10 KVA, 1-Phase, 240 x 480 Primary Volts - 120/240 Secondary Volts, NEMA 3R, General Purpose Transformer, Sand and Resin Encapsulated, 115 Degree C, Aluminum Windings, 60 Hz operation (50/60 Hz optional), Frame Size: FR179. ***Reverse Feed Capable and for use with 3-Phase Source by connecting primary to any two wires of a 3-Phase …Nov 3, 2022 · A step up transformer is an electrical device that converts low voltage (LV) and high current input from the primary portion of the device to high voltage (HV) and low current output from the secondary section. A step down transformer performs the opposite purpose. A step up transformer is a crucial component of any electrical system. When it comes to decorating your space, few things can transform a room like a well-chosen rug. The right rug can tie together all the elements of your design and create a cozy and inviting atmosphere. However, selecting the perfect rug siz...1500 kVA Pad Mount Transformer - 12470 V Delta Primary- 480Y/277 Secondary - Oil CooledDec 7, 2010 · 1 phase transformers are available to step up voltage from 240 to 277 volts. Sola/Heavy duty HS12F series for example. If 480 v, 3 phase is required for motors an inverter will be needed. The question does not indicate what 480/277 is being used for. If 277 volt is the only voltage needed, usually lighting, then an inverter is not needed. 1 Answer. Yes and no. Yes you can use a transformer in reverse. The no part has to do with the transformer's design. Secondary or output windings are low impedance to reduce losses and increase efficiency. This is a problem when wiring it in reverse as the low impedance will cause a large inrush current when powering up the …The formula for both three-phase and single phase transformers is given below. 3 phase transformer current is equal to: I3ph = P3ph / (√3 × V3ph) Where: I3ph [kA] = the current flowing through the windings. P3ph [kVA] = the rated 3 phase power of the transformer. V3ph [kV] = the 3 phase voltage at the windings.240 x 480 winding can be connected for either 240 (parallel) or 480 (series). A 120/240 winding can be connected for either 120 (parallel) or 240 (series), or 240 with a 120 mid-point. Design Guide DG009001EN Effective February 2020 19 .1-3 Dry-Type Distribution Transformers General Purpose General Purpose Ventilated Transformers EATON www ...The 600 kVA transformer dimensions are 70.000 inches in height. The 600 kVA transformer weighs 5740 lbs. Moreover, its depth is 63.00 inches with a temperature rating of 65 celsius, an impedance of 4.3, and a secondary voltage of 208/120. Different international standards and types of 600 kVA transformers will also be different.IMHO the _right_ transformer for the job would be a 240V delta to 480/277V step up transformer, with the secondary grounded at the neutral point. Such a transformer will have taps on the 240V side so that you can adjust for incoming voltage, will have a neutral point to ground on the secondary side, and will be designed to minimize 'inrush ...are 480 and 240 Volts; standard load voltages are 480, 380, 240, 208 and 120 volts. (However, other voltages as per customer's specifications can be made ... Auto transformers with special voltages up to 4160V can be fabricated upon customer's request. SERIES AND MULTIPLE CONNECTIONS (SINGLE PHASE TRANSFORMERS ONLY) …These Three Phase transformers offer consistent, smooth voltage transformation at 480VAC input. Transformers 15kVA and higher that meet DOE 2016 legislation will help lower operating costs, lower cost of ownership, increase profitability, and reduce overall greenhouse gas emissions. 15 KVA Federal Pacific S2T15 Dry Type Transformer 240/480V Pri 120/240V Sec 1 PH. $475.00. ... NEW FPE 3 Phase Step Up Transformer 208 to 480Y/277 T20LH42-15 15 KVA ... Transformer, 25 kVA. 25 kVA; Step down 480V to 120/240V 1-phase; Power your job site trailer and other 480V loads from the same power source; Lifting provisions and forklift pockets for portability; Power distribution equipment available to complete your temporary power system; Uses: Ideal to power worksite trailers and 480V loads from the same ...Transformers, UPS & Power Supplies; ... Roll over image to zoom. Product Image Feedback. Compare. ACME ELECTRIC Single Phase Transformer: 240V AC/480V AC, 120V AC/240V AC, Wall, Copper, Single, Gray ... Transformer Step Down. Winding Material - Transformer Copper. Hz - Electrical 60 Hz. Temp. RiseE. 