Description
ISA STS 3000 Substation Test Set Repair Services
June Company’s certified technicians repair and calibrate the ISA STS 3000 for substation commissioning engineers, utility maintenance crews, relay protection technicians, and power system consultants. As substation test set specialists, we understand this equipment inside and out — and we know exactly how to restore performance when problems arise.
About the ISA STS 3000
In the field, substation test sets are multi-function instruments that test CTs, PTs, circuit breakers, grounding systems, and winding resistance in substation equipment. Professionals depend on the ISA STS 3000 for precise, repeatable results. Any degradation in performance impacts measurement confidence and downstream decisions.
Common Substation Test Set Issues We Repair
June Company’s repair services for this instrument include:
- Communication interface faults: addressed with OEM-grade components and verified against traceable standards
- Rugged case/connector damage: repaired by technicians experienced with ISA instrumentation
- Output current/voltage stage failure: resolved through targeted diagnostics and precision repair techniques
- Measurement channel drift: diagnosed through systematic testing and resolved with component-level repair
Calibration and Performance Verification
Calibration is integral to our repair process. Your ISA STS 3000 is tested for burden test, excitation curve, and polarity check accuracy, with all results recorded and provided with the returned instrument.
Why Choose June Company for ISA Repair?
What sets June Company apart:
- Traceable Calibration: NIST-traceable calibration certificates included with every repair
- 90-Day Warranty: All repairs backed by our parts and labor warranty
- Component-Level Repair: We diagnose and repair at the board and component level, not just swap modules
- OEM-Grade Parts: Genuine or equivalent components for lasting reliability
- Fast Turnaround: Most repairs completed in 5–10 business days
- Category Specialists: Dedicated experience with substation test set equipment from ISA and related manufacturers
Our Service Workflow
- Free Evaluation: Ship your ISA STS 3000 to our facility. We provide a detailed assessment and firm quote at no cost.
- Expert Repair: Certified technicians perform output stage rebuilds, measurement channel recalibration, communication module repair, and comprehensive substation test verification.
- Calibration: Full NIST-traceable calibration with documented results across all critical parameters.
- Quality Verification: Final functional testing confirms your instrument meets or exceeds original specifications.
- Return Shipment: Securely packaged and shipped with calibration certificate and repair documentation.
Industries We Serve
The ISA STS 3000 is used by substation commissioning engineers, utility maintenance crews, relay protection technicians, and power system consultants. June Company understands the operational demands of these fields and the importance of keeping critical test equipment in service.
Request a Repair Quote
Contact June Company for professional ISA STS 3000 repair and calibration. Our team is ready to evaluate your instrument and provide a no-obligation quote.
Email: info@juneusa.com






