The cable fault finding "thumper" technique, formally known as the surge wave generator (SWG) method, operates by first using a Time Domain Reflectometer (TDR) to approximate the distance to the fault. Following this pre-location, the thumper itself—a high-voltage capacitor—is repeatedly charged and rapidly discharged, sending a powerful, controlled surge of energy into the faulty cable. When this high-energy surge reaches the point of insulation failure, it forces a transient electrical arc across the fault, which produces a distinct, audible "thump" or acoustic impulse that travels up through the ground. Technicians then walk the cable path using a sensitive ground microphone to listen for the loudest acoustic signal, precisely pinpointing the fault location for excavation and repair. 

Why is RCD Testing Necessary? Your RCD is the most important safety device in your switchboard, designed to save lives by cutting power the instant it detects a leak. However, because they sit idle for years, the internal mechanism can stiffen or fail without warning. Our testing service goes beyond a simple check; we use calibrated equipment to verify that your RCD trips at the correct current and speed required by safety regulations. Fameca Company Ltd provides RCD testing to ensure your family or employees are safe from electrical hazards. 

Over time, transformer insulating oil accumulates moisture, sludge, and gases that compromise equipment performance and safety. Our professional oil filtration service restores your oil’s dielectric strength by removing these impurities through high-vacuum dehydration. By purifying your existing oil rather than replacing it, we help you extend the lifespan of your assets, reduce maintenance costs, and ensure uninterrupted power reliability 

Dielectric Breakdown Voltage (BDV) and Moisture Content (Humidity). The BDV test directly measures the oil's insulating ability, revealing the maximum voltage it can withstand before arcing; a low result is a clear warning sign of contamination, usually from particulates or moisture. Equally critical is measuring the moisture content, quantified in parts per million (ppm), because high humidity severely compromises the oil's dielectric strength and accelerates the irreversible aging of the solid paper insulation. Regular analysis of both BDV and humidity is essential to proactively identify degradation, prevent internal short circuits, and ensure the long-term reliability of your high-voltage transformer. 

Fameca Company provides specialized services in both High-Voltage (HV) and Low-Voltage (LV) cable termination and jointing. These procedures are critical for creating robust, sealed, and electrically sound connections that prevent moisture ingress, manage electrical stress, and ensure long-term system integrity. Whether connecting main utility lines (HV) or installing local distribution circuits (LV), we adhere strictly to manufacturer specifications and industry standards, utilizing heat-shrink, cold-shrink, or specialized crimping techniques. By executing precise, quality-controlled terminations and joints, we significantly minimize the risk of insulation failure, cable faults, and subsequent operational downtime.

Ensure the health and efficiency of your power infrastructure with our professional Transformer Turns Ratio (TTR) testing. This essential diagnostic verifies that your transformer’s actual turns ratio precisely matches its design specifications.

Our precision measurements help identify critical internal faults early, including:

• Shorted turns or open windings.

• Faulty tap changer contacts or incorrect settings.

• Internal degradation before it leads to costly failures.

Essential for routine maintenance, post-repair verification, and new equipment commissioning, our TTR testing safeguards your network and prevents unexpected downtime.

Assess the structural integrity and electrical health of your transformers with our DC Winding Resistance testing. This crucial diagnostic measures the resistance of the transformer windings to identify issues caused by mechanical stress, vibration, or thermal degradation.

Our accurate testing detects hidden anomalies that regular inspections miss, including:

• Loose or degraded internal connections and busbar joints.

• Broken strands or open circuits in the windings.

• High-resistance contacts in the tap changer.

Whether performed during routine maintenance, after a major fault, or as part of commissioning, this test ensures optimal performance and prevents catastrophic failures. 

Ensure the safety and efficiency of your high-current paths with our Contact Resistance testing, commonly known as Ductor testing. This service measures the micro-ohm resistance across critical electrical joints to detect poor connectivity that can lead to overheating, energy loss, or system failure.

Our precision testing is vital for identifying:

• Degraded or loose joints in busbars and cable terminations.

• Pitted or misaligned contacts in circuit breakers and isolators.

• Corrosion or oxidation on conducting surfaces.

Essential for on-site commissioning and routine maintenance, Ductor testing prevents catastrophic equipment damage and guarantees reliable power delivery.

Verify the mechanical and electrical integrity of your switchgear with our comprehensive Circuit Breaker Analysis. This critical diagnostic evaluates the operational speed, timing synchronization, and overall mechanical performance of your circuit breakers to ensure they trip reliably during a fault.

Our advanced testing assesses key performance metrics, including:

• Opening and closing times across all poles to ensure perfect synchronization.

• Mechanism speed and travel profiles to detect mechanical friction or wear.

• Control circuit performance, verifying coil operation and auxiliary contacts.

Crucial for routine maintenance and commissioning, circuit breaker analysis guarantees that your protection systems will act instantly to safeguard your personnel and assets.

Keep your power distribution infrastructure safe, compliant, and operating at peak efficiency with our comprehensive preventive and corrective maintenance services. We provide end-to-end electrical maintenance across all voltage levels—spanning Medium Voltage (MV) switchgear, power transformers, and Main Low Voltage Panels (MLVPs), through to downstream distribution networks and industrial installations.

Our specialized maintenance capabilities include:

• Substation & Heavy Equipment: Complete servicing of MV switchgear, power transformers, and MLVPs, including oil analysis, contact lubrication, and insulation testing.

• Infrastructure & Power Distribution: Busbar torque verification, thermal imaging to detect hot spots, cable insulation testing, and grounding system checks.

• Protection & Safety Systems: Advanced diagnostic testing, RCD verification, protection relay calibration, and circuit breaker timing analysis.

From routine factory shutdowns to large-scale commercial facility maintenance, our expertise ensures your critical electrical assets remain highly reliable, minimizing downtime and preventing catastrophic failures.

Ensure your electrical network is fully protected against faults, overloads, and catastrophic failures with our specialized Medium Voltage (MV) relay configuration and testing services. We bridge the gap between design parameters and physical switchgear operation, ensuring your protection coordination scheme functions precisely when needed.

Our core protection services include:

• Relay Programming & Configuration: Expert parameter setting and logic configuration for numerical and digital MV protection relays based on your engineering coordination studies.

• Secondary Injection Testing: Precision secondary injection testing using advanced protection analyzers to verify trip times and pick-up thresholds.

• Functional Scheme Verification: End-to-end trip testing to guarantee that the relay, control wiring, trip coils, and circuit breakers operate seamlessly as a unified safety system.

Whether commissioning a new substation or conducting routine compliance audits, our testing ensures immediate, selective fault isolation to maximize safety and minimize system downtime.