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.