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
| Parameter | Specification |
| UHF Frequency Range | 300–1500 MHz |
| Measurement Range | 0–75 dBm |
| Measurement Accuracy | ±1.5 dB |
| Average Effective Height | ≥10 mm |
| Detection Sensitivity | ≤6.5 mV/m (17 dBμV/m) |
| Dynamic Range | ≥40 dB |
| Pulse Current Measurement Range | 0–1500 pC |
| Pulse Current Accuracy | ±10 pC |
| Communication Interface | RS485 |
