Liquid-Filled Transformers

Full Range of liquid-Filled Transformers
VTC-GTC manufactures a full range of liquid-filled transformers up to
1400 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
the LTC switch connected on the low voltage winding or on the high voltage winding.
Three Phase Voltage Regulators
Designs are made by the design manual and verified to meet all requirements of the
customer. The ISO quality system is strictly observed in the engineering and design implementation checking all aspects to assure reliability and customer specification.

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 to name a few.
Circular Coil Windings for Better Stability
Virginia Transformer uses disc and/or helical winding types for both HV or 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.


Core Stacking Configurations to Optimize Cost, Losses and Sound Levels
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 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.