Power Meter Unit

Device Description

Inavitas PMU (Power Meter Unit) is a new generation network analyzer that measures and enables real time monitoring of energy parameters. Inavitas PMU (Power Meter Unit) monitors up to 5 channel three phase circuits or 15 channel single phase circuits or any combination of single or three phase circuits.
This flexibility makes Inavitas PMU perfect for multi-tenant facilities such as distribution substations, office buildings, data centers and shopping malls. The user can monitor all energy parameters in real time and configure current and voltage polarities, transformer ratios and serial communication settings easily via Inavitas PMU user interface software.

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Device Specification

Supply Voltage Range

9-18 VDC / 18-36 VDC

Nominal Supply Voltage

12 VDC / 24 VDC


ARM Cortex-M4 32 Bit


128 kB


64 kB

Watchdog Timer

System Reset / 5 sec

Power Consumption

2.3W @ 230 VAC5W @ 24 V DC

Real Time Clock



Inavitas PMU Configuration Software

Communication Specifications

Communication Protocols

802.11 b/ Modbus-RTU (Slave) g/n

Serial Interfaces

RS-485 (Isolated), Micro USB C Type 2.0

Serial Communication Speed

1200bps – 115200bps

Connection Type

3-Wired (A, B, GND), Semi Duplex

Data Type

8 Bit Data, No Parity, 1 Bit Stop


2.5 kVAC, RMS 1 Minute

Usb Data Transfer Speed

480 Mbit/s

Power Measurement Specifications

Voltage Measurement Range

0 – 275 VAC,RMS (L – N), 0 – 500 VAC,RMS (L – L)

Current Measurement Range

1 – 4000 AAC,RMS (Split Type)


50 / 60 Hz ±5%

Voltage Channels

3P + N (3 Phase Voltage and Neutral)

Current Channels

5 x 3P (Either 15 Phases or 6 Single Phases)

Sampling Frequency

128 Sample / Cycle

Voltage Accuracy


Current Accuracy


Active Energy Accuracy

IEC 62053-22 Class 0.5S

Accuracy Class

IEC 61000-4-30 Class S

Detailed Measurements

Outage / Maximum Voltage, Current and Power Demand

Programmable Alarms

Under Voltage / Over Voltage / Low Current / High Current

Environment Conditions

Operating Temperature

-25°C / +85°C

Storage Temperature

-40°C / +70°C

Operating Humidty

25% – 95% RH

Protection Class


Mechanical Specifications

Device Dimensions (W x H x D)

35mm x 100mm x 115mm