CRMagnetics Catalog

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Transducers
C
DC POWER MEASUREMENT
A plant manager needs to record the total charge to a bank of
batteries. A CR5210 DC Current Transducer is attached to one of the
incoming current lead and a CR5310 is attached to the incoming
voltage lines. The output from each transducer is attached to a 0-5
VDC analog input module on a PLC. The PLC computates the product
of the current and voltage for the total power usage.
This illustrates a typical application for monitoring current to a 3-
Phase motor. External current transformers attached to each of the
three incoming power lines. The secondary leads from each current
transformer are routed through the window openings in the CR4170
True RMS Current Transducer. A standard 5 Amp secondary current
transformer is recommended to be attached to a transducer rated for
5 Amp input. With the transducer attached to a PLC the over/under
current and phase loss conditions can be monitored.
OVER/UNDER CURRENT MONITORING
Typical Applications
INDUSTRIAL APPLICATIONS FOR ELECTRICAL TRANSDUCERS
The transducers and transmitters may be used with an external
split-core or solid-core current transformer. The external
transformer can be used to access remote loads or where the
current-carrying wire is too large to fit through the window
opening of the unit. A standard, 5 Amp secondary, commercial
grade current transformer would be attached with the secondary
leads threaded through the window opening. A transducer or
transmitter with a 0-5 Amp input range would be selected.
Request CR Magnetics Current Transformer Catalog Section F.
EXTERNAL CURRENT TRANSFORMERS
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3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119
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