Build configurations and capabilities
Electrical Characteristics
Power rating=Up to 500 kVA
Phases=1 + 3
Frequency=50/60 Hz
Voltages=Up to 600 Vrms
Terminal Configurations
Copper buss bar
Silicon bronze hardware
Terminal strip
Ring-lug compatibility
Touch-safe configurations
Lexan covers
Bushings
Noise Attenuation
L-L
0.05 mHz=10 dB
0.15 mHz=40 dB
0.50 mHz=60 dB
1.50 mHz=60 dB
5.00 mHz=60 dB
20.00 mHz=55 dB
L-G
0.05 mHz=50 dB
0.15 mHz=50 dB
0.50 mHz=60 dB
1.50 mHz=60 dB
5.00 mHz=60 dB
20.00 mHz=55 dB
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
Locking devices
Current-limiting
Line filters
Receptacles
Ring-lug compatibility
Touch-safe barriers
Power conditioners are isolation transformers in enclosures assembled with a variety of associated electronic components to provide high levels of noise attenuation over a broad spectrum of frequencies. The main transformer design and selected components are chosen depending on the required level of noise attenuation. These are often combined with circuit protection, GFI's and/or any number of other electromechanical components.
Equipment manufacturers find it advantageous to add line (power) conditioning to their systems in order to protect against the instability of global power sources. Line conditioners protect against voltage spikes that can damage sensitive electronics.
QT&E power conditioners work to both protect systems from voltage spikes and increase throughput on yield by reducing electrical interference that can disrupt equipment functions and production processes.
Examples of Harmonic-Mitigating Transformers
750kVA Harmonic-Mitigating Transformer
3-Phase, 60Hz
Primary=4,160Vrms L-L Delta
Secondary=480Vrms L-L at 451Arms
Phase shifted=30o
NEMA1 enclosure
NRTL to UL 1561, CE Mark
185kVA Harmonic-Mitigating Transformer
3-Phase, 50/60Hz
Primary=460/470/480/490/550Vrms L-L Delta
Secondary=208/120Vrms @ 185kVA
Circuit protection
NEMA1 enclosure
NRTL to UL 1561, 508A, CE Mark