Eaton IQ DP-4000 Digital Power Monitor (66D2040G03)

The Eaton IQ DP-4000, referenced by order code 66D2040G03, is a sophisticated power monitoring device that provides real‑time data on electrical consumption and power quality. It is part of Eaton’s IQ family of meters, known for their reliability and accuracy in demanding environments. The DP‑4000 features a high‑visibility graphical LCD that can display measurements numerically or as waveforms, phasors, and harmonic bar graphs.

Key Features

• True RMS three‑phase measurement (Wye, Delta, single‑phase)

• Voltage, current, power, energy, frequency, power factor

• Harmonic distortion (THD) up to 31st harmonic

• Demand and peak demand recording with time stamp

• Min/max logging for trend analysis

• Two digital inputs for status monitoring (e.g., breaker status)

• Two digital outputs for alarm or pulse output (kWh)

• RS‑485 communication port (Modbus RTU) standard

• Optional Ethernet module for Modbus TCP

Technical Specifications

Power Quality Analysis

The IQ DP‑4000 continuously monitors power quality by capturing voltage and current waveforms during disturbances. It logs events such as sags, swells, and interruptions with cause identification. Harmonic measurements help diagnose issues caused by non‑linear loads like VFDs and LED lighting. The meter can also display vector diagrams to verify correct transformer connections.

Applications

• Submetering in commercial buildings (tenants, departments)

• Industrial plant load profiling and demand control

• Power quality surveys and troubleshooting

• Generator and UPS output monitoring

• Energy management systems (EMS) integration

Configuration and Data Access

Setup is performed via the front panel keypad or using Eaton’s Power Xpert Software. The device stores historical data in non‑volatile memory, which can be retrieved over Modbus. The graphical display allows on‑site viewing of trend graphs and event logs without a computer. The 66D2040G03 variant includes standard accessories such as mounting brackets and terminal covers.

With its comprehensive measurement capabilities and robust design, the Eaton IQ DP‑4000 helps facility managers reduce energy costs, improve power reliability, and meet sustainability goals.