Protective Elements
Commissioning: delta phi - Vector Surge
Object to be tested:
All frequency protection stages that are projected as delta phi (vector surge).
Necessary means:
Three-phase voltage source that can generate a definite step (sudden change) of the voltage pointers
(phase shift).
Procedure:
Testing the threshold values
Apply a vector surge (sudden change) that is 1.5 times the setting value (example: if the setting value is 10°
apply 15°).
Successful test result:
Permissible deviations/tolerances and dropout ratio can be taken from the Technical Data.
926 MCDGV4 DOK-HB-MCDGV4-2E
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