Section 10
Testing functionality by secondary injection
106
Table 18:
Calculation modes
Mode
Set value:
L1, L2, L3
Arone
PosSeq
L1L2
L2L3
L3L1
L1
L2
L3
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 Angle1 + 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.
Formula used for complex power calculation
*
*
=
×
+
×
S
U
I
U
I
L
1
L
1
L
2
L
2
EQUATION1697 V1 EN-US
*
=
×
-
×
S
U
I
U
L L
1 2
L
1
L L
2 3
EQUATION1698 V1 EN-US
*
= ×
×
S
3
U
I
PosSeq
PosSeq
EQUATION1699 V1 EN-US
*
*
=
×
-
S
U
(
I
I
)
L L
1 2
L
1
L
2
EQUATION1700 V1 EN-US
*
*
=
×
-
S
U
(
I
I
)
L L
2 3
L
2
L
3
EQUATION1701 V1 EN-US
*
*
=
×
-
S
U
(
I
I
)
L L
3 1
L
3
L
1
EQUATION1702 V1 EN-US
*
= ×
×
S
3
U
I
L
1
L
1
EQUATION1703 V1 EN-US
*
= ×
×
S
3
U
I
L
2
L
2
EQUATION1704 V1 EN-US
*
= ×
×
S
3
U
I
L
3
L
3
EQUATION1705 V1 EN-US
1MRK 505 372-UEN A
*
+
×
U
I
L
3
L
3
(Equation 4)
*
I
L
3
(Equation 5)
(Equation 6)
(Equation 7)
(Equation 8)
(Equation 9)
(Equation 10)
(Equation 11)
(Equation 12)
Busbar protection REB670 2.2 IEC
Commissioning manual