Feature
- Continuous and real-time monitoring of switchgear partial discharge diagnostics
- Phase Resolved PD (PRPD) diagram (actual and historical) displayed on SWICOM and exportable
- Direct measurement technique to achieve higher sensitivity
- Interface to existing capacitive couplers under use for voltage indicator systems (VIS)
- Long- range measurement across multiple cubicles (up to 10)
- Calibration to increase accuracy of measurements and KPIs
- Frequency band tuning to increase sensitivity
- Line voltage measurement to acquire phase information
- Three-phase acquisition and identification of problematic phase
- Tested according to standard procedures based on IEC 60270
- Easy to install in low voltage auxiliary compartment
- Very compact and DIN rail mounted
Specification
| PD Measurement Parameters | Value |
| Measurement principle | Capacitive (it can be used with existing coupler) |
| PD Channels per PDCOM | three (one per phase) |
| Number of PDCOM connectable to SWICOM | up to 3 |
| PDCOM Panel coverage | Up to 10 panels |
| Online monitoring | Yes |
| DAQ resolution | 16bit |
| PD dynamic range | 80dB |
| Typical sensitivity | 100pC |
| Programmable preamplification | +-20db |
| Measurement Frequency range | Center frequency 0-10MHz, bandwidth 200kHz |
| Noise suppression | Yes |
| Number of phase/magnitude windows for PRPD | 256×256 |
| Power frequency range | 50Hz, 60Hz |
| Power line synchronization | Internal, three phases individually |
| Supply voltage | 12VDC to 24VDC |
| Consumption | 15W |
| Daisy chaining | RJ45 |
| Operating temperature | -30°C +55°C |
| Storage temperature | -30°C +80°C |
| Dimension | 161,4 mm x 115,22mmx 106,92mm |
| VIS installation requirement for cabling | Measured through same capacitive coupler |
| PD event recording | Strength, time, power line voltage and phase, up to
100.000 PD events |
| PD Instantaneous measurements | Partial discharge intensity (following IEC), pulse repetition rate (total and above three different thresholds),
peak-to-noise, PD-indicator |
| Displayed measurements summary | Summary statistics of instantaneous measurements, PD presence indicator and trends indicators |
| Alert types | Traffic lights: green, yellow and red |
| Internal storage | Analysis history of at least 100.000 PD events (all channel, RAM) |
| Calibration | Procedure outlined during commissioning on site |
| Capacitive coupler requirements | 15pF-250pF (above 50pF is preferable) |
| VIS installation requirement for cabling | Installation kit provided. Short cabling, shielded cable a plus, preferred length below 100cm connection installation kit-PDCOM kept short as well |
| Interfaces | Serial/USB, CANBUS, Ethernet |
| EMC | IEC 60255-27 |