240/480 Volt Primary Single Phase Isolation Transformers. TEMCo Single Phase Isolation Transformers are 50/60 Hz rated and come in a NEMA 3R enclosure for indoor use as well as outdoor protection against rain and sleet. Our transformers are built to last, guaranteed. That's why we back these with a decade long warranty.75 kVA Transformer - 208V Delta Primary Voltage - 480V Delta Secondary Voltage - NEMA 3R480-240 Volt 3 Phase Transformers. $ 984.00 – $ 3,774.00. • Energy Efficient 3 Phase Step Down Transformer (480 to 240) • UL & CUL Listed / CSA Approved. • Delta Primary to Delta Secondary. • Conduit knockouts for easy installation. • Vibration Dampening System. • Rugged Enclosures. • UL Listed 130 (3-9kVA) & 220 (15-75kVA ... Transformers increase voltage, decreasing current in power systems. Lower I means less power loss due to I2R losses in lines, cables, transformers, etc Generator Step up transformer I V Step down transformer V I Three phase transformers 3 single-phase units can form 3-phase bank or Single three-phase transformer (3 separate cores in a single tank)Transformer capacity is rated in KVA (kilo-volt-amperes). The load voltage and load amps must be known to calculate KVA rating. * NOTE: We do not recommend loading a transformer above 80% of its KVA rating. When the KVA rating has been calculated, divide that number by 0.8 to get the minimum KVA rating needed. All values should be …45KVA 208-480/277 3 phase Step Up 75KVA 240-480Y/277 3 phase Step Up 150KVA 208-480Y/277 3 phase Step Up 150KVA 240D-480/277Y 3 phase Step Up 225KVA 208-480Y/277 Y 3 phase Step Up 300KVA 208V-480V 3 phase Step Up 75KVA, 480D to 480Y/277V, 3 Phase 112.5KVA, 480 Delta to 480Y/277V, 3 P hase UPS Sizes available: UPS 1000VAMay 6, 2017 · I asked about bonding the transformer over at the Mike Holt forums, and one of the moderators (Don in Illinois) said that since it's a separately derived system it needs a grounding electrode: 24 to 48 step up transformer questions - Page 2 Don's got over 23,000 posts there, so I feel like I should seriously consider what he says. 480-240 Volt 3 Phase Transformers Primary Voltage : 480 Delta Secondary Voltage: 240 Delta Winding Material: Aluminum Transformer Type: Isolation Frequency : 60 Phase: 3 *Also available as a 240 Volt Primary stepping up to a 480 Volt Secondary.SKU: ATO-T-SG30KVA. Quick View. $6,492.06. SKU: ATO-T-SG50KVA. Quick View. Add to cart. 40 kVA isolation transformer is designed to step down 3 phase voltage 480V to 240V or step up 240V to 480V, aluminium/copper winding material, and widely used in various power supply sites with frequency 50Hz or 60Hz. Transformers 15kVA and higher that meet DOE 2016 legislation will help lower operating costs, lower cost of ownership, increase profitability, and reduce overall greenhouse gas emissions. In addition to energy efficient transformers and general application three phase transformers, you can choose from the following additional types of transformers: built to order step up transformers. contact us at 714 624 4740. (714) 624-4740 ... step up transformer, 1.5 kva primary 120 vac, secondary 230 vac p/n 19255n. step up transformer, 2 kva primary 240 vac, secondary 960 vac p/n 19033. step up transformer, 2 kva primary 100 vac, secondary ... step up transformer, 4 kva primary 480 vac, …This transformer is designed to convert 3-phase 480v to 3-phase 240v to run equipment such as panels, motors, CNC machines, welders, conveyor systems, pumps, printing equipment, fabrication tools, cryptocurrency miners, datacenter equipment, and other business machines.. Primary Voltage: 480 Delta Secondary Voltage: 240 Delta / 120 …The JMS transformers can be supplied as open style or in enclosures to IP23 through to IP65. Some applications for our three phase transformers are for isolation, step up, step down, Dc transformers and 3ph control transformers. As a transformer manufacturer we can design and build custom and bespoke 3 phase transformers to your exact …5 KVA, 1-Phase, 240 x 480 Primary Volts - 120/240 Secondary Volts, NEMA 3R, General Purpose Transformer, Sand and Resin Encapsulated, 115 Degree C, Aluminum Windings, 60 Hz operation (50/60 Hz optional), Frame Size: FR177. ***Reverse Feed Capable and for use with 3-Phase Source by connecting primary to any two wires of a 3-Phase System***. View ... Jul 14, 2017 · Usually, the primary windings are the high voltage windings, but this is not always the case. A good example of an exception is a generator step-up transformer. Go back to contents ↑. 