ABB REB670 Applications Manual page 232

Section 7
Current protection
226
Operate
IEC06000441 V1 EN-US
Figure 103: 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 51.
Minimum recommended setting is 0.2% of S
IED are used.
= × ×
S 3 VBase IBase
N
EQUATION2047 V1 EN-US
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
N
1MRK 505 370-UUS A
P
en06000441.vsd
Busbar protection REB670 2.2 ANSI
Application manual
(Equation 51)