描述
The NEXUS1250-2E-120-D2-60HZ-GETC is an Electro Industries/GaugeTech (EIG) NEXUS® 1250 advanced performance power meter and power quality recorder configured for 60 Hz North American power systems with D2 control power supply (120V AC/DC – 230V AC) and integrated Ethernet communication (GETC option) . The NEXUS 1250 delivers revenue-grade energy metering accuracy combined with advanced power quality recording capabilities, making it one of the most sophisticated power monitoring instruments in its class . Featuring EIG’s proprietary Accu-Measure™ and Auto-Calibrating technologies, it provides highly accurate measurement of voltage, current, power, energy, harmonics (up to 255th), and transient events. With 4 isolated high-speed serial communication ports, built-in 10/100M Ethernet (INP200), support for Modbus RTU/ASCII/TCP and DNP 3.0 protocols , and a graphical touch-screen LCD display option, the NEXUS 1250 is the ideal solution for utilities, industrial facilities, and commercial buildings requiring comprehensive power monitoring and power quality analysis.
Key Features
- Advanced power meter & power quality recorder — revenue-grade metering + PQ analysis in one device
- Accu-Measure™ & Auto-Calibrating technology — maintains high accuracy over time without manual recalibration
- 60 Hz configuration — optimized for North American power systems
- D2 control power: 120V AC/DC (-20%) to 230V AC (+20%)
- Integrated Ethernet (GETC): 10/100M Rapid Response™ Ethernet card with Modbus TCP & DNP 3.0 support
- 4 isolated high-speed serial ports — simultaneous Modbus RTU/ASCII and DNP 3.0 communications
- Harmonic analysis up to 255th — comprehensive waveform and harmonic recording
- Transient & fault recording — event-triggered waveform capture, ITIC/CBEMA logs
- Time-of-Use (TOU) metering — transformer & line loss compensation, TOU calendar
- Graphical touch-screen LCD display (P60N) or LED display (P40N/P41N/P43N) options
- MV90 compatible — utility-grade data exchange
- UL Measurement Category III, rated for 2000 meters altitude
- Wide operating temperature: -40°C to +70°C
- Country of Origin: USA (Westbury, New York)
Technical Specifications
Parameter | Specification |
|---|---|
Brand | Electro Industries/GaugeTech (EIG) |
Model | NEXUS 1250 (Config: 2E-120-D2-60HZ-GETC) |
Product Type | Advanced power meter & power quality recorder |
Control Power (D2) | 120V AC/DC (-20%) to 230V AC (+20%) |
Frequency | 60 Hz |
Voltage Input Range | 150V phase-to-neutral standard (for use with PTs); 300V phase-to-neutral with Option -G |
Current Input | 10A maximum (programmable to any CT ratio); 1A & 0.25A by special order |
Fault Current Recording | Up to 60A peak secondary based on 5A full scale |
Voltage Input Withstand | 300V phase-to-phase standard; 600V phase-to-phase with Option G |
Current Withstand | Continuous 200% rated; surge 10× max input for 3 seconds; meets ANSI C37.90.1 |
Voltage Burden | 0.05 VA @ 120V rms |
Current Burden | 0.002 VA @ 5A rms |
Isolation | 2500 V DC, 60 Hz RMS; all I/O isolated 2500V |
Sensing Method | RMS |
Update Time | 90 msec |
Frequency Range | Fundamental 20–65 Hz; up to 255th harmonic measuring capability |
Communication Ports | 4 × isolated RS-485/RS-232; 1 × Ethernet (10/100M, INP200) |
Communication Protocols | Modbus RTU/ASCII/TCP, DNP 3.0 Level 1, MV90 |
Data Logging | 512K / 2Meg / 4Meg memory options; historical trends, limit logs, event waveforms |
Display Options | P40N/P41N/P43N LED; P60N color touch-screen LCD |
Dimensions (H×W×L) | 3.4 × 7.3 × 10.5 in / 8.6 × 18.5 × 26.6 cm |
Maximum Power Consumption | 40 W (with optional modules and display) |
Nominal Power Consumption | ~12 W (without optional modules and display) |
Operating Temperature | -40°C to +70°C |
Storage Temperature | -45°C to +85°C |
Relative Humidity | 5–95% non-condensing |
Protection Rating | UL Measurement Category III; rated altitude 2000 meters |
Connection Screws’ Torque | 6 to 9 in-lb max. (0.68 to 1 Nm max.) |
Certifications | UL Listed (E107706); ANSI C37.90.1 surge withstand |
Country of Origin | USA |
Warranty & After-Sales
- Factory new units (NOS): 12 months warranty
- Refurbished units: 3-6 months warranty
