Troubleshooting - HPS Centurion P Guía De Instalación, Operación Y Mantenimiento

6. Use compressed air with a maximum of 35 PSI to
blow off any dust from in between the winding
layers of the coils and ensure that the winding
ducts of the coils are free of any foreign material.
7. Vacuum the inside of the enclosure again.
8. At the end of a capacitor's service life, due to
dielectric depreciation and build-up of gases,
the pressure within a capacitor will build up. To
prevent explosive failure, capacitors must be
inspected regularly and replaced if found having
swelling on the container.
9. IF NO SWELLING IS FOUND:
A. Measure the capacitance of the capacitors
by taking readings between phases AB,
BC and AC. Readings within 10% of each
other indicate normal operation of the HPS
Centurion P. However, capacitance must
be calculated and compared to the values
indicated on the nameplate of the product to
ensure the integrity of the capacitors.
B. After ensuring that the difference between
the measured phase-to-phase capacitance of
the capacitors is less than 10%, take any one
of the readings and multiply it by 2/3 (if the
capacitors are connected in delta format) and
by 2 (if the capacitors are connected in star
format). The resulting number should be
within 25% of the capacitance value shown
on the nameplate of the HPS Centurion P.
A difference of more than 25% indicates
weakness of the capacitors. If this is the
case, call Hammond Power Solutions (HPS)
with the serial number of the product and
order new capacitors.
C. In case of weak or failed capacitors the
HPS Centurion P could continue working
but its harmonic mitigation capabilities will
be affected. Therefore, we recommend
replacing the weak or failed capacitors
as soon as possible. The same procedure
should be followed to replace the old
capacitors with the new ones.
10. Inspect the inside of the enclosure and the top
of the core for any tools that might have been
placed there and forgotten.
11. Re-attach the enclosure panels and energize the
input breaker.
Installation, Operation, and Maintenance Guide - Low Voltage Passive Filters
RECOMMENDED TORQUE VALUES FOR BOLTED
ELECTRICAL CONNECTIONS
BOLT SIZE CARBON ST.
GRADE 5
ft-lbs [Nm] ±5%
1/4-20 7 [10]
3/8-16 20 [27]
1/2-13 60 [70]
8 mm 20 [23]
12 mm 60 [70]
*Note: The above torque values are for dry, unlubricated bolts.

Troubleshooting

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC
FLASH
Failure to de-energize, isolate and ground the Passive
Harmonic Filter terminals and to verify the ground
potential on all terminals before performing any
work on the Passive Harmonic Filter will result in
serious personal injury or death.
The following outlines possible scenarios and their
corresponding solutions.
1. The HPS Centurion P Passive Harmonic Filter is
not operational.
Possible cause: Power to the unit is turned off.
Solution: Check that the upstream circuit breaker or
disconnect is closed and the fuses are not blown.
For early detection of any developing hotspots, an
infrared scan of the HPS Centurions P is advised. The
scan should take place when the unit is operating
under its nominal load.
Ensure that power to the HPS Centurion P Filter is
turned off and it is safely grounded and isolated
before the troubleshooting. The unit should not be
worked on while energized. While de-energized, the
work has to be conducted by a licensed professional
in accordance with the local and provincial safety and
electrical codes.
BRASS S.S STEEL
ALLOY CU270 B8 OR B8M
ft-lbs [Nm] ±5% ft-lbs [Nm] ±5%
3.8 [5] 5 [6]
14 [18] 15 [20]
33 [45] 37 [50]
12 [14] 12 [14]
33 [45] 37 [50]
8