ABB Relion 670 series - Completing the Test; Directional Underpower Protection GUPPDUP (37); Verifying the Settings

11.5.12.2 Completing the test
SEMOD55625-106 v4
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.5.13 Directional underpower protection GUPPDUP (37)
SEMOD175027-3 v5
Prepare the IED for verification of settings as outlined in section
"Requirements" and section "Preparing
for test" in this chapter.
11.5.13.1 Verifying the settings
SEMOD175027-7 v7
The underpower protection shall be set to values according to the real set values to be used.
The test is made by means of injection of voltage and current where the amplitude of both current and
voltage and the phase angle between the voltage and current can be controlled. During the test, the
analog outputs of active and reactive power shall be monitored.
1. Connect the test set for injection of voltage and current corresponding to the mode to be used in
the application. If a three-phase test set is available this 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 38: Calculation modes
Set value:
Mode Formula used for complex power calculation
A, B, C
* * *
A A B B C C
S V I V I V I= × + × + ×
EQUATION2055 V1 EN-US (Equation 84)
Arone
* *
AB A BC C
S V I V I= × - ×
EQUATION2056-ANSI V1 EN-US (Equation 85)
PosSeq
*
3
PosSeq PosSeq
S V I= × ×
EQUATION2057-ANSI V1 EN-US (Equation 86)
AB
* *
( )
AB A B
S V I I= × -
EQUATION2058-ANSI V1 EN-US (Equation 87)
BC
* *
( )
BC B C
S V I I= × -
EQUATION2059-ANSI V1 EN-US (Equation 88)
Table continues on next page
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 189
Commissioning manual
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