Field Current Transducers

Transducers designed for the measurement of generator field currents (used with a shunt). The input is designed for 50mV or 75mV shunts and has an isolation rating of 3500 VDC. Standard output is either ±10VDC or 4­20mA. Housed in a fiberglass box with watertight fittings for cable entry and exit.

FCT-01-10V Output:
±10VDC

FCT-01-420m Output:
4-20mA

bipolar:
-75mV in:4mA out, 0mV in:12mA out, 75mV in:20mA out

unipolar:
0mV in:4mA out, 75mV in:20mA out

Bandwidth:
-3dB @ 1500Hz

Gain:
Adjustable: typically set to 133.3 which yields 10VDC out for a 0.075V input from a standard 75mV shunt.

Gain Drift:
25 ppm/°C max

Isolation:
Uses a 3 port isolation amplifier (input, output and power supply) with ±3500 VDC isolation between any two ports.

CMRR:
Min. 80dB typical 85dB

Nonlinearity:
±0.012%

Cables:
Requires input (high voltage), output and power

Power Supply:
120VAC @ 60Hz. or 24 – 36 VDC supply
Operating temperature:
-40°C to +85°C

Dimensions:
8″L x 4.7″W x 4″D

Weight:
1.6Kg (3.2Kg with cables)

Options:
High voltage test leads with alligator clips

Model Numbers:
FCT-01-10V Field Current Transducer   0-10V out
FCT-01-420M Field Current Transducer   4-20mA out

Delivery:
Typically 4 – 6 weeks