Build configurations and capabilities
Electrical Characteristics
Power rating = 50 VA up to 1.5 MVA
Phases = 1, 3
Frequency = 50/60 Hz, 400 Hz, up to 20 kHz
Voltages = Up to 600 Vrms
NRTL to UL 506 or 1561
Terminal Configurations
Copper buss bar
Silicon bronze hardware
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
Options
Casters
Circuit breakers
EMO switches
Current-limiting
FusesCurrent-limiting
Low-inrush
Examples of Rectifier Transformers
815 kVA transformer
3-Phase, 50 Hz
Primary = 11 kVrms L-L
Secondary = 32 secondaries
50 kVrms isolation
Electrostatic shield
Corona free at 130%
18.5 kVA transformer
3-Phase, 50/60Hz
Primary = 480 Vrms
Secondary = 65 - 33 Vrms @ 18.5 kVA
Multi-tap secondary
Copper buss secondary
NRTL to UL 1561
5.2 kVA transformer
3-Phase, 50/60Hz
Primary = 440 Vrms Delta L-L
Secondary = 9.77 kVrms ±2% L-: @ 204 Arms ±4 mArms
12-pulse