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Triad autotransformers are single winding transformers in which the primary coil is a fraction of the entire winding for voltage step-up or the secondary coil is a fraction of the entire winding for voltage step-down. In ordinary double wound power transformers, the primary and secondary are isolated and all the power is transferred by induction. In autotransformers, part of the power is transferred conductively through the windings. Triad autotransformers come in a variety of configurations, case types and output watts (VA) ratings in excess of 2,000 watts. A universal isolation/autotransformer/voltage control model is available with up to a 4,000 output watts rating when operated as an autotransformer.
Unit of Measure

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Specifications

Output Wattage (VA) Rating

 N/A 150 W

Primary Voltage

 N/A 277 V

Primary Frequency

 N/A 60 Hz

Secondary Voltage (±5%)

 N/A 115 V

Secondary RMS Current

 N/A 1.30 A

Case Type

 N/A U

Connections

 N/A Leads

Height (H)

 N/A 2 13/16 in

Width (W)

 N/A 3 3/8 in

Depth (D)

 N/A 2 1/4 in

Mounting Width

 N/A 2 13/16 in

Mounting Depth

 N/A 2 in

Mounting Hole Size

 N/A 13/64 x 3/8 in

Weight

 N/A 2.90 lb

Technical Notes

Technical Notes

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  1. Output wattage (VA) ratings 50 to 2,000 W.
  2. Wide selection of case types, including 6' line cords, plugs, sockets and lugs.
  3. All transformers are 50/60 Hz line frequency, except as noted.
  4. Hi-pot tested at 1,500 VRMS.