ETI MAC-21 Repair

ETI MAC-21 Circuit Breaker Tester Repair

ETI Precision Repair

$245.00

🛡️ 90-Day Warranty ✓ Fee Credited to Repair ⚡ No Forms Needed

Expert ETI MAC-21 repair and calibration with documented test results. We address coil current measurement drift and other common circuit breaker tester faults.

📋 How It Works

  1. Submit Request – Pay evaluation fee & provide equipment details
  2. Ship to Us – Send your equipment to our Oregon facility
  3. We Evaluate – Detailed diagnosis & repair estimate
  4. Fee Credited – Your evaluation fee applies to repair cost
  5. We Repair – Professional repair with 90-day warranty
  • 🔧 Fast Turnaround: Most repairs are completed within 1–3 business days.
  • 📏 Precision Calibration: NIST-traceable calibrations included for most repairs.
  • 🛡️ Warranty: 90-day warranty on all repairs.
  • 📝 Transparency: Detailed evaluation and repair estimate before work begins.
✓ Evaluation Fee Credited Toward Repair

This evaluation fee is applied as credit toward your final repair cost. After we evaluate your equipment, you'll receive a detailed estimate before any repair work begins.

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Description

ETI MAC-21 Circuit Breaker Tester Repair Services

The ETI MAC-21 is a critical instrument used by utility relay technicians, substation maintenance crews, switchgear manufacturers, and industrial plant electricians. When this equipment fails or drifts out of specification, June Company delivers expert repair and NIST-traceable calibration to restore full operational accuracy.

About the ETI MAC-21

As a circuit breaker tester instrument, the ETI MAC-21 is designed for demanding applications. Specifically, circuit breaker testers analyze the timing, motion, contact resistance, and coil performance of medium- and high-voltage circuit breakers. Accurate and reliable performance is essential — measurement drift or component failure can cause costly errors, compliance issues, and project delays.

Common Circuit Breaker Tester Issues We Repair

Our repair process addresses the root cause of every issue:

  • Coil current measurement drift: identified during our multi-point inspection and corrected to restore specification performance
  • High-current contact resistance errors: addressed with OEM-grade components and verified against traceable standards
  • Timing channel failures: repaired by technicians experienced with ETI instrumentation
  • Motion transducer interface issues: resolved through targeted diagnostics and precision repair techniques

Calibration and Performance Verification

After repair, we perform comprehensive calibration across all operational modes. For the ETI MAC-21, this includes verification of contact timing and travel analysis performance, with results documented on a NIST-traceable calibration certificate.

Why Choose June Company for ETI Repair?

Customers choose June Company for our depth of technical expertise:

  • Traceable Calibration: NIST-traceable calibration certificates included with every repair
  • 90-Day Warranty: All repairs backed by our parts and labor warranty
  • Nationwide Service: Secure shipping and service for customers across the United States
  • OEM-Grade Parts: Genuine or equivalent components for lasting reliability
  • Category Specialists: Dedicated experience with circuit breaker tester equipment from ETI and related manufacturers
  • Component-Level Repair: We diagnose and repair at the board and component level, not just swap modules

How Our Repair Process Works

  1. Free Evaluation: Ship your ETI MAC-21 to our facility. We provide a detailed assessment and firm quote at no cost.
  2. Expert Repair: Certified technicians perform timing channel recalibration, transducer interface repair, measurement circuit restoration, and software updates.
  3. Calibration: Full NIST-traceable calibration with documented results across all critical parameters.
  4. Quality Verification: Final functional testing confirms your instrument meets or exceeds original specifications.
  5. Return Shipment: Securely packaged and shipped with calibration certificate and repair documentation.

Industries We Serve

The ETI MAC-21 is used by utility relay technicians, substation maintenance crews, switchgear manufacturers, and industrial plant electricians. 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 ETI MAC-21 repair and calibration. Our team is ready to evaluate your instrument and provide a no-obligation quote.

Email: info@juneusa.com

Brand

ETI Repair

ETI Precision, also known as Electrical Test Instruments (ETI), provides a range of calibration and testing equipment primarily for electrical safety and performance verification. Here's an overview of some key ETI Precision products and what they do:

1. Multi-Product Calibrators

  • Description: Instruments designed to calibrate various types of electrical test equipment such as multimeters, oscilloscopes, and power meters.
  • Applications: Used in laboratories, manufacturing, and service centers to ensure the accuracy of measurement devices.
  • Popular Models: Cal Test 5000
  • Features: High accuracy, multifunctional capabilities, and user-friendly interfaces.

2. Electrical Safety Analyzers

  • Description: Devices for testing the safety and compliance of electrical equipment by measuring insulation resistance, ground continuity, and leakage current.
  • Applications: Essential for testing medical devices, consumer electronics, and industrial machinery to meet safety standards.
  • Popular Models: ESA615 Electrical Safety Analyzer
  • Features: Comprehensive safety testing, automated test sequences, and detailed reporting.

3. Portable Appliance Testers (PAT)

  • Description: Instruments used to test the electrical safety of portable appliances, ensuring they are safe to use.
  • Applications: Commonly used in workplaces, rental properties, and service industries to test tools, appliances, and office equipment.
  • Popular Models: PrimeTest Series
  • Features: Lightweight, easy to use, and capable of conducting a range of safety tests.

4. High Voltage Insulation Testers

  • Description: Equipment for measuring the insulation resistance of high voltage equipment and systems.
  • Applications: Used in power utilities, industrial plants, and maintenance services to detect insulation breakdowns and prevent failures.
  • Popular Models: HV Insulation Tester 5400
  • Features: High test voltages, accurate measurements, and robust design for field use.

5. Ground Resistance Testers

  • Description: Devices for measuring the resistance of grounding systems to ensure they provide a safe path for fault currents.
  • Applications: Vital for the maintenance of electrical grounding systems in buildings, substations, and industrial facilities.
  • Popular Models: Ground Resistance Tester 6100
  • Features: Reliable measurements, easy-to-read displays, and durable construction.

6. Transformer Test Equipment

  • Description: Instruments designed to test the performance and condition of electrical transformers.
  • Applications: Used by utilities and service companies to assess transformer efficiency and detect potential issues.
  • Popular Models: Transformer Ohmmeter 2800
  • Features: Accurate resistance measurement, easy operation, and comprehensive testing capabilities.

7. Current Clamp Meters

  • Description: Devices that measure current flow in electrical conductors without needing to make direct contact or disconnect the circuit.
  • Applications: Useful for electricians, maintenance personnel, and energy auditors for non-invasive current measurements.
  • Popular Models: Current Clamp Meter 3000
  • Features: High sensitivity, wide measurement range, and portable design.
ETI Precision Repair

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