Hitachi Relion REB670 Commissioning Manual page 100

Section 10
Testing functionality by secondary injection
Table 18:
Set value: Mode
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.
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
94
Calculation modes
Formula used for complex power calculation
=
S U
L
EQUATION1697 V1 EN-US
=
S U
L L
EQUATION1698 V1 EN-US
= ×
S 3 U
EQUATION1699 V1 EN-US
=
S U
L L
EQUATION1700 V1 EN-US
=
S U
L L
EQUATION1701 V1 EN-US
=
S U
L L
EQUATION1702 V1 EN-US
= ×
S 3
EQUATION1703 V1 EN-US
= ×
S 3 U
EQUATION1704 V1 EN-US
= ×
S 3 U
EQUATION1705 V1 EN-US
© 2017 - 2022 Hitachi Energy. All rights reserved
* *
× + × + ×
I U I U I
1 L 1 L 2 L 2 L 3
* *
× - ×
I U I
1 2 L 1 L L 2 3 L 3
*
×
I
PosSeq PosSeq
* *
× -
( I I )
1 2 L 1 L 2
* *
× -
( I I )
2 3 L 2 L 3
* *
× -
( I I )
3 1 L 3 L 1
*
×
U I
L 1 L 1
*
×
I
L 2 L 2
*
×
I
L 3 L 3
2 to 6 for the second stage.
1MRK 505 372-UEN Rev. K
*
L 3
(Equation 4)
(Equation 5)
(Equation 6)
(Equation 7)
(Equation 8)
(Equation 9)
(Equation 10)
(Equation 11)
(Equation 12)
Busbar protection REB670
Commissioning manual