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. OperationThe 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 Sensor Type Toroid, through hole wiring, alternating current,monitored conductor must be properly insulated Monitored AC Current Ranges 0 - 50A 4 Factory Calibrated Ranges 0 - 5A, 0 - 10A, 0 - 20A, or 0 - 50A Factory Calibration ≤±2% of full scale Maximum Allowable Current Steady – 50A turns; Inrush – 300A turns for 10s Repeat Accuracy ≤±0.25% of full scale under fixed conditions Response Time ≅ 300ms Burden ≤ 0.5VA AC Line Frequency 0 - 20A / 21 - 50A 20 - 100Hz / 30 - 100Hz Temperature Coefficient ±0.05%/°C Output Type: Series Connection Current directly proportional to monitored current Range 4 - 20mA Sensor Supply Voltage* 10 to 30VDC Momentary Voltage 40VDC for 1m Zero Adjust ≅ 3.75 - 4.25mA Span Adjust 18mA - 22mA Adjustment Mini-screw, 25-turn potentiometer Protection Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface Insulation Resistance ≥ 100 MΩ Polarity Units are reverse polarity protected Mechanical Mounting Surface mount with one #10 (M5 x 0.8) screw Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);D 44.5 mm (1.75”) Termination 0.25 in. (6.35 mm) male quick connect terminals Sensor Hole 0.36 in. (9.14 mm) for up to #4 AWG (21.1 mm2 ) THHN wire Environmental Operating/Storage Temperature -30° to 60°C/-40° to 85°C Weight ≅ 2.4 oz (68 g) Humidity 95% relative, non-condensing
