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Meter shunt resistor offers 3W power

Posted: 25 Jan 2008     Print Version  Bookmark and Share

Keywords:meter shunt resistors  electric meter accuracy  low resistance value 

Vishay Intertechnology Inc. has announced a new Power Metal Strip meter shunt resistor that offers 3W power capability in the 5515 size package, with low resistance values down to 100µΩ.

The WSMS5515 meter shunt resistor features a proprietary processing technique that produces very low resistance values, from 100µΩ to 500µΩ, which provide increased accuracy in current meter shunt applications for industrial and residential electronic power meters.

The new resistor promises increased accuracy to help designers meet specific customer requirements, thus providing end users with more accurate metering of electric usage.

With a 4-terminal (Kelvin) connection design, the WSMS5515 features all-welded construction and a high power-to-resistor size ratio. The resistor low inductance values of <5nH, a thermal EMF of <3µV/°C, and a frequency response to 50MHz. The device is Pb-free and RoHS-compliant.

Samples and production quantities of the new meter shunt resistor are already available, with a lead time of six to eight weeks for larger orders.

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