ABB REB670 Applications Manual page 219

1MRK 505 337-UUS -
Application manual
Operate
IEC06000441 V1 EN
Figure 93: Underpower 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 54.
Minimum recommended setting is 0.2% of S
are used.
= × ×
S 3 VBase IBase
N
EQUATION2047 V1 EN
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°. 0° should be used for generator low forward active power protection.
Q
Power1(2)
Angle1(2)
when metering class CT inputs into the IED
N
Section 7
Current protection
P
en06000441.vsd
(Equation 54)
213