Electro Industries/GaugeTech Nexus 1450 User manual

Metering and Communication
• 0.06% Energy Accuracy; Meets ANSI C12.20 0.1
Accuracy Class
• Multi-Gain™ Sensing Provides Highly Accurate
Measurements over a Wide Dynamic Range
• Advanced Web Server with Waveform Analysis Tools
• Resilient Cyber Security™ Protects Your Power
System Data
• 6 Available Communication Ports, with Modbus and
DNP3 Level 2 Protocols and RTU Master Capability
• Two Independent Ethernet Ports, with Unique IP
Addressing, Port Control for Security, and Encrypted
Email on Alarm
• IEC 61850 Protocol with GOOSE Messaging
• Wideband Frequency (20-500) Hz Support
Advanced Power Quality Analysis
• IEC 61000-4-30 Class A Edition 3 Power Quality
Measurements
• IEC 61000-4-15 Class A Flicker Measurements
• IEC 61000-4-7 Class A Harmonic Measurements
• EN 50160 Power Quality Reports
• Up to 1024 Samples per Cycle Measurements
• New CORE™ Onboard Database Logging Architecture
• Easy Installation of Transducer and Separate Display
• Direct Physical Retrofit to Nexus®125X Series Meter/
Transducer with Greater Functionality
• Separate 3 Line LED Displays and New Color
Touchscreen LCD Display
Nexus®1450
Cyber Secure Power Quality Meter with Multiport Communication
Nexus®1450 Meter P70N Color
Touchscreen LCD Display
P40N+
Remote
Multifunction
LED Display
New
New
www.electroind.com
Electro Industries/GaugeTech™

Introduction
Electro Industries’ Nexus®1450 meter is a powerful power quality meter
that provides accurate electrical energy measurements. It offers advanced
capabilities for power quality analysis and determining electrical power
reliability. The meter is a transducer base with a separate display. The
transducer base retrofits to existing Electro Industries’ Nexus®1250 and
1252 meters. The Nexus®1450 meter is ideal for existing switchboard
panels since it can be installed without cutting panel doors. The separate
display mounts into existing analog meter knockouts.
Multi-Gain™ Sensing Provides
Superior Accuracy
The Nexus®1450 meter utilizes EIG’s latest measurement-sensing tech-
nology - Multi-Gain™. Multi-Gain™ technology uses two sensors on the
current inputs - a high gain sensor and a lower gain sensor. Each sensor
simultaneously measures the current signal coming from the external
current transformers. The meter’s intelligent processing looks at the signal
level and determines the optimal sensing circuit for the highest accu-
racy measurement. With this technique, the meter has 0.06% accuracy
throughout an extended measurement range, which is a defining trait of
Nexus®Series meters.
The meter’s standard pickup range starts as low as 1 mA and high
accuracy is attained at 25 mA. With Multi-Gain™ metrology, the same
meter can be used on both 5 A secondary and 1 A secondary CTs. The
meter should maintain high accuracy measurement throughout its
installed life.
Typical Accuracy Charts
Multi-Gain™ metrology gives the Nexus®1450 meter highly repeatable and stable
measurements throughout its measurement range
Four High Gain Sensors
Four Low Gain Sensors
2

Meter Accuracy Specification
Measurement
Voltage L-N 0.04% of reading
Voltage L-L 0.04% of reading
Current 0.04% of reading
Neutral Current 0.1%
Frequency 0.004 Hz
Watts 0.06% of reading
Watt-hour* 0.06% of reading
VAR 0.15% of reading
VARh 0.15% of reading
VA 0.06% of reading
Power Factor 0.15% of reading
THD 2.5% of reading
Precision Crystal Time Reference
The Nexus®1450 meter's internal clock crystal is accurate to 3.5 PPM
over the full operating temperature range and 5 PPM at over ten years of
use. This highly accurate, trimmed clock design allows the meter to main-
tain accurate time when running on crystal synchronization. The meter's
clock crystal will drift less than 6 seconds per month from (0-40) °C.
