Description
SMC TRES Relay Test Set Repair
The EuroSMC TRES is a three-phase protective-relay test set — it generates precise voltages, currents, and phase angles, with IEC 61850 support, to test and commission protective relays and schemes in substations. As a high-precision multi-phase test source, its faults split between the amplifier/output side and the timing/control/communications side.
June Company repairs and calibrates the SMC TRES for protection engineers and relay-test crews.
Common SMC TRES problems we fix
- A voltage or current channel weak/dead — amplifier output-stage failure, repaired so every channel meets rated output.
- IEC 61850 / communication faults — the comms interface not working, repaired.
- Timing / trip-time drift — the timing reference drifting, recalibrated against standards.
- Phase-angle accuracy off — the phase reference, corrected.
- Won’t connect to the control PC — interface faults, repaired.
FAQs
One of my TRES channels or its comms is down — fixable? Yes. Output-stage and communication faults are repairable, then channels and timing are verified against our standards with NIST-traceable calibration.
Is IEC 61850 verified? Yes — comms and analog functions are checked and certified.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.







