Model RCTrms flexible "rope type" current transformer for fast clip-around installation with true rms output for process control, arc furness and induction heating

Description

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:

• Easy to retrofit
• Simple to install in applications where space is limited
• The size of the Rogowski coil can be specified independently of the primary current
• Does not suffer from magnetic saturation
• Intrinsically safe
• Ideal for process control, status alarming or system monitoring for a 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