ABB RELION 670 Series Applications Manual page 452

Section 8
Current protection
The function has two stages that can be set independently.
With the parameter
The function gives trip if the power component in the direction defined by the setting
Angle1(2) is larger than the set pick up power value Power1(2)
IEC06000440 V1 EN-US
Figure 270: Overpower mode
The setting
setting is given in p.u. of the generator rated power, see equation 485.
Minimum recommended setting is 0.2% of S
used.
=
S
N
EQUATION1708 V1 EN-US
The setting
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.
446
OpMode1(2) the function can be set On / Off .
Q
Power1(2)
Power1(2) gives the power component pick up value in the Angle1(2) direction. The
× ×
3 UBase IBase
Angle1(2) gives the characteristic angle giving maximum sensitivity of the power
Operate
Angle1(2)
when metering class CT inputs into the IED are
N
1MRK 504 152-UEN B
P
en06000440.vsd
(Equation 485)
Application manual