If the IED has been calibrated with the system inputs, the calibration procedure
must be performed again to maintain the total system accuracy.
14.4 Repair support
M11768-3 v3
If an IED needs to be repaired, the whole IED must be removed and sent to an
ABB Logistic Center
. Before returning the material, an inquiry must be sent to the
ABB Logistic Center.
e-mail: offer.selog@se.abb.com
14.5 Maintenance
M11769-3 v2
The IED is self-supervised. No special maintenance is required.
Instructions from the power network company and other maintenance directives
valid for maintenance of the power system must be followed.
Section 14 1MRK 505 378-UEN A
Troubleshooting
290 Line differential protection RED670 2.2 IEC
Commissioning manual
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