| 摘要 |
<p>The invention provides an induction meter including voltage (12) and current (14) magnetic sections each producing magnetic flux for driving a rotatable disk (16) at a rate responsive to an AC electric energy quantity to be measured. The induction meter has an improved voltage magnetic section comprised of a substantially E-shaped laminated magnetic core (24) having a center leg (26) terminating at a main pole face and two adjacent legs (28, 30) terminating at coplanar auxiliary pole faces on opposite sides of the main pole face. A voltage coil (33) is wound about the center leg and a nonmagnetic multi-function support and spacer bracket extends from one of the adjacent legs to the other adjacent leg and has three perpendicular extensions (43, 44, 45) which give the bracket a substantially E-shaped configuration. The bracket is located adjacent to a first side of the magnetic core and has one edge substantially coplanar with the auxiliary pole faces. A T-shaped laminated magnetic core piece includes a perpendicular extension (not visible in Fig. 1) corresponding to the center leg to provide support for the voltage coil. A light load adjuster bracket (54) provides an adjustable shunt path for magnetic flux between the main pole face and the auxiliary pole faces. The light load adjuster bracket is located in magnetic proximity to the same first side of the magnetic core and is separated therefrom by the nonmagnetic bracket. A power factor bracket (37) extends from the second side of the magnetic core. A flux return tongue (39) is carried by the power factor bracket and is located opposite the main pole face while maintaining a spaced relationship therewith. </p> |
