Repair Support; Maintenance - Hitachi RET670 Commissioning Manual

1MRK 504 165-UEN Rev. K
15.4

Repair support

If an IED needs to be repaired, the whole IED must be removed and sent to an Hitachi Power grids
Logistic Center. Before returning the material, an inquiry must be sent to the Hitachi Power grids
Logistic Center.
e-mail: offer.selog@se.Hitachi Power grids.com
15.5

Maintenance

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.
Transformer protection RET670
Commissioning manual
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Section 15
Troubleshooting
M11768-3 v4
M11769-3 v2
299