Filter
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TROUBLESHOOTING - continued
GEH-7252 50 May 2003
GE Capacitor & Power Quality Product
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PROBLEM:
Harmonic current distortion exceeds 5% on one or more
phases at full load.
Possible cause:
Solution
Source impedance is less than 1.5%.
Add a minimum 1.5% impedance line reactor to the filter input
Possible cause:
Solution
Input source voltage harmonic distortion.
Identify equipment causing harmonic voltage distortion and add
filters as required or accept elevated THVD
Possible cause:
Solution:
Line voltage unbalance exceeds 1%.
Balance input line voltage to 1% or less.
PROBLEM:
Filter output voltage is not within specification
Possible cause:
Filter input voltage is not within specification.
Solution:
Check the AC input line voltage and verify that it is within tolerance.
Refer to the filter service conditions and performance specifications
in Chapter 3 for tolerances.
Possible cause:
Source impedance is out of tolerance.
Solution:
Verify that the source impedance is within tolerance. Refer to the
filter service conditions and performance specifications in Chapter 4
for tolerances.