Partial Discharge Meters:

Partial Discharge Meters are handheld devices specifically designed for detecting and measuring partial discharge activity. These instruments typically consist of a sensor, a signal processing unit, and a display screen. The sensor is positioned near the equipment or insulation system under test to capture the PD signals. The signals are then processed by the internal unit, and the measurement results are displayed on the screen for analysis. Partial Discharge Meters are portable and easy to use, making them suitable for field testing and on-site inspections.

                                                                        Partial Discharge Analyzers:

Partial Discharge Analyzers are more advanced instruments used for comprehensive PD detection and analysis. These devices offer additional features beyond basic measurement, including data storage, waveform capture, and advanced analysis algorithms. They provide detailed information about the characteristics of partial discharge activity, such as magnitude, phase, and frequency content. Partial Discharge Analyzers are useful for in-depth analysis and diagnosing the condition of insulation systems in high-voltage equipment, such as transformers, generators, and switchgear.

                                                                  High-Frequency Current Transformers (HFCT):

High-Frequency Current Transformers, commonly known as HFCTs, are sensors used to detect partial discharges in cables and equipment. The HFCT is placed around the cable or attached to the equipment under test, and it measures the high-frequency current induced by partial discharge events. The electromagnetic field generated by the PD is transformed into a measurable current signal, which can then be analyzed to determine the presence and severity of partial discharge activity. HFCTs are frequently used in the power industry for online monitoring and diagnostics.

                                                                                    Ultrasonic Detectors:

Ultrasonic Detectors are devices employed to detect and locate partial discharge activity by capturing acoustic signals. Partial discharges generate ultrasound waves due to the high-frequency electrical activity. Ultrasonic Detectors convert these ultrasound waves into audible or visual signals that can be analyzed by technicians. By detecting and analyzing the ultrasonic emissions, these devices enable the identification of the source, magnitude, and severity of partial discharge events. Ultrasonic Detectors are commonly used in the insulation testing of power cables, switchgear, and other high-voltage equipment.

                                                                                  Capacitive Couplers:

Capacitive Couplers are devices used to tap into the electrical insulation system and extract partial discharge signals for measurement. They provide a safe and non-intrusive means of monitoring PD activity without direct contact with the equipment under test. Capacitive Couplers are connected to the equipment using high-voltage cables, and they capture the PD signals for further analysis. These devices are widely used in applications where it is essential to monitor the condition of insulation systems continuously, such as in high-voltage substations and power plants.

                                                                           Acoustic Emission (AE) Sensors:

Acoustic Emission (AE) Sensors are highly sensitive devices that detect the acoustic emissions generated by partial discharges. These sensors are placed in close proximity to the equipment or insulation system and capture the high-frequency sound waves produced by PD events. The acoustic signals are then processed and analyzed to identify the presence and intensity of partial discharges. AE Sensors are particularly useful for detecting PD in sealed or inaccessible systems, such as gas-insulated switchgear or high-voltage cables. They enable early warning of insulation degradation and can help prevent catastrophic failures.

It is important to note that the selection of equipment for partial discharge detection may depend on various factors, including the specific application, voltage levels, and the type of equipment being tested. Different industries and sectors may have their own specialized equipment tailored to their specific needs. Consulting with experts or professionals in the field will help determine the most suitable equipment for a particular situation.