1. HV / LV CB / ACB Testing (High Voltage / Low Voltage Circuit Breakers / Air Circuit Breakers)
Precision Testing for Critical Switching Devices
At Pro-Active Solutions, we conduct thorough testing of HV and LV Circuit Breakers, including Air Circuit Breakers (ACBs), to ensure fault isolation systems function with speed, reliability, and accuracy. These breakers are crucial for protecting people, equipment, and electrical networks — and our testing helps guarantee they operate when it matters most.
Key Testing Activities Include:
- Breaker Timing Test
Measures opening and closing time to verify quick fault clearance. - Contact Resistance Measurement
Ensures minimal losses and healthy internal contact surfaces. - Insulation Resistance Test
Evaluates insulation quality between poles and to ground. - Functional and Mechanical Operation Check
Verifies smooth operation of mechanical parts and trip mechanisms. - Trip Unit Calibration (for ACBs)
Tests electronic trip settings for overload, short-circuit, and ground fault protection.
Accurate breaker performance is vital to prevent cascading failures and equipment damage. Our testing ensures your breakers are in peak condition, in full compliance with IS/IEC standards, and ready for safe, reliable operation.
2. Transformer Testing
Comprehensive Testing for Power & Distribution Transformers
At Pro-Active Solutions, we deliver in-depth testing services for power and distribution transformers to ensure safe, efficient, and uninterrupted operation. Our tests are designed to identify insulation degradation, winding faults, core issues, and performance inefficiencies — all in line with IS/IEC standards.
Key Testing Activities Include:
- Insulation Resistance (IR) Test
Assesses insulation quality between windings and earth. - Winding Resistance Test
Detects loose connections, high-resistance joints, and shorted turns. - Turns Ratio Test (TTR)
Confirms the voltage ratio between primary and secondary windings. - Vector Group Verification
Verifies correct transformer winding configuration and group. - Magnetization Current Test
Identifies core issues or winding displacements. - Tan Delta (Dissipation Factor) Test
Evaluates the condition of transformer insulation over time, revealing aging and moisture ingress. - Sweep Frequency Response Analysis (SFRA)
Advanced diagnostic test to detect internal winding movements, core shifts, and mechanical deformations caused by short circuits or transport damage.
Why It Matters:
Regular transformer testing prevents breakdowns, extends asset life, and improves safety — ensuring optimal performance under all load conditions.
3. Relay Testing
Precision Testing for Critical Protection Systems
At Pro-Active Solutions, we provide comprehensive relay testing services to ensure your electrical protection systems respond accurately and reliably under fault conditions. Our team is equipped to test a wide range of protective relays — from electromechanical to advanced numerical types — across industrial, utility, and infrastructure applications.
Key Testing Activities Include:
- Functionality Testing
Verifies that the relay operates correctly under simulated fault conditions. - Pick-up and Drop-off Test
Checks relay sensitivity and ensures it activates/deactivates at correct values. - Time-Current Characteristics (TCC) Testing
Confirms the relay’s response time matches specified curves and coordination. - Trip Circuit Testing
Ensures proper relay interaction with breakers and trip circuits. - Scheme Testing (End-to-End Testing)
Validates the overall performance of protection schemes and coordination between relays. - Communication & Logic Verification (for Numerical Relays)
Checks settings, logic functions, and communication protocols such as IEC 61850.
Protective relays are the first line of defence for your electrical system. Our precision testing helps eliminate nuisance tripping, enhances coordination, and ensures fast and accurate fault isolation — keeping your people, equipment, and network safe.
4. Instrument Transformer Testing (CTs & PTs)
Ensuring Accuracy, Safety & System Reliability
At Pro-Active Solutions, we perform precise and reliable testing of Current Transformers (CTs) and Potential/Voltage Transformers (PTs) to ensure accurate measurement, protection coordination, and safe system operation. As key components in metering and protection circuits, CTs and PTs must operate within exact performance standards — and our testing ensures they do.