The meter offers additional time sync methods:
• Line frequency sync.
• DNP3 time sync.
• IRIG-B time sync.
• SNTP time sync.
Advanced Energy Meter for
Primary Loads
Use the Nexus®1450 meter for any critical metering application. In addi-
tion to highly accurate energy measurement, the meter features:
• Full 4 quadrant metering.
• Max/Min recording with timestamp.
• Extensive logging with 8 logs of programmable
historical profiles.
• Built-in CORE™ log provides pre-configured, automatic logging
of most metering parameters.
• Transformer and line loss compensation for both iron and
copper and total substation losses.
• Coincidental readings, e.g., PF or VARs at time of Peak Demand.
• Load aggregation/universal metering: aggregate or accumulate
different loads with pulse inputs. Utility commodities such as gas
and water can also be accumulated.
Perpetual Time of Use for Complex Metering
Set up multiple tariffs to meet any contractual obligation with the Nexus®
1450 meter's perpetual time of use (TOU) calendar. You program the
calendar only one time, unless your requirements change. Use your TOU
calendar for any energy parameter, stored data from pulses, or RTU Master
readings. TOU features include:
• Up to four customizable seasons.
• Flexible billing periods/rates/holidays/schedules.
• Cumulative and continuous cumulative demand.
* For 50/60 Hz measurement. The Nexus®1450 meter also supports
wideband accuracy for (20 - 500) Hz applications; full accuracy
specifications are given in the Nexus®1450 Meter Installation and
Operation Manual.
** (0.025 to 20) A at PF=1
Measurement
Voltage L-N 0.04% of reading
Voltage L-L 0.04% of reading
Current 0.04% of reading
Neutral Current 0.1%
Frequency* 0.001 Hz
Watts 0.06% of reading
Watt-hour** 0.06% of reading
VAR 0.15% of reading
VARh 0.15% of reading
VA 0.06% of reading
Power Factor 0.15% of reading
THD 2.5% of reading
Easily Configure Almost any TOU Usage Profile
3

Datalogging and Internal Storage
The Nexus®1450 meter provides advanced capabilities for storing mea-
sured values over time for trending and analysis. The meter has up to 4
GB of memory with up to 1.2 GB allocated exclusively to logging and user
storage. All logs use a FIFO buffer and roll over when full. The following
logs are available:
• Trending Logs:
• CORE™ log - the meter uniquely uses an internal SQL
database that automatically logs 172 metering parameters.
This ensures that most parameters are already logged so
that the meter provides data without a complex configuration
process.
• Historical logs - the meter supports eight configurable
historical trending logs of 64 data channels per log.
• System Events Security Log: This anti-tampering log
records all events in the meter with an associated timestamp. The
unit records:
• Resets.
• Meter programming
changes.
• Time changes.
• Power up/down.
• Change of V-Switch™ key.
• TOU profile changes.
• Password and security
events.
• Change of firmware.
• Power Quality Log: This log captures power quality
events, such as surges, sags, and transients, and lets you view
and analyze the data through power quality graphs, such as the
ITIC CBEMA Curve and SEMI F47 standards.
• Input Status Change Log: This log supplies
information on the state of the meter’s eight internal
digital inputs.
• Limit Log: The Limit/Alarm log can be set to record on high
and low conditions for up to 32 user programmable limits.
Chart of Memory for Logging
Log V1 - Maximum
# of Records
Days V2 - Maximum
# of Records
Days
System Events 16384 32768
CORE™ Log* 16384 163 32768 327
Log 1** 16384 163 32768 327
Log 2** 16384 163 32768 327
Log 3** 16384 163 32768 327
Log 4** 16384 163 32768 327
Log 5** 16384 163 32768 327
Log 6** 16384 163 32768 327
Log 7** 16384 163 32768 327
Log 8** 16384 163 32768 327
Digital Input 16384 32768
Limits/Alarms 16384 32768
Power Quality 16384 32768
Waveforms*** For 512 samples per cycle, 1
second waveform recording at 60
Hz: 682 records.
