Archai AE120 A Series single-phase smart meter — display rendering

Display rendering – not a photograph of the actual product

Display rendering of the new AetherEdge™ enclosure. The ratings on this page come from the Rev1.0 draft manual; lettering in the rendering is not a source for ratings or approvals, and the nameplate of the delivered meter is authoritative.

AE120A SeriesSINGLE-PHASE SMART METER

Single-Phase Smart Meter

The AE120 A Series is a single-phase smart meter in the new AetherEdge™ enclosure. A plug-in 3G cellular or WB-PLC + RF module provides remote communication with the head-end system over DLMS/COSEM; an internal latching relay, an optical port and an RS-485 interface complete the meter. The values on this page come from the Rev1.0 user manual, a draft for approval.

Single phaseDLMS/COSEMPlug-in communicationRev1.0 draft
SPECIFICATIONS
ConnectionSingle phase · terminal arrangement LLNN
Active energyClass 1 · IEC 62053-21
Reactive energyClass 2 · IEC 62053-23
Reference current5 A
Starting current4 ‰ Ib
Voltage, maximum current and frequencyBeing confirmed for the A Series — not published in this draft
Pulse constant (LED)1000 imp/kWh · 1000 imp/kvarh
Operating temperature−40 °C to +70 °C
Storage temperature−40 °C to +85 °C
Humidity≤ 95 %
Atmospheric pressure63 kPa to 106 kPa
Degree of protectionIP54
DisplayLCD with 8 digits; auto-scroll, manual and power-off display modes
ButtonsManual display button; sealed demand-reset button
Optical portLocal reading and configuration, 9600 bit/s
Remote communicationPlug-in module: 3G cellular (GSM/GPRS 2G, UMTS/HSPA 3G) or WB-PLC + RF
RS-485RS-485 interface on the auxiliary terminals
Voltage circuit power≤ 2 W / 10 VA without communication · ≤ 5 W / 10 VA with communication
Current circuit power≤ 1 VA
Real-time clock≤ 0.5 s/day at reference temperature
BackupReplaceable battery keeps the display available without mains
WeightApprox. 1.04 kg
Overall dimensions W × H × D130.0 × 199.4 × 75.9 mm
Fixing centres140.0 mm vertical · 110.0 mm horizontal
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Source: AE120 A Series user manual, Rev1.0 draft for approval (4 November 2026). The values are draft design information, not test or certification results; values under review are not published.

Key features

  • Plug-in remote communication module: 3G cellular (GSM/GPRS 2G and UMTS/HSPA 3G) or WB-PLC + RF.
  • DLMS/COSEM implementation for interoperability with the head-end system, with encrypted communication data.
  • Internal magnetic latching relay for load control by parameter configuration or by communication command.
  • Four-quadrant measurement of active and reactive energy, with real-time power, voltage, current and power factor.
  • Local or remote software upgrade; optical port and RS-485 interface for local access.

Meter functions

Measurement

  • Active and reactive energy registers in all four quadrants; instantaneous voltage, current, power and power factor; average voltage, current and power values.

Demand

  • Current and maximum demand with an integration period of 60, 300, 900, 1800 or 3600 s and 1 to 15 periods; maximum-demand reset by command, manually or at the end of billing.

Time of use and clock

  • Time-of-use tariff management; real-time clock with Gregorian calendar and automatic leap-year handling, synchronised over the remote channel with DLMS/COSEM.

Display

  • 8-digit LCD with auto, manual and power-down display modes; shows the relay status and the cause of a disconnection or reconnection.

Billing and load profiles

  • Monthly and daily billing profiles, a demand load profile and an hourly energy load profile; recording intervals configurable locally and remotely.

Load control

  • Internal relay operated through the DLMS disconnect control object; configurable limit values and limiters, for example for current and active power.

Events and alarms

  • Standard, fraud detection, communication, disconnector control and power quality event logs; power failure management; alarm registers with push on alarm.

Security

  • Encryption of communication data and DLMS/COSEM security set-up. Default security material for interoperability testing is not published.

Registration and push

  • Registration push when the meter is first installed; end-of-billing data, event logs and energy data in pull mode, and also in push mode over wireless WAN.

Firmware upgrade

  • Local upgrade over the optical (IR) port or RS-485 and remote upgrade over the communication module, according to the DLMS/COSEM specification.

Communication

  • Optical port for local reading and configuration; slot for a plug-and-play communication module.

Battery

  • Battery voltage monitoring with a low-battery alarm; the battery can be replaced without opening the meter housing.

Electrical immunity (draft design values)

Electrostatic discharge
Contact 10 kV · air 18 kV
HF electromagnetic field
80 MHz to 2 GHz, 30 V/m
Fast transient burst
4 kV / 100 kHz
Radio interference
CISPR 22, class B equipment
Surge immunity
6 kV
AC voltage / insulation strength
4 kV, protective class II

Standards referenced

These standards are referenced in the Rev1.0 draft manual. They are not certification claims or test results. Contact Archai for applicable approvals for your configuration.

  • IEC 62053-21 — Static meters for active energy (class 1).
  • IEC 62053-23 — Static meters for reactive energy (classes 2 and 3).
  • IEC 62052-11 — Metering equipment: general requirements, tests and test conditions.
  • IEC 62053-31 — Pulse output devices for electromechanical and electronic meters.
  • IEC 61010-1 — Safety requirements for electrical equipment for measurement, control and laboratory use.
  • IEC 62056 series, DLMS UA 1000-1 and DLMS UA 1000-2 — DLMS/COSEM data exchange, OBIS and interface classes.
  • IEEE 802.15.4-2020 — Low-rate wireless networks.

Dimensions

AE120 A Series — dimension drawing
Dimension drawing from the Rev1.0 draft manual (Figure 1.7-1), in millimetres: 130.0 × 199.4 × 75.9 mm (W × H × D); fixing centres 140.0 mm and 110.0 mm.
View full-size drawing ↗

Product downloads

The Rev1.0 user manual is a draft for approval, available in English, Korean, Spanish, German, French, Russian and Arabic. The translations are AI translations of the English draft; native review is pending.