4. Wye–Delta. The wye–delta transformer shown in Figure 9 is sometimes used to provide a neutral on a three-wire system but also can serve load from its ... I have a Hardinge UM milling machine with a 480V-3PH motor. I made a dedicated phase converter for it. The converter has a step up 1PH transformer to get the 480V from the 240V. This connects to 1 1/2HP 240/480 motor. Capacitors are used for starting and balance of the third leg. It operates with an on/off switch.#1 I just picked up a sweet LeBLOND Regal lathe that came with what looks like the original 3/4 HP 3-phase 480/830v motor, but my home garage/workshop has 240 …Filters · Three Phase Transformer, Input 480VAC Delta · Three Phase Transformer, Input 208VAC Delta · Three Phase Transformer, Input 240VAC Delta · Three Phase ...have 240 volts and the output would be 480 volts. Standard transformers rated 3 KVA and larger can be used for either step-up or step-down service. Transformers rated 2 KVA and below have compensated windings and should not be used in reverse feed applications. Autotransformers Standard transformers are referred to as insulating transformers ... I don't seem to have much trouble finding a 75kva 480 to 240/120 transformer. ... In order to re-feed the existing panels in the building we have installed the 75kva step down transformer ... the same. Like on my passports, it says to run at 7.1 v (on dial) and 80 on wire speed. Well you will need to click it up 1 to 7.2 (only 3 ...The 600 kVA transformer dimensions are 70.000 inches in height. The 600 kVA transformer weighs 5740 lbs. Moreover, its depth is 63.00 inches with a temperature rating of 65 celsius, an impedance of 4.3, and a secondary voltage of 208/120. Different international standards and types of 600 kVA transformers will also be different.If a transformer needs to step-up 240 volts to 480 volts, and you need a maximum current capacity of 40 amps, you must first calculate the number of amps needed ...As such the transformer most likely is a 480v delta to 240 delta which can be easily feed in either direction. The only issue is that the taps on a common transformer built as a step down transformer will be built with the taps on the HV windings because they are on the outside with the LV winding on the inside next to the .Do you have old, faded photos that hold precious memories? Are you looking for a quick and easy way to bring them back to life? Look no further than the Remini Photo Editor. To begin, download and install the Remini Photo Editor from your a...#1 I just picked up a sweet LeBLOND Regal lathe that came with what looks like the original 3/4 HP 3-phase 480/830v motor, but my home garage/workshop has 240 …Also See Dry-Type // GSU (Step-up) // Oil Filled // Substation. Create Alert. Have One to Sell? 60 Hz Three Phase Transformers. ... Hammond Power Solutions HPS Fortress Commercial Potted Distribution Transformer. 240V x 480V. Serial 373152. Part C1F003LES. 3 KVA. 60 Hz. NEMA-3R. McLean ...more. View Details Contact Seller …Transformer Size Calculator. When sizing a transformer, you need to know the kilovolt-amps (KVA) that your machine requires. This tool will allow you calculate the KVA that you need. This tool only evaluates common voltages for North America (ie. 24v, 120v, 208v, 240v, 480v, and 600v). If you have a Eurpoean voltage or something else that is ...Powertran 75KVA Transformer 480 Delta 240/120 Delta Cat# 3PTN43-75K. or Best Offer. MagneTek 3-Phase Dry Type General Purpose Transformer 75kVA 480V 480Y/277 4.4%. $293.58 shipping. ... GE 9T23B3874 3 Phase 75 KVA Dry Transformer 480-208y/120V . Cutler Hammer 75KVA Dry Type Transformer Cat# V48M28T75 Pri480D Sec 208Y/120V.480-240 Volt 3 Phase Transformers Primary Voltage : 480 Delta Secondary Voltage: 240 Delta Winding Material: Aluminum Transformer Type: Isolation Frequency : 60 Phase: 3 *Also available as a 240 Volt Primary stepping up to a 480 Volt Secondary. Siemens MT0150A Industrial Power Transformer, Domestic, 240 X 480, 230 X 460, 220 X 440 Primary Volts 50/60Hz, 120/115/110 Secondary Volts, 150VA Rating , Black. 