For 1024 samples per cycle, 1
second waveform recording at 60
Hz: 341 records.
* The CORE™ log automatically records readings for 172 parameters at
the logging interval. The default interval is 15 minutes. Days are based on
approximately 100 records per day.
** Logs 1 - 8 are user-assignable and allow 64 parameters per log. Days
are based on approximately 100 records per day.
*** The number of waveform records depends on the sampling rate and
the length of waveform recording. V1 offers up to 512 samples per cycle
recording and V2 offers up to 1024 samples per cycle recording.
4

Power Quality Measurements
Critical sensitive equipment and over utilized distribution systems must
be monitored for proactive system reliability improvements. Measure
power quality indices such as voltage anomalies, harmonics, flicker,
imbalances, and many other conditions with the Nexus®1450 meter. You
can then easily quantify your system reliability using this information.
Facilitate forensic engineering analysis of harmful events in your power
system with the meter's micro-second resolution recording of sag/swell
waveform events, including peak and duration of the event.
Certified to IEC 61000-4-30 Class A Ed. 3
The Nexus®1450 power quality meter is third party certified to measure
using the most stringent international power quality standards.
IEC 61000-4-7 Class A Harmonic and Interharmonic
Analysis
• View harmonic magnitudes to the 511th order for each voltage
and current channel, using EIG's Log Viewer™ software.
• Harmonic magnitudes and phase angles in real time are resolved
to the 127th order.
• Obtain THD, TDD, and K-Factor.
• Conduct power quality analysis at the high end of the harmonic
magnitude spectrum.
Harmonic Spectrum Analysis
IEC 61000-4-15 Class A Flicker Meter
• The Nexus®1450 meter measures flicker in compliance with the
IEC 61000-4-15 Class A standard.
• Operates on both 230 volt/50 Hz and 120 volt/60 Hz.
Limits/Alarms
Set multiple programmable limits for any measured value and for condi-
tions set up using a Boolean logic tree. The meter records events based
on your threshold settings. Trigger control events with limits that can
be used with timers and logic. In addition, the Ethernet ports can be
programmed to send emails on alarm.
EN 50160 Power Quality Reports
The meter calculates weekly EN 50160 power quality reports. Determine
power system reliability with these reports, which can be easliy accessed
from the meter's web server.
Power Quality Reporting
THD Trending
5

Waveform Recording
The Nexus®1450 meter records waveforms at a sampling rate of up to
1024 samples/cycle on multiple power quality events, including surges,
sags, and transients. 16-bit A/D conversion provides precise waveform
resolution. Both voltage and current recording offer pre- and post-event
analysis. Fault recording offers eight times full-scale capture capability.
Waveform recording for wideband frequencies is also supported. You can
program both hardware and software triggers to record a waveform.
View waveforms through either CommunicatorPQA®software, the meter's
web browser, or the EnergyPQA.com®cloud-based energy management
system. You can also download the waveforms to third party software for
analysis. Analyze the waveforms to determine the source of power quality
anomalies and then take steps to remedy the situation.
View High-resolution Waveform Events
Phasor Analysis
View phase angles and symmetrical components for voltage and current
with EIG's Log Viewer. This information can help you analyze electrical
system problems.
Analyze Power System Phasors
Resilient Cyber Security™
Protects Meter from Tampering
• Highly Secure, 32 Complex Character Passwords with 128-bit
AES Encryption.
• Password Fail Timeouts Virtually Eliminate Brute Force Hacking.
• An Admin and 10 Customizable Users.
• Four Roles with Customized User Permissions.
• Physical Seals and Sealing Switch Prevent Remote Hacking
or Tampering.
V-Switch™ Key technology
The Nexus®1450 meter has EIG's V-Switch™ key technology that lets you
upgrade meter functionality even after installation. This means you can
purchase what you need now and then upgrade whenever you need the
additional features. The available V-Switch™ keys are shown below.
