Description
ISA DRTS 66 Relay Test Set Repair
The ISA DRTS 66 is a protective-relay and substation test set — it generates precise voltages, currents, and phase angles, PC-controlled, to test and commission protective relays, transducers, and meters in substations. As a 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 ISA DRTS 66 for protection engineers and relay-test crews.
Common ISA DRTS 66 problems we fix
- A voltage or current channel weak/dead — amplifier output-stage failure, repaired so every channel meets rated output.
- 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/communication faults, repaired.
- Power or control faults.
FAQs
One of my DRTS 66 channels or its comms is down — fixable? Yes. Amplifier output-stage and communication faults are repairable, then channels and timing are verified against our standards with NIST-traceable calibration.
Is timing accuracy verified? Yes — timing and phase 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.






