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CAUTION! Installation of the Nexus® 1252 meter must be performed only by qualified personnel who
follow standard safety precautions during all procedures. Those personnel should have appropriate
training and experience with high voltage devices. Appropriate safety gloves, safety glasses and pro-
tective clothing are recommended.
During normal operation of the Nexus® meter, dangerous voltages flow through many parts of the unit, includ-
ing: Terminals and any connected CTs (Current Transformers) and PTs (Potential Transformers), all I/O Modules
and their circuits. All Primary and Secondary circuits can, at times, produce lethal voltages and currents. Avoid
contact with any current-carrying surfaces.
Do not use the meter or any I/O device for primary protection or in an energy-limiting capacity. The meter can
only be used as secondary protection.
IMPORTANT! Refer to your meter's Installation and Operation Manual for additional safety warnings before
performing installation, wiring, or maintenance of your meter. See the link to the manual, below.
NOTE: This Quickstart Guide gives basic installation, wiring, and programming instructions.For additional meter
operation and programming information, refer to your meter's Installation and Operation Manual and the Communi-
cator PQA
, MeterManagerPQA
TM
User Manual:
https://www.electroind.com/products/nexus-1252-energy-and-power-quality-meter/
From the webpage, click Technical Documents>User Manual.
Software Manual:
https://www.electroind.com/products/communicatorpqa-software-application-5/
From the webpage, click Technical Documents>User Manual.
CommunicatorPQA
TM
https://www.electroind.com/products/communicatorpqa-software-application-5/
From the webpage, click Download ComPQA Pro. To get a Professional license for the software, email sales@elec-
troind.com or call 516-334-0870.
All EIG's metering and software products' literature can be accessed from:
https://www.electroind.com/all-products/
For software and metering integration, EIG's Technical Support Engineers are available on an hourly or daily basis to
help with typical commissioning assistance, which includes:
•
Verifying meter installation and wiring.
•
Verifying proper system integration.
•
Working with 3rd parties to ensure cross compatibility.
•
Advising users on best practices for optimal implementation.
You can reach Technical Support from 8 a.m. to 8 p.m. EST, Monday-Friday, at 516-334-0870.
Electro Industries/GaugeTech
Powered by Innovation™
Nexus® 1252 Meter Quickstart Guide
, and EnergyPQA.com
TM
Setup Software:
Software User Manual on EIG's website:
TM
™
#
Doc
E107754
Nexus® 1252 Meter Quickstart
V.1.03
QS - 1
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Summary of Contents for Nexus 1252
- Page 1 Appropriate safety gloves, safety glasses and pro- tective clothing are recommended. During normal operation of the Nexus® meter, dangerous voltages flow through many parts of the unit, includ- ing: Terminals and any connected CTs (Current Transformers) and PTs (Potential Transformers), all I/O Modules and their circuits.
- Page 2 1. Secure the four mounting studs to the back of the panel with the supplied nuts. 2. Insert one end of the supplied RS485 cable into Port 3 of the Nexus® meter (or to another Port set to a Baud Rate of 9600 - see page QS-5 for instructions).
- Page 3 ElectroIndustries/GaugeTech www.electroind.com Electrical Installation: Following are some of the possible wiring configurations. See the Nexus® 1250/1252 Meter Installation and Operation Manual for additional configurations (see page QS-1). 4-wire, 3 element WYE with 3 PTs and 4 CTs 4-wire, 3 element WYE with Direct Voltage and 4 CTs Electro Industries/GaugeTech ™...
- Page 4 Nexus® 1252 Meter Quickstart 3-Wire 2 Elements Delta with 2 PTS and 2 CTs 3-Wire 2 Element Open Delta with 3 CTs Electro Industries/GaugeTech ™ E107754 V.1.03 QS - 4 Powered by Innovation™...
- Page 5 4. The meter’s Device Profile screen opens, giving you access to the programmable settings for the meter. NOTE: A few basic settings are explained here. Refer to the Nexus® 1250/1252 Meter Installation and Opera- tion Manual and the CommunicatorPQA , MeterManagerPQA , and EnergyPQA.com...
- Page 6 1-4), the Network Option and the Internal Modem Option. You can change the settings, if necessary, for your system. You can use one of the Nexus® External Displays to learn the current baud rate, address and communication protocol of each meter port - see Section 6.5 in the meter’s User Manual...
- Page 7 Nexus® 1252 Meter Quickstart a. For the serial ports, the settings are: - Address (must be unique to the device) - Baud Rate (must match that of any device connected to this port) - Data Bits (for Modbus RTU and ASCII, leave as the default - 8)
- Page 8 Device Profile screen, to send the new settings to the meter. The meter will reboot and then you can reconnect to it. If you changed the IP address, make sure to use the new address in the Network Connect screen. Nexus® is a registered trademark of Electro Industries/GaugeTech. CommunicatorPQA , MeterManagerPQA , and Ener- gyPQA.com...
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