480-347-277-125VA_15 Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – Step-Down Autotransformers for Lighting Applications

480V:347V:277V Series
Step-Down Autotransformers
for Lighting Applications
Features
• Input Voltage: 480V, 60 Hz or 347V, 60 Hz
• Output Voltage: 277V, 60 Hz
• Insulation Rating: 125 & 460– 105ºC, 245– 130ºC
• Non-isolated Autotransformer
• 5 Year Warranty - Industry Leading
Part Number
480:347:277-125VA
480:347:277:220-245VA
480:347:277-460VA
Losses
7W
10W
18W
Input Current
Max Load
0.26 A
0.57 A
0.95 A
Input Current
No Load
0.070 A
0.080 A
0.220 A
Weight
(lbs)
2.3
5.3
7.2
Dimensions
Model
A
(in)
B
(in)
C
(in)
D
(in)
E
(in)
125VA
See drawing below (mm)
245VA
3.39
3.07
2.81
2.68
3.34
460VA
3.82
3.34
3.15
2.95
3.74
125 VA
245 and 460 VA
A
B
83.0 ±1.0
95.0 ±2.0
2- 4.5x7
DE
C
Step-down autotransformers designed especially
for lighting applications, typically used with 277V
LED Drivers, T-5 or T-8 Electronic Fluorescent
Ballasts or Electronic HID Ballasts in Industrial
and Commercial applications.
Wiring
480V RED
347V BLUE
277V BLACK
220V ORANGE
(245VA Model Only)
COM WHITE
COM WHITE
Wiring Notes:
• Wye 480V system–Connect red (or blue for
347V) and white wires to any two phase wires.
• Delta 480V–Connect to grounded referenced
legs only.
E318949
Specifications subject to change without notice.
Rev 7-15-14
Thomas Research Products • 1215 Bowes Rd • Elgin, IL 60123 • T 847-515-3057 • F 847-515-3047 • www.trpssl.com