Nexus®1450 Features V1 (Basic) V2 (Advanced)
Basic Measurements
Voltage, Current, etc. PPPP
THD and Harmonics PPPP
Time of Use PPPP
Power Quality Measurements
Waveform Recording PPPP
Sampling Rate 512 1024
Flicker PPPP
IEC 61000-4-30 Class A S A
EN 50160 Reporting PPPP
Storage
CORE™ Log PPPP
Custom Historical Logs PPPP
PQ Log PPPP
Waveform Log PPPP
Limit Log PPPP
Digital Input Log PPPP
Memory for logging 512 MB* 1200 MB*
Communication
Serial PPPP
Modbus over Serial PPPP
DNP3 Level 2 over Serial PPPP
RJ45 Ethernet PPPP
Fiber Ethernet PPPP
Modbus over Ethernet PPPP
DNP3 Level 2 over Ethernet PPPP
IEC 61850 PP
* The unit has 4000 MB flash memory for longer reliable life. Some of the
memory is allocated to wear-leveling and system use.
6

Advanced Communication
The meter has six standard communication ports that include four serial
ports and two Ethernet-based ports. The Ethernet ports consist of an ST
terminated fiber optic port and an RJ45 port. The Nexus®1450 meter can
communicate with many different SCADA or other systems simultane-
ously.
Details of Ports
• 6 standard Com ports.
• 4 serial ports - RS485 (one of the ports is RS485/RS232
selectable); RTU Master capability.
• 2 independent Ethernet ports - RJ45 and Fiber Optic, with
separate IP addresses, advanced port control, and encrypted
email on alarm. The RJ45 port supports DHCP and IPv6.
• Modbus RTU, Modbus ASCII, Modbus TCP/IP, DNP3 Level 2
communication.
• IEC 61850 protocol server (V2).
• IEC 61850 GOOSE server (V2).
• GOOSE cross trigger for distributed fault recording (V2).
• Ports can communicate simultaneously.
• Ports 3 and 4 can control up to four I/O modules each, acting as
an RTU master to slave bus devices.
• Encrypted email on alarm: email on exceeded limit, waveform
recording, status change, password tampering, and many other
conditions.
Standard I/O
8 Built-in Digital Status Inputs
• Inputs automatically sense whether the circuit is
externally wetted.
• If externally wetted, input up to 150 V DC is accepted.
• If internally wetted, the meter supplies the necessary voltage
for the control application.
• Inputs can be used as pulse accumulators for counting pulses
from other meters.
VAUX Input
• Supplies neutral to ground or aux voltage readings for synchro-
nizing schemes, for example, obtain the frequency, magnitude,
and phase angle on both sides of a switch or between generator
and bus voltage.
Two Standard Pulse Outputs
• Solid State, form A, 35 Ω
max on resistance.
• 120 mA continuous, 350
mA max for 10 ms.
• Peak voltage: 350 V DC.
• Switching rate max: 10/s.
• Support pulse-counting
applications.
The Nexus®1450 meter is a direct physical
retrofit to Nexus®1250 and 1252 meters.
* Two standard test pulses for Wh and VARh testing.
Rugged
Metal Case
Universal AC/DC
Power Supply
RS232/RS485 Port
RS485 Ports
Two Pulse
Outputs Eight Digital
Inputs
IRIG-B RJ45 Ethernet Port
Test Pulses*
Heartbeat
LED
Four Voltage Inputs
Four Current Inputs
Revenue Seal
Fiber-Optic
Ethernet
Port
7

Revenue Seal
The Nexus®1450 meter has a lockable cover for voltage and current
inputs, a demand and programming Reset button seal, and two physi-
cal meter seal locations. Seals other than demand/programming can be
ordered separately.
Case Seal
Demand/
Programming
Seal
Meter Voltage
and Current
Cover (Standard)
Case Seal
Revenue Seal Diagram
Optional I/O Modules
Analog Outputs:
• 1mAON4/1mAON8: 4 or 8 Analog Outputs, 0±1 mA, self-
powered, scalable, bidirectional.
