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WattNode
Pulse Output kWh Transducer Connection Instructions
®
®
For use with HOBO
H21, H22, U30, UX90, UX120, and RX3000 series data loggers, and HOBO data nodes
Applies to these WattNode Pulse Output kWh Transducers:
Onset Part No.
Configuration / VAC
T-WNB-3Y-208
Single-phase 120 or
Wye 208-240
T-WNB-3Y-208-P
Single-phase 120 or
Wye 208-240
T-WNB-3D-240
Delta 208-240
T-WNB-3D-480
Delta (or Wye) 480
Installing transducers in an energized electrical enclosure or on any energized conductor can result in severe injury or death.
These transducers are for installation by qualified personnel only. To avoid electrical shock, do not perform any installation or
servicing of these transducers unless you are qualified to do so. Disconnect and lock-out all power sources during installation
and servicing. Please read transducer user manuals for instructions and use.
This document provides instructions on connecting the WattNode Pulse Output
kWh Transducers listed above to HOBO H21, H22, U30, UX90, UX120, and
RX3000 series data loggers and to ZW series data nodes. Note: For information
on connecting the kWh transducer to the power source and other transducer
details, refer to the WattNode documentation provided by Continental Control
Systems.
Required
• Selected WattNode Pulse Output kWh Transducer
• Appropriately rated Current Transducer(s)
• Smart Sensor-compatible HOBO data logger (H21, H22, U30, or RX3000 series) with:
o Pulse Input Adapter(s), Onset Part No: S-UCC-M00x*
®
o HOBOware
software (version 2.2 or higher for H21 or H22, 2.4 or higher for U30), or HOBOlink for
RX3000
• 22 AWG twisted pair wire (customer supplied) for UX120 series with HOBOware software, version 3.2.0 or higher
• Pulse input-compatible HOBO data node (ZW series) and HOBO data logger (UX90 series) with:
o Onset Part No: CABLE-2.5-STEREO*
o HOBOware Pro software, version 3.0 or higher for ZW series and HOBOware version 3.3 or higher for UX90
series
* For monitoring power demand as well as generated power, a second S-UCC-M00x pulse input adapter (for H21, H22, U30
or RX3000 series) or CABLE-2.5-STEREO (for pulse input-compatible ZW series) is required (at output terminal P2).
WattNode Pulse Output kWh Transducer Features
• The WattNode transducer includes three LEDs—one per phase—for diagnostics and indication of power direction and
correctly installed CTs.
• The WattNode transducer provides bidirectional kWh energy pulses. Positive energy pulses (energy consumed from the
utility) are output on the P1 and COM terminals and negative energy pulses (energy produced and supplied to the
utility) are output on the P2 and COM terminals. It can be used for conventional power and energy measurement as
well as for net metering and PV applications. For monitoring power demand as well as generated power, a second S-
© 2005–2015 Onset Computer Corporation. All rights reserved. Onset, HOBO, HOBOware, and HOBOlink are registered trademarks of
Onset Computer Corporation. Other products and brand names may be trademarks or registered trademarks of their respective owners.
10332-M MAN-WATTNODE
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Output
Pulses representing kWh
Pulses representing kWh
Pulses representing kWh
Pulses representing kWh
DANGER!
—HIGH VOLTAGE HAZARD
DataLoggerStore
www.
Maximum Pulse Output
WattNode Part No.
4 Hz
WNB-3Y-208-P
4 Hz
WNB-3Y-208-P
option P3
4 Hz
WNB-3D-240-P
4 Hz
WNB-3D-480-P
WattNode Pulse Output kWh Transducer
(Onset Part No. T-WNB-3Y-208-P shown)
1.800.561.8187
.ca
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Summary of Contents for WattNode T-WNB-3Y-208
- Page 1 RX3000 series) or CABLE-2.5-STEREO (for pulse input-compatible ZW series) is required (at output terminal P2). WattNode Pulse Output kWh Transducer Features • The WattNode transducer includes three LEDs—one per phase—for diagnostics and indication of power direction and correctly installed CTs.
-
Page 2: Electrical Service Types
ZW series) is required (at output terminal P2). • The T-WNB-3Y-208-P can measure two or three separate branch circuits simultaneously. Note that an S-UCC-M00x pulse input adapter (for H21, H22, U30, or RX3000 series) or a CABLE-2.5-STEREO (for pulse input-compatible ZW series) is required for each circuit monitored. -
Page 3: Single-Phase Two-Wire With Neutral
WattNode is powered from the N and ØA terminals. Figure 2: Single-Phase Two-Wire Connection Recommended WattNode Model The following table shows the WattNode model that should be used, depending on the line to neutral voltage. Line to Neutral Voltage WattNode Model... -
Page 4: Single-Phase Two-Wire Without Neutral
Recommended WattNode Models The following table shows the WattNode models that can be used. If neutral may or may not be present, you should use the WNB-3D-240-P (see Single-Phase Two-Wire without Neutral below). If neutral is present, it must be connected for accurate measurements. -
Page 5: Three-Phase Four-Wire Wye
Note: you may also use the following delta WattNode models to measure three-phase four-wire wye circuits. The only difference is that delta WattNode models are powered from ØA and ØB, rather than N and ØA. If neutral is present, it must be connected for accurate measurements. - Page 6 Figure 6: Three-Phase Three-Wire Delta (No Neutral) Connection Recommended WattNode Models The following table shows the WattNode model that should be used, depending on the line to neutral voltage and line to line voltage (also called phase to phase voltage).
- Page 7 Figure 7: Separate Branch Circuits Connection ** The T-WNB-3Y-208-P can measure two or three separate branch circuits simultaneously. Note that a S-UCC-M00x pulse input adapter (if used with H21, H22, U30, or RX3000 data loggers) or a CABLE-2.5-STEREO (if used with ZW data node or UX90 logger pulse ports) is required for each circuit monitored.