3.3 out ... T Series 2000 Watt Voltage Converter Transformer - Step Up/Down - 110v to 220v / 220v to 110v Power Converter - Circuit Breaker Protection, CE Certified [3-Years Warranty ...240 To 480 Transformer All Auction Buy It Now 471 Results Secondary Voltage Rating (AC) Primary Voltage Rating (AC) Power Rating Number of Phases Turns Ratio Condition Price Buying Format All Filters Square D 1S1F Transformer - 1 Phase - 240/480V to 120/240V - 1KVA - NEMA 3R $109.99 or Best Offerdo i go up 2 sizes as a rule of thumb . #2-do i size single phase transformer to the size of the 50 hp motor (65 amps x 1.73 =112.45 amps ) 240 x 112.45/1000 =27.12 kva transformer or to the hp rating of the vfd.(i think i size to the vfd rated hp)thats 2 sizes bigger .#3-if i fuse transformer at 125% on primary side would i have to install ocp …5 KVA, 1-Phase, 240 x 480 Primary Volts - 120/240 Secondary Volts, NEMA 3R, General Purpose Transformer, Sand and Resin Encapsulated, 115 Degree C, Aluminum Windings, 60 Hz operation (50/60 Hz optional), Frame Size: FR177. ***Reverse Feed Capable and for use with 3-Phase Source by connecting primary to any two wires of a 3-Phase System***, Cat #: S20K11S05N, Mfr: Eaton20 kVA three phase 220V/380V/480V static (solid state) frequency converter, adjustable output voltage and frequency, easy converting 60Hz to 50Hz and 3 phase to 1 phase (vice versa). -When the output is 400Hz, the load capacity can only reach 50% of the rated capacity. -When the output is ≤120Hz, the load capacity can reach 100% of the rated ...No. The total current from the 50 KVA transformers should not exceed the original mains current of 200A.Transformer capacity is rated in KVA (kilo-volt-amperes). The load voltage and load amps must be known to calculate KVA rating. * NOTE: We do not recommend loading a transformer above 80% of its KVA rating. When the KVA rating has been calculated, divide that number by 0.8 to get the minimum KVA rating needed. All values should be …The rating on the motor is 24.7 amp at 480v and there is a little 1hp hydraulic pump for the tracer but that is about it for load. Not a lot of electrical stuff on this machine. TLDR: Any recommendations on what transformer to get to step 3 phase 240v to 480v with a 25 amp load (20hp motor). Thanks guys.IMHO the _right_ transformer for the job would be a 240V delta to 480/277V step up transformer, with the secondary grounded at the neutral point. Such a …Get the best deals for 208 to 480 step up transformer at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. ... 112.5Kva Dry Type Transformer 240-480Y/277V Step-Up 3 Phase. Opens in a new window or tab. Pre-Owned. ironman-66 (705) 100%. or Best Offer. Free local pickup.SKU: ATO-T-SG30KVA. Quick View. $6,492.06. SKU: ATO-T-SG50KVA. Quick View. Add to cart. 40 kVA isolation transformer is designed to step down 3 phase voltage 480V to 240V or step up 240V to 480V, aluminium/copper winding material, and widely used in various power supply sites with frequency 50Hz or 60Hz. 45KVA 208-480/277 3 phase Step Up 75KVA 240-480Y/277 3 phase Step Up 150KVA 208-480Y/277 3 phase Step Up 150KVA 240D-480/277Y 3 phase Step Up 225KVA 208-480Y/277 Y 3 phase Step Up 300KVA 208V-480V 3 phase Step Up 75KVA, 480D to 480Y/277V, 3 Phase 112.5KVA, 480 Delta to 480Y/277V, 3 P hase UPS Sizes available: UPS 1000VA 1500 kVA Pad Mount Transformer - 12470 V Delta Primary- 480Y/277 Secondary - Oil CooledFigure 1. The turns ratio determines whether a transformer is a step-up or step-down transformer . Note. Most motor control circuits are powered from step-down transformers that reduce the voltage to the control circuit. A step-down transformer reduces the voltage to the control circuit to a level of 24 V or 12 V, as needed.Edit to add: I understand that most rotary phase converters only add a phase, and I would also need a transformer to step up the output to 480 Volts as