Delta supervision function has 6 different modes of operation. Proceed as follows to test the function in a
particular mode.
1. Set the following parameters:
• Operation = Enabled
• MeasMode = Phase-to-ground
• Umin = 10% of VBase
• DelU> = 50% of VBase
• DelUang> = 10°
• DeltaT = 2
• tHold = 100
2. Set the constant voltage input of UL1 = 63.5V at 0° and UL2 = 63.5V at 120° and UL3 at 63.5 -120°
secondary at rated frequency.
3. Based on the mode of operation, carry out the following changes on input condition of Step
2 to
detect pickup condition.
Each mode is given for increase and decrease operation. (3-a and 3-b)
Step No. OpMode Changes after step 2 Expected output
3-a Instantaneous 1
cycle or
Instantaneous 2
cycle
Change UL1 to 20V STL1 , STLOW, BFI_3P signal should be
TRUE for 100 ms
3-b Instantaneous 1
cycle or
Instantaneous 2
cycle
Change UL1 back to 63.5V STL1 , STRISE, BFI_3P signal should be
TRUE for 100 ms
3-a RMS or DFT Mag Change UL1 to 20V STL1, STLOW, BFI_3P signal should be
TRUE for 100 ms
3-b RMS or DFT Mag Change UL1 back to 63.5V STL1 , STRISE, BFI_3P signal should be
TRUE for 100 ms
3-a DFT Angle (vector
shift)
Change UL1 to 63.5V at 15°
without changing frequency
STL1, BFI_3P signal will be TRUE for 100 ms.
3-b DFT Angle (Vector
shift)
Change UL1 to 63.5V at 0°
without changing frequency
STL1, BFI_3P signal will be TRUE for 100 ms
4. Repeat Step 3 with UL2 changes for different mode.
11.10.4.2 Completing the test
GUID-2FE5E5F0-0E6C-499E-93D2-471C183B89BF v2
Continue to test another function or end the test by changing the TestMode setting to Disabled. Restore
connections and settings to their original values, if they were changed for testing purposes.
11.10.5 Current based delta supervision DELISPVC(7I)
GUID-9EAEFF02-62C2-4FA7-8F3D-E92391206F7F v2
Prepare the IED for verification of settings outlined in Section "Preparing the IED to verify settings".
11.10.5.1 Verifying the signals and settings
GUID-86324E4D-E054-495F-9D64-29741FBD8CBE v2
Make sure that the function is connected to SMAI function with I3P signal.
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 239
Commissioning manual
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