Description

The TCSA Series is a loop-powered, linear output current

transducer that provides an output that is directly proportional

to the RMS AC current passing through the onboard toroid. The

TCSA provides a 4 - 20mA output over a power supply range of

10 - 30VDC. Each unit is factory calibrated for monitoring in one

of four ranges; 0-5, 0-10, 0-20, or 0-50A. The 0 - 5A range allows

the use of external current transformers so loads up to 1200AC

amps can be monitored.

Operation

The TCSA varies the effective resistance of its output in direct

proportion to the current flowing in the monitored conductor.

The unit is factory calibrated so that 0 amps provides a 4mA

output and full span provides a 20mA output. Zero and span

adjustments are provided for minor calibration adjustments in

the field (if required).

Using an External Current Transformer (CT)

Select a 2VA, 0 to 5A output CT, rated for the current to be

monitored. Select TCSA5. Pass one of the CT’s secondary wire

leads through the TCSA’s toroid. Connect the CT’s secondary

leads together.

Features

JJ Monitors 0 - 50A in 4 ranges

JJ Loop powered from 10 to 30VDC

JJ Linear output from 4 - 20mA

JJ Zero & span adjustments

JJ Complete isolation between sensed current & control circuit