Products - Meters - THREE PHASE ELECTRONIC METER WATT-HOUR METER - ELESEWEDY ELECTRO METER EGYPT S.A.E - EM 413 - TECHNICAL INSTRUCTIONS MANUAL - EM 501

 

Introduction


The EM413-A and EM413-R, three-phase electromechanical meters for active power and reactive power respectively are designed to meet the latest IEC 60521, IEC 62053-11 and ANSI standards. With accuracy of class 2, they measure active energy in phase-phase three and four-wires. They are reliable long service life meters with average 20 years. The specifications of the meters can be tailored to customers’ requirements.

Construction


Meter case: - Available: Bakelite, transparent and black polycarbonate.

Terminal block: - The terminal block is molded of heat- and flame- resistant Bakelite.

Driving Element: - The driving element consists of 3 voltage element and 3 current elements for the 4 wire type, both of which are fixed on the aluminum alloy frame.

Rotor: - The rotor disk is made of hard and high purity 2 rotors aluminum. Its surface is treated with anodic oxidation to be corrosion-resistant.

Braking Element: - The braking element consists of two magnet cubes of die-casting aluminum alloy. A temperature compensation plate made of a special alloy.

Frame: - The frame is made of a high-quality aluminum alloy material. Its surface is treated by negative electrophoresis to achieve excellent corrosion-profess.

Upper Bearing: - The upper bearing consists of a guide pin and a brass sleeve, and is fixed into the meter frame by one screw. The pin is made of abrasion-proof stainless steel, and is pressed into the brass sleeve. It is the rotor guide.

Lower Bearing: - Both double jewel and magnetic bearings are available. It is long service life.

Register: - Direct-reading cyclometer type registers is available and also be calculated according to the CT values. The register can be mounted on the frame by one screw without the need of manual adjustment or by two screws fixation. It is self-located to insure the proper mesh with the worm. Gears are made of high quality material with long service life and it resists corrosion.

 



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