Control Relay · Electrical Components & Switchgear
The DEIF Uni-line generator controls are electrical measuring and protection relays covered by DNV certificate TAA00000Z2. They monitor generator voltage, current and frequency and provide protection and control functions for generator sets. They are installed in the generator panels of the main switchboard or in the engine control panels.
| Parameter/settings backup verification | annually or after any firmware update |
|---|---|
| Protection function test (reverse power, over/under frequency) | annually or at each class survey |
| Backup battery check/replacement | per maker recommendation, typically every 3-5 years |
| CAN bus/wiring inspection | annually |
| Load-sharing calibration check | annually or after generator/governor work |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
Class surveyors typically check protection function test records, synchronizing/load-sharing performance, and confirm the as-fitted parameter set matches the approved electrical protection coordination study.
Estimated lifetime: Electronic controller service life is typically 15-20 years with component-level replacement (batteries, fans, capacitors) rather than an hour-based rating
Listed in the DNV Approval Finder at the time we recorded it. The certificate is issued by DNV, not by us; check its current status at DNV.
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