Matrix
®
E-Series Technical Reference Manual 380V – 480V
25 Form: MAE-TRM-E September 2020 REV. 001
Table 7-1: Troubleshooting Guide
PROBLEM: Line voltage is not present at the filter output terminals.
Power to the filter is turned off.
Solution: Turn power on.
One or more external line fuses are blown.
Solution: Verify the continuity of line fuses in all phases. Replace as necessary.
PROBLEM: Full Load Harmonic current distortion exceeds 12% at full load.
Solution: Inspect the tops of all capacitors for bowing. Replace failed capacitors.
Source impedance is less than 1.5%.
Solution Add a minimum 1.5% impedance line reactor to the filter input.
Input source voltage harmonic distortion.
Solution
Identify equipment causing harmonic voltage distortion and add filters
as required or accept elevated THVD.
PROBLEM: Filter output voltage is not within specification
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 for
tolerances.
Source impedance is out of tolerance.
Solution:
Verify that the source impedance is within tolerance. Refer to the filter
service conditions and performance specifications for tolerances.
One or more Capacitors are damaged.
Solution:
Visually check capacitor top for distortion or doming. Check for shorts or
open caps. Replace failed capacitors.
Drive set up parameter does not allow for input filter
Solution: Consult drive manufacturer to update setup to accommodate input filter.
Possible cause:
Input voltage subject to extreme transients such as switching between
two voltage sources. Drive faults on over or under voltage.
Solution:
Source switching is not recommended without proper phase
synchronizing or allowing reasonable time delay before transfer to new
source.
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