Build configurations and capabilities
Electrical Characteristics
50VA up to 1.5MVA
1-Phase, 3-Phase
50Hz and/or 60Hz, 400Hz up to 20,000Hz
Up to 600Vrms input
Up to 600Vrms output
NRTL to UL 506 or 1561
Terminal Configurations
Copper buss bar
Silicon bronze hardware
Terminal strip
Ring-lug compatibility
Touch-safe configurations
Lexan covers
Enclosures and weather
NEMA enclosures
NEMA 1: General purpose
NEMA 3: Weather-resistant (falling dirt, windblown dust, rain, sleet, snow, formation of ice)
NEMA 3R: Same as 3, omits protection against windblown dust
NEMA 4: Watertight
NEMA 4X: Same as 4, but stainless steel
NEMA 6: Submersible
Examples of Auto Transformers
Auto Transformer
3-Phase, 60Hz
Input=600V ±5% taps
Output=480V @ 193A
NEMA3R enclosure
NRTL to UL 1561
160kVA transformer
3-Phase, 60Hz
Input=505V wye
Output=480V
NEMA3R enclosure
NRTL to UL 1561