1.1 Introduction
GDKF is a full automatic tester for load characteristic testing
of power transformer. It is small, light and easy to use. Large
size LCD used to display the test result. All the test result
can be saved in the tester and printed by the micro-printer
internal the tester.
1.2 Function
1) RMS value measurement for ,
and
2) Compute the RMS value for ,
and based on average value of the three voltage
3) Current measurement for ,
and
4) No load losses and Load losses
measurement
5) Excitation current in no load
condition
6) Impedance voltage
7) Impedance in short current
8) Test range from *0KVA to
2.5MVA in single unit.
9) Add PT and CT in separate for
the tester will extend its test range.
1.3 Technique Index
1) Measurement range for current
is 0.1A to *0A. The maximum error are less then 0.3%
2) Measurement range for voltage
is *0V to **0V. The maximum error are less then 0.3%
3) The maximum error for power
measurement are less then 0.2%
4) The maximum error for
frequency of output voltage is less then 0.2%
5) Power supply AC**0V/*0Hz±*0%
