Low Temperature Rise Transformers0 pages

"6 Ventilated Distribution Transformers nn

Low Temperature Rise

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SolaHD low temperature rise transformers feature a 220C insulation system and temperature rise of only 80аC or 115C under full nameplate load. The result is 13-21% lower operat-
ing losses than conventional 150аC rise units. Reduction in temperature rise increases reliability.The 35C thermal reserve on 115аC rise units and 70C reserve on 80аC rise units definitely mean higher reliability. The extra benefit is being able to operate either of these transformers as a 150C rise unit and have a short term overload capacity of 15-30% without compromising normal life expectancy (See Figure 2).Low temperature rise transformers are designed for any criti-cal application requiring extra overload capability, lower than average total losses and/or cooler operating temperatures. All are available with either a 115аC or 80C thermal rise and a Class 220аC insulation system. Accessories and Optional Design Styles Wall mounting brackets (500 lbs maximum) (Item WB1C)Օ Weather Shields (UL-3R)*
Stainless Steel Enclosures
Օ Totally enclosed non-ventilated designs (TENV) (Non UL)
Open core and coil designs (UL Recognized)Օ Copper Wound designs Compliant to NEMA TP-1 standards

Listed >
E25872

nn* Not all optional designs are UL listed. Contact Technical Services. Figure 2 nn

Selection Tables: Low Temperature Rise, Single Phase, 80

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C Rise

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Group 1: 240 x 480 Volt Primary, 120/240 Secondary, 60 Hz, 80

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C Rise

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E25872 kVACatalog Number 80հC RiseNEMA 3R Weather Shield*Height (inch)Width (inch)Depth (inch)Approx. Ship Weight (lbs)DesignStyle**Elec Conn**Primary AmpsSecondary Amps 15 ES5HB15SWS-15 2816162651162.5/31.3125/62.5 25 ES5HB25SWS-17 31181834011104/52.1208/104 37.5 ES5HB37SWS-17 31181842511156/78313/156 50 ES5HB50SWS-09 44232165511208/104416/208 75 ES5HB75SWS-09 44232175011313/156625/313 100 ES5HB100SWS-16 46262498011417/208833/417 >

nnNotes: * Weather shields (set of two) must be ordered separately.**Design Style and Electrical Connections can be found on pages 204-205. nn

Visit our website at www.solaheviduty.com or contact

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Technical Services at (800) 377-4384 with any questions.

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