• 20mAON4/20mAON8: 4 or 8 Analog Outputs, 4-20 mA, self-
powered, scalable.
• Wiring: Common Mode.
• Accuracy: 0.1% of Full Scale.
• Calibration: Self-calibrating.
• Scaling: Programmable.
• Ordering: Up to 4 Analog Output modules.
Analog Inputs:
• 8AI1: 8 Analog Inputs, 0±1 mA.
• 8AI2: 8 Analog Inputs, 0±20 mA.
• 8AI3: 8 Analog Inputs, 0±5 V DC.
• 8AI4: 8 Analog Inputs, 0±10 V DC.
• Wiring: Common Mode.
• Accuracy: 0.25% of Full Scale.
• Scaling: Programmable.
• Ordering: Up to 4 Analog Input modules.
Digital Inputs:
• 8DI1: 8 Digital Status Inputs Wet/Dry.
• Auto-Detect Up to 300 V DC.
Digital Dry Contact Relay Outputs:
• 4RO1: 4 Relay Outputs, 5 A, 250 V AC/30 V DC, Form C,
Latching.
• Ordering: Up to 4 Digital Dry Contact Relay Outputs.
Digital Solid State Pulse Outputs:
• 4PO1: 4 Solid State Pulse Outputs, Form A or C KYZ pulses.
• Maximum Pulse Speed: 20 pulses per second.
• Ordering: Up to 4 Digital Solid State Pulse Output modules.
I/O Module Accessories:
• PSIO: Power supply for up to 4 additional I/O modules (this
accessory may be needed when using three or more displays
and/or modules).
• MBIO: Mounting bracket for external I/O modules (required with
any external I/O module order).
Optional Displays (displays connect to any RS485 port):
• P40N+ multifunction LED Master display supplies visual display
of meter readings, has a USB connection for direct data
download, and can also be used as a master volt display. The
P40N+ display is ideal for analog ANSI meter retrofits.
• Optional Slave displays P41N+ (Ampere display) and P43N+
(Power display) can be daisy chained with a P40N+ master.
• P70N color touchscreen display offers multiple pre-configured
screens of meter readings and power quality data. It can be
mounted in a panel or as a retrofit to an existing ANSI meter
cutout using the SMKP70N mounting kit.
I/O Modules
P70N Color
Touchscreen Display
P40N+ Remote
Multifunction LED Display
RS485 Communication (Multifunction or Separate Function Displays)
RS485 to I/O Modules
Direct retrofit your existing
Nexus®1450 meter's I/O
and display.
Kwatt/KVAR Amps Multifunction
or Volts
8

WebView™ Energy Dashboard
Analyze Metering Data Without Needing Software
Using the Built-in Energy Dashboard
The Nexus®1450 meter utilizes a unique HTML5-based web server. This
new web server acts as an energy dashboard that lets you view real time
data. In addition, you can analyze stored historical logs, alarms, and wave-
form records using the dashboard. The WebView™ Energy Dashboard is
built on a responsive architecture, so that it works properly on handheld
browser-based devices, such as tablets and phones.
Navigate easily through multiple webpage views, getting detailed informa-
tion on energy usage and power quality:
• Real time voltage and current readings and detailed charts show
energy use over time.
• Energy usage, quadrant energy charts, and trending.
• Waveform event records, including zoom and pan.
• Status of digital inputs.
• Phasor diagram.
• Flicker readings, including PST and PLT.
• Symmetrical components.
• Detailed information for accumulators and aggregators.
• Meter information and diagnostic webpages for meter health
and status.
• View data directly from the meter's web viewer.
