Primary or Secondary Open Substation Transformers Substation VFI Transformer

Substation transformers can be designed and configured to meet any application requirements. Substation transformers are available in primary or secondary open substation with cover-mounted bushings fed from overhead lines; or primary or secondary unit substation with enclosed sidewall-mounted bushings for connections to primary or secondary switchgear.

• Meets or exceeds IEEE, ANSI, CSA/CEA and NEMA Standards
• De-energized tap changer, externally operable
• Extra-heavy, welded-in-place lifting lugs and jacking provisions
• Cover-mounted high-voltage and low-voltage porcelain bushings (Open Sub)
• Sidewall-mounted high-voltage porcelain bushings (Unit Sub)
• Sidewall-mounted low-voltage molded epoxy bushings with NEMA six-hole spades (Unit Sub)
• Tank bases designed to allow skidding or rolling in any direction
• One-inch upper filling plug with filter press connection
• One-inch combination drain/filtering valve with sampling device
• Available in ANSI #61 Light Gray or ANSI #70 Sky Gray
• Tank interior is painted light gray, improving visibility for field inspection and servicing
• Pressure test connection
• Dial-type thermometer
• Dial-type liquid level gauge
• Pressure vacuum gauge
• Stainless steel grounding pads
• Laser-scribed anodized aluminum nameplate
• Cooling radiators welded directly to tank
• Standard grade mineral insulating oil (for outdoor applications)
• Pressure relief device

Substation Transformers

Unit
Open
VFI
Available stock

Transformer Features

Standard Features
Optional Features

Transformer Protection

Overcurrent Protection
Overvoltage Protection

Literature

"The Substation of the Future," Utility Automation & Engineering, Nov. 2006

Economic Analysis
VFI Brochure