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The
RCTrms is an AC Rope CT (current transducer) for permanent
installation. Simple to install and easy to retrofit, it combines
the benefit of a thin, flexible, clip-around Rogowski (sense) coil
with a signal conditioner providing accurate, true rms measurement
of ac current.
The RCTrms has an industry standard 0-5V or 4-20mA dc output making it
ideal for process control, status alarming or system monitoring
purposes. Typically the RCTrms is used with SCADA systems, PLCs,
data loggers and protection equipment.
The RCTrms gives a dc output proportional to the true rms of the
primary current and has these advantages:
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Easy to retrofit
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Simple to install in applications where space is limited
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The size of the Rogowski coil can be specified independently of
the primary current
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Does not suffer from magnetic saturation
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intrinsically safe
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Ideal for process control, status alarming or system monitoring
in a wise variety of applications, from arc furnaces to power
distribution
The available RCTrms current ranges are 0-100A to 0-50,000Apk, also
providing accurate measurement over a wide bandwidth ensuring
precise measurement even with harmonically distorted waveshapes -
using a flexible clip-on sensing coil.
The RCTrms sensor can
provide all popular process control voltage and current loop outputs
along with custom output options. Because the current sensors are
split core, installation is possible without shutting down the
electrical supply - saving down-time costs. Typical applications are
retrospective energy monitoring in factories, offices, process
control systems like PLC, SCADA Data logging systems, all where
power, energy and current monitoring is important. Typical
loading situations are factories, shops, offices, ac/dc VFD drives,
ultrasonics, welding, power conversion and power distribution.
For all RCTrms models, a NIST/NPL (UKAS) traceable calibration
certificate and certificate of conformance is supplied. All RCTrms
sensors use UL or CSA approved materials.
For level sensing, alarm and threshold monitoring please see
Trip relay
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