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WattNode® Plus for LonWorks® kilowatt hour kWh energy and power meter

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.
Part Number: WNC LonWorks
*
$696.00 ex GST
[$765.60 inc GST]

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

ModelVAC Phase
to Neutral
VAC Phase
to Phase
Electrical
Service Types
Neutral
Required
WNC-3Y-400-FT10 230 400 1 Phase 2 Wire 230V with neutral
3 Phase 4 Wire 230V/400V
Yes
WNC-3D-400-FT10 See Below 400 3-Phase 3-Wire Delta 400V (No neutral)
3-Phase 4-Wire Wye 230/400V
 
  • Delta models, WNB-3D-400-P, work either with or without a neutral connection, but require a line-to-line voltage connection for operating power.

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.


Data Logging

If you need data logging, see WattNode Logger for LonWorks

Option CT

  • Option CT=xxx - Pre-assign xxx as the nciCtAmps value.
    This can be field configured or overridden using the nciCtAmps network variable.

Option PT

Option PT improves support for potential transformers (PTs), making it easier to use WattNode for LonWorks meters with medium voltage services. Specifically, Option PT adds a configuration property UCPTptRatio which configures the ratio of the external PT, allowing the meter to automatically scale the voltage, power, and energy readings.

 

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

ModelVAC Phase
to Neutral
VAC Phase
to Phase
Electrical
Service Types
Neutral
Required
WNC-3Y-400-FT10 230 400 1 Phase 2 Wire 230V with neutral
3 Phase 4 Wire 230V/400V
Yes
WNC-3D-400-FT10 See Below 400 3-Phase 3-Wire Delta 400V (No neutral)
3-Phase 4-Wire Wye 230/400V
 
  • Delta models, WNB-3D-400-P, work either with or without a neutral connection, but require a line-to-line voltage connection for operating power.

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.


Data Logging

If you need data logging, see WattNode Logger for LonWorks

Option CT

  • Option CT=xxx - Pre-assign xxx as the nciCtAmps value.
    This can be field configured or overridden using the nciCtAmps network variable.

Option PT

Option PT improves support for potential transformers (PTs), making it easier to use WattNode for LonWorks meters with medium voltage services. Specifically, Option PT adds a configuration property UCPTptRatio which configures the ratio of the external PT, allowing the meter to automatically scale the voltage, power, and energy readings.

 

Electrical

  • Line powered
  • UL Listed
  • CE Mark
  • FCC Class A
  • Operating Voltage Range: –20% to +15% of the nominal rated voltage
  • Power Line Frequency: 50 or 60 Hz
  • CT Input: 0.333 Vac nominal, 0 to 0.5 Vac operating, 3 Vac maximum

Measurement Configurations

  • Single phase: two or three wire
  • Three phase, four wire wye
  • Three phase: three wire delta
  • Three phase: four wire delta

Communication

  • Protocol: Echelon’s® LonTalk® (ANSI/CEA-709.1-B-2002, EN 14908, GB/Z 20177.1-2006)
  • Transceiver: Echelon TP/FT-10
  • Bit Rate: 78 kbps
  • Maximum Nodes: 64 per subnet
  • Maximum Distance: 500–2700 meters
  • Maximum Stub Length:
    • Free Topology: Unlimited
    • Bus Topology: 3 meters

Accuracy

  • 0.5% nominal accuracy (see manual for details)

Regulatory

  • FCC Class B, EN 55022 Class B
  • UL and cUL Listed (UL 61010-1)
  • CE Mark and RoHS
  • Immunity: EN 61326: 2002 (Industrial Locations)

Environmental

  • Operating Temperature: –30° to 55°C
  • Humidity: Up to 90% RH (non-condensing

Mechanical

WattNode-Case-Dimensions.png

Case Dimensions (Click on the image for a larger view.)

  • Enclosure:
    • High impact, ABS plastic
    • Flame Resistance Rating: 94V-0, IEC FV-0
    • Size: 6.1 × 3.35 × 1.5 in. (155 × 85 × 38.1 mm)
  • Weight: 10.4 oz (295 g)
  • Connectors: Euroblock style pluggable screw terminal blocks
  • Green: 22 to 12 AWG (1.0 to 3.2 mm), 600 V
  • Black: 22 to 12 AWG (1.0 to 3.2 mm), 300 V
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