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The components description is given in
10.5 DC capacitor change
The active filter DC link contains electrolytic DC capacitors. Their lifespan is up to 8 years
when the filter option 'line to neutral balancing' is not used and up to 5.5 years when the
full capacity of the filter is used for line to neutral balancing. This data assumes that the
filter is used within the ABB approved technical specifications (Cf.
It is not possible to predict a capacitor failure. Contact your ABB service provider if
capacitor failure is suspected. Replacement kits are available from ABB. Do not use other
than ABB-specified spare parts.
10.6 DC capacitor reforming
If the filter has been non-operational for more than one year, the DC capacitors must be
reformed (re-aged) before use. Without reforming, the DC capacitors may be damaged at
start-up.
Stocked or non-operational filters should be reformed once a year. The method described
here assumes that the filter is stocked in a clean and dry environment.
To reform the capacitors,
If the filter has been left more than 2 years without operation, please contact your ABB
service provider.
144 Maintenance instructions ç Manual Power Quality Filter PQFS
· Reconnect the fan wires to the terminal block
· Reclose the filter cover
3
Figure 89: Overview of IGBT cooling fan for units
Table 53: IGBT cooling fan related items description
Item
1
2
3
· Switch on the power supply to the filter without starting the filter for about 2
hours. Verify with the PQF-Manager the DC capacitor voltage and ensure that it
is charges to a couple of hundred volts.
· Then, with all harmonics and reactive power and balancing functionality
deselected, start the active filter and leave it running for one hour
· The filter is now ready for normal operation
Table
53.
Description
Cooling fans
Fan assembly fixation holes
Fan electrical connections
1
2
Chapter
12).
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Troubleshooting
