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 40°C (5 to 104°F)
A/CTA-VFD 0 to 40°C (32 to 104°F) |
| Operating Humidity Range | 0 to 95% RH, non-condensing |
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 VFD’s (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 VFD’s (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
