Dry-Type Transformer Specifications
Traction-Duty Transformer
By providing you with the exact configuration your transformer requires, the Niagara Transformer Corp. minimizes the time and cost of field installation. There are no standard models at the Niagara Transformer Corp. Our design approach ensures that you receive exactly what you need at a competitive price.
We can provide transformers with the following specialized options:
- Coordinated HV and LV termination location
- Coordinated HV and LV elevation
- Special dimensions
- Special arrangement
- Nonstandard kVA
- Nonstandard voltages
- Nonstandard BIL
- Nonstandard sound levels
- Special impedance (low or high)
- Special termination arrangements
- Low operating temperature rises
- Special footprints
- Retrofit accessory location
- Special paint color coordination
General Specifications
Comb Winding 12-Pulse Rectifier-Duty Transformer
Coils
All coils are designed based on the customer's specific application. The kVA, voltage rating, and the application dictate the use of either circular or elliptical forms with windings of barrel configurations. Coils can be furnished with temperature rise ratings of 80°C, 115°C or 150°C above ambient. Enhanced rating of units is available for 80°C or 115°C rise units.
Cores
Cores are made from high-grade, non-aging, grain-oriented, cold-rolled silicone steel. They are laminated for high magnetic permeability and low hysteresis and eddy current losses.
The Niagara Transformer Corp. offers computer-generated cores designed for the customer's specific application. Stacked cruciform cores employ step-lap mitered, mitered, or butt-cut configurations.
Enclosures
Constructed of hot-rolled steel, stainless steel, aluminum or fiberglass. Standard enclosures are knockdown, bolted, sheet metal construction, with a structural steel base, and provisions for lifting at the base. Larger special enclosures are fabricated using a welded, structural steel skeleton, bolted panels for easy access to critical areas of the transformer, and provisions for lifting from the top.
Finishes
Niagara Transformer's standard paint finish is ANSI #70 Gray. We can furnish any ANSI paint color specified, or match a paint color if a paint chip is supplied. Special finishes can be supplied on request for:
- Chemical and/or corrosive environments;
- High-humidity locations;
- Offshore and coastal, salt-laden environments.
Cooling
Additional cooling, provided by motor-driven fans mounted on the transformer base, can be added to the transformer using single-stage, forced-air cooling to increase capacity within guaranteed temperature limits for:
- Continuous operation;
- Periods of overloading;
- Seasonal changes of loading.
Dry-Type Multi-Tapped Test Transformer
