Omicron Lab CT Analyzer User Manual page 88

CT Analyzer User Manual
86
Parameter Description
Rprim Specified primary winding resistance (only available if primary winding
resistance measurement is enabled for the test).
Possible values: 0 to 3000 ohms or soft key ?
Default: ?.
Class mult. Class multiplying factor.
factor
This factor increases the assessment level for the ratio test. E.g. a class
multiplier of 0.5 means that the maximum accepted tolerance for the ratio
error is only half the standard tolerance.
Possible values: 0.25 to 1.00 or soft key 1.0.
Default: 1.0 (as set in the device settings: Main Menu, entry "Settings" ->
Setting Menu, entry "Misc. Settings").
Delta com- Correction factor for the ratio measurement. This factor enables the ratio
pensation measurement for CTs that are installed inside a delta winding transformer.
Possible values: Soft keys Ratio 1, Ratio 2/3 or Ratio 1/3.
Default: Ratio 1.
Choose "Ratio 1" if no correction is required.
Choose "Ratio 2/3" if input PRIM is connected to the two terminals of that
transformer winding, the CT is in series with.
Choose "Ratio 1/3" if input PRIM is connected to the terminals of a
transformer winding, the CT is not in series with.
1. If the question mark is entered for this parameter and a new test is started, the CT Analyzer
automatically tries to determine the value using its integrated guesser function (see chapter 7 on
page 131).
1
.