ABB RET670 Commissioning Manual page 198

Section 11
Testing functionality by secondary injection
192
could be used for all the modes. If a single-phase current/voltage test set is
available the test set should be connected to a selected input for one-phase
current and voltage.
Table 36: 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.
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
Transformer protection RET670 2.2 IEC
1MRK 504 165-UEN A
*
+ ×
U I
L 3 L 3
(Equation 80)
*
I
L 3
(Equation 81)
(Equation 82)
(Equation 83)
(Equation 84)
(Equation 85)
(Equation 86)
(Equation 87)
(Equation 88)
Commissioning manual