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WattNode - Model Pulse -AC Watt Hour Transducer
The WattNode Pulse meter is a true RMS AC watt-hour transducer with pulse output (solid state relay closure) proportional to kWh consumed or produced. The WattNode Pulse meter provides 0.5% accurate kWh measurements at low cost to meet your needs for sub-metering, net-metering, energy management, and performance contracting applications. The WattNode pulse 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 meter and CT combination to measure all types of electrical services.
Diagnostic LEDs
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. 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 theOptions tab.
Key Features and Benefits
- Pulse output:Compatible with energy management systems and data loggers.
- Nominal 0.5% 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 inverters and variable frequency drives.
- Safe CT`s (current transformers), output 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
- 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 display module remotely displays energy in Wh, kWh, or MWh; or power in W or kW
- Small form factorfor easy installation inside most electrical panels, see a sample installation diagram
- Assembled in USA, qualified under the Buy American provision in the American Recovery and Reinvestment Act of 2009 (ARRA).
- Five year warranty
Pulse Output
- Opto-isolated, 5000 volt rated solid state relay (dry contact rated 60 Vdc at 5 mA)
- Full-scale bidirectional pulse outputs standard 4.0 pulses per second resolution
- Optional pulse frequencies, pulse widths, watt-hours per pulse and other output configurations available (see options)
Accuracy
- 0.5% nominal (see manual for details)
- 0.5% nominal (see manual for details)
- Meets accuracy requirements of the ANSI C12.1 standard when used with CCS CTs rated for IEEE C57.13 class 0.6 accuracy (see Revenue Grade CTs).
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
Regulatory
- FCC Class B, EN 55022 Class B
- UL and cUL Listed (UL 61010-1), file number E312220
- CE Mark and RoHS
- 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
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