Historical Log Screen
Energy Screen
Phasor Screen
Web-based Waveform Recording Screen
Sample of Watt and VAR Trending over Webpage
Voltage Screen
9

3.03 in
[7.70 cm]
1.43 in
[3.62 cm]
0.17 in
[0.42 cm]
4.94 in
[12.55 cm]
3.57 in
[9.08 cm]
3.05 in
[7.75 cm]
4.43 in
[11.25 cm]
3.37 in
[8.57 cm]
4X 0.20 in
[0.50 cm]
3.37 in
[8.57 cm]
1.68 in
[4.28 cm]
4.00 in
[10.16 cm]
1.00 in
[2.54 cm]
1.07 in
[2.72 cm]
1.79 in
[4.55 cm]
5.25 in
[13.34 cm]
5.25 in
[13.34 cm]
2.56 in [6.51 cm]
2.80 in [7.12 cm]
3.35 in [8.51 cm]
3.74 in [9.51 cm]
Without
Sealed Cover
With
Sealed Cover
6.74 in [ 17.12 cm]
6.25 in [ 15.88 cm]
7.25 in [ 18.41 cm]
2X 4.00 in [10.16 cm]
10.70 in [27.19 cm]
2X 3.35 in [8.51 cm]
4X 0.22 in [0.56 cm] THROUGH-SLOT FOR #10 SCREW
Nexus®1450 Meter Base Dimensions
Nexus®LED/LCD Display Dimensions
Note 1: Mounting and I/O module details are in the Nexus®1450 Meter Installation and Operation Manual.
Note 2: P41N+ and P43N+ displays have the same dimensions as the P40N+ display.
Front Side
P40N+
Mounting or
P70N ANSI
Mounting Kit
- SMKP70N
P70N Mounting
P40N+
Side
P70N Right SideP70N Front
P40N+
Front
10
Dimensional Drawings

A
A
C
C
LOAD
B N
B N
LINE
Ia
Ib
Ic
N -
Vref
Vc
L +
Vaux
Va
AUXILIARY VOLTAGE
POWER SUPPLY
(DEPENDENT ON EQUIPPED SUPPLY OPTION)
FUSES
LO
LO
LO
HI
HI
HI
TEST BLOCK
SHORTING SWITCH OR
CTs
PTs
EARTH GROUND
EARTH GROUND
FUSE
EARTH
GROUND
B
B
LOAD
A C
AC
LINE
Ia
Ic
N -
Vb
Vc
L +
Va
POWER SUPPLY
(DEPENDENT ON EQUIPPED SUPPLY OPTION)
FUSES
LO
LO
HI
HI
TEST BLOCK
SHORTING SWITCH OR
CTs
EARTH GROUND
EARTH GROUND
FUSE
A
A
C
C
LOAD
B N
B N
LINE
Ia
Ib
Ic
N -
Vref
Vb
Vc
L +
Vaux
Va
AUXILIARY VOLTAGE
POWER SUPPLY
(DEPENDENT ON EQUIPPED SUPPLY OPTION)
FUSES
LO
LO
LO
HI
HI
HI
TEST BLOCK
SHORTING SWITCH OR
CTs
PTs
EARTH GROUND
EARTH
GROUND
FUSE
EARTH
GROUND
A
A
C
C
LOAD
B N
B N
LINE
Ia
Ib
Ic
In
N -
Vref
Vb
Vc
L +
Vaux
Va
AUXILIARY VOLTAGE
POWER SUPPLY
(DEPENDENT ON EQUIPPED SUPPLY OPTION)
FUSES
LO
LO
LO
LO
HI
HI
HI
HI
TEST BLOCK
SHORTING SWITCH OR
CTs
EARTH GROUND
EARTH GROUND
FUSE
3 Wire, 2 Element Delta Direct Voltage with 2 CTs
Important: The Potential between A, B, C and GROUND
must be less than 347 V AC.
3 Phase, 4 Wire 2.5 Element with 2 PTs, 3 CTs
4 Wire Wye, 3 Element Direct Voltage with 4 CTs 4 Wire Wye, 3 Element with 3 PTs and 3 CTs
Additional wiring diagrams for the meter are included in the Nexus®1450 Meter Installation and Operation Manual.
