Megger Calibrator CAL1 Manual De Usuario página 8

Specifications supplied
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Because the quantity of charge fed in is known, the measuring instrument can calculate
the scale factor between the charge measured at the coupler unit and the actual charge
and then apply it for quantifying the subsequent measurement results.
The calibrator contains a fast surge generator which is connected in series with a
capacitor C . The charge Q
0
surge U via the capacitor C
0
closely to the rise time of the original PD pulses.
Since the calibrator has to be removed from the testing circuit after completion of
calibration, the influence of the calibration capacitor C
be kept very small. Accordingly, IEC 60270 requires that the capacitance of the tested
circuit must be a factor of ten greater that the capacitance of the calibration capacitor
(C < 0,1 C ).
0 a
The product supplied comprises the following components:
Quantity Component
1 Calibrator CAL1
1 Accessories
1 Manual
1 Battery
Check the contents of the package for completeness and visible damage right after
receipt. In the case of visible damage, the device must under no circumstances be taken
into operation. If something is missing or damaged, please contact your local sales
representative.
(C ·U ) is injected into the tested circuit using the voltage
0 0 0
. The rise time of the calibration pulses approximates very
0
Description
1 m connection cable incl. crocodile
clips
9V block
8
on the PD testing circuit has to
0
Item number
2008807
2009408
85623