Marathon Electric DVR 2000E+ - Page 52

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Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
No Droop
Step 1. Verify that the DVR
®
2000E+ DROOP_OFF contact input is open.
If the DROOP_OFF contact input is not open, it must be opened to enable the droop function.
If the DROOP_OFF contact input is open, proceed to Step 2.
Step 2. Verify that the DVR
®
2000E+droopsettingisnotadjustedto0%droop.
  Ifthedroopsettingisadjustedto0%droop,increasethesetpointabove0%.
  Ifthedroopsettingisadjustedtoabove0%,proceedtoStep4.
Step 3. Check for an open in the circuit connected to any CTs used for current sensing.
If there is an open circuit, repair as necessary.
If there is no open circuit, proceed to Step 5.
Step 5. Verify that all connections are correct according to Figures 4-? and 4-?.
If connections are incorrect, correct the problem.
If connections are correct, proceed to Step 6.
Step 6. Verify that the load being applied to the generator for droop testing is not purely resistive.
If only a resistive load is being applied to the generator, apply an inductive load and retest.
If the load being applied to the generator is inductive, proceed to Step 7.
Step 7. Verify that the DVR
®
2000E+ is compatible with the current sensing transformer (5 A secondary) being
used. For example, a current sensing transformer with a 1 ampere output rating would produce very little
droop since your DVR
®
2000E+ has a 5 ampere current transformer input.
If the current transformer input is incorrect, replace the current sensing transformer for compatibility.
If the current transformer input is correct, proceed to Step 8.
Step 8. Further system troubleshooting may be required. If it is determined that the rest of the system is not the
source of the problem, the DVR
®
2000E+ may need to be replaced.