EEE PRESENTEC 2011 GUIDE: A.MARIMUTHU
PREPARED BY:
M. GOPALA KRISHNAN
SELVA SUNDAR. R
AKHIL LAL
SURESH. S
RAJA
INFANT JESUS COLLEGE OF ENGG
GUIDE HOD/EEE
ABSTRACT
The topic of this paper is energy meter. This paper deals with energy meter, its types, working principle, some advance meters, advantages, disadvantages application, conclusion. The condent of this paper is taken from electrical technology text book written by A.K. THERAJA and from various internet resources.
INTRODUCTION
An electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residence, business, or an electrically powered device.
Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour. Periodic readings of electric meters establishes billing cycles and energy used during a cycle.
In settings when energy savings during certain periods are desired, meters may measure demand, the maximum use of power in some interval. In some areas the electric rates are higher during certain times of day, reflecting the higher cost of power resources during peak demand time periods. Also, in some areas meters have relays to turn off nonessential equipment.[1] * |
History
Direct Current (DC)
As commercial use of electric energy spread in the 1880s, it became increasingly important that an electric energy meter, similar to the then existing gas meters, was required to properly bill customers for the cost of energy, instead of billing for a fixed number of lamps per month. Many experimental types of meter were developed. Edison at first worked on a DC electromechanical meter with a direct reading register, but instead developed an electrochemical metering system, which used an electrolytic cell to totalize current consumption. At periodic intervals the plates were removed, weighed, and the customer billed. The
References: 1. Quote from Encyclopedia Britannica” electricity meter (physics)” (online). Britannica 2009. Pp. 1. Retrieved 2009-08-12. 2. A. K. THERAJA in his seminal work electricity and technology text book