TEST LABS
Partial Discharges (PD) And Radio Influence Voltage (RIV) Measurement System
The HVEX Partial Discharge (PD) and Radio Interference Voltage (RIV) Measurement System is a complete solution for early diagnosis and monitoring of the dielectric condition of high and extra-high voltage electrical assets. Utilizing cutting-edge technology, the system employs high-frequency sensors and dedicated software for non-invasive detection of dielectric faults in transformers, reactors, circuit breakers, capacitors, cables, and generators. Manufactured in Brazil by HVEX, the system can be fully customized according to the client's needs, serving applications from laboratory settings to field tests in substations and industrial plants. Using oil or epoxy insulated coupling capacitors, the equipment operates with phase voltages ranging from 13.8 kV up to 500 kV, offering high versatility for both indoor and outdoor environments. Typical Applications: • Partial discharge (PD) measurement in transformers, reactors, and circuit breakers. • Radio interference voltage (RIV) testing on high-voltage lines and equipment. • Preventive diagnosis of dielectric faults in insulating materials. • Condition monitoring of generators, power cables, and capacitors. • Early detection of dielectric withstand degradation. • Applications in substations, factories, and electrical testing laboratories. Technical Features: • High-frequency measurement with dedicated analysis software. • Coupling quadripole for signal separation. • PRPD (Phase Resolved Partial Discharge) pattern technique for mapping the dispersion of discharges over the sine wave cycle. • Precise indication of the type and origin of the dielectric fault. • Digital communication and detailed analysis reports. Standards Complied With: • IEC 60270 – Partial discharge measurements. • IEC 60060 – High-voltage test techniques. • IEEE Std C57.124 – Recommended practices for partial discharge measurements in transformers. • IEEE Std C57.113 – Guide for interpreting PD measurements. • IEEE Std 1434 – Partial discharge measurement in rotating electrical machines. • IEEE Std 400 – PD testing on electrical cables. • NBR 5356 – High-voltage testing for electrical equipment. Technical Advantages: • Early diagnosis of critical dielectric faults. • Non-invasive and safe equipment for field and laboratory operation. • National customization with dedicated HVEX technical support. • High reliability for applications from 13.8 kV to 500 kV. • Ideal or predictive maintenance programs and operational risk reduction.