Lecture 40Electro Mechanical System1 Commercial Energy Meters

  • Published on

  • View

  • Download

Embed Size (px)


<ul><li><p>Lecture 40Electro Mechanical System*</p><p>Commercial Energy Meters</p><p>Electro Mechanical System</p></li><li><p>Lecture 40Electro Mechanical System*Consider a circuit with a source, a load, &amp; appropriate meters.P and Q are positive, so the load absorbs both active and reactive power. The line current I lags behind Eab by an angle .Current I has two components Ip &amp; Iq. Value Ip = P/E &amp; Iq = Q/E The apparent power S = EI, from which I = S/EThe phasor diagram shows</p><p>S =apparent power [VA|:P =active power [W]:Q =reactive power [var]</p><p>The angle = arctan Iq / Ip = arctan Q/P Relationship between P, Q, &amp; S</p><p>Electro Mechanical System</p></li><li><p>Lecture 40Electro Mechanical System*Energy Meters </p><p>Electro Mechanical System</p></li><li><p>Lecture 40Electro Mechanical System*PEL IndustriesSingle Phase Static Energy Meters Single phase static energy meter used for measurement of active (kWh) energy for Domestic &amp; commercial consumers. The meter complies with the IEC 62052-11, IEC 62053-21.Single Phase Electromechanical Energy Meters Single phase active energy meter is used by house hold and small commercial customers. The meter complies with the IEC 62052-11 and IEC 62053-11.Poly Phase Static Energy MetersThree phase multi-rate TOU/TOD meters are used for measurement of active (kWh) &amp; reactive (kvarh) energy in the three phase four wire and three phase three wire network for residential , commercial &amp; industrial consumers.</p><p>Energy Meters </p><p>Electro Mechanical System</p><p>****</p></li></ul>