Electrical
Power Rating
Specify the required power by calculating secondary voltage multiplied by current. ex. 10 kVA. QT&E supports power ranges from:
1 VA - 1 kVA
1 kVA - 100 kVA
100 kVA - 2 MVA
Frequency
Define the operating frequency of your system (e.g., 50 Hz, 60 Hz, or custom). ex. 60 Hz. QT&E supports frequencies from:
50 Hz or 60 Hz
400 Hz up to 20 kHz
Phases
Choose between single-phase or three-phase configurations to match your application requirements; QT&E designs for both types. ex. 3PH.
Single-phase
Three-phase
Inputs & Outputs
Indicate the number, voltage, and current ratings for primary and secondary windings; QT&E accommodates a wide range of configurations and load profiles. ex. Input: 480V, Output: 120/240V split-phase.
1 V up to 600 V (up to 1.5 MVA)
Isolation
Specify isolation requirements to ensure safety and signal integrity. ex. 4 kV isolation voltage. QT&E supports:
AC=up to 150,000Vrms
DC=up to 300,000VDC
Let us know your desired level of isolation (working)
Dielectrics
Specify the dielectric medium required based on your applications insulation, cooling, and environmental needs. QT&E offers various options to meet specific performance and safety requirements. ex. Epoxy filled.
Air
Oil
SF6 gas
Epoxy filled
Noise suppression
Indicate the need for minimizing audible or electrical noise; QT&E incorporates low-noise laminations and shielding for sensitive environments. ex. 40 dB attenuation at 1 kHz
Ground loop elimination
State requirements for reducing ground loops in your system; QT&E designs with specialized grounding and isolation techniques. ex. Floating secondary with ground shield
Shielding
Specify electromagnetic or electrostatic shielding to prevent interference; QT&E offers designs with custom shielding options. ex. Faraday shield with 90% attenuation
Low Leakage Current
Define acceptable leakage current levels for safety or regulatory compliance; QT&E produces designs with minimized leakage current. ex. < 300 μA
Harmonic Reduction
Specify harmonic reduction needs to improve power quality; QT&E provides designs with specialized cores and K-rated transformers. ex. Reduces THD to <5%
Mechanical
Temperature Rise
Specify the allowable temperature rise above ambient for your application (measured in °C), typically based on insulation class or operational needs. ex. 80°C (standard for Class B).
Dimensions
Define the physical size constraints (height, width, depth) to fit your installation space. ex. H: 24 in, W: 18 in, D: 12 in
Enclosure
Indicate the required enclosure type based on environmental conditions, such as indoor, outdoor, or hazardous locations. ex. NEMA 1 (indoor use). Options include:
NEMA 1: Standard
NEMA 2
NEMA 3 + 3R: Protection from falling water.
NEMA 4 + 4X: Water proof, fully enclosed.
NEMA 6
Circuit Protection
Specify integrated circuit protection needs, such as fuses or breakers, for overload and fault conditions. ex. Primary & Secondary circuit breakers. Options include:
Circuit breakers
Fuses
Seismic Kits
Indicate if seismic bracing is needed to meet building codes in earthquake-prone areas. ex. Designed for Zone 4 seismic compliance
