ABB REL650 Applications Manual page 252

Section 7
Current protection
246
IEC06000440 V1 EN
Figure 119: 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 151.
Minimum recommended setting is 1.0% of S
minimum IED pickup current shall be at least 9 mA secondary.
= × ×
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°. 180° should be used for generator reverse power protection in 50Hz
network while -179.5° should be used for generator reverse power protection in 60Hz
network. This angle adjustment in 60Hz networks will improve accuracy of the power
function.
Q
Operate
Power1(2)
Angle1(2)
. Note also that at the same time the
N
1MRK 506 334-UUS A
P
en06000440.vsd
(Equation 151)
Application manual