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

Section 6
Connecting
properly connected to the station earthing system. Use a conductor with a core cross section
area of at least 4 mm
The protective earthing terminal is also the functional earth terminal. The functional earth is
the reference for rotor injection and measurement. The connection to the generator earthing,
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 6 mm
Protective conductor terminal must be connected to the cubicle or station protective earthing
system. Electrical codes and standards require that protective earth cables are green/yellow
conductors with a cross section area of at least 2.5 mm
properly connected to the station earthing 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.
1. The recommended connection require four analog channels of the IED: two IED voltage
channels are used for the measured quantities for ROTIPHIZ; two more IED voltage
channels are used for the measured quantities for STTIPHIZ.
62
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 35 - AWG 3) wire or with two 0.14 to 1.5 mm
2
(AWG 12).
Signal
2
(AWG 35 - AWG 15) wires.
2
(AWG 14). The cubicle must be
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Installation manual