Manually Entering Coefficients; Downloading Curves - ABB DPU 1500R Instruction Book

ABB Distribution Protection Unit 1500R

Manually Entering Coefficients

Step 1: If desired, the user may enter a description in the Description field.
Step 2: Under Standard, select ANSI or IEC.
Step 3: Under Data Entry Method select Manually Enter Coefficients.
Step 4: The user can now enter the known coefficients A, B, C and P.
Step 5: Under Curve Series, select Default. Time dial 1 through 10 should appear on the screen for ANSI or 0.05
to 1 for IEC. Any combination of valid time dials can be used.
Step 6: Select Apply. At this point, a graph will appear on the screen. The graph format can be changed by
selecting different options under the Graph Menu at the top of the screen. The Curves can also be printed
for a clearer view.
Step 7: If you are satisfied with the results, select Save As under File and type in a filename with a .crv extension.
This is the file to be used when downloading curves to your DPU1500R relay.
Step 8: the user also has the ability to save the worksheet. To do this select Save Worksheet As under File and
type in a filename with a .wrk extension.

Downloading Curves

By using the File Export, you can send (transmit) curve data that you have created via the CurveGen program from your
computer to the DPU1500R. You can also download (receive) curve data from the DPU1500R into your computer for
storage and for modification through the CurveGen program.
To transmit or receive curve data, highlight the selection you want and press Enter. Type in the curve's filename (including
all directories) and press Enter again. The curve data is sent or retrieved as you selected.
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Optional Features