ABB REG670 Applications Manual page 302

Section 8
Impedance protection
296
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.
IED
VOLTAGE MEASURE (U)
CURRENT MEASURE (U)
VOLTAGE MEASURE (U)
CURRENT MEASURE (U)
IEC11000209 V1 EN
Figure 156: Separate analog inputs for stator STTIPHIZ and rotor ROTIPHIZ
protection
2. It is possible to use a mixed connection that requires only two IED voltage
channels for both ROTIPHIZ and STTIPHIZ. REX060 outputs are connected in
series. This connection is not recommended and can be used only in applications
where it is prove the possibility to use it. the use of this connection leads to
reduced performances of both ROTIPHIZ and STTIPHIZ.
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
1MRK 502 071-UEN -
REX060
X61
8
9
STATOR MODULE SIM
10
11
X81
8
9
ROTOR MODULE RIM
10
11
IEC11000209-1-en.vsd
Application manual