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RoCoil TCA-5


A Flexible CT with a 5 amp output!

The RoCoil TCA-5 is a three-channel integrating transconductance amplifier (TCA) that converts the 131mV/1000A electrical output signal from the RoCoil current sensor to a 5 amp AC current, emulating a traditional current sensing transformer.

The RoCoil TCA-5 is factory-calibrated to work with DENT RoCoil CTs (131mV/1000A). The unit can be DIN or panel mounted and a 10" section of TS35/7 DIN rail is included with the kit.

AC/DC 48V Power Supply
The RoCoil TCA-5 requires an external 48 VDC power supply for operation. Two versions of the power supply are available: a 120/240VAC "low voltage" version and a 400/500VAC "high voltage" version. The power supply is provided as part of the RoCoil TCA-5 kit or may be ordered separately.

Selectable Current Ranges and Frequency
The RoCoil TCA-5 has four selectable current ranges: 500, 1000, 2500, and 5000A. The range is changed using a switch on the front of the device. See Current Ranges table (left) for current range information.

A separate switch on the front is used to change the frequency between 50 and 60 Hz.

The RoCoil TCA-5 is intended to be wall mounted with the output terminals facing up. Three RoCoil current sensors will typically be installed inside the service panel at the feeder or around the branch circuit of interest. The RoCoil TCA-5 can be mounted as a panel unit using slide-out tabs on the back or mounted on a 35 mm width DIN rail (a 10" section of DIN rail is included when ordered as a kit from DENT Instruments). The diagram is of a typical, recommended installation.