Nova meter
The Augos Nova is the three-phase smart meter behind every electricity report, a permanent, DIN-rail unit measured to billing accuracy.
1 · What it is
The Nova is a compact, DIN-rail-mounted three-phase smart meter for commercial and industrial supplies. It clamps onto an existing feed with current transformers, measures the full electrical picture at the panel, and sends it to the platform over a wired or cellular link. It's a permanent fixture, the source of the continuous electricity data the reports run on: it captures interval data on board and reports down to 60-second updates, with full buffering and automatic backfill if the connection drops.
2 · What it measures
Three-phase voltage and current; active, reactive and apparent power; energy import and export, four-quadrant; power factor; frequency; demand; and harmonic distortion from the 2nd to the 31st. Bidirectional measurement supports sites with solar or other on-site generation.
3 · Specifications
| Accuracy | Active energy Class 0.5S; voltage and current ±0.2%; frequency ±0.02 Hz |
| Type approval | Type-tested to IEC 62052-11 and IEC 62053-22 at Class 0.5S, at an ISO/IEC 17025-accredited national metrology laboratory |
| Calibration | Traceable to NMISA, the national metrology institute (±0.04%); a random 10% of each batch independently calibrated at a SANAS-accredited laboratory before deployment |
| Voltage input | Configurable (100 V up to 380/660 V); L-N 10–380 V AC, L-L 90–660 V AC |
| Current input | Via CT, 1 A or 5 A rated; split-core CTs available |
| Frequency range | 45–65 Hz |
| Wiring | Star (3P4W) or delta (3P3W) |
| Power quality | 2nd–31st harmonic measurement; total harmonic distortion (THD) |
| Connectivity | RS485 (Modbus-RTU) standard; optional WiFi or 4G cellular |
| Data handling | On-device capture and buffering; automatic backfill to the platform after an outage |
| Auxiliary power | 85–265 V AC / 80–300 V DC, <3 VA |
| Environment | −25 to +70 °C; 5–95% RH non-condensing; up to 3000 m |
| Dimensions | 74 × 75 × 88 mm, DIN-rail mounted |
| Compliance | CE / IEC; EMC immunity to IEC 61000-4 level 4 |
4 · Where it's used
The Nova is the electricity source behind every module on the platform:
- Dashboard and Consumption breakdown, for consumption and demand across the hierarchy.
- Cost breakdown, Cost allocation and Bill verification, priced, split and checked against the bill.
- Time of use and Tariff comparison, for timing and tariff.
- Power factor & demand and Technical analysis, for the electrical detail.
- Charting, Data download and Triggers & alerts, to plot, export and alert on any reading.
See what we measure for electricity for the readings it captures.
5 · Common questions
Is the Nova accurate enough for billing?
Yes. It’s type-tested to IEC 62052-11 and IEC 62053-22 at Class 0.5S, the grade used for revenue and tariff billing, at an ISO/IEC 17025-accredited national metrology laboratory, and every unit is calibrated traceable to South Africa’s national measurement standards (NMISA). A random 10% of each batch is independently calibrated at a SANAS-accredited laboratory before deployment.
How disruptive is fitting it?
Minimal. It reads the supply through current transformers, with split-core CTs available, and is fitted by a qualified electrician as part of normal switchboard work.
Does it need to be wired into my network?
No. It reports over RS485 (Modbus-RTU) as standard, with optional WiFi or 4G cellular. It also captures and buffers on board and backfills automatically if the connection drops, so no readings are lost during an outage.
Does it work on a site with solar or generators?
Yes. It measures four-quadrant, both import and export, so on-site generation is captured rather than confusing the reading.
How often does it report?
Down to 60-second intervals. Because it draws power from the supply it’s reading, it isn’t limited by a battery and can report at high resolution.