176 Maintenance instructions
Manual Energy Storage Inverter ESI-S
Table 54: IGBT cooling fan related items description
10.5 DC capacitor change
The inverter DC link contains electrolytic DC capacitors. Their lifespan is up to 8 years.
This data assumes that the inverter is used within the ABB approved technical
specifications (Cf.
Chapter 12
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 inverter 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 units should be reformed once a year. The method described
here assumes that the inverter is stocked in a clean and dry environment.
To reform the capacitors,
−
Switch on the power supply to the inverter without starting the inverter for about
2 hours. Verify with the ESI-Manager the DC capacitor voltage and ensure that it
is charged to a couple of hundred volts.
−
Then, with all features deselected, start the system and leave it running for one
hour
−
The inverter is now ready for normal operation
If the inverter has been left more than 2 years without operation, please contact your
ABB service provider.
10.7 Servicing report
The Servicing report is designed to help the person in charge of servicing.
Item Description
1
Cooling
fans
2
Fan
assembly
fixation
holes
3
Fan
electrical
connections
