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.
Possible cause:
Power to the filter is turned off.
Solution:
Turn power on.
Possible cause:
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.
Possible cause:
A capacitor has failed.
Solution:
Inspect the tops of all capacitors for bowing. Replace failed capacitors.
Possible cause:
Source impedance is less than 1.5%.
Solution
Add a minimum 1.5% impedance line reactor to the filter input.
Possible cause:
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
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 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 for tolerances.
Possible cause:
One or more Capacitors are damaged.
Solution:
Visually check capacitor top for distortion or doming. Check for shorts or
open caps. Replace failed capacitors.
Possible cause:
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.