address o no.810, yishan road shanghai china tel o 86-021-64850700 fax o 86-64852222 zip.200233 BL0935 tri-phase electrical energy features; *high accuracy,less than 0.3% error over a dynamic range of 200 to 1. *well reliability .supplies both fast (fp)and low pulse output(sp1,sp2),fp used to computer data processing and sp1,sp2 used to drive electrical motor. *operation at 5v,low power dissipation( 50mw typical) *fine dependability, able to working more than 20 years. system block diagram and packing diagram: function description: BL0935 is designed to compute the active power and electrical energy of trio-phase(including the dual-phase and single-phase).it provides a pulse output proportional to the sum of trio-phase active power as well as pulse used to drive dual-phase stepper motor .the influence of various phase power should be counted in when computing the power dissipation and electrical energy.consumption of energy is determined by the power measurement being integrated over timeless than 0.3% error over a dynamic range of 200:1. trio-phase power computation : p=ga* iv1 *ii1 + gb* iv2 *ii2+ gc * iv3 *ii3 where: iv1,iv2,iv3:the sampling value of tri-phase voltage ii1,ii2,ii3:the sampling value of tri-phase current ga,gb,gc:the gain of the trio-phase power multiplier fp: frequency of output pulse : ffp = k*p/3*ir2 where: ir: reference current k: constant of frequency conversion .com .com .com 4 .com u datasheet
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