Completing The Test - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
NO TRIP signal should appear due to symmetrical condition.
14. Deactivate the CLOSECMD. Decrease one current with 120% of the current unsymmetrical
level compared to the other two phases. Activate CLOSECMD and measure the operating
time of the CCPDSC (52PD) protection.
Use the TRIP signal from the configured binary output to stop the timer.
15. Deactivate the CLOSECMD. Decrease one current with 80% of the current unsymmetrical
level compared to the other two phases. Activate CLOSECMD.
NO TRIP signal should appear.
10.5.10.2

Completing the test

Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
10.5.11 Directional underpower protection GUPPDUP (37)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
10.5.11.1 Verifying the settings
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 32:
Set value:
A, B, C
Arone
PosSeq
Table continues on next page
Commissioning manual
in this chapter.
Calculation modes
Mode
Formula used for complex power calculation
=
S V
A
EQUATION2055 V1 EN-US
=
S V
AB
EQUATION2056-ANSI V1 EN-US
= ×
S 3 V
EQUATION2057-ANSI V1 EN-US
* *
× + × + ×
I V I V I
A B B C C
* *
× - ×
I V I
A BC C
*
×
I
PosSeq PosSeq
Testing functionality by secondary injection
TestMode setting to Disabled .
"Requirements" and
*
(Equation 80)
(Equation 82)
Section 10
SEMOD55625-106 v4
SEMOD175027-3 v5
SEMOD175027-7 v7
(Equation 81)
155