- Bench test: 120V AC control power-up → self-test passes → voltage/current input calibration verification → 4 serial ports loopback test → Ethernet port ping & Modbus TCP communication test → DNP 3.0 protocol test → harmonic measurement verification → display (P40N/P60N) functional test → -40°C and +70°C operational test → 512K/2Meg memory read/write test
- Technical support:
- Model verification — confirming this exact configuration (2E-120-D2-60HZ-GETC) matches your application: 60 Hz system, 120V control power, Ethernet requirement
- CT/PT ratio configuration — programming current transformer ratios (5A/1A/0.25A) and potential transformer ratios (e.g., 135:1 as referenced in similar configurations)
- Communication setup — Modbus TCP/IP, Modbus RTU/ASCII, DNP 3.0 Level 1 configuration for SCADA/BMS integration
- Ethernet (INP200) configuration — IP address setup, Modbus TCP mapping, DNP 3.0 over Ethernet
- TOU & loss compensation — Time-of-Use calendar setup, transformer & line loss compensation programming
- Power quality analysis — harmonic, flicker, EN50160 polling screen configuration (note: EN50160 full analysis requires NEXUS 1252 with V-Switch™ key 2.E; NEXUS 1250 supports basic PQ recording)
- Replacement guidance — for new projects, we recommend the NEXUS 1252 (active product) or NEXUS 1450/1500+ as forward-compatible successors with enhanced features
- Optional accessories: P40N LED display, P60N touch-screen LCD display, external I/O modules (MBIO), analog transducer modules (1mAON4/20mAON4), digital relay output modules (4RO1), pulse output modules, PSIO auxiliary power supply, Rogowski coil CTs, split-core CTs
Delivery Time: 3-5 working days (standard) / Express available
⚠️ IMPORTANT — Read Before Ordering:
- The NEXUS 1250 is discontinued by EIG ; we supply genuine new-old-stock and factory-refurbished units, fully tested and warranted
- Verify your system frequency is 60 Hz — this model is configured for 60 Hz North American systems
- Verify control power is 120V AC/DC to 230V AC (D2 option) — if you need 24-48V DC, choose the D option instead
- Verify your voltage input needs: standard 150V phase-to-neutral (requires PTs for higher voltages) or specify Option -G for 300V phase-to-neutral direct connection
- Verify CT secondary: 5A standard; 1A or 0.25A available by special order
- For new installations, consider the NEXUS 1252 or NEXUS 1450 as EIG’s currently active, fully-supported successors
- Send us your system single-line diagram (voltage levels, CT/PT ratios, communication protocol) — we’ll confirm compatibility and provide a complete configuration
Why Choose Our Store
- Genuine EIG NEXUS 1250 units — direct from authorized surplus channels, no counterfeit risk
- Exact configuration match — NEXUS1250-2E-120-D2-60HZ-GETC: 60 Hz, D2 control power, Ethernet-enabled, as you specified
- Full bench testing — every unit undergoes comprehensive calibration verification and communication testing before shipment
- EIG product expertise — we support the entire NEXUS family (1250, 1252, 1450, 1500+) and can advise on migration paths
- Complete accessory supply — displays, I/O modules, CTs, communication converters for turnkey deployment
- Global supply network with competitive pricing on legacy power monitoring instruments
- Technical documentation — original EIG manuals, ordering guides, Modbus maps, DNP 3.0 point lists
Applications
- Utility substation metering — revenue-grade energy measurement with TOU, transformer & line loss compensation
- Generator protection panels — as referenced in similar NEXUS 1250 configurations for gas turbine generator sources
- Industrial power monitoring — comprehensive electrical parameter measurement, harmonic analysis, power quality recording
- Commercial building submetering — tenant billing, load profiling, energy cost allocation
- SCADA & DCS integration — Modbus TCP/DNP 3.0 communications to central monitoring systems
- Power quality studies — transient capture, waveform recording, ITIC/CBEMA analysis, harmonic surveys
- Renewable energy interconnection — PV and wind inverter output metering, grid compliance monitoring
- Critical facility monitoring — hospitals, data centers, semiconductor fabs requiring high-accuracy power monitoring
- Spare parts / retrofit — direct replacement for existing NEXUS 1250 installations in 60 Hz systems
- Cogeneration & CHP plants — buy/sell energy metering with utility interconnection
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