Satec BFM 136 - Transformer Correction

Chapter 4 PAS Application Software General Meter Setup
Branch Feeder Monitor 136_Installation Operation and Manual 47
4.6.3 Transformer Correction
Transformer correction allows you to compensate ratio and phase angle inaccuracies of the user voltage
transformers and SATEC current sensors (HACS) instrument.
To enter the setup dialog, select the device site from the list box
3
on the PAS toolbar, and then select
Transformer Correction from the Meter Setup menu.
If you use standard current transformers listed in the last table column, select a transformer type to preset
the transformer ratio correction factor and phase angle error to their typical values.
The following table lists available options.
Parameter
Options
Default
Description
Ratio Correction Factor
0.700 to 1.300
1.000
The ratio of the true transformer ratio to the marked ratio.
Phase Angle Error,
minutes
-600 to 600
0
The phase displacement, in minutes, between the primary and
secondary values. The phase angle of a transformer is
positive when the secondary value leads the primary value.
3
- User CT option is not recommended, it doesn’t guaranty proper measurement
- LEM and THI transformer type options are no more manufactured.