Table 32: Calculation modes
Set value:
Mode
Formula used for complex power calculation
L1, L2, L3
*
*
*
1
1
2
2
3
3
L
L
L
L
L
L
S
U
I
U
I
U
I
=
×
+
×
+
×
EQUATION1697 V1 EN-US
(Equation 80)
Arone
*
*
1 2
1
2 3
3
L L
L
L L
L
S
U
I
U
I
=
×
-
×
EQUATION1698 V1 EN-US
(Equation 81)
PosSeq
*
3
PosSeq
PosSeq
S
U
I
= ×
×
EQUATION1699 V1 EN-US
(Equation 82)
L1L2
*
*
1 2
1
2
(
)
L L
L
L
S
U
I
I
=
×
-
EQUATION1700 V1 EN-US
(Equation 83)
L2L3
*
*
2 3
2
3
(
)
L L
L
L
S
U
I
I
=
×
-
EQUATION1701 V1 EN-US
(Equation 84)
L3L1
*
*
3 1
3
1
(
)
L L
L
L
S
U
I
I
=
×
-
EQUATION1702 V1 EN-US
(Equation 85)
L1
*
1
1
3
L
L
S
U
I
= ×
×
EQUATION1703 V1 EN-US
(Equation 86)
L2
*
2
2
3
L
L
S
U
I
= ×
×
EQUATION1704 V1 EN-US
(Equation 87)
L3
*
3
3
3
L
L
S
U
I
= ×
×
EQUATION1705 V1 EN-US
(Equation 88)
2.
Adjust the injected current and voltage to the set values in % of
IBase and UBase
(converted to secondary current and voltage). The angle between the injected current
and voltage shall be set equal to the set direction
Angle1, angle for stage 1 (equal to 0° for
low forward power protection and equal to 180° for reverse power protection). Check
that the monitored active power is equal to 100% of rated power and that the reactive
power is equal to 0% of rated power.
3.
Change the angle between the injected current and voltage to
90°. Check that
the monitored active power is equal to 0% of rated power and that the reactive power is
equal to 100% of rated power.
4.
Change the angle between the injected current and voltage back to 0°. Decrease the
current slowly until the START1 signal, start of stage 1, is activated.
5.
Increase the current to 100% of
IBase.
6.
Switch the current off and measure the time for activation of TRIP1, trip of stage 1.
7.
If a second stage is used, repeat steps
Section 12
1MRK 502 067-UEN B
Testing functionality by secondary injection
174
Commissioning manual
