ABB RELION 670 SERIES REG670 Applications Manual page 297

1MRK 502 071-UUS A
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Application manual
Z
B
IEC07000015 V2 EN-US
Figure 141: Impedances to be set for pole slip protection PSPPPAM (78)
The setting parameters of the protection
are:
Z
A
Z
B
Z
C
AnglePhi
Use the following generator data:
VBase : 20 kV
SBase set to 200 MVA
X ': 25%
d
Z
X
A
Z
C
anglePhi
Block transformer + source impedance in the forward direction
The generator transient reactance
The block transformer reactance
The impedance phase angle
Section 8
Impedance protection
Apparent
impedance at
normal load
R
IEC07000015_2_en.vsd
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