Model Number: 200:5 Byram CMF, Indoor/Outdoor Rated, Bar Type Flat Base
Ordering Number: CMF 200
Technical Specifications
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Primary currents: Up to 200 Amps
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Secondary current: 5 Amps
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Frequency: 60 Hz
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Inner diameter: 2.5" [64mm]
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Outer diameter: 5.25" [133mm]
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Rating Factors: Up to RF 4
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Metering class: 0.3%
0.3% standard accuracy
Application
The CMF is primarily used with watt-hour meters, with or without thermal demand attachments. Applicable to single or polyphase low voltage circuits, both single and dual ratio units are available. Many ratings feature high rating factors of 3.0 or 4.0 for broad
band metering. A wide range of ratings and accessories such as single and dual ratings, high rating factors, primary bar assemblies, or a high base reduce inventory cost and increase application flexibility.
Construction and insulation
The ring-type core and fully distributed winding are assembled to a glass filled polypropylene window liner and injection molded in thermoplastic rubber. The thermoplastic rubber insulating material is permanently molded to the core and coil assembly, resulting in a compact unit with excellent mechanical, thermal, and dielectric characteristics.
Primary
The CMF has a round primary opening suited for circuits requiring more than one cable lead. The large opening accommodates conductors required for full current capacity, even at high rating factors. The 200 ampere unit accommodates two 500 MCM insulated cables. A removable primary bar can be supplied with a slot hole or 4-hole NEMA pattern.
Secondary terminals and cover
The CMF is supplied with embedded compression-type secondary terminals, a short circuit device, and a clear, rectangular snap-on cover suitable for locking with a meter seal. This clear plastic cover allows a visual check of connections and is keyed to ensure the shorting clip is across the terminals when no wires are connected. This safety feature avoids dangerous voltages across the secondary terminals if the primary is energized. Terminals accomodate #14-6 wire and can also serve as a post-type connector by looping wire under the screw head. Dual ratios are supplied with large compression-type terminals with slotted head screws and a similar short circuit device and cover. The center post also serves as a third terminal on dual ratio transformers.
Broad band metering
Ratings of 50:5 through 1200:5 meet broad band metering requirements of high rating factors and large window openings. This permits using a single transformer rating for a wide range of load.
Base
The base is constructed of corrosion-resistant aluminum and secured to the encapsulated base support by four symmetrically located screws.
Test reports
Test reports are stored electronically and can be e-mailed in various formats at the time of shipment.
Standards
This unit meets or exceeds all requirements of IEEE C57.13-2016 and can be tested to other standards as requested
