Partial Discharge Detectors
Partial discharge (PD) is one of the most reliable early indicators of insulation degradation in high-voltage cables, transformers, switchgear, and rotating machines. Green Watt supplies a range of PD detection instruments — from entry-level analogue detectors to sophisticated multi-channel digital systems — enabling maintenance teams to locate and quantify PD activity without taking equipment out of service.
Key Features
- Penta-PD: five simultaneous channels with UHF, TEV, acoustic, and HFCT inputs
- Phase-resolved partial discharge (PRPD) pattern display for defect classification
- GPS-tagged measurement logging for site mapping
- Digital model with IEC 60270-compliant calibration pulse injection
- Wireless sensor option for remote or hazardous locations
- Narrowband and wideband detection modes
- Rechargeable battery with minimum 8 hours field operation
- Compact handheld form factor with touch screen interface
Applications
- ›Condition assessment of XLPE and PILC power cables
- ›Transformer bushing and winding insulation surveys
- ›GIS compartment integrity checks
- ›Rotating machine stator insulation monitoring
Technical Specifications
| Penta-PD Channels | 5 simultaneous measurement channels |
| Sensor Types | UHF, TEV, HFCT, Acoustic (AE) |
| Display | Phase-resolved PD (PRPD) patterns |
| Battery Life | Minimum 8 hours |
| Standard | IEC 60270 (calibration) |
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