T R A N S M I S S I O N & D I S T R I B U T I O N

Gas Insulated Transformer

Toshiba’s Gas Insulated Transformer (GIT) is the most technologically advanced solution for hydro-power and underground substations, densely populated cities, and offshore substations. We have replaced traditionally hazardous oil with SF6 gas to offer a safer, more environmentally conscious, and more economical transformer to overcome sharp increases in today’s demand for electric power.

ADVANCED FEATURES TO PROTECT YOU & THE ENVIRONMENT

�Non-flammable and non-explosive SF6 gas makes our GIT much safer and more environmentally friendly than oil insulated transformers, which carry the risks of fire hazards, explosions, and oil leaks that can contaminate our natural resources.

�No Conservator is needed for the compact Toshiba GIT, reducing the height and weight of the transformer.

�No oil to check or replace significantly reduces the amount of routine maintenance and minimizes long-term maintenance requirements.

�No fire extinguishing and oil collection systems are required due to the replacement of oil with SF6 gas, resulting in lowered design and installation costs.

�Turnkey capabilities for Toshiba’s GIT include installation, commissioning, and service checks.

�Voltage ratings are available up to 500 kV and 400 MVA.

THE SAFER, MORE RELIABLE TRANSFORMER FOR THE EVER-INCREASING DEMAND IN ELECTRIC POWER

GIT WORLDWIDE APPLICATIONS

Toshiba has vast experience and a proven track record in the transformer market over the last 100 years. Known as a leading innovator of GITs, Toshiba has an installed base of over 700 GITs worldwide, with the oldest units installed over 45 years ago. We are proud of our successes in the transformer market and are planning for future GIT installations as we continue our expansion into the North American market.

OIT

Tank Strength Limit100

80

60

40

20

00 0.2 0.4 0.6 0.8 1.21

GIT

Fault Time (sec)

Pre

ssur

e R

ise

(%)

SF6 Insulation

Pressure RiseDuring Fault

Is Small

Due to the characteristics of SF6 gas, tank pressure increases are very minimal in the event of a system failure, virtually eliminating the risk of fires and tank explosions.

Oil Insulated Transformer (OIT)

Gas Insulated Transformer (GIT)

Insulation/Cooling Insulating Oil SF6 Pressure 0.14 or 0.43 MPa-g (20oC)

Solid Insulation Material Cellulose Paper, PressboardPET Film, PPS Film,

Aramide Paper, Pressboard

Conservator Necessary Unnecessary

On-Load Tap ChargerDiverter Switch

Tap Selector

Arcing Switching in OilSlide Contact

Vacuum InterrupterRoller Contact

Fire Suppression System Necessary Unnecessary

Oil Collection System Necessary Unnecessary

Risk Insurance Costs More Expensive Less Expensive

Foundation Costs More Expensive Less Expensive

OIT VERSUS GIT — CONSTRUCTIONOIT VERSUS GIT — PRESSURE RISE TABLE

www.toshiba.com/td

1 - 8 0 0 - 2 3 1 - 1 4 1 2

TOSHIBA TRANSMISSION & DISTRIBUTION DIVISION:• Transformers• Surge Arresters • Switch Gear• Control Gear• Motor Controllers• Photovoltaic Systems• Battery Energy Storage• PV Inverter

© 2013 Toshiba International Corporation • Transmission & Distribution Systems Division • 13131 West Little York Road • Houston, Texas 77041 USA • Tel +713-466-0277 • Rev. 130104

TOSHIBA — A NAME YOU CAN RELY ON

Toshiba is a world leader in the supply of integrated solutions for energy transmission and distribution. As one of the world’s largest manufacturers of state-of-the-art transmission and distribution equipment, we have provided highly reliable and innovative products to the global market for over a century. Our product offering meets the market demand for larger capacity, compact design, and environmentally friendly solutions that produce impressive efficiency ratings and excellent results.

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