Eaton PXM4051A1BB Multifunction Power Meter
The Eaton PXM4051A1BB is a state‑of‑the‑art digital power meter from the PXM4000 series, engineered for precision monitoring of electrical networks. It offers true RMS measurements for all three phases plus neutral, with an accuracy class of 0.2S for active energy (IEC 62053‑22) and 0.5 for reactive energy. The meter is housed in a standard 96x96 mm DIN enclosure with a high‑resolution graphical display, making it suitable for panel mounting in switchboards and control rooms.
Key Features
Three‑phase measurement (3‑phase 4‑wire, 3‑phase 3‑wire, etc.)
Measurement of V, A, Hz, W, var, VA, PF, harmonics (up to 63rd), THD
Dual Ethernet ports with integrated switch for daisy‑chaining (Modbus TCP)
Two digital inputs and two digital outputs (configurable)
Large backlit LCD with multi‑language support
Data logging: up to 16 MB internal memory
Optional protocols: PROFINET, IEC 61850 (via add‑on)
Technical Specifications
Input voltage (direct): up to 480 VAC (L‑N) / 830 VAC (L‑L)
Input current: 1 A or 5 A (CT secondary) – programmable
Frequency range: 45‑65 Hz
Auxiliary power supply: 100‑240 VAC/DC, 50/60 Hz
Communication: 2 x Ethernet (Modbus TCP), 1 x RS‑485 (Modbus RTU)
Accuracy: Voltage/current ±0.1%, active energy class 0.2S
Operating temperature: -10 °C to +55 °C
Dimensions: 96 x 96 x 75 mm (cutout 92 x 92 mm)
Power Quality and Harmonics
The PXM4051A1BB continuously monitors power quality parameters including voltage sags/swells, interruptions, transients, and waveform capture. It performs harmonic analysis up to the 63rd order, displaying individual harmonic magnitudes and total harmonic distortion (THD) for voltage and current. These features help identify issues such as resonance or excessive harmonics that can lead to equipment overheating and failure.
Applications
Main incoming and feeder monitoring in industrial plants
Substation automation and utility metering
Data center power monitoring (PDU level)
Renewable energy systems (solar, wind) integration
Energy management and ISO 50001 compliance
User Interface and Configuration
The intuitive front panel allows users to scroll through measurement screens, set thresholds for alarms, and configure communication parameters without additional software. For advanced setup, Eaton’s Power Xpert Software provides a centralized platform to manage multiple meters, visualize trends, and generate reports.
With its robust construction, high accuracy, and extensive communication options, the Eaton PXM4051A1BB is the ideal choice for facilities seeking to optimize energy usage and ensure power system reliability.
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