ABB REB670 - Page 232

Operate
Angle1(2)
Power1(2)
P
Q
en06000441.vsd
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
N
when metering class CT inputs into the
IED are used.
N
S 3 VBase IBase= × ×
EQUATION2047 V1 EN-US (Equation 51)
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.
Section 7 1MRK 505 370-UUS A
Current protection
226 Busbar protection REB670 2.2 ANSI
Application manual