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We manufacture TP-1 transformers in General Purpose, Drive Isolation, Low Temperature rise and K-Factor. The minimum efficiency is 97% and increase per kva size. All of our units are shielded and the enclosures are standard NEMA 3R which means that no weather shield is required when the transformer is located outside.
Exceptions to the DOE EPACT are auto transformers, testing transformers, non-ventilated transformers, transformers with taps at least 20% more than the lowest voltage, special impedance transformers, grounding transformers, drive isolation transformers (not excluded in Canada), rectifier transformers, welding transformers and machine tool transformers.
All transformer utilize high grade silicon steel. 41 & 43 series are designed within a 220 degree C and are aluminum wound. 42 & 44 series are designed in a 200 degree C system and are copper wound.