Load
Profiling & fingerprinting
Power quality · LV network
NF31 Network fault monitor
An IP67-rated continuous fault monitor and analyser for low-voltage fault detection and high-frequency event capture.
Open datasheetPDF · 2.4 MB
4MHzVoltage sampling
0.1 %Voltage accuracy
IP67Ingress
1 µsGNSS timing
20 yrRetention
Early warning for network faults
The NF31 provides four current-monitoring channels, with 4 MHz voltage sampling and 1 MHz current sampling. GNSS timing accuracy down to 1 µs supports synchronised event correlation.
Suitable for both permanent and temporary deployments, it supports advanced power quality reporting, high-frequency EMI analysis and distributed event correlation.
It helps detect unsafe conditions early: intermittent arcing, insulator tracking, cable degradation, vegetation contact, partial discharge, degraded supply quality and other failure precursors.
Quality
IEEE & IEC reporting
Faults
Anomaly & event alerts
Features & benefits
Measures three-phase and neutral current using Rogowski coil sensors.
Suitable for permanent installations and temporary field deployments.
Captures high-speed synchronised waveforms with GNSS timing accuracy down to 1 µs.
Correlates waveform events across multiple monitors and network locations.
Supports standards-compliant power quality, energy and event reporting.
Supports standardised power quality reporting and event analysis.
Estimates supply impedance to monitor connection integrity and detect degradation.
Provides early warning of unsafe operating conditions and degraded supply quality.
Performs high-frequency EMI and wavelet analysis to detect arcing, vegetation contact and partial discharge events.
Helps identify fault precursors early, improving network safety and reliability.
Technical specification
Show full technical specification
General
| Events & notifications | Real-time anomaly detection with instant event alerts.GNSS-synchronised timestamps with microsecond accuracy. |
|---|---|
| Fault analysis | RaptorVision™ waveform capture with adaptive sampling from 2 kHz to 4 MHz.Continuous 4 MHz wavelet analysis for high-frequency fault detection. |
Analog sampling frequency
| Revenue | 20 kHz per circuit |
|---|---|
| Power quality | 200 kHz per circuit |
| Fault analysis | 4 MHz voltage & 1 MHz current (16 MHz total) |
Power quality metrics
| Harmonics | Harmonics, sub-harmonics and interharmonics from 5 Hz to 10 kHz |
|---|---|
| Waveform capture | 20 kHz for 10 cycles + GNSS200 kHz for 1 cycle + GNSS |
| Conductive emissions | Voltage & current across three bands:2-10 kHz, 10-150 kHz, 150-900 kHz |
| Wavelet analysis | 4 MHz in 250 µs interval from 2 MHz to 15 kHz |
Reporting
| Revenue | HHR & TOU (in HERM, EIEP3 formats)Active & reactive, inject & extract |
|---|---|
| Power quality | IEEE 1159.3 (PQDIF)IEC 61000-4-3 (10 min-24 hr interval) |
| Load current | Sampled at 10 sec |
Performance & environment
| Voltage accuracy | 0.1 % |
|---|---|
| Current accuracy | 0.5 % |
| Freq. accuracy | 45-65 Hz, 0.1 % |
| Operating | -25 °C to +60 °C |
| Storage | -40 °C to +70 °C |
| Rel. humidity | 75 % mean |
Power, sensing & timing
| Supply voltage | 110-480 V AC |
|---|---|
| Consumption | 3 W peak |
| Rogowski coil | 10-500 mV/kA |
| Real-time clock | < 5 s/mth, NTP server or GNSS sync |
| Time accuracy | < 5 s/month (unsynchronised) |
| Sync method | NTP server when connected |
| Battery backup | 10 years at 23 °C, unpowered |
Physical & wiring
| Enclosure | Polycarbonate |
|---|---|
| Ingress | IP67 |
| Protection class | II |
| Dimensions | 221 mm × 145 mm × 55 mm |
Data memory
| Power & events | 512 MB storage |
|---|---|
| Retention | 20 years |
| Encryption | 256-bit AES |
Communication
| Standard | Cellular LTE CAT-M1 NB-IoT (eSIM) |
|---|---|
| Option | NR+ (mesh) |
Standards & compliance
| AS/NZS | 61439.1:201610.9, 10.9.2, 10.9.3, 10.9.4, 11.9 |
|---|
Ordering options
Product downloads
Preview PDF Grid-edge monitoring
NF31
Continuous network fault monitoring with 4 MHz voltage sampling and wavelet analysis.
PDF · 2 pages · 2.4 MBOpen PDF
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