AC Power Measurement, for LonWorks® Networks, Reactive Power, VARs, Power Factor, Individual Phase Measurements

The WattNode Plus is a kilowatt hour kWh energy meter that communicates on a LonWorks network and measures 1, 2, or 3 phases with voltages from 120 to 600 Vac and 5 to 6,000 amps in delta (phase to phase) and wye (phase to neutral) configurations. For built-in data logging, see the WattNode Logger for LonWorks.

Measurements

• 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: PF (Phase A, B, C, all phases)
• True RMS Energy: Kilo-Watthours kWh (Phase A, B, C, and sum of all phases)
• Reactive Energy: kVAR-hours (All Phases)
• AC Frequency
• RMS Voltage: (Phase A, B, C)
• Computed RMS Current: (Phase A, B, C)
• Demand
• Peak Demand

Features

• Supports LonWorks TP/FT-10 free topology twisted-pair network using Echelon's^® LonTalk^® (ANSI/CEA-709.1-B-2002) network protocol.
• LonMark 3.4 Certified
• Small form factor for easy installation inside most electrical panels, see a sample installation diagram.
• Pluggable screw terminals for easy wiring
• 0.5% nominal accuracy (see manual for details)
• True RMS power even with leading or lagging power factor and chopped or distorted waveforms
• Monitors variable speed drives, pumps, and motors
• 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
  • Custom and standard Bus Bar sized CTs
• Assembled in USA, qualified under the Buy American provision in the American Recovery and Reinvestment Act of 2009 (ARRA).
• Five year warranty

Safety Note

Warning: Hazardous Voltages - Only qualified personnel or licensed electricians should install the WattNode meter and current transformers.

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Keywords: ANSI 709.1, ANSI/CEA 709.1, EIA 709.1