Product · three-phase energy meter · wi-fi

IEMTR-EM4423-W

A three-phase power meter for the incomer or a three-phase machine, reporting over Wi-Fi. Four DIN modules, split-core CTs or flexible Rogowski coils plugged in on one lead, and everything from per-phase power factor to harmonics, on the same board as the single-phase units.

iemtr-em4423-w · three phase · wi-fi shipping
photo: meter on din rail, three split-core cts
Voltage
3 × 400 V
Accuracy
Class 1
Current
to 3000 A
incomer to dashboard · your label · your platform
Three phase
3p4w · 3p3w · 1p2w
To 3000 A
0.33 v cts or rogowski coils
Power quality
thd · harmonics to 41st · demand
What it is

The incomer, and everything about it

One meter on the three-phase supply gives the number every other reading is measured against: total demand, per-phase balance, power factor and how clean the supply is. It joins the same Wi-Fi as the IEMTR-EM165-W, usually from an IESG-R250, so a whole board reports through one router. For sites without Wi-Fi there is the IEMTR-EM4423-L.

  1. Meters a three-phase supply in 3P4W, 3P3W or single-phase wiring, selected on the front
  2. Takes split-core 80 or 100 A CTs, or Rogowski coils from 400 to 3000 A, on one plug-in lead
  3. Reports per-phase and total V, A, kW, kvar, kVA, PF and Hz, with min, max, average and demand
  4. Measures THD and individual harmonics to the 41st on voltage and current
  5. Records import and export energy per phase and in total, on two tariffs, with a 42-day load profile
Data path
  1. supply · 3 cts or rogowski coils
  2. iemtr-em4423-w · wi-fi
  3. iesg-r250 · iot core
  4. your dashboards and alerts

How it is used

typical deployment · this unit lit
deployment · the incomer and two sub-circuits
3 Wi-Fi meters reporting through a IESG-R250 to the platform site · distribution board wi-fi 4g IEMTR-EM4423-W incomer · 3-phase IEMTR-EM165-W circuit 2 · 100 a ct IEMTR-EM165-W circuit 3 · 100 a ct IESG-R250 4g router · wi-fi ap IOT CORE mqtt over tls YOUR DASHBOARDS alerts · api
A three-phase meter on the incomer alongside two single-phase meters on sub-circuits, all joining the Wi-Fi of an IESG-R250. The lit unit is this product. Total demand from the incomer, and where it goes from the sub-circuits, on one dashboard.
Scenario 01 · whole-site demand

Meter the incomer

A three-phase supply into a workshop, a farm or a commercial unit. The meter on the incomer gives total kW, kWh and power factor per phase, which is the baseline every other reading on the site is compared against.

pairs with IESG-R250 · IEMTR-EM165-W downstream
Scenario 02 · three-phase plant

One meter on a three-phase machine

Compressors, chillers, pumps and CNC machines on their own three-phase feed. Phase imbalance and power factor are visible per machine, which is where motor and bearing problems first show.

pairs with IESG-R250 · or the site's own wi-fi
Scenario 03 · landlord and tenant

Split a three-phase supply fairly

Industrial units where one supply feeds several tenants. MID approved, so the readings can go on an invoice, with the single-phase meters picking up the smaller tenants.

alternative IEMTR-EM4423-L where wi-fi cannot reach

Delivered as yours

our name appears nowhere on it

Branding and finish

Your logo and product name on the label and the packaging, and your details on anything the end customer reads.

Software and firmware

Wiring type, CT set, reporting and platform credentials set before it ships, plus a dashboard on your domain rather than a generic portal.

Documentation and support

Installation instructions and a CT and Rogowski selection guide in your name, written for the electrician who will fit it.

Specification

class 1 · iec 62053-21
Type
three phase · 3P4W, 3P3W or 1P2W · bidirectional
Voltage
3 × 230/400 V nominal · 100–415 V L-L · 50 or 60 Hz
Current
0.33 V CTs, 80 or 100 A split-core · Rogowski 400, 600, 1000 or 3000 A · one RJ45 lead
Accuracy
Class 1 (IEC 62053-21) · Class 2 reactive (IEC 62053-23) · V and A 0.5%
Measured
per phase and total V · A · kW · kvar · kVA · PF · Hz · THD · harmonics to 41st · demand
Energy
import, export and net · per phase and total · two tariffs · 42-day load profile
Wireless
2.4 GHz Wi-Fi · external antenna · Modbus TCP · MQTT
Wired
RS485 Modbus RTU · S0 pulse · 1 × relay 3 A at 250 V AC · tariff input
Display
backlit LCD · three buttons · IP51 front · -25 to +55 °C
Enclosure
72 × 100 × 68 mm · 4 DIN modules · 92 × 92 panel adaptor available
Wi-Fi Modbus TCP Modbus RTU Rogowski Split-core CT Power quality

A three-phase supply you need to understand?

Tell us the supply size and whether it is cable or busbar. We will pick CTs or coils to suit, set the wiring type and quote per unit.