ABB REL650 series, Applications Manual

Page: 108 / 516

A
IED
B
C
66
3
110
3
kV
V
4 1
3
2
66
3
110
3
kV
V
66
3
110
3
kV
V
ANSI11000031-3-en.vsd
SMAI_20_2
BLOCK
REVROT
^GRP2_A
^GRP2_B
^GRP2_C
^GRP2_N AI3P
AI1
AI2
AI3
AI4
AIN
ANSI11000031 V3 EN
Figure 43: A Three phase-to-ground connected VT
Where:
1) shows how to connect three secondary phase-to-ground voltages to three VT inputs on the IED
2) is the TRM where these three voltage inputs are located. For these three voltage inputs, the
following setting values shall be entered:
VTprim =66 kV
VTsec = 110 V
Inside the IED, only the ratio of these two parameters is used. It shall be noted that the ratio of
the entered values exactly corresponds to ratio of one individual VT.
66
66
3
110
110
3
=
EQUATION1903 V1 EN
(Equation 34)
Table continues on next page
Section 4
1MRK 506 334-UUS A
Analog inputs
102
Application manual