Liquid-Filled Transformers
Powering Utility, Industrial, and Commercial Operations. Our expert sales team helps you specify your individual transformer requirements. Our engineering and manufacturing staff transform your requirements into a unique, top-quality, efficient, long-life solution for your application. VTC-GTC will customize units for special requirements. Common options and accessories are available for system protection, reliability, and hassle-free maintenance. Virginia Transformer brings more than 50 years of transformer engineering experience to each new
assignment. We have amassed an archive of more than 20,000 designs and test data, serving as an exclusive resource for developing new solutions… perhaps yours.
Full Range of liquid-Filled Transformers
VTC-GTC manufactures a full range of liquid-filled transformers up to
500 MVA 500 kV class.
Automatic load Tap Changing (lTC) Transformers
Tap Changer Types: Virginia Transformer offers resistive-type LTC or reactive vacuum-type systems. We will custom-engineer your transformer with
an LTC switch connected to the low voltage winding or on the high voltage winding.
Three-Phase Voltage Regulators
Our voltage regulators are used in distribution applications throughout North America to maintain voltage over transmission lines.
Designs are made by the design manual and verified to meet all requirements of the customer. The ISO quality system is strictly observed in engineering and design implementation, with all aspects checked to ensure reliability and compliance with customer specifications.
Typical Applications
- Utilities & Renewables
- Generator step-up
- Generator station
- Autotransformers
- Substation
- Unit and station auxiliary transformer
- Data centers
- Chemical plants
- Mining operations
- Paper & steel mills
- Oil & gas
- Office & shopping complexes
- Water treatment plants
- Research facilities
- Furnace
- Traction
Benefits
- High overload capacities
- Economic operation
- High level of dielectric reliability
- Low corona levels
- Sealed unit requiring low maintenance
- Versatility of terminating options using throats, flanges or air terminal chambers
- Special designs – low sound level, voltage regulators, renewable pads, shunt reactors
VTC-GTC Liquid-Filled Transformers are integral to industrial, commercial, utility, and renewable operations, but
don’t let that limit your thinking. We build custom units for specialty segments such as mining, transit, oil & gas, marine, government, data centers, storage facilities, and export markets.
Circular Coil Windings for Better Stability
Virginia Transformer uses disc and/or helical winding types for both HV and V windings, using either copper or aluminum conductors, as specified or required. Windings are made in temperature and pressure-controlled environments. We typically provide circular coils, which are more stable than rectangular coils and offer greater short circuit withstand strength.
Circular coils are more stable than rectangular coils. Rectangular coils, under strong short-circuit conditions, tend to become circular, the natural shape to withstand maximal radial forces, a possible source of internal damage.
Core Stacking Configurations to Optimize Cost, Losses, and Sound Levels
Virginia Transformer engineers select from a variety of core lamination materials made from high-grade, grain-oriented silicon steel to optimize cost, losses, and sound levels. We use mitered-joint and/or step-lap core construction.
Choice of Oil Preservation Systems
Virginia Transformer offers three types of oil preservation systems for liquid-filled transformers. One of these systems will fit your needs best: sealed tanks, conservators, and automatic (nitrogen) positive-pressure systems.
Conservator tanks are custom-designed primarily for environments with extreme variations in ambient temperatures, most often in severe cold winter climates.
VCM (Virginia Control Module)
Transforms Control & Management
Monitor your transformer’s performance remotely with a wired or wireless connection available from VCM from Virginia Transformer.
VCM is a PC-based monitoring and diagnostic module to track and record top oil temperature, WTI (Winding Temp. Indicator), gas pressure, rate of rise pressure, and liquid level*. The device sends real-time solid-state contact outputs and data to SCADA systems, PCs, or mobile devices in full compliance with NERC-CIP. VCM analyzes and detects abnormal conditions and provides data for trend analysis and historical review. VCM can also have an added capability to integrate data from other Transformer Protection IEDs to be transmitted to a SCADA system.
*VCM connects through the internet remotely for a real-time view of transformer conditions