Connecting And Setting Voltage Inputs - ABB Relion 670 Series Installation Manual

1MRK 514 026-UUS F
X2 connector. Connect each signal connector terminal of screw compression type with one 0.5 to
2
2.5 mm
Protective conductor terminal must be connected to the cubicle or station protective grounding
system. Electrical codes and standards require that protective ground cables are green/yellow
conductors with a cross section area of at least 2.5 mm
connected to the station grounding system. Use a conductor with a core cross section area of at
least 4 mm
The protective grounding terminal is also the functional ground terminal. The functional ground is
the reference for rotor injection and measurement. The connection to the generator grounding,
and also to the station, should be as short and low impedance as possible to reduce unwanted
disturbances and improve the quality of rotor measurements.
REX062 Shunt resistor unit connections
Table 18:
No
1
2
3
4
5
6
7
8
9
10
X1 connector. Connect each signal connector terminal of screw compression type with one 0.14 to
2
6 mm (AWG 35 - AWG 3) wire or with two 0.14 to 1.5 mm
Protective conductor terminal must be connected to the cubicle or station protective grounding
system. Electrical codes and standards require that protective ground cables are green/yellow
conductors with a cross section area of at least 2.5 mm
connected to the station grounding system. Use a conductor with a core cross section area of at
least 4 mm
6.2.3

Connecting and setting voltage inputs

The RIM module of REX060 has two analog output channels that shall be connected to two voltage
input channels of the IED.
If both stator and rotor protection are used, there are two possible methods to perform the
connection.
670 series
Installation manual
(AWG 24 - AWG 14) wire or with two 0.5 to 1.0 mm
2
(AWG 12).
Injection via shunt resistors connection X1
-
Injection
-
Injection return
-
Current sense output
-
Current sense output
Injection input, External shunt
Injection input return, External shunt
2
(AWG 12).
2
(AWG 24 - AWG 18) wires.
2
(AWG 14). The cubicle must be properly
Signal
2
(AWG 35 - AWG 15) wires.
2
(AWG 14). The cubicle must be properly
GUID-BE3E0554-3E96-4489-B8C9-E62953853BB7 v4
Section 6
Connecting
63