ACI Current Transformers
Solid or Split Core
4 - 20 mA Out

 

 

The A/CTA Series current sensors monitor the current flowing to electrical equipment or buildings. The magnitude of this current is then converted into a linear and proportional 4 to 20 mA output signal, which can be monitored by your Building Management, DDC, or PLC controller.  Current sensors are available in either an Average or True RMS output version.  All of these sensors have jumper selectable input ranges except for  the 0 to 5 Amp input range. The A/CTA and A/SCTA series current sensors are fast acting and extremely accurate from 1 to 100% of the Full Scale Output.

All of the A/CTA and A/SCTAseries current sensors are factory calibrated using an NIST Traceable standard and shipped with the jumper placed in the largest jumper selectable range. 

In applications where the maximum current is larger than 250 Amps,  the use of a traditional ratio:5 (5A) current transformer and the  A/CTA-5 is recommended for best results. The A/CTA must be externally powered using 12 to 30V DC power.

Split core or solid core transformers available.

PRODUCT SPECIFICATIONS:
Sensor Supply Voltage (Vs +12 to 30 VDC
Amperage Rating 0-250 Amps (See Ordering Information)
Supply Current 36 mA max.
Output 4-20mA, 2-wire Loop Powered
Accuracy (from 1-100% of FSO) A/CTA: +/- 0.5%
A/CTA-VFD:+/- 0.5%
Maximum Load Resistance A/CTA: 700 Ohms @ 24VDC (Vs-9)/0.02-40.2
A/CTA-VFD: 650 Ohms @ 24VDC (Vs-10)/0.02-40.2 
Response Time A/CTA: < 75 mS
A/CTA-VFD: <200 mS
Operating Frequency Range 30 Hz to 1 KHz
Isolation Voltage 2,200 VAC
Max. Sensing Current Voltage 600 VAC
Aperture (Hole) Size 0.75, Accepts up to 350 MCM Cables
Operating Temp Range:
A/CTA -15 to 40C (5 to 104F)
A/CTA-VFD  0 to 40C (32 to 104F)
Operating Humidity Range 0 to 95% RH, non-condensing
Dimensions

Wiring Diagrams available at: www.workaci.com/instructions.htm

Ordering Information:  (Solid Core Transformers)    
Model # Description Jumper Selectable Range CE Compliant
A/CTA-5 Loop Powered, Solid-Core, 4-20 mA Average Output 0-5 Amps(Not Selectable) Yes
A/CTA-50 Loop Powered, Solid-Core, 4-20 mA Average Output 0-10, 0-20, 0-50 Amps Yes
A/CTA-200 Loop Powered, Solid-Core, 4-20 mA Average Output 0-100, 0-200, 0-250 Amps Yes
A/CTA-5-VFD Loop Powered, Solid-Core, True RMS, 4-20 mA Output 0-5 Amps(Not Selectable) No
A/CTA-50-VFD Loop Powered, Solid-Core, True RMS, 4-20 mA Output** 0-10, 0-20, 0-50 Amps No
A/CTA-200-VFD Loop Powered, Solid-Core, True RMS, 4-20 mA Output 0-100, 0-200, 0-250 Amps No
**Note: All -VFD options should be used with VFDs (Variable Frequency Drives)    


Ordering Information:  (Split Core Transformers)    
Model # Description Jumper Selectable Range CE Compliant
A/SCTA-5 Loop Powered, Split-Core, 4-20 mA Average Output 0-5 Amps(Not Selectable) Yes
A/SCTA-50 Loop Powered, Split-Core, 4-20 mA Average Output 0-10, 0-20, 0-50 Amps Yes
A/SCTA-200 Loop Powered, Split-Core, 4-20 mA Average Output 0-100, 0-150, 0-200 Amps Yes
A/SCTA-5-VFD Loop Powered, Split-Core, True RMS, 4-20 mA Output 0-5 Amps(Not Selectable) No
A/SCTA-50-VFD Loop Powered, Split-Core, True RMS, 4-20 mA Output** 0-10, 0-20, 0-50 Amps No
A/SCTA-200-VFD Loop Powered, Split-Core, True RMS, 4-20 mA Output 0-100, 0-150, 0-200 Amps No
**Note: All -VFD options should be used with VFDs (Variable Frequency Drives)    

Warning: Not intended to be used in Life & Safety Applications or for use in any hazardous locations.

Reference Pricing: 
Solid Core Current Transformers (4-20 mA out)   $ 110.00
Solid Core VFD Transformer (4 - 20 mA out)        $ 150.00
Split Core Current Transformers (4-20 mA out)    $ 150.00
Split Core VFD Transformer (4 - 20 mA out)         $ 175.00




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Note:  Prices shown are for reference only, and may change without notice.  Contact Advanced Industrial Systems, Inc. for firm price quotations.

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Last modified: Wednesday October 23, 2013.