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Auto-Transformers Allow North American Appliances to be Used Worldwide

Tue, 08/30/2011 - 12:39pm
auto transformersFoster Transformer introduced a new line of Auto-Transformers or autoformers that use a single non-isolated winding to step up or step down the available line voltage to match the requirements of the load. With an integral enclosure to facilitate hook-up, they are used to adapt equipment manufactured in one country to operate in another with different line voltage. The new line of Foster 1500 VA autoformers is specifically designed to allow North American appliances configured to operate from a 120-V source to be operated virtually anywhere in the world. The autoformers are appropriate for virtually all types of equipment including office automation, medical and dental, commercial appliances, vending and other OEM equipment.

Foster Autoformers are UL/C-UL recognized (file E19598), and TUV certified to EN60950-1 (Certificate R72050845). They have output rated at 115V at 1500 VA. Input voltage taps of 100V, 115V, 127V, 200V, 220V, 230V, and 240V at 50/60 Hz are standard. They can be wired in parallel for increased capacity. UL recognized Class 180 (H) insulation is used – optional resettable thermal overload protection is also available to protect against overheating.

Autoformers forego the electrical isolation provided by a multi-winding transformer in exchange for smaller size, lower cost, improved efficiency and tighter voltage regulation. This is accomplished because only a portion of the power is being "transformed." The use of non-isolated transformers is acceptable in equipment which is being adapted to differing line voltages because the output is supplying equipment that would otherwise be connected directly to the line.

Foster Transformers
800-963-9799, www.foster-transformer.com
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