The Allen-Bradley 1391-T050DT has a 240/480V AC Primary Voltage, 3 Phases, and a 60 Hz Frequency. It also contains a 230V AC Single-Phase C.T. Windings Secondary Voltage.
The Allen - Bradley 1391B-ES controllers come in current ratings of 15, 22.5, and 45 Amps. A complete servo system consists of a 1391B - ES controller, a 1391 transformer, a 1326 servo motor, and 1326 cables.
The 1391-T050DT isolation transformer is rated at 5.0 kVA. Its primary voltage ranges from 240 to 480 Volts AC, with a 3 - phase input and a supported line frequency of 60 Hertz. The secondary voltage is 3 - phase 230 Volts AC, and it also includes four single - phase windings rated at 36 Volts AC. The 36 Volts AC output of the transformer is used to power the logic control board on the 1391B-ES controller. Specifically, the 36 Volts AC leads are connected to terminals 19 and 21 on Terminal Block 4 of the controller, while the center tap is connected to terminal 20 of Terminal Block 4.
Manufacturer Rockwell Automation
Brand Allen-Bradley
Part Number/Catalog No. 1391-T050DT
Product Type Isolation Transformer
kVA Rating 5
Primary Voltage 240/480V AC
Phase 3
Frequency 60 Hz
Secondary Voltage 230V AC Single-Phase C.T. Windings
use with Allen-Bradley 1391B-ES servo controllers. To ensure that the UL listing of the 1391B - ES controllers remains valid, users must supply power to these controllers from an Allen - Bradley 1391 isolation transformer. Using other types of transformers will invalidate the UL listing.
Regarding power dissipation, the 1391-T050DT isolation transformer has values of 50, 100, 150, 200, and 250 Watts at 20, 40, 60, 80, and 100% of its rated output respectively.
This isolation transformer weighs 100 pounds and has dimensions of 11 x 14 x 11 inches. The ambient air temperature around the 1391-T050DT isolation transformer needs to be maintained between 0 and 60 degrees Celsius, and the relative humidity should be kept within the range of 5 to 95% (non - condensing).
Alternative model names
1391-T05ODT
1391-TO50DT
1391-TO5ODT
1391T050DT
1391T05ODT
1391TO50DT
1391TO5ODT
139L-T050DT
139LT050DT
L391-T050DT
L391T050DT
L39L-T050DT
L39L-TO5ODT
L39LT050DT
L39LTO5ODT