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POLY PHASE | SINGLE PHASE

ELECTROMECHANICAL METERS - Poly Phase Electromechanical Watthour Meter

TYPE D-58P FAMILY OF METERS

Polyphase induction Watt-hour meter for bottom connected applications, Model D-58P, 2 stators 3 wire or 3 stators (3 or 4 wires) line-load, 60, 120 or 240 Volts, 50 or 60 Hz, Cyclometer type register, primary or secondary reading, magnetic suspension or repulsion bearing system, accuracy class 2.

D-58P Polyphase meter with magnetic bearings are offered in 2 basic models:

D-58P: Self-contained type, rated current 15 or 30 Amp with 800% or 600% overload respectively.

D-58PC: Transformer rated, 2.5 or 5 A with 400% overload capacity respectively.

The key to D-58P meter's superior reliability and economy is its magnetic bearing system which most other meter manufacturer's either do not offer or offer only at premium price. Magnetic bearings ensure a long trouble free service life without any sacrifice in accuracy or the need of bearing replacement. It saves a lot of money since its friction free operation keeps the disc turning freely and accurately for years and years.


	Download Complete Details in pdf

Features

	Magnetic Suspension / Repulsion
	Precise calibration and high Accuracy
	Corrosion Resistance Construction
	Fully Sealed and weather-Proof design
	Extended Load range
	Longer term calibration Stability
	Tamper resistant meter Cover

Rotor Assembly

Composed of an aluminum shaft and discs in equal number as to stators, manufactured in adequate material to guarantee a lower weight to torque ratio and mechanical strength.

Breaking Element

The D-58P meter's retarding magnets, made of stable Alnico V material comes with class I thermal compensation, which ensures stable magnetic properties for different ambient temperatures.

D-58P Models Provide Superior Electrical Characteristics Here's Why

Rigid die-cast base and precision machining of the frame ensures perfect mechanical balance in the meter. The retarding magnets being die-cast in aluminum and fixed on the frame, can not get displaced due to vibration. Hence the meter calibration remains stable for a long time. Because of the temperature compensation the retarding magnets behave uniformly, even if the ambient temperature changes radically.

Driving Element Or Stator

The number of stators in the meter is according to the type of electric circuits to be measured, can be either 2 or 3.
Specially treated potential and current stator assemblies offer dependable service and high corrosion resistance.

Potential And Current Cores

Mounted on templates and riveted in order to assure perfect alignment and rigidity of the assembly and coated with electrophoretic paint against oxidation.

Potential Coils

D-58P meter Potential coils are nylon encapsulated which is non-hygroscopic and protects the meter against high voltage surges resulting from electrical storms and system transients. Voltage coils are machined wound from polyurethane coated wire.

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