Load
Profiling & fingerprinting
Power quality · LV network
NX31 LV transformer monitor
An IP67-rated low-voltage transformer monitor for permanent installations and temporary field deployments.
Open datasheetPDF · 2.2 MB
200kHzAnalog sampling per circuit
0.1 %Voltage accuracy
IP67Ingress
1 µsGNSS timing (optional)
20 yrRetention
Transformer-level visibility
The NX31 provides four current-monitoring channels, each sampled at 200 kHz. The base model monitors a single feeder and can be extended to two or three feeder circuits.
It supports standards-compliant power quality reporting, load profiling, connected load identification, abnormal event detection and connection impedance estimation across the low-voltage network.
Feeder-level analytics and asset insight give distribution teams a clear picture of bidirectional flows, congestion, voltage compliance and maintenance need as power flows become more dynamic.
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 synchronised waveforms at 200 kHz with GNSS timing accuracy (optional addition) down to 1 µs.
Enables waveform event correlation across multiple meters and network locations.
Supports standards-compliant power quality and revenue reporting.
Supports standardised power quality reporting and analysis.
Estimates supply impedance to monitor connection integrity and detect degradation.
Provides early warning of unsafe operating conditions and degraded supply quality.
Records continuous load-current profiles at 10-second intervals.
Helps identify large loads switching on and off, supporting connected-device fingerprinting.
Technical specification
Show full technical specification
General
| Events & notifications | Real-time anomaly detection with instant event alerts.GNSS-synchronised timestamps with microsecond accuracy (optional). |
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Analog sampling frequency
| Revenue | 20 kHz per circuit |
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| Power quality | 200 kHz per circuit |
Power quality metrics
| Harmonics | Harmonics, sub-harmonics and interharmonics from 5 Hz to 10 kHz |
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| Waveform capture | 20 kHz for 10 cycles + GNSS200 kHz for 1 cycle + GNSS |
Reporting
| Revenue | HHR & TOU (in HERM, EIEP3 formats)Active & reactive, inject & extract |
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| 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 |
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| 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 |
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| Ingress | IP67 |
| Protection class | II |
| Dimensions | 221 mm × 145 mm × 55 mm |
Data memory
| Reports & events | 512 MB storage |
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| Retention | 20 years |
| Encryption | 256-bit AES |
Communication
| Standard | Cellular LTE CAT-M1 NB-IoT (eSIM) |
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| Option | NR+ (mesh) |
Standards & compliance
| AS/NZS | 61439.1:201610.9, 10.9.2, 10.9.3, 10.9.4, 11.9 |
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Ordering options
Product downloads
Preview PDF Grid-edge monitoring
NX31
LV transformer monitoring, load profiling and power quality at 200 kHz per circuit.
PDF · 2 pages · 2.2 MBOpen PDF
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