Data sheet

Power Meter
Nexus II

· ‘
Nexus II is a power meter for electrical parameters
with local indication and communication, capable of
measuring instantaneous values, cumulative,
predictive and power quality. It has a LED display
with seven segments and keyboard with 4 keys, in
which you can navigate through the measured
quantities and configure the instrument locally.
Through its serial interface it is possible to read the
measurements, configure the meter and update the
firmware.

Characteristics

· Electrical quantities measured: voltage, current, frequency, power, power factor, energy, demand,
Total Harmonic Distortion and voltage and current unbalance.
· Bright LED display with four digits for clear visualization of the values.
· Navigation via keyboard with four keys.
· RS485 serial port with Modbus RTU protocol, which allows to read the measurements and set
parameters.
· Firmware upgrade via serial communication, which allows to have a product always updated.
· Compliance with IEC 61557-12.
· IBIS_BE is the software that allows configuration, which allows to configure the meter, view the
measurements and update the firmware.
· Universal configurable network: unbalanced three-phase with neutral, three-phase balanced or
unbalanced and single-phase.

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Instantaneous value:
Phase voltage ü
Line voltage ü
Phase current ü
Neutral current ü
Frequency ü
Active power ü
Reactive power ü
Apparent power ü
Power Factor ü

Energy:
Forward and reverse Active energy ü
Forward and reverse Reactive energy ü
Apparent energy ü

Demand:
Current ü
Active power ü
Reactive power ü
Apparent power ü

Power Quality:
THD of voltage and current ü
Displacement PF ü
Unbalance ü

Technical Data
Samples per cycle 64
Harmonics Up to 31
Voltage range 50...300VFN, 86…515VLL
Current 1A, 5A
Current range 50mA…6A

Voltage input: £ 1mA.

Consumption
Current input: £ 0,2VA.

Frequency 50; 60 Hz ±10%

Communication Serial interface RS485 Protocol Modbus RTU

IEC 61557-12
Standards
IEC 61010-1

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Power supply

Range 85 … 265Vac/90…300Vdc

Consumption 3VA

Serial interface

Type RS485

Protocol Modbus RTU

Firmware upgrade Encrypted

Accuracy class:

Current Class 0.5 according IEC 61557-12

Voltage Class 0.5 according IEC 61557-12
Active Power (kW) Class 1 according IEC 61557-12
Reactive Power (kVAR) Class 2 according IEC 61557-12
Apparent Power (kVA) Class 1 according IEC 61557-12
Power Factor Class 1 according IEC 61557-12
Demand of Current Class 1 according IEC 61557-12
Demand of Active power Class 1 according IEC 61557-12
Demand of Reactive power Class 2 according IEC 61557-12
Demand of Apparent power Class 1 according IEC 61557-12
Frequency Class 0.2 according IEC 61557-12
Active Energy Class 1 according IEC 61557-12
Reactive Energy Class 2 according IEC 61557-12
Apparent Energy Class 1 according IEC 61557-12

Electrical test

High voltage IEC 61010-1

Pollution degree IEC 61010-1

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Mounting

Enclosure 96 x 96, 112 mm depth

Fixation Two clips

IP50 Enclosure
Protection degree
IP20 Terminal

Weight 0,35 kg

Mechanical requirements

Vibration Amplitude: 0,35 mm; frequency = 25 Hz according IEC61557-12

Environment conditions (IEC 61557 -12)

Rated operating range -25...+70°C

Limited range of operation -25...+70°C
Limit range for storage and shipping -40...+85°C
Humidity 75%
Altitude 2000m
Measuring category CAT III
Pollution degree II
Protection degree II (double isolation)

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Wiring Diagrams

Three phase system with Three phase system without

neutral neutral

Three phase system without

Three phase system without neutral and 1 CT
neutral and 2 CTs

Single-phase system

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Diagrams for installation serial interface RS485

IBIS_BE configuration software

IBIS_BE is the software that allows configuration, display and update the product firmware.

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Precautions
Make sure that the voltages and currents to be connected to the instrument are compatible with the specifications and that the
connections are according to the diagrams.

Instruction Set

Respect the ambient temperature range. In the installation area it must be observed values for vibration, dust and humidity,
altitude, which must remain within the limits determined by the type of housing and protection of the climate group, listed on this
data sheet. A pair of metal clips does fixation. The connections have be done using terminals.

Instruction of Use
Check the connection diagrams and the user manual. Configure the PT and CT ratio, network type and the communication
parameters (address, baud rate and byte format) according to the application.

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Dimensions (mm)

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Contact

ABB Ltda.
Highway Senador Jose Ermirio de Moraes, km 11,
Without number- Aparecidinha
Sorocaba – São Paulo
CEP 18087-125
Email: abbatende@br.abb.com

Note:

We reserve the right to make technical changes or modify the

contents of this document without prior notice. With regard to
purchase orders, the agreed particulars shall prevail. ABB BR
does not accept any responsibility whatsoever for potential
errors or possible lack of information in this document.

CopyRight© 2015
All rights reseverd

Rev. 1.00

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