Substation Transformers
Powering solutions.
Boundary Electric supplies medium and high-voltage substation transformers up to 800MVA 500 kV, engineered for critical utility, industrial, and infrastructure applications.
- Capabilities
Capabilities
Our units are built to ANSI and IEEE standards, with customizable features including copper windings, FR3 fluid, OLTC or DETC options, and advanced protection relays. Designed for reliability and long service life, our substation transformers support demanding grid and generation projects across North America.
- Live-front or dead-front configurations
- Grain-oriented silicon-steel core
- Aluminum windings
- Class OA/FA/FFA cooling (ONAN/ONAF/ONAF) options
- Temperature rise: 55°C, 65°C, or 55/65°C dual rating
- Impedance per ANSI/IEEE standards
- Heavy-duty welded steel tank, painted for corrosion resistance
- Stainless steel option for corrosive or coastal environments
- Nitrogen blanket or conservator system
- Top-mounted pressure relief device
- Liquid level gauge
- Pressure/vacuum gauge
- Drain, filter, and sampling valves
- Sudden pressure relay
- Buchholz relay typical (for conservator designs)
- Rapid pressure rise relay
- Copper windings
- KNAN/FR3 natural ester fluid for environmental and fire safety
- OLTC or DETC
- Bushing CTs and PTs for protection and metering
- Digital monitoring systems and SCADA integration
- HV and LV cable boxes or air terminal chambers
- Seismic-rated designs
- Arc-resistant or low-profile substation enclosures
- Secondary breakers or switchgear integration