Overview
Circuit breakers serve as the first line of defense against electrical faults. At C&H Electric, our Breaker Testing services ensure that every component of your power distribution system performs reliably—when it matters most. We offer a comprehensive testing and maintenance package that includes:
Primary Injection Testing
Secondary Injection Testing
Breaker Cleaning, Lubricating, and Torquing
Our services follow best practices aligned with NFPA 70B, and NFPA 70E, standards to enhance electrical system reliability, safety, and compliance.
Why Breaker Testing Matters
- Ensures circuit breakers trip reliably under fault conditions
- Safeguards downstream electrical equipment from overcurrent
- Supports compliance with NFPA, OSHA, and NETA standards
- Enhances facility and personnel safety
- Extends the life of your electrical distribution equipment
Preventive testing is critical to ensuring safety, reliability, and regulatory compliance across all electrical systems.
OUR BREAKER TESTING SERVICES
Primary Injection Testing
- Injects high current through the breaker to test the full protection circuit
- Verifies current sensors, trip units, wiring, and mechanical operations
- Identifies misconfigured trip settings and hidden internal failures
- Required for commissioning and periodic testing per NETA
Secondary Injection Testing
- Tests the logic and response of electronic trip units
- Simulates fault signals without requiring system shutdown
- Ideal for annual testing of breakers with electronic protection systems
- Cost-effective with minimal disruption to facility operations
Breaker Cleaning, Lubricating, and Torquing
- Removes dust, debris, and moisture from internal components
- Lubricates moving parts to reduce friction and mechanical wear
- Re-torques connections to OEM specifications to prevent arcing or loosening
- Maintains mechanical integrity and prolongs breaker lifespan
Primary Injection Testing
Injects high current through the breaker to test the full protection circuit
Verifies current sensors, trip units, wiring, and mechanical operations
Identifies misconfigured trip settings and hidden internal failures
Required for commissioning and periodic testing per NETA ATS standards
Secondary Injection Testing
Tests the logic and response of electronic trip units
Simulates fault signals without requiring system shutdown
Ideal for annual testing of breakers with electronic protection systems
Cost-effective with minimal disruption to facility operations
Breaker Cleaning, Lubricating, and Torquing
Removes dust, debris, and moisture from internal components
Lubricates moving parts to reduce friction and mechanical wear
Re-torques connections to OEM specifications to prevent arcing or loosening
Maintains mechanical integrity and prolongs breaker lifespan
Our Process
1. System Evaluation
- Review breaker specifications, load requirements, and maintenance records.
- Assess power system configuration and breaker condition.
- Determine testing strategy based on environment and operational needs.
2. Visual Inspection
- Inspect for external damage, discoloration, corrosion, and contamination.
- Check for loose or misaligned parts, cracked insulation, and wear.
- Document physical findings for maintenance history.
3. Electrical Testing
- Perform calibrated Primary and/or Secondary Injection Testing.
- Identify potential failure points and performance issues.
4. Mechanical Servicing
- Clean internal components to remove dust, debris, and moisture.
- Lubricate mechanical parts and hinges per OEM guidelines.
- Re-torque all critical electrical connections to specification.
5. Functional Verification
- Verify breaker trip mechanisms and accessory function.
- Check safety interlocks and control components for responsiveness.
- Confirm operational integrity within manufacturer tolerances.
6. Reporting & Recommendations
- Provide a detailed report with findings and test data.
- Include photos, documented anomalies, and severity-based insights.
- Offer prioritized recommendations and scheduling for follow-up actions.
other preventive maintenance services
- Line Isolation Monitor (LIM) Panel Testing
- Critical Receptacle Testing
- Custom plans for Joint Commission Environment of Care or AAAHC Compliance
- Cleaning, Lubricating, and Torquing
- Contact Resistance Testing
- Insulation Resistance Testing
