ABB REG670 Applications Manual page 385

1MRK 502 071-UEN -
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
Set value Mode
L1
L2
L3
The function has two stages that can be set independently.
With the parameter OpMode1(2) the function can be set On/Off.
The function gives trip if the power component in the direction defined by the setting
Angle1(2) is smaller than the set pick up power value Power1(2)
Operate
IEC06000441 V1 EN
Figure 196: 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 222.
Minimum recommended setting is 0.2% of S
IED are used.
Formula used for complex power calculation
= ×
S 3 U
EQUATION1703 V1 EN
= ×
S 3 U
EQUATION1704 V1 EN
= ×
S 3 U
EQUATION1705 V1 EN
Q
Power1(2)
Angle1(2)
when metering class CT inputs into the
N
Section 9
Current protection
*
×
I
L 1 L 1
(Equation 219)
*
×
I
L 2 L 2
(Equation 220)
*
×
I
L 3 L 3
(Equation 221)
P
en06000441.vsd
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