The WattNode Modbus is a kilowatt hour kWh energy and power meter
that communicates on a EIA RS-485 network, measures 1, 2, or 3 phases
with voltages from 120 to 600 volts Vac and currents from 5 to 6,000
amps in delta (phase to phase) and wye (phase to neutral)
Our diagnostic LEDs provide a per-phase indication of power (green
flashing) and negative power (red flashing) to help troubleshoot
connection problems, like swapped CTs, or excessive line voltage. The
WattNode Modbus meter also has a red/yellow/green communication LED to
indicate traffic, configuration problems, bus contention and other
conditions. See the manual for full descriptions.
- Supports floating point and integer registers
- True RMS Power - Watts (Phase A, B, C, and sum of all phases)
- Reactive Power - VARs (Phase A, B, C, and sum of all phases)
- Power Factor (Phase A, B, C, and sum of all phases)
- True RMS Energy - Watthours WH kWh (Phase A, B, C, and sum of all phases)
- Reactive Energy - VAR-hours (Phase A, B, C)
- AC Line Frequency
- RMS Voltage (Phase A, B, C)
- RMS Current (Phase A, B, C)
- Peak Demand
- Small form factor for easy installation inside most electrical panels, see a sample installation diagram
- Pluggable screw terminals for easy wiring
- 0.5% accuracy nominal (see manual for details)
- True RMS power even with leading or lagging power factor and chopped or distorted waveforms
- Measure variable speed drive pumps and motors
- Uses safe CT's (current transformers), producing 0.333 Vac at rated current.
- Split core CTs for quick installation
- Solid core CTs are less expensive and prevent tampering
- Bus bar CTs for high current applications (standard and custom sizes)
- UL, cUL Listed - Designed and tested for safety and use throughout North America.
- Assembled in USA, qualified under the Buy American provision in the American Recovery and Reinvestment Act of 2009 (ARRA).
- Five year warranty
Warning: Hazardous Voltages - Only qualified personnel or licensed electricians should install the WattNode meter and current transformers.