ABB RET670 - Page 495

Operate
Angle1(2)
Power1(2)
P
Q
en06000440.vsd
IEC06000440 V1 EN
Figure 209: Overpower mode
The setting Power1(2) gives the power component pick up value in the Angle1(2)
direction. The setting is given in p.u. of the generator rated power, see equation 393.
Minimum recommended setting is 0.2% of S
N
when metering class CT inputs into the
IED are used.
N
S 3 VBase IBase= × ×
EQUATION2047 V1 EN (Equation 393)
The setting Angle1(2) gives the characteristic angle giving maximum sensitivity of the
power protection function. The setting is given in degrees. For active power the set
angle should be 0° or 180°. 180° should be used for generator reverse power protection.
1MRK504116-UUS C Section 3
IED application
489
Application manual