Examples How To Connect, Configure And Set Vt Inputs For Most Commonly Used Vt Connections; Examples On How To Connect A Three Phase-To-Ground Connected Vt To The Ied - ABB Relion 670 Series Applications Manual

1MRK 511 358-UUS A
4.2.4.2 Examples how to connect, configure and set VT inputs for most commonly
used VT connections
Figure 31
+
V
Pri
ANSI11000175 V1 EN-US
Figure 31:
Where:
a)
b)
c)
d)
It shall be noted that depending on national standard and utility practices the rated secondary
voltage of a VT has typically one of the following values:
• 100 V
• 110 V
• 115 V
• 120 V
• 230 V
The IED fully supports all of these values and most of them will be shown in the following
examples.
4.2.4.3 Examples on how to connect a three phase-to-ground connected VT to the
IED
Figure 32
It as well gives overview of required actions by the user in order to make this measurement
available to the built-in protection and control functions within the IED.
Application manual
defines the marking of voltage transformer terminals commonly used around the world.
+
A
(H1)
V
Sec
N
(H2)
a) b)
Commonly used markings of VT terminals
is the symbol and terminal marking used in this document. Terminals marked with a square indicate the
primary and secondary winding terminals with the same (positive) polarity
is the equivalent symbol and terminal marking used by IEC (ANSI) standard for phase-to-ground
connected VTs
is the equivalent symbol and terminal marking used by IEC (ANSI) standard for open delta connected
VTs
is the equivalent symbol and terminal marking used by IEC (ANSI) standard for phase-to-phase
connected VTs
gives an example on how to connect the three phase-to-ground connected VT to the IED.
For correct terminal designations, see the connection diagrams valid for the
delivered IED.
a da
A
(X1) (X1)
(H1)
dn
n N
(X2) (H2) (X2)
c)
Analog inputs
SEMOD55055-60 v5
a
A
(X1)
(H1)
B b
(H2) (X2)
d)
ANSI11000175_1_en.vsd
Section 4
SEMOD55055-87 v8
83