Doc# E107706 2 - 1
2: Meter Overview
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
2: Meter Overview
This chapter provides basic information on the Nexus® 1250/1252 meter.
2.1: The Nexus
®
System
Electro Industries’ Nexus® 1250/1252 combines high-end revenue metering with
sophisticated power quality analysis. Its advanced monitoring capabilities provide
detailed and precise pictures of any metered point within a distribution network. The
P40N+, P41N+ and P43N+ displays are detailed in Chapter 6. Extensive I/O capability
is available in conjunction with all metering functions. The optional Communicator
EXT
TM
software allows a user to poll and gather data from multiple Nexus® meters
installed at local or remote locations (see the Communicator EXT
TM
4.0 and MeterMan-
ager EXT Software User Manual for details). On board mass memory enables the
meter to retrieve and store multiple logs. The Nexus® meter with Internal Modem (or
Network) Option connects to a PC via standard phone line (or Modbus TCP/IP) and a
daisy chain of Nexus® meters via an RS485 connection. See Chapters 10 and 11 for
details.
Nexus® 1250/1252 Revenue Metering
• Delivers laboratory-grade 0.04% Watt-hour accuracy (at full load Unity PF) in a
field-mounted device
• Auto-calibrates when there is a temperature change of about 2 degrees Celsius
• Meets all ANSI C12.20 and IEC 62053-22 accuracy specifications
• Adjusts for transformer and line losses, using user-defined compensation factors
• Automatically logs time-of-use for up to eight programmable tariff registers
• Counts pulses and aggregates different loads
Nexus® 1250/1252 Power Quality Monitoring
• Records up to 512 samples per cycle on an event
• Records sub-cycle transients on voltage or current readings
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