Description
ISA T 3000 Transformer Test Set Repair
The ISA T 3000 is a transformer test system — it measures transformer turns ratio, winding resistance, excitation current, and related parameters to verify and diagnose power and distribution transformers during commissioning and maintenance. As a multi-function transformer analyzer with a test source, its faults concentrate in the source, the ratio/resistance measurement circuitry, and the test-lead connections.
June Company repairs and calibrates the ISA T 3000 for transformer-maintenance and utility crews.
Common ISA T 3000 problems we fix
- Ratio-measurement recalibration — turns-ratio readings out of spec, recalibrated against standards so results are trustworthy.
- Excitation-source faults — the applied test source not generating correctly, repaired.
- Winding-resistance measurement faults — the resistance-measurement path reading wrong, repaired.
- Test-lead / connection faults — the measurement connections, serviced.
- Display, control, or interface faults.
FAQs
My T 3000 ratio or resistance readings look wrong — fixable? Yes. Measurement and source faults are repairable and recalibrated, then verified so turns-ratio, resistance, and excitation results are accurate, with a NIST-traceable certificate.
Are all functions verified? Yes — ratio, resistance, and excitation are checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.







