Full-Scale Pulse Frequency for Pulses per Watthour

Full-Scale Pulse Frequency for Pulses per Watthour Overview For some Pulse WattNode® meter applications, you need to specify the pulses per watt-hour or pulses per kWh (kilowatt-hour). The easiest approach is to use Option Kh, but you can use Option Hz=xxx, where xxx is the full-scale pulse frequency for the WattNode meter. This article discusses […]

WattNode Pulse Firmware Versions

WattNode Pulse Firmware Versions Contents 1 Overview 2 Firmware Versions 1-8 3 Firmware Version 9 4 Firmware Version 10 5 Firmware Version 11 6 Firmware Version 12 7 Firmware Version 13 8 Firmware Version 14 9 Firmware Version 15 10 Firmware Version 16 11 Firmware Version 17 12 Firmware Version 18 Overview This page lists […]

Option Kh - Watthours Per Pulse

WattNode Pulse – Option Kh – Watt-Hours Per Pulse Overview Option Kh (watt-hours per pulse or Kh Watthour Constant) specifies number of watt-hours that must accumulate for each pulse generated by the meter. Each pulse includes an ON (conducting) and OFF period. The number of watt-hours may be small, even less than one, or large; […]

WattNode Pulse (WNA Series) Watt-Hours per Pulse

WattNode® Pulse – Watt-Hours per Pulse To convert the count of pulses from a WattNode Pulse meter into watt-hours per pulse, see the manual for your model of meter and look for the “Scale Factors” tables. WattNode Pulse (WNB Series): Manual WNB Pulse.pdf WattNode Pulse (WNA Series – No longer in production): Manual WNA Pulse.pdf […]

Higher Than Expected Pulse Frequency

Higher Than Expected Pulse Frequency Overview You may see a higher than expected pulse frequency from your Advanced Pulse WattNode. There are several possible reasons for this. Power Over-Range Your load is consuming (or generating) more than the nominal full-scale power. For example, if you have a WNB-3Y-208-P with 30A CTs, the nominal line voltage […]

WattNode Pulse - Option P3 - Three Pulse Outputs

WattNode Pulse – Option P3 – Per-Phase Outputs Option P3 (per-phase outputs) for the WattNode® Pulse meter provides three separate pulse outputs on terminals P1, P2, and P3—one pulse output channel for each of the three measurement phases. Option P3 is fully documented in the main WattNode Pulse Manual. Example part numbers: WNB-3Y-208-P Opt P3 […]

Double Expected Readings with WattNode Pulse

Double Expected Readings with Pulse WattNode Overview You are using a WattNode Pulse and the indicated power or energy is roughly double the expected values. You’ve checked the scale factors and everything appears correct. Possible Problems Your data logger or pulse counting device is counting every transition or change of state (low-to-high and high-to-low) as […]