EIG Nexus 1272 Utility Billing Meter with Advanced Power Quality

Offering the revolutionary performance and functionality of the Nexus 1252 in a socket based revenue meter. The new Nexus 1272 combines EIG's latest performance enhancing technology into an affordable socket based meter that meets and exceeds the needs of virtually all utility or industrial metering and analysis applications. This unit specifically meets the sophisticated standards required by utility companies and deregulated power providers for advanced revenue metering, control and power quality.

Standard features in the 1272 include a fully adjustable graphical backlit LCD display (easily read in all lighting conditions), compact low profile design, unrivaled accuracy measurements, multiple communication protocols, advanced power quality recording, waveform recording and user definable control options previously unattainable.

• Highly Advanced Revenue Metering
• EN 50160 Flicker and Power Quality Compliance Monitoring
• Interharmonic Analysis
• DNP 3.0 Level 2 Plus Protocol
• Enhanced Log Downloading - 3x faster
• Customized Modbus Mappings
• Proactive Power Quality & System Reliability Indices
• Programmable Load Control & Advanced I/O Capabilities
• Ethernet / Modem Combo Card

APPLICATIONS:

Metering for Critical Customers

For your customers concerned with electrical costs, put their minds at rest with 0.08% watt/hour accuracy, historical data logging, load profiling for load management, power quality event recording and analysis tools.

Load Curtailment/Energy Savings

The Nexus 1272 utilizes fixed, sliding, thermal and predictive demand integration intervals allowing for improved load management. PLC functionality allows for load curtailment applications based on programmable logical configurations.

Power Quality Sensitive Applications

Use Nexus to capture high-speed waveforms and identify causes for transients with extraordinary waveform recording capability. Identify, analyze and determine the severity of disturbances. Get answers quickly with the artificial intelligence tools of AiReports PQ Reporting and Diagnostic Software.

Generation Plants

• Multiple Protocol Communications such as Modbus and DNP 3.0
• 0.06% Accuracy Exceeds Revenue Metering Specifications
• MV90 Compatibility
• Pulse Aggregation & Accumulation allowing for Monitoring & Totaling Electrical Usage & Values such as Water and Gas Usage

Substation Monitoring

The Nexus 1272 with its standard features is the ideal substation-metering device measuring every aspect of power and providing real time revenue quantities. This data can be monitored locally or remotely via direct serial communication, optional onboard Ethernet or onboard modem.

Full Review

Input Current
3 or 4 Current Inputs Depending on Form (IA, IB, IC, and IN)
CT Rated 0-20 Amps Class 20
CT Rated 0-2 Amps Class 2
Transformer Rated
Continuous 120% of Meter Class
Overload 500% for 1 Second, Non Recurring

Input Voltage
0 - 360V Line to Neutral
0 - 660V Line to Line

Burden (Sense Inputs)
Voltage Inputs: 0.33VA@576V
Current Inputs: 0.0125VA@25A

Isolation
All Inputs and Outputs Isolated to 2500 Volts
Com Po rts Isolated From Each Other to 1000 Vo l t s

Sensing
Accu-Measure® Technology
16 bit A/D Inputs
True RMS
8 Channel Sample & Hold

Memory
All Meter Setup Parameters, Measurements & Logs Contained in Nonvolatile RAM

Standard Communications
LCD Display
IR Port
Two RS-485 Serial Ports
Modbus RTU, Modbus ASCII, DNP 3.0
Data Speeds of up to 115k bps
Eight High-Speed Input Channels

Optional Communications
56K Modem with Dial-Out Capabilities
Internal 10/100Base T - Total Web Solutions
Modem/Ethernet Combo Card
Modbus TCP and DNP LAN/WAN

Internal 8ch Digital Inputs
Type: Self Excited, for Dry Contacts Only
Internal Wetting Voltage: 12V DC Typical

Internal 4ch Solid State Outputs (kyz)
Type: Form A or C
On Resistance: 23-35
Peak Voltage: 350V DC
Continuous Load Current: 120mA
Peak Load Current: 350mA (10ms)
Off State Leakage Current @350V DC: 1: µA
Opto Isolation: 3750V rms (60Hz, 1 min.)

Clock Timing
Internal Clock Crystal - Accuracy Better than 1 Minute per Month
IRIG-B Input for Synchronizing to External GPS Clock Signal - Accuracy Better than 1 msec per Month
Line Sync -Accuracy Better than 1 Second per Month

Environmental
Operating Temperature: -40°C to +85°C
Display Temperature: -20°C to +60°C
Raintight Lexan Cover (Socket)

Aux Power Supply Option

• Standard (OPTION S) 102 to 550 Volts AC 50/60Hz. Auto-Ranging 3 Phase. 12VA Worst Case Total Burden. Meter Power Provided by any of the 3 Phase Voltage Sources Being Monitored. Blade Powered.

• Standard External (OPTION SE) 102 to 275 Volts AC/DC 50/60 Hz. Max Power Consumption: 16 VA@276VAC. Separate Power Cord.

• Low Voltage (OPTION LV) 69V AC 20%± – Low Voltage Supply for 69 Volt L-N Applications

• Low Voltage External (OPTION DE) 18 to 60 Volts DC – External Low Voltage Supply for DC Powered Applications

NOTE: Switchboard Meter is always separately powered.

Security
Hardware Lock Secures Meter Settings
Two 10-Character Passwords
One Password Controls Access to Read Meter Digitally
Separate Password Controls Access to Program Meter

Shipping
Weight: Socket: 8 Lbs Switchboard: 14 Lbs
Dimensions: Socket: 10" x 11" x13" Switchboard: 16" x14" x 11"

Compliance
Compliance Standards: ANSIC12.20 ANSI-Certified IEC 60687 — Certified
Approvals: Europe: IIEC 60687 — KEMA Certified
ANSI/IEEE C37.90.1Surge Withstand
ANSI C62.41 Surge Immunity
IEC 1000-4-2 ESD
IEC 1000-4-3 Radiated Immunity
IEC 1000-4-4 Fast Transient
IEC 1000-4-5 Surge Immunity
IEC 1000-4-6 Conducted Immunity
IEC 60068-2-6 Vibration (S i n u s o d i a l )
IEC 60068-2-27 Shock Test
IEC 695-2-1 Resistance to Heat & Fire
IEC 529 Dust & Water
IEC 68-2-1 Cold Test
IEC 68-2-2 Dry Heat
IEC 68-2-30 Damp Heat

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