Description
ISA STCS PLUS Switch Module Repair Services
June Company’s certified technicians repair and calibrate the ISA STCS PLUS for transformer maintenance crews, utility asset managers, transformer manufacturers, and substation commissioning teams. As ttr tester specialists, we understand this equipment inside and out — and we know exactly how to restore performance when problems arise.
About the ISA STCS PLUS
In the field, TTR (transformer turns ratio) testers measure the turns ratio, excitation current, and polarity of power and distribution transformers to verify winding integrity. Professionals depend on the ISA STCS PLUS for precise, repeatable results. Any degradation in performance impacts measurement confidence and downstream decisions.
Common TTR Tester Issues We Repair
June Company’s repair services for this instrument include:
- Test lead interface wear: addressed with OEM-grade components and verified against traceable standards
- Display module failure: repaired by technicians experienced with ISA instrumentation
- Battery degradation: resolved through targeted diagnostics and precision repair techniques
- Ratio measurement accuracy drift: diagnosed through systematic testing and resolved with component-level repair
- Excitation current source degradation: identified during our multi-point inspection and corrected to restore specification performance
Calibration and Performance Verification
Calibration is integral to our repair process. Your ISA STCS PLUS is tested for polarity, phase deviation, and tap changer testing 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
- Transparent Pricing: Detailed quotes before work begins — no surprises
- Nationwide Service: Secure shipping and service for customers across the United States
- Fast Turnaround: Most repairs completed in 5–10 business days
- Category Specialists: Dedicated experience with ttr tester equipment from ISA and related manufacturers
Our Service Workflow
- Free Evaluation: Ship your ISA STCS PLUS to our facility. We provide a detailed assessment and firm quote at no cost.
- Expert Repair: Certified technicians perform ratio measurement recalibration, excitation source repair, test lead connector replacement, and traceable ratio accuracy 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 STCS PLUS is used by transformer maintenance crews, utility asset managers, transformer manufacturers, and substation commissioning teams. 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 STCS PLUS repair and calibration. Our team is ready to evaluate your instrument and provide a no-obligation quote.
Email: info@juneusa.com






