Name
Range
Step
Default
Functions
Description
HV side Star
or Zigzag /
Delta
0: Star/Zigzag
1: Delta
-
0: Star/
Zigzag
- transformer status
monitoring
- transformer
differential
The selection of the HV side connection. Can
be selected between star or zigzag and delta.
This selection is visible only if the option
"Manual set" is selected for the vector group
setting.
HV side
earthed
0: Not earthed
1: Earthed
-
0: Not
earthed
- transformer status
monitoring
- transformer
differential
The selection of whether or not the zero
sequence compensation is applied in the HV
side current calculation. The selection is
visible only if the option "Manual set" is
selected for the vector group setting.
HV side lead
or lag LV
0: Lead
1: Lag
-
0: Lead
- transformer status
monitoring
- transformer
differential
The selection of whether the HV side leads or
lags the LV side. The selection is visible only if
the option "Manual set" is selected for the
vector group setting.
LV side Star
or Zigzag /
Delta
0: Star/Zigzag
1: Delta
-
0: Star/
Zigzag
- transformer status
monitoring
- transformer
differential
The selection of the LV side connection. Can
be selected between star or zigzag and delta.
This selection is visible only if the option
"Manual set" is selected for the vector group
setting.
LV side
earthed
0: Not earthed
1: Earthed
-
0: Not
earthed
- transformer status
monitoring
-
transformer differential
The selection of whether or not the zero
sequence compensation is applied in the LV
side current calculation. The selection is
visible only if the option "Manual set" is
selected for the vector group setting.
LV side lead
or lag HV
0: Lead
1: Lag
-
0: Lead
- transformer status
monitoring
- transformer
differential
The selection of whether the LV side leads or
lags the HV side. The selection is visible only
if the option "Manual set" is selected for the
vector group setting.
HV-LV side
phase angle
0.0...360.00deg 0.1deg
0.0deg
- transformer status
monitoring
- transformer
differential
The angle correction factor for HV/LV sides,
looked from the HV side. E.g. if the
transformer is Dy1, this is set to 30 degrees.
The selection is visible only if the option
"Manual set" is selected for the vector group
setting.
HV-LV side
mag
correction
0.0…100.0xI
n
0.1xI
n
0.0xI
n
- transformer status
monitoring
- transformer
differential
The magnitude correction for the HV-LV side
currents (in p.u.), if the currents are not
directly matched through the calculations of
the nominal values. The selection is visible
only if the option "Manual set" for the vector
group setting.
Check
online HV-LV
configuration
0: -
1: Check
-
0: -
- transformer status
monitoring
- transformer
differential
The selection of whether or not the function
checks the current going through the
transformer and then compares it to the
settings. For this to work, the transformer
needs to have a current flowing on both sides
and "see" no faults. The selection is visible
only if the option "Manual set" is selected for
the vector group setting.
Table. 5.3.16 - 142. Calculations of the transformer status monitoring function.
Name
Range
Step
Default Functions
Description
HV side
nominal
current (pri)
0.01...50 000.00A
0.01A
0.00A
Info
The calculated primary current of the transformer's
HV side primary current.
HV side
nominal
current (sec)
0.01…250.00A
0.01A
0.00A
Info
The calculated primary current of the transformer's
HV side secondary current.
HV CT nom. to
TR nom. factor 0.01…250.00p.u.
0.01p.u. 0.00p.u. Info
The transformer's HV side calculated nominal to
the CT primary rate.
A
AQ
Q-T215
-T215
Instruction manual
Version: 2.04
207