Key Testing Activities Include:
- Ratio Testing
Verifies the accuracy of the CT/PT transformation ratio between primary and secondary windings. - Polarity Check
Ensures correct polarity to prevent maloperation of metering and protection devices. - Magnetization (Excitation) Curve Testing
Assesses core saturation characteristics and reveals potential issues in accuracy. - Burden & Phase Angle Error Testing
Evaluates how secondary burden affects accuracy and timing, critical for protection schemes. - Insulation Resistance Test
Verifies insulation health between windings and to ground, minimizing the risk of failure. - Winding Resistance Test
Detects high resistance joints or internal faults in transformer windings. - Secondary Loop Verification
Confirms the continuity and correct connections of secondary wiring circuits.
Accurate CT/PT performance is essential for reliable system protection, proper metering, and safe relay operations. Our detailed testing ensures compliance with IS/IEC standards and supports error-free power system behaviour.
5. Panels Testing
Verifying Safety, Functionality & System Integration
At Pro-Active Solutions, we perform end-to-end testing of electrical panels — including control, relay, distribution, and protection panels — to ensure flawless performance, correct wiring, and full system integration. Our testing processes are designed to eliminate wiring errors, confirm protection coordination, and validate system logic before energization.
Key Testing Activities Include:
- Wiring Continuity Check
Verifies all circuits and terminals are correctly wired and terminated. - Functional Testing
Ensures relays, switches, interlocks, and control logic operate as per the design. - Relay Scheme Verification
Confirms correct protection sequence and trip logic in relay panels. - Control Circuit Testing
Validates control commands, feedbacks, and interlocking functions. - Mimic and Indication Testing
Checks the accuracy of panel indicators, lamps, push buttons, and annunciators. - Busbar & Earth Continuity Testing
Ensures safe and reliable current paths and grounding. - Breaker & Contactor Operation Test
Tests mechanical and electrical operations under simulated conditions.
From relay coordination panels to complex control assemblies, our expert team ensures each panel is built and operates exactly as designed — reducing start up issues, minimizing risks, and saving valuable time on-site.
6. Switchyard Equipment Testing
Ensuring High-Voltage Equipment Operates Safely and Reliably
At Pro-Active Solutions, we specialize in the testing and verification of switchyard equipment — the critical infrastructure that links generation, transmission, and distribution systems. Our thorough testing protocols help ensure that every component performs optimally under real-world electrical stresses, ensuring system stability and safety.
Key Equipment We Test:
- Circuit Breakers (HV & EHV)
Timing, contact resistance, insulation, and trip operation checks to ensure accurate fault interruption. - Isolators / Disconnectors
Mechanical operation, interlock verification, and contact integrity testing. - Current & Potential Transformers (CTs & PTs)
Ratio, polarity, magnetization, insulation, and winding resistance tests. - Lightning Arresters
Leakage current and insulation resistance testing to confirm surge protection functionality. - Busbars and Connectors
Thermal imaging, continuity, and joint integrity checks. - Power Transformers
Comprehensive testing including IR, TTR, Tan Delta, SFRA, and functional readiness. - Control & Protection Panels
Relay scheme testing, wiring checks, and logic verification to ensure correct tripping and signalling.
Why It Matters:
Switchyards are high-risk, high-impact zones — and testing must be precise. Our experienced engineers follow strict safety protocols and IS/IEC standards to ensure dependable results, preventing costly outages and equipment failure.
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Ready to Power Up with Precision?
At Pro-Active Solutions, our testing services are more than just routine checks — they’re your assurance of safety, performance, and compliance. With expert engineers, calibrated equipment, and a commitment to excellence, we ensure your electrical systems are tested right — the first time.
Trust Pro-Active Solutions to keep your systems reliable, efficient, and safe.
Contact Us Today to schedule your testing service or request a consultation.