethic mean value of the output
current.
A.C. operation: (option with PGK 260 HB)
The rectification value of the A.C. is measured by the instrument.
However, the display shows the appropriate rms value. That’s why
there can be deviations of the displayed value from the true rms
value if the measured current is not sinusoidle. During no-load the
mA-meter shows the current which flows via the self-capacitance of
the H.V. transformer. Must be considered during measurements on
test objects.
The kV-meter is connected to a tapping of the H.V. winding and is
current-compensated. The compensation is balancing the voltage
drop at the internal resistance of the test instrument.
D.C. operation:
The kV-meter shows the peak value of the output voltage. If the
self-capacitance of the test object is very low it is possible that the
insulation current of the test object results in a high ripple. In this
case, note that the displayed value and the arithmetic mean value
of the test voltage can be clearly different.
Display during A.C. operation:
(option with PGK 260 HB)
As with the mA-meter the kV-meter also measures the rectification
value and displays the rms value.
kV - meter
mA - meter