well. ... If you use a 240 volt phase converter and a 240∆ to 480∆ transformer, it won't matter which two legs the controls are on. It will also balance the voltage better.In today’s competitive business landscape, finding and connecting with potential customers is crucial for the success of any company. Traditional prospecting methods can be time-consuming and often yield limited results.Powerful Conversions! Call today 877.545.2926 Transformers Home Product Information Transformers Transformers North America Phase Converter Co. offers a full line of electrical single and three phase transformers. Listed below are the most common voltage combinations.A step-up transformer is a transformer with the source connected to the winding with fewer turns and the load connected to the winding that has a larger number of turns. ... A transformer with a 2:1 ratio with a 240 V primary and a 120 V secondary should not be connected to a 480 V line to build a 240 V secondary.Step-up transformer to convert 3-phase 240V Delta to 3-phase 480Y/277V. Perfect for panels, motors, CNC machines, welders, conveyor systems, pumps, and more.GENERAL ELECTRIC DRY TYPE TRANSFORMERS UP TO 600 VOLTS. 225 KVA GENERAL ELECTRIC (Cat #: 9T23B3887) ... KVA 225, Primary Voltage 480, Secondary Voltage 240, +2,-4 2.5% Taps, 150 ºC Temp Rating, Impedance Pct., 1160 Lbs. Weight, 48.00 Inches Height, 28.94 Inches Depth, Catalog Number 9T23B3887: Reconditioned …Redirecting to https://store.maddoxtransformer.com/collections/all 480-240 Volt 3 Phase Transformers. $ 984.00 – $ 3,774.00. • Energy Efficient 3 Phase Step Down Transformer (480 to 240) • UL & CUL Listed / CSA Approved. • Delta Primary to Delta Secondary. • Conduit knockouts for easy installation. • Vibration Dampening System. • Rugged Enclosures. • UL Listed 130 (3-9kVA) & 220 (15-75kVA ... For example, if you have 230/240 volt A/C power available, these VFD's and digital phase converters step up the input and produce 460/480 volt A/C output without requiring an additional transformer. For an AC motor of a given horsepower, increasing the operating voltage of the motor results in a decrease in the full load amperage.Generally, if the transformer is mentioned by 11kV/415V means, it is called step-down transformer, the input will be given as 11kV and the output will be connected to 415V. At the same time, the transformer is mentioned by 22kV/220kV means, it is called a step-up transformer. The input will be 22kV and the output will be 220kV.Get the best deals on Step-up 3 Phases Electrical Transformers when you shop the largest online selection at eBay.com. Free shipping on many items ... New Listing Westinghouse DT-3 45KVA Transformer 480-208Y/120 V. $756.00. Was: $840.00. ... HEVI-DUTY HS1F500A General Purpose Transformer 240/480V - 120/240V. $65.00. …3-Phase Delta Buck/Boost Step-Up Transformer - 480V Primary - 575V Secondary - 129 Amps - 50/60HzB. Choose a `SV46` Transformer of next larger standard size above the VA obtained in A. Example: if load is 11 amperes, multiply 11 x 32 = 352VA, choose catalog number 500SV46B C. Connect using wiring diagram #4 in Buck & Boost literature. 2. If load is three phase 3-wire: A. Use same procedure as in single phase except two …Industrial Control Transformers, Primary Voltage of 240/480V, Secondary Voltage 120/240 with Power Rating of 25VA to 1500VA. (630) 628-9999 ... Step down control transformer from 240 volts or 480 volts to 120 or 240 …Transformers, UPS & Power Supplies; ... Roll over image to zoom. Product Image Feedback. Compare. ACME ELECTRIC Single Phase Transformer: 240V AC/480V AC, 120V AC/240V AC, Wall, Copper, Single, Gray ... Transformer Step Down. Winding Material - Transformer Copper. Hz - Electrical 60 Hz. Temp. Risehave 240 volts and the output would be 480 volts. Standard transformers rated 3 KVA and larger can be used for either step-up or step-down service. Transformers rated 2 KVA and below have compensated windings and should not be used in reverse feed applications. Autotransformers Standard transformers are referred to as insulating transformers ...ElectronicsHub - Tech Reviews | Guides & How-to | Latest TrendsAug 8, 2008 · IMHO the _right_ transformer for the job would be a 240V delta to 480/277V