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Pinaxa Partial Discharge Monitoring

Partial Discharge Monitoring

Introduction & Value Proposition

Partial Discharge (PD) is one of the earliest indicators of insulation degradation in high-voltage electrical equipment. Undetected PD can lead to insulation failure, unplanned outages, safety risks, and costly asset damage. The PINAXA system enables real-time detection and analysis to support predictive maintenance.

Hardware & Sensor

The PINAXA platform supports a versatile range of sensors designed for diverse high-voltage environments.

PD Sensors:
  • HFCT Sensors: Non-intrusive, clamp-on sensors ideal for transformers, cables, and generators.
  • UHF Sensors: Designed for GIS and metal-enclosed equipment with high noise immunity.
  • TEV Sensors: Optimized for MV/HV switchgear panels and fast risk ranking.
  • Acoustic Sensors: Useful for PD localization in transformers and rotating machines.
Monitoring Modules:
  • HMulti-channel units: Available in 4, 8, 12, or 16-channel configurations.
  • Analysis: Features advanced digital filtering and Phase-Resolved Partial Discharge (PRPD) analysis.

Applications Across Critical Assets

The PINAXA system provides tailored monitoring solutions for all major high-voltage assets.

  • Power Transformers: Online monitoring of windings and bushings to prevent catastrophic failure.
  • Gas Insulated Switchgear (GIS): Continuous UHF-based monitoring with high noise immunity.
  • Switchgear & Control Panels: Identification of surface discharge and tracking for enhanced safety.
  • Cables & Terminations: Support for fault localization and early joint defect detection.
  • Rotating Machines: Trending PD activity over time to avoid forced shutdowns.

Technical Specifications

Parameter Specification
Measurement Type Online & Offline Partial Discharge
Bandwidth HF: up to 50 MHz / UHF: 300 MHz – 3 GHz
Compliance IEC 60270, IEC 62478, IEEE 1434
Interfaces Ethernet, Modbus TCP/IP, IEC 61850 (Optional)
Environment Suitable for outdoor substation environments

Connectivity & Intelligence

  • Built-in diagnostics: Duval Triangle & Rogers Ratio
  • Remote access: Integrated web server and Wi-Fi
  • Protocols: MODBUS TCP/RTU, DNP3, optional IEC 61850
  • Alarms: 5 configurable digital relay outputs