low voltage dry-type distribution transformers, the responsibility has been placed on the transformer manufacturers to comply or face civil penalties. This will ensure that all new and replacement transformers will meet the new ef ciency requirements by removing the option of using a lower ef ciency unit.The Act requires Distribution Transformers manufactured after January 1, 2007 to meet speci c energy ef ciency requirements. The requirements are based on a speci cation developed by the National Electrical Manufacturers Association (NEMA) with assistance from transformer manufacturers and the...

Low Temperature Rise Transformers Transformers designed to limit the temperature rise of the core and coil assembly to either 80C or 115аC above a 40C ambient. Reduction in temperature rise increases reliability. K-Factor Transformers Transformers designed to withstand the electrical anoma-lies associated with solid state equipment and DC power supplies (ex clud ing SCR variable speed motor drives). Copper Wound Transformers Hevi-Duty offers a selection of general purpose transform-ers with copper windings. Hevi-Duty is pleased to offer the following family of transformers that meet the strict...

Our online Transformer Product Selector is available at www.solaheviduty.com to help select the appropriate transformer. Enter your electrical re quire ments and hit the SubmitӔ button. Any matching trans form ers will list with links to exact speci cations. Contact Technical Services at (800) 377-4384 if you need any assistance selecting the right transformer for your needs. Hevi-Duty offers custom transformers that are quoted upon request. Selection Steps kVA (1) =Volts x Amps1000 kVA (3ؘ) =Volts x Amps x 1.7321000 Use the following steps below to manually select a trans form er. > A. Find...

Secondary Fuse Recommendations Secondary VoltageV > OUT 24110115120220230240VA > Secondary Time Delay Dual Element Slow-Blow Fuse 50 > 3.20.750.60.60.30.30.3 75 > 51.125110.50.50.5 100 > 6.251.51.41.250.750.60.6 150 > 102.25221.1311 200 > 1232.82.51.51.41.25 250 > 153.53.53.21.81.81.6 300 > 204.5442.2522 350 > 20554.52.52.52.25 500 > 307.576.253.53.53.2 750 > 401010105.655 1000 > 121212776.25 1500 > 17.517.517.5101010 2000 > 252525121212 3000 > 35353517.517.517.5 5000 > 606060303030 7500 > 909080454540 10K > 125110110606060 15K > 175175175909080 25K > 300300300150150150 37.5K > 400200 50K > 600300...

Hevi-Duty 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 operating 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 de nitely mean higher reliability. The extra bene t is being able to operate either of these trans form ers as a 150C rise unit and have an over load capability of 15-30% without compromising normal life expectancy (See Figure 2).Low temperature...

Electrical Connections and Design Style 240 x 480 Volt Primary, 120/240 Volt Sec ond ary Taps: 2, 2 > 480 Volt Primary, 208Y/120 Volt Sec ond ary Taps: 2, 2 480 Volt Primary, 240 W/120 CT Volt Sec ond ary Taps: 2, 2 % FCAN; 4, 2 ݽ % FCBN % FCAN; 4, 2 ݽ % FCBN > 480 Volt Primary 480Y/277 Volt Secondary Taps: 2, 2% FCAN; 4, 2ݽ% FCBN

Enclosures > Speci cation Guide Transformer enclosures shall be constructed of heavy gauge sheet steel and coated with a grey powder paint nish (ANSI 61). Ventilated transformer enclosures shall be UL/NEMA Type 1 rated and UL/NEMA Type 3R rated for outdoor use with the addition of a weather shield. This information must be listed on the transformer name plate.Օ Maximum transformer enclosure temperature will not exceed 65C rise above a 40аC ambient under full load. Transformers must have vibration isolators located between the core and coil assembly and the transformer enclosure to reduce audible...

Current that reverses direction in response to voltage that is changing polarity. Department of Energy program promoting energy ef cient appliances and apparatus. > Decrease in signal voltage or power. A means of accelerating heat dissipation to lower the temperature rise of an electrical device. > A marking that shows the product meets the fundamental safety, health, environmental and consumer protection requirements of the European Community. > Glossary of Terms Cycles per second. > The distortion of the AC waveform due to the addition of sine waves of different frequencies being added to the...

Glossary of Terms Thermal Protection UL Recognized > An internal safeguard circuit that shuts down the unit in the event of excess internal temperatures. Designation given to components that when used properly in an end product are deemed to be safe. THD (Total Harmonic Distortion) UL Listed > The ratio of the harmonic content to the fundamental frequency expressed as a percent of the fundamental. Designation given to products ready for end use. VA (Voltamp) Transformer > A measure of power. 1000 VA = 1 kVA. An electrical device that changes AC voltage from one level to another. UL (Underwriters...

Notes Technical Services: (800) 377-4384 >

Sola/Hevi-Duty is our premium line of industrial power quality solutions under the EGS Electrical Group family of brands. EGS Electrical Group is a worldwide manufacturer of electrical products for virtually every type of environment. For more than 150 years, our brands have been providing a rich tradition of long-term, practical, high-quality solutions. Distributors, contractors, engineers, electricians and site maintenance professionals around the world trust EGS brands to make electrical installa- tions safer, more productive, and more reliable.EGS is organized into three focused businesses...