UHF and Pulse Current Partial Discharge Sensor
The UHF and Pulse Current Partial Discharge Sensor is designed for continuous online monitoring of partial discharge activity in medium- and high-voltage electrical equipment. By integrating Ultra High Frequency (UHF) detection technology with pulse current measurement, the sensor provides comprehensive insight into insulation degradation and potential defects before failures occur.
The sensor captures partial discharge signals across a frequency range of 300–1500 MHz while simultaneously measuring pulse current discharge levels up to 1500 pC. Collected data, including amplitude values, time-domain waveforms, PRPD (Phase-Resolved Partial Discharge) patterns, and PRPS (Phase-Resolved Pulse Sequence) spectra, are transmitted to the monitoring system through an RS485 communication interface.
With high sensitivity, excellent noise immunity, and reliable long-distance communication, the sensor is well suited for condition-based maintenance and predictive asset management in modern power systems.
Key Features
Real-time online partial discharge monitoring
Combined UHF and pulse current detection technology
High sensitivity for early defect detection
Strong anti-interference capability
Stable performance in harsh electrical environments
Long-distance and reliable RS485 communication
Supports waveform, PRPD, and PRPS analysis
Suitable for 24/7 continuous monitoring
Applications
Gas-Insulated Switchgear (GIS)
Medium-Voltage and High-Voltage Switchgear
Ring Main Units (RMU)
Power Transformers
Power Cable Systems
Electrical Substations
Industrial Power Distribution Networks
Technical Specifications
ParameterSpecificationUHF Frequency Range300–1500 MHzMeasurement Range0–75 dBmMeasurement Accuracy±1.5 dBAverage Effective Height≥10 mmDetection Sensitivity≤6.5 mV/m (17 dBμV/m)Dynamic Range≥40 dBPulse Current Measurement Range0–1500 pCPulse Current Accuracy±10 pCCommunication InterfaceRS485
