Single phase meters, Electrical Engineering

Single Phase Meters

Single phase meters are commonly rated for 240 V AC supply; the current ratings are 5/10, 10/20, 2.5/10 or 5/20 A or are for direct connection to the mains. They begin registration along with small load of about 6 W and record up to 4800 W. The major feature of a single-phase meter (electromechanical induction type) is its simplicity, compactness and robust design. It comprises a potential coil and a current coil. The potential coil is fitted on the center limb of an E shaped electro-magnet and linked across the supply mains.

Same, the current coil consisting of a few turns of heavy gauge copper wire is wound on two limbs of a U shaped electro-magnet. The two fluxes, produced through the voltage (pressure or potential) coil and current coil, set up a mechanical torque on the non-magnetic aluminium disc (that is located among the 2 coils) causing it to rotate. A brake magnet of C shaped alloy steel is given to control the movement or rotation of the disc set up through two fluxes. The disc rotates through the narrow air gap of the C shaped magnet and eddy currents are set up, that interacts along with the field and exerts braking effect.

Posted Date: 2/6/2013 7:13:07 AM | Location : United States

Related Discussions:- Single phase meters, Assignment Help, Ask Question on Single phase meters, Get Answer, Expert's Help, Single phase meters Discussions

Write discussion on Single phase meters
Your posts are moderated
Related Questions
Consider a system described by the coupled difference equation y(k + 2) - ν(k) = 0 ν(k + 1) + y(k + 1) = u(k) where u(k) is the system input. (a) Find a state-variable

write a short notes of thermal compansation?

Specific Core Indicators Method This technique emphasizes to assign the responsibility and create the accountability. It is possible in which for any of the main indicators, t

Discuss classification of conducting materials into low resistivity and high resistivity materials. Conducting materials are categorized as low resistivity materials and high r

Q. Find the line current after the addition of capacitor bank? A 60-Hz, three-phase motor draws 25 kVA at 0.707 lagging power factor from a 220-V source. It is desired to impro

Q. Analyze Diode circuit with RLC load? Consider a diode circuit with an RLC load, as shown in Figure, and analyze it for i(t) when the switch S is closed at t = 0. Treat the d

For zero flag  RZ ( Return on Zero) and RNZ ( Return on no zero) Instructions RZ  returns from the subroutine to the  calling  program, if zero flag  is set  (Z= 1). The

what ''s part of dcmotor or dc generator