Advanced Pulse WattNode^®

The Advanced Pulse WattNode

The Advanced Pulse WattNode is a true RMS AC watt-hour transducer with pulse output (solid state relay closure) proportional to kWh consumed. The WattNode provides accurate measurement at low cost to meet your needs for sub-metering, net-metering, energy management, and performance contracting applications. The complete Pulse Output family measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations. With voltage ratings from 120 to 600 VAC and current transformer (CT) ratings from 5 to 6000 amps, there is a WattNode combination to meet your AC power measurement requirements.

 

Diagnostic LEDs

Our diagnostic LEDs provide a per-phase indication of power (green flashing), negative power (red flashing), and advanced diagnostics (yellow flashing) to help troubleshoot connection problems, like swapped CTs, or excessive line voltage. See the manual for a full description.

 

Advanced Output Capabilities are available as factory options:

• Standard output provides pulses on one terminal for positive energy and on another terminal for negative energy. This is useful with solar panels, where energy taken from the grid and energy fed to the grid can be metered separately with one meter (net metering).
• For more information on available options click the options tab.

Key Features and Benefits

• Pulse output - Compatible with energy management systems and data loggers.
• 0.5% nominal accuracy (see manual for details)
• Small size - Can be installed in existing service panels or junction boxes.
• Bidirectional metering – Net metering for PV (photovoltaic) solar and wind power generation with only one meter.
• Advanced metering design – Enables metering of variable frequency drives.
• Safe CTs - Integral burden resistor limits the output to low voltage.
• Line powered - No external supply required.
• Detachable terminal blocks - Easy to install and remove.
• UL, cUL Listed - Designed and tested for safety and use throughout North America.
• CE Mark – Can be installed throughout the EU.
• The optional LCD module remotely displays energy in WH, kWh, or MWH; or power in W or kW

• Small form factor for easy installation inside most electrical panels, see a sample installation diagram.

 

WattNode is a registered trademark of Continental Control Systems LLC.

Electrical

• Line powered
• Operating Voltage Range: -20%, +15% of nominal
• Power Line Frequency: 50 or 60 Hz
• CT Input: 0.333 VAC nominal, 3 VAC maximum

Pulse Output

• Output waveform: square-wave, 50% duty cycle
• Optoisolator (phototransistor) output handles up to 60 VDC at 1μA (microamp) to 5mA (milliamp).
• Fully isolated to withstand 5000 volts

Frequencies at Full Scale Power

• Standard (All Models): 4.00 Hz
• Custom (Standard Bidirectional Outputs): 0.01 Hz to 600 Hz
• Custom (Option P3, Option PV): 0.01 Hz to 150 Hz

Accuracy

• Accuracy: ±0.50% of reading
• Line voltage: 80% - 120% of nominal
• Power factor: 1.0
• Frequency: 48 - 62 Hz
• Ambient Temperature: 25°C
• Current: 1.5% - 100% of rated current

Regulatory

• FCC Class B, EN 55022 Class B
• UL and cUL Listed (UL 61010-1)
• CE Mark and RoHS (on WNB-3Y-400-P and WNB-3D-400-P models)
• Immunity: EN 61326: 2002 (Industrial Locations)

Environmental

• Operating Temperature: -30°C to +55°C (-22°F to 131°F)
• Humidity: 5 to 90% relative humidity (RH) up to 40°C, decreasing linearly to 50% RH at 55°C.

Mechanical  Click on the image for a larger view.

• Enclosure:
  • High impact, ABS plastic
  • Flame Resistance Rating: 94V-0, IEC FV-0
  • Size: 143mm × 85mm × 38mm (5.63" × 3.34" × 1.5")
  • Weight: 295gm (10.4oz)
• Connectors: Euroblock style pluggable terminal blocks
  • Green: 22 to 12 AWG (1.0mm - 3.2mm), 600 V
  • Black: 22 to 12 AWG (1.0mm - 3.2mm), 300 V

 

 

 

Datasheet, Manuals, and Application Notes

• Manual (PDF)
• Quick Install Guide (PDF)
• Datasheet (PDF)
• Application Notes

Options

• Option PV - (Photovoltaic) MS-10 (PDF)
• Option DPO (Dual Positive Outputs) MS-11 (PDF)
• Option P3 (3 Pulse Streams) MS-12 (PDF)

Pricing information for all models and products

Model	VAC Phase to Neutral	VAC Phase to Phase	Electrical Service Types	Neutral Required	MSRP
WNB-3Y-208-P	120	208-240	1 Phase 2 Wire 120V with neutral 1 Phase 3 Wire 120V/240V 3 Phase 4 Wire 120V/208V		$198
WNB-3Y-400-P	230	400	1 Phase 2 Wire 230V with neutral 3 Phase 4 Wire 230V/400V		$220
WNB-3Y-480-P	277	480	3 Phase 4 Wire 277V/480V		$220
WNB-3Y-600-P	347	600	3 Phase 4 Wire 347V/600V		$244
WNB-3D-240-P	N/A	208-240	1 Phase 2 Wire 208V (No neutral) 1 Phase 2 Wire 240V (No neutral) 1 Phase 3 Wire 120V/240V 3 Phase 3 Wire 208V (No neutral) 3 Phase 4 Wire 120V/208V		$244
WNB-3D-400-P	N/A	400	3 Phase 3 Wire 400V (No neutral) 3 Phase 4 Wire 230V/400V		$244
WNB-3D-480-P	N/A	400-480	3 Phase 3 Wire 480V (No neutral) 3 Phase 4 Wire 277V/480V		$244

Options P3, DPO, SSR , PV, and custom output frequencies are an additional $18.00 a unit.

Delta models, WNB-3D-240-P, WNB-3D-400-P, and WNB-3D-480-P, work either with or without neutral present.

Click the downloads tab for options manuals, manual supplements, etc.

 

Option P3

• Option P3 provides three separate pulse output streams, one pulse output channel per measurement phase, which can be used to monitor each phase of a three-phase circuit independently or to monitor three separate single-phase circuits with one WattNode.
• Example part number WNB-3Y-208-P Opt P3

Option PV

• Option PV (Photovoltaic) measures net house energy (to or from grid) and PV or wind generated energy with a single WattNode.
• Example part number WNB-3Y-208-P Opt PV

Option DPO

• Option DPO (Dual Positive Outputs) adds an extra pulse output channel for positive real energy. This allows the WattNode to be easily connected to two different devices, such as a display and a data logger.
• Example part number WNB-3Y-208-P Opt DPO

Option SSR

• Option SSR (Solid State Relays) replaces the standard optoisolators with solid state relays
• Example part number WNB-3Y-208-P Opt SSR

Option Hz

• Option Hz (Custom Frequencies) replaces the standard 4.00 Hz output
• Custom Hz (Standard Bidirectional Outputs): 0.01 Hz to 600 Hz
• Custom Hz (Option DPO, P3, Option PV): 0.01 Hz to 150 Hz
• Example part number WNB-3Y-208-P Opt 300Hz
• Example part number WNB-3Y-208-P Opt P3, 10/20/150Hz