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Pulse Electronics' Sidewinder AC Current Sensors Provide a Highly Linear Output Voltage Over a Wide Dynamic Range
More accurate sensing from greater distances for distributed power generation, renewable energy and storage, load balancing, power monitoring, AMI, and smart meters(PresseBox) ( San Diego, Calif., )
"Pulse's new Sidewinder products are a disruptive technology for AC current sensing," explained Glenn Roemer, field application engineer, Pulse Electronics Power Division. "Metering and sensing of all kinds can be recorded from a larger spectrum and range of distances and tracked more accurately and precisely than previously possible. These new sensors meet the tightest specifications in the market, which is especially critical for smart metering applications."
Pulse's current sensors have a phase error of <0.05 degree, a 100KHz bandwidth, and a low temperature coefficient. They are based on the Rogowski Coil principle*. Pulse Electronics' patent-pending precision winding technique controls the parameters which directly influence the output voltage in current sensors. The segmented winding approach allows for a high number of winding turns per unit length to provide a sufficiently large output voltage for detection and integration.
Sidewinder products meet the Class 0.2 percent accuracy limits defined by the IEC 62053-22 and ANSI C12.20 standards for currents from 0.1A to 200A and above as well as the Class 1 requirement for immunity to external magnetic fields. They are immune to external AC magnetic fields and DC magnetic fields. The addition of a Faraday shield over the winding prevents electrostatic coupling from the AC voltage of the primary conductor and acts as an effective barrier against external electrical fields associated with nearby current carrying conductors.
Although the standard sensor is round, as are traditional sensors in the industry, because Pulse's sensors are not based on the traditional toroid core (round) shape, but on a coil configuration, the sensor can be made in several shapes and thicknesses in addition to the traditional round shape. The AC current sensors are supplied in trays, but other packaging options are available. They are priced at $1.90 each for 100,000 pieces. Samples and prices are available upon request. More information on Pulse Electronics' Sidewinder products can be found on datasheet P698 located on the Pulse Electronics website at http://productfinder.pulseeng.com/products/datasheets/P698.pdf.
* The Rogowski coil principle states that a conductor carrying an AC current i(t) and passing through a helical coil induces a voltage across the coil that is proportional to the rate of change of the current (di/dt) in the conductor.
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