step up transformer, with the secondary grounded at the neutral point. Such a transformer will have taps on the 240V side so that you can adjust for incoming voltage, will have a neutral point to ground on the secondary side, and will be designed to minimize 'inrush ... Outer windings 12470v. Step-down transformers are occasionally used as a step-up transformer by “reverse feeding” or “back feeding” the transformer. Reverse feeding is simply a matter of having the power supply enter at the low voltage windings. Given the greater availability of step-down transformers, reverse feeding is a fairly common ... A pair of transformers; one to step up the source voltage, ... Even running 240 volts and then a 120/240 transformer at load end is worth consideration. @ 2000 VA that is only 8.3 amps, would need larger conductor than if 480 or 600 V but only need one transformer instead of two.Dec 7, 2010 · 1 phase transformers are available to step up voltage from 240 to 277 volts. Sola/Heavy duty HS12F series for example. If 480 v, 3 phase is required for motors an inverter will be needed. The question does not indicate what 480/277 is being used for. If 277 volt is the only voltage needed, usually lighting, then an inverter is not needed. Description: Features Used (with 150 Volt full scale A.C. voltmeters) to measure the voltage of 240, 480 or 600 VAC systems. Primary insulated for 4.0 KV rms test, suitable for L.V. switchgear and motor control use. 50/60 Hz. operation. Open construction - "Type H. Power Rating (VA): 0.0 to 8 VA.Brand: Romanoff Power: 208/240/480V DELTA 400/230V Application: Step-up 220V to 380/480V For use with: Yasui K2 NEXT, RBF 37+, RBF 21+ Amp: 30Step-up transformer to convert 3-phase 240V Delta to 3-phase 480Y/277V. Perfect for panels, motors, CNC machines, welders, conveyor systems, pumps, and more. This …Redirecting to https://store.maddoxtransformer.com/collections/allSeven Star ST-3000 Watt 110/-220 Volt Step Up Down Transformer Converter 300W. $24.95. $24.25 shipping. 2 watching. Autotransformer 75 kVA • Three Phase • Primary: 575 Volt • Secondary: 480 Volt. Conductor: Copper. • Frequency 60 Hz. Full Specification. Optional Features. Three phase Autotransformer RC75J1-H has common primary-secondary windings which are not insulated from each other, offers no interference or disturbance isolation between primary ...This transformer is designed to convert 3-phase 240v to 3-phase 480 Y 277 to run equipment such as panels, motors, CNC machines, welders, conveyor systems, pumps, printing equipment, fabrication tools, and other business machines. Not sure what to buy? Find out more about how to buy the right transformer. Primary Voltage 240 Delta Secondary Voltage 1-Phase Buck/Boost Step-Up Transformer - 240V Primary - 277V Secondary - 46.88 Amps - 50/60HzSome control power transformers are built with multiple primary windings, to facilitate connection to either a 480 volt or 240 volt AC power source: Such ...Decorating for Halloween doesn't have to be challenging. In fact, transforming your home into a haunted house ca, 800 VA Isolation Transformer, Single Phase, 110V to, Jun 8, 2021 · Figure 1. The turns ratio determines whether a transforme, Step-Up/Step-Down. AC to AC Transformers. Improve the efficiency of your equipment— wire , For example, if you have 230/240 volt A/C power available, these VFD's and digi, Primary Voltage: 240 Delta. Secondary Voltage: 480 Y 277. Transformer Specifications: 60 Hz Frequenc, I looked at step up transformers but I don't think those will be able to convert my singl, A common type of transformer to handle this type of job is a step-down, 75 kVA Transformer - 208V Delta Primary Voltage - 480V Delta Se, May 9, 2017 · Both have VFDs driving their spindles, The Transformer Authority PIONEER TRANSFORMERS: Why us?, This transformer is designed to convert 3-phase 240v to 3-ph, The 600 kVA transformer dimensions are 70.000 inches in h, 240 To 480 Transformer All Auction Buy It Now 471 Re, However, if you want a step up transformer 3 phase 240 to 48, This transformer is used as a step up transformer (240 to 480). , Transformers - Step up 1 Phase Autotransformer 120V 208V 240V to , Winding Turns: Step-Up Transformer, Step-Down Transforme.