2.26
SEL-700G Relay
Instruction Manual
Date Code 20170814
Installation
AC/DC Connections and Applications
AC/DC Connections and Applications
Figure 2.17 through Figure 2.22 show ac and dc connection diagrams and
applications for the SEL-700G0, SEL-700G1, SEL-700GT, and SEL-700GW
relays.
Figure 2.17
SEL-700G0 Relay AC Connection Example—High-Impedance Grounded Generator
Without Current Differential Protection
Figure 2.18
SEL-700G0 Relay AC Connection Example—Solidly Grounded Generator
With Ground Differential Protection (87N)
NOTE:
When the
VS-NS
or
VN-NN
voltage inputs are unused in the
SEL-700G1+ model and the setting
DELTAY_X := DELTA, then one of these
voltage inputs could be used to
connect an external zero-sequence
voltage. In such an application, the
setting EXT3V0_X must also be set
accordingly. Refer to
Protection and Logic Functions
for
more details.
Generator
Phase-Input CTs
A
B
C
C
B
A
Z0
8
Z0
7
Z0
6
Z0
5
Z0
4
Z0
3
Z0
2
Z0
1
Z1
2
Z1
1
Z1
0
Z0
9
IN
IC
X
IB
X
IA
X
VCX
VAX
VBX
N
Z Slot: 4AC1/3 AVI
E Slot: Empty
Wye-Connected PTs
A
B
C
Z0
5
Z0
4
Z0
3
Z0
2
Z0
1
Z0
6
Generator
Z0
8
Z0
7
Z1
2
Z1
1
Z1
0
Z0
9
IN
VCX
VAX
VBX
IC
X
IB
X
IA
X
N
Z Slot: 4AC1/3 AVI
E Slot: Empty
Содержание SEL-700G Series
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