Technology News

A partial discharge analyzer helps electrical maintenance and test teams detect and assess partial discharge (PD) activity in high-voltage equipment. Zhuhai Huawang Technology’s multifunctional partial discharge analyzer brings together four detection approaches—transient earth voltage (TEV), ultrasonic, high-frequency current (HFCT) and ultra-high frequency (UHF)—in a portable instrument. With the appropriate sensor configuration, it can be used […]

Partial discharge acoustic detection is a non-contact method used to identify ultrasonic signals generated by partial discharge and other abnormal discharge activity in electrical equipment. By detecting and analyzing these acoustic signals, maintenance teams can locate potential insulation defects before they develop into serious equipment failures. For power utilities, substations, industrial plants, and electrical equipment manufacturers,

High-voltage power cables are among the most critical assets in modern electrical networks. Whether installed in urban distribution systems, industrial facilities, renewable energy plants, or utility substations, cable failures can result in costly outages and safety risks. One of the most effective methods for evaluating cable insulation health is partial discharge cable testing. By identifying

Power transformers are among the most critical assets in electrical transmission and distribution networks. As transformers age, insulation degradation, moisture ingress, mechanical stress, and manufacturing defects can lead to partial discharge (PD) activity inside the equipment. If left undetected, these defects may develop into serious insulation failures, resulting in costly outages and unexpected downtime. For

Partial Discharge (PD) activity, often dubbed the “silent killer” of high-voltage (HV) assets, represents a critical phenomenon in electrical insulation systems. It is a localized dielectric breakdown of a small portion of an electrical insulation system under electrical stress, which does not completely bridge the electrodes. Instead, it occurs within voids, cracks, or interfaces within

Partial discharge analysis has become one of the most important predictive maintenance methods for medium- and high-voltage electrical equipment. By identifying insulation degradation at an early stage, engineers can reduce unexpected outages, improve equipment reliability, and extend asset life. Today, utilities and industrial facilities widely use portable partial discharge detection instruments to inspect: Modern handheld

In modern substations and industrial power systems, insulation failure rarely happens without warning. Before a major breakdown occurs, electrical assets often produce early symptoms such as partial discharge (PD), corona activity, ultrasonic noise, or transient electromagnetic pulses. Detecting these warning signs early is critical for preventing outages and reducing maintenance costs. This is why partial

In modern substations and distribution networks, insulation failure inside switchgear and ring main units (RMUs) remains one of the leading causes of unexpected outages. As utilities continue to improve power system reliability, online partial discharge monitoring has become an essential part of preventive maintenance strategies. Among different monitoring technologies, the partial discharge TEV sensor has become

In modern electrical power systems, switchgear plays a critical role in controlling, protecting, and isolating electrical equipment. However, insulation degradation in high-voltage and medium-voltage switchgear can lead to partial discharges (PD), which are early warning signs of potential failures. Partial discharge sensors for switchgear provide a non-intrusive, real-time solution for online monitoring, helping utilities and industries prevent