11
Wiring Diagrams

1800 Shames Drive, Westbury, NY 11590 1-877-EIMETER (1-877-346-3837)
Tel: [phone] Fax: [phone] Email: [e-mail]
www.electroind.com
Electro Industries/GaugeTech
™
E171702 031822 V.1.12
Ordering Information
Nexus®Base
Meter
Control
Power
Frequency
Range
Virtual
Switch
Option
Numbers:
Example: Nexus 1450 D2 60 V1
Nexus®
1450
Meter
D2
Universal (96 - 276) V @
50/60 Hz or DC
60
60 Hz
V1
Standard Nexus®
1450 Meter
512 MB memory
logging / 512 s/c
D
(18-60) V DC
50
50 Hz
V2
V1 + 1200 MB
memory logging /
1024 s/c
Specifications
Voltage Input Range:
• Absolute range between any
voltage inputs: (20 to 720) V AC
• Pickup voltage: 5 V AC
Isolation:
• Voltage Inputs isolated to 2500 V AC
Current Input Range:
• Supports Class 2 and Class 20 in
one input configuration
• Programmable to any CT ratio
• Fault current recording to +/- 80
A peak
• Pick-up current: 1 mA
Current Input Withstand
Capability (at 23 °C):
• 100 A for 10 seconds
• 300 A for 3 seconds
• 500 A for 1 second
Burden:
• Voltage Inputs: 5 MΩ per voltage input
• Current Inputs: 0.028 VA per phase
max at 20 A
Frequency Ranges:
• Nominal: (42.5 to 69.5) Hz
• Wide band: (20 to 500) Hz
• With wide band Frequency, some
features are disabled-see meter manual.
Environmental:
• Operating temp: (-25 to +70) °C
• Storage temp: (-40 to +70) °C
• Humidity: Up to 95% RH
non-condensing
• Protection Class: Meter - IP30; P70N
Display - IP65, indoor use only
Measurement Method:
• Programmable sampling rate up to
1024 samples/cycle
• High resolution, simultaneous sampling
of all analog inputs
• Multi-Gain™ sensing method
• True RMS
Accuracy Ratings:
• Energy measurement accuracy at 0.06%
(0.025 A to 20 A at PF=1)
• Full accuracy specifications available in
Nexus®1450 Meter User Manual
• Time clock: 3.5 ppm @ (-25 to +70)
°C - less than 10 s drift/month on
crystal sync; 2.0 ppm typical from (0 to
+40) °C - less than 6 s/month drift
Update Rate:
• 1 Second - High Accuracy readings
• 1 Cycle - Fast Update readings
• Customizable high-speed readings -
update rate from 2 to 20 cycles RMS
Control Power Requirements:
• D2 Option: (96 - 276) V @ 50/60
Hz or DC
• D Option: (18-60) V DC
• Burden: 20 VA max w/o I/O or display;
40 VA max with I/O and display
Communication:
• Baud rate up to 115200 bps
• Programmable parity and stop bits
• Serial Communication protocols:
Modbus ASCII/RTU, DNP3 Level 2
• Ethernet: Modbus TCP, DNP3 Level 2,
SNTP, SMTP, HTTP, and HTTPS
• RJ45 Ethernet port 10/100BaseT
• Fiber Optic port 100Base FX
• 4 RS485 ports
• RS232 port (shared)
• RS485 Serial ports have 18 V DC
output for I/O
• Optional P40N+ display offers USB
Type B communication
Shipping:
• Total shipping weight:
approx. 5 lbs (2.2 kgs)
• Shipping container dimensions: 14" x
10" x 6" (35.6cm x 25.4cm x 15.2cm)
• Displays and I/O modules ship in
separate containers.
