HPS Centurion P Guía De Instalación, Operación Y Mantenimiento página 9

2. The capacitor phase currents are unbalanced by
more than 10%.
First possible cause: One or more of the capacitors
have failed.
Solution: Refer to Maintenance section of the
manual.
3. Harmonic mitigation is outside the expected
limits.
First possible cause: One or more of the capacitors
have failed.
Solution: Check for the failed capacitor(s) and
replace if necessary.
Second possible cause: There is not enough load on
the HPS Centurion P Filter.
Solution: Increase the load to at least 65% of the
unit's rated capacity.
Third possible cause: High background voltage
distortion.
Solution: Check that background voltage distortion
is below 5%. If above 5%, consider harmonic
mitigation for other harmonic generating loads.
4. The HPS Centurion P output voltage is not within
the specified limits.
First possible cause: Input voltage to the HPS
Centurion P is not within 5% of the nameplate
voltage.
Solution: Check AC input voltage and verify that
it is within 5% of the nameplate voltage of the HPS
Centurion P. If the voltage is not within this range
then change the upstream passive harmonic filter
voltage taps as required.
Second possible cause: One or more of capacitors
have failed.
Solution: Check for failed capacitor(s) and replace if
necessary. For instructions, refer to Section 2 of the
Troubleshooting Guide.
5. The HPS Centurion P is creating excessive audible
noise.
First possible cause: Loose enclosure screws.
Solution: Tighten the enclosure screws.
Second possible cause: Loose conduit attachments
or fasteners.
Solution: Follow the instructions in the Scheduled
Maintenance Procedure for opening the enclosure
of the HPS Centurion P and tighten the conduit
attachments or fasteners inside the enclosure.
9
IOMGPF / June 2021