Table of Contents
Advertisement
Section 9
Current protection
414
Mode: The voltage and current used for the power measurement. The setting
possibilities are shown in table 42.
Table 42:
Complex power calculation
Mode
Set value
A,B,C
Arone
PosSeq
A,B
B,C
C,A
A
B
C
The function has two stages that can be set independently.
With the parameter OpMode1(2) the function can be set Enabled/Disabled.
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)
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Formula used for complex power calculation
*
*
=
×
+
×
S
V
I
V
I
A
A
B
B
EQUATION2038 V1 EN-US
*
-
=
×
×
S
V
I
V
AB
A
BC
EQUATION2039 V1 EN-US
*
= ×
×
S
3 V
I
PosSeq
PosSeq
EQUATION2040 V1 EN-US
*
*
-
=
×
)
S
V
(I
I
AB
A
B
EQUATION2041 V1 EN-US
*
*
-
=
×
)
S
V
(I
I
B
C
BC
EQUATION2042 V1 EN-US
*
*
-
=
×
)
S
V
(I
I
CA
C
A
EQUATION2043 V1 EN-US
*
= ×
×
S 3 V
I
A
A
EQUATION2044 V1 EN-US
*
= ×
×
S
3 V
I
B
B
EQUATION2045 V1 EN-US
*
= ×
×
S
3 V
I
C
C
EQUATION2046 V1 EN-US
1MRK 502 071-UUS A
*
+
×
V
I
C
C
(Equation 219)
*
I
C
(Equation 220)
(Equation 221)
(Equation 222)
(Equation 223)
(Equation 224)
(Equation 225)
(Equation 226)
(Equation 227)
Application manual
Advertisement
Table of Contents