Compliance:
• ANSI C12.20 - 2015 0.1 Accuracy
Class
• IEC 62053-22 Accuracy, 0.2S
• IEC 62053-23 Ed. 1, Class 2
• CISPR 11 2009, Class A, FCC Part 15
Subparts A and B 2018*
• IEC/EN 61000-3-2 Class A 2014
(Harmonic Current Emissions)*
• IEC/EN 61000-3-3 2013 (Voltage
Fluctuations and Flicker)*
• ICES-001 2006*
• CE (EN/IEC 61000-6-2 & EN/IEC
61000-6-4 & EN/IEC 61236-1) EMC
General requirements
• IEC 61000-4-2 Ed. 2 (Electro-
static Discharge)*
• IEC 61000-4-3 Ed. 3.2 (Radi-
ated EM Immunity)*
• IEC 61000-4-5 Ed. 3 2014
(Surge Immunity)*
• IEC 61000-4-6 Ed. 4 2013
(Conducted Immunity)*
• IEC 61000-4-8 Ed. 2 2009
(Magnetic Immunity)*
• IEC 61000-4-11 Ed. 2 2004
(Voltage Variations Immunity)*
• IEC 61000-4-29 Ed. 1 2000
(Voltage Dips and Interrup-
tions)*
• IEC 61000-4-30 Class A Ed. 3 (Power
quality measurement methods) (PSL
Labs Certified)*
• IEC 61000-2-4 (Compatibility
Levels)*
• IEC 62586-2 Ed. 2 2013 (PQ
Measurement in Power Supply
Systems)*
• IEC 61000-4-7 General guide
on Harmonics and Interhar-
monic Measurements and
Instrumentation*
• IEC 61000-4-15 Flicker
Measurements*
• IEEE 519 Recommended Practices and
Requirements for Harmonic Control in
Electrical Power Systems
• EU Directive 2011/65/EU (RoHS 3
Directive)
• REACH Compliant
• Certified to UL/IEC 61010-1, UL/IEC
61010-2-030, CSA C22.2 No.61010-1,
UL File: E250818
External I/O Modules:
• 1mAON4: 4 Analog Outputs, 0±1 mA
• 1mAON8: 8 Analog Outputs, 0±1 mA
• 20mAON4: 4 Analog Outputs, 4-20 mA
• 20mAON8: 8 Analog Outputs, 4-20 mA
• 8AI1: 8 Analog Inputs, 0±1 mA
• 8AI2: 8 Analog Inputs, 0±20 mA
• 8AI3: 8 Analog Inputs, 0±5 VDC
• 8AI4: 8 Analog Inputs, 0±10 VDC
• 4RO1: 4 Relay Outputs
• 4PO1: 4 Solid State Pulse Outputs
• 8DI1: 8 Digital Status Inputs
• PSIO: Power Supply for up to 4
additional I/O modules
• MBIO: I/O mounting bracket (must be
ordered with external I/O module)
Note: Please see the Nexus®1450 Meter
Installation and Operation Manual for compre-
hensive specifications.
*Third party lab tested.
Accessories
Software
COMPQA5P1Y CommunicatorPQA®5.0 Software for
Windows Single-Computer License (One
Year)
ENERGYPQA-
1Year
Cloud-based Energy Management Solution
Displays
P40N+
P41N+
P43N+
P70N
SMKP70N
Multifunction LED Display/Master
Amp Display Slave
Watt/VAR/PF Display Slave
Color Touchscreen LCD Display
ANSI Mounting Kit for the P70N Display
I/O Modules
1mAON4
1mAON8
20mAON4
20mAON8
8AI1
8AI2
8AI3
8AI4
4RO1
4PO1
8DI1
PSIO
*MBIO
E171103
4 Analog Outputs, 0±1 mA
8 Analog Outputs, 0±1 mA
4 Analog Outputs, 4-20 mA
8 Analog Outputs, 4-20 mA
8 Analog Inputs, 0±1 mA
8 Analog Inputs, 0±20 mA
8 Analog Inputs, 0±5 V DC
8 Analog Inputs, 0±10 V DC
4 Relay Outputs
4 Solid State Pulse Outputs
8 Digital Status Inputs
Power Supply for Additional I/O Modules
I/O Mounting Bracket
DIN Rail Mount Kit for Nexus®1450 meter
*Must be ordered with an external I/O module.
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Nexus®1450
web page: