# 75 Kva Transformer Amps

KVA = Kilovoltamp size of transformer. Oct 29, 2009. 60 AMP WELDING RECPT SEC: 208Y/120V COMBO PANEL W/ MCB. kVA Catalog Number Group 1 Rolled Steel Catalog Number Group 2 Stainless Steel 3 Height in (mm) Width in (mm) Depth in (mm) Approx. 25 in tall - Weight: 15 lb. 20 cal/cm2 for each electrical cycle or 1/60th of a second. For an examplelet's use Load voltage = 480 volts, Load current, = 80 Amps and Line voltage = 208 volts. Used Sorgel 34350-16412-007 Insulated Transformer with: kVA: 75 60 Hertz High voltage: 480Y/277 High voltage amps: 90 Low voltage: 208 Low voltage amps: 208 GoHz HZ-50-3315 Three Phase Frequency Converter. These transformers come in 3 kVA, 6 kVA, 9 kVA, 15 kVA, 30 kVA, 45 kVA, and 75 kVA options. 38 Related Question Answers Found. How many amps will a 10 kva transformer handle? It depends on how many amps it was designed for. 5 kVA 480V delta primary to a 208Y/120V 3-phase wye secondary. 00 Quantity: 10250TA45 10250TA45 Product Details $20. One-Pieces, Overalls & Jum… Uniforms. The machines are always rated in watts. Dry Type Transformer. Solution: k = (Ph x V x A) / 1000. 00 Quantity: 225 Amp PRL-2 Panel. Three Phase AC - kW to amps. 00 Quantity: 225 Amp PRL-2 Panel 225 Amp PRL-2 Panel Product Details $600. 3 kVA-75 kVA 3 Phase Transformers: 480-208Y/120-Volt | NAPCco › See more all of the best education on www. com/p-73118-75-kva-transformer-power-distribution-480v-primary-120208y-secondary-cam-lok-input. 15 to 20% voltage dip during starting should normally be acceptable. 8 Conductor, Wire Cu 1/C #4 7STR, Insulated, Red 7 6. Enter the apparent power in kilovolt-amps (kVA), power factor (PF) from 0 to 1 with a 0. For example, a 75-kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be installed in a small industrial plant. Go to "How to size a transformer" on page 1. 732 1000 List ed Cer ti ﬁ ed Selection Steps A. 75 for four or more appliances. P (horsepower): H. And the maximum load capacity of the transformer can be calculated through this. Jacobson 75HP Jacobson 75HP DC Drive Motor. Current Transformer. IF Three Phase: Three wire source: Must use Open Delta. We are manufacturing Electrical Transformer from 25KVA – 5000 KVA. Line to Line voltage x 1. Or take a larger VA transformer:. , 250 MCM, aluminum. NEMA 3R & NEMA 3RX. The following kVA to Amps conversion calculator will convert the apparent power "S" (i. E-CART PTU W/ SOLID WHEELS. The machines are always rated in watts. VA=Volt-Ampere. 75 KVA Transformer Power Distribution - Three Phase 480V to Single Phase 120/240V - Nema 3R Part #: MPD-480-4X125A-75K-5X240-8X120 MADE IN THE USA This Larson Electronics 75KVA Power Distribution Substation has a 600 amp three phase 480 volt€main breaker panel and a 200 amp 120/240 main breaker panel. Transformer Size: 15 kVA 30 kVA 45 kVA 75 kVA 112. (a) Standard Reactances and Impedances for Ratings 500 KVA and below (for 60 cycle Transformers). The transformer kVA rating can be used to calculate amps. 3(A), protection on the primary side can be 300% of the rated current so, 23. Energy-efficient, floor mount transformers can step up or down from 600 volt to 120-240 volt. Secondary Voltage: 480Y/277. 55 37,207 26,882 167 120 240 2. This is the first 75 kVA I have done with the 480 connections up at the top like this. Three Phase Transformer. 66 fusoh020 0. The most common question here is 'How many amps is x kVA'. Base KVA: 2500 kVa. Sola Hevi-Duty E2H75S Transformer, Dry Type, 480 Delta - 208Y/120, 75 KVA, Shielded 75 KVA, Transformer, Dry Type, 3-Phase, 480 Delta Primary Volts - 208/120 Volt AC, Shielded, For Outdoor, Use Weather Shield WS30. Dimensions are listed in (L x W x H) Note: Transformer inventory levels can change quickly, for live inventory please call us! 888-743-6832. 5 15 125 54. 7% of closed delta system) You can better understand the above calculation with the circuit diagram given in. For any three-phase AC circuit, Current, I = 1000 x kW / (√3 x V L x P. 32 M: Electrical Rating Volts: Amps: Phase: Primary: 600: 75: 3: Secondary: 120/208: 75: 3: 75 kVA Package; Distribution: 100A 3W4P 25' long primary feed cable; 400A rated. Or take a larger VA transformer:. 5 kV Class 112. larsonelectronics. Dimensions are listed in (L x W x H) Note: Transformer inventory levels can change quickly, for live inventory please call us! 888-743-6832. 5 11,200 50 14,900 7,400 75 22,300 10,400 100 32,100 12,300. Line to Line voltage x 1. AMPS 208 Cooling Class"AA" Style No: 34349-17212-064 Polarity Subtractive Weight: 405LBS UL Certified This transformer was pulled from a working environment. Enter the apparent power in kilovolt-amps (kVA), power factor (PF) from 0 to 1 with a 0. Ericson EC2HSX43075W6CM3122 e-Cart PTU Series Power Transformer Unit, 600V, 3PH 75 KVA. The open-circuit test performed on the low-voltage side of the transformer yielded the following data: VOC = 13. One-Pieces, Overalls & Jum… Uniforms. These transformers come in 3 kVA, 6 kVA, 9 kVA, 15 kVA, 30 kVA, 45 kVA, and 75 kVA options. Primary Amps: 90. What is the division of load when the total load is 140 kVA, 80% power factor? Both transformer have the same voltage ratio. (K= 1,000) The full value in VA, 75,000 divided by 1. distribution transformer, dry type kva : phase : date code : freq. 98 fusoh021 1. Sola Energy efficient dry-type transformers 600 Volt Class, isolation type, single and three phase, 15 kVA through 500 kVA. or Best Offer. The AMP Mobile rotary phase converter is plug and play ready for a quick and cost offective installation. Clothing Sets. 732 ÷ 1000 TRANSFORMER FULL LOAD CURRENT RATINGS Three Phase 600V Class Fields containing " - " indicate the current value exceeds the capacity of some current-carrying components such as bushings, cables, bussing, etc. Go to "How to size a transformer" on page 1. 8 amps on the secondary side More energy efficient than standard transformers - uses 4. 1000kva =1000*0. 120-N3R 480D 3 Phase Energy Efficient Transformer from Larson Electronics is powerful reliable and designed with the environment in mind. This is a used dry type transformer for sale. To calculate full load current, use this formula: Single Phase 600V Class To calculate KVA, use this formula: KVA VOLTAGE KVA VOLTAGE. Fault Current (amperes) 120/240 volt single-phase. The Hatch LS12075EN-277 is designed to convert 277 volts line voltage to 120-volt AC. kVA capacity is reduced correspondingly. 4 MAX KVA Q216U3. 5 15 125 54. Electrician. They can also be used to isolate one system from another. I know the typical industry installation is to size the primary OCPD of a 75 KVA transformer at 125 amps and the Secondary at 300 amps. 240 x 60 x 1. pdf), Text File (. From the new panel, the power is supplied to the new floor mounted 75 kVA transformer which lowers the 277/480 V to 120/208 V. This means that amps are equal to the kVA times 1,000, divided by the voltage. Step down input 480V to output 208V; Input 90 amps to output 208 amps; Unit weight 640 lbs. larsonelectronics. Specifications: Buck transformer: 75 KVA, 3 PH, 50/60 Hz, P/N 18714B Input: 460 / 480 / 500 VAC, 94 Amps max; Output: 208 VAC, 208 Amps; Open core and coil …. Forklift pockets or lifting eyes included; Add this transformer to your cart now. I AC1Ø = Current / Amps 1 phase. LM-79 Testing for LED Street Lights. 00 75kVA n/a / 180 75 2-6 1490 535 [242. Let's say we have a transformer rated 1500 kVA with a secondary voltage of 480Y/277V, a primary voltage of 13. Acme Transformer Selection Table 2 - Full Load Current (A) Single-phase Circuits kVA 120V 277V 3 25 10. aspxClick to Subscribe: https://. 3-Phase kVA = Volts x Amps x 1. Multiple knockouts for easy installation. Eaton V48M28T7516 Transformer, Dry Type, TP-1, 480 x 208Y/120VAC, 3PH, 75 kVA, 75 KVA, 3-Phase, 480Δ Primary Volts - 208Y/120 Secondary Volts, NEMA 1, Energy Efficient, Energy Star labeled Transformer, Ventilated, 150 Degree C, Aluminum Windings, 60 Hz operation, Frame Size: FR942. Nov 10, 2017 · transformer size(kva) 75 24,000 100 32,100 167 46,400 250 57,900. 1 1000 kVA […]. Eaton V48M28T7516 Transformer, Dry Type, TP-1, 480 x 208Y/120VAC, 3PH, 75 kVA, 75 KVA, 3-Phase, 480Δ Primary Volts - 208Y/120 Secondary Volts, NEMA 1, Energy Efficient, Energy Star labeled Transformer, Ventilated, 150 Degree C, Aluminum Windings, 60 Hz operation, Frame Size: FR942. 1 Typical Transformer Impedances (Tables (a) and (b)) reprinted with permission from Electrical Transmission and Distribution Reference Book , ABB Power T&D Co. We keep this single-phase primary wave. KVA = Volts x Amps x 1. Maddox Transformer's dry-type transformers are an excellent choice for any commercial or industrial distribution system. The below-mentioned Transformer prices are valid from 01st April 2016. Step One: Single Phase or Three Phase Application. That result is 72 KVA. Length of service drop from transformer to building, Type and size of conductor, ie. When the KVA rating has been calculated, divide that number by 0. HIGH VOLTAGE: 480 MODEL: HT75A3K2SH : I174AC: General Electric 75KVA Transformers: KVA: 75 KVA PHASE: SINGLE LOW VOLTAGE: 120/440 HIGH VOLTAGE: 502/490/480/469/458/ MODEL: 447/436/251/240/229/ AMPS: 218 : I3697: Rex Mfg. Clothing Sets. These are compared to standard-efficiency aluminum-wound units, that are designed for a 150C rise. The 480V three phase to 120/208Y 75KVA transformer delivers 120/208Y to the 200 amp Nema 3R main breaker secondary 120/208Y panel. B - Reference [Section 220. V LL = Line-Line Volts. Transformers don't "use" amps. Main Breaker kVA Rating Primary Lugs Secondary 208V 225A 75 400A 400A 139-0553-00 Transformer Sizing Guide. Three (3) Phase Amps to kVA calculation. 277/480 volt three-phase. The machines are always rated in watts. kVA to Amps Calculator. Do need to consider, is the total connected load 200 amps? Can load a transformer 80% of nameplate rating. 000 VA / 220 V = 340,9 Amp If it's a three phase. 75 KVA Transformer Power Distribution - Three Phase 480V to Single Phase 120/240V - Nema 3R Part #: MPD-480-4X125A-75K-5X240-8X120 MADE IN THE USA This Larson Electronics 75KVA Power Distribution Substation has a 600 amp three phase 480 volt€main breaker panel and a 200 amp 120/240 main breaker panel. 6 Reactive Amps = 8. So, for a 100 KVA 120/208v three phase transformer the full load ampacity is 277. 66 fusoh020 0. It's very common to see a 75KVA transformer fed with a 100 amp 480 circuit and for it to feed a 225 amp main breaker in a 120/208 panel. If a 75 kVA three-phase transformer is made up of three 25 kVA single-phase transformers connected in closed delta to a 22. a) V 1 = 4000 V, V 2 = 400 V, Transformer Rating = 50 kVA = V 1 × I 1 = V 2 × I 2. a 75-kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be installed in a small industrial plant. I would fuse the secondary at 3. 577 x rating of closed delta system=0. ### 3 100 278 120 How many amps can a 50 kva transformer handle? 50 kva is 50,000 volts amps, which is 200 amps at 240 volts, but we all know you'd use 50 kVA to power over 1,200 amps. The examples of 1,500 kVA and 75 kVA transformers in the table below are of high-efficiency, copper-wound transformers designed to achieve an 80C rise and high efficiency. 2 pole breaker in sub-panel (need size) will feed a new 1 phase transformer (480 to 240/120 VAC). SUBSCRIBE TO OUR. Dec 19, 2011 · 200 Amps x 208 volts x 1. VA=Volt-Ampere. Provided with a Class 105 insulation system. You might be able to sneak by with 100 amps, but that 100 amp breaker might not handle the inrush of the transformer and if that happens you will be redoing it all. SIEMENS 225 KVA 3R OUTDOOR DRY TRANSFORMER PRI 480V SEC 208Y/120V 3Ø. The kVA unit represents kilovolt-amperes, or 1,000 volt-amperes. Below, transformer in place, existing 480 feed connected into it. A 75kVA 480 to 208Y/120 volt transformer is a fairly common transformer. TJ SNOW stock 6608 - AUTOMATION INTERNATIONAL (Federal) 75 KVA Press-type Spot Welder with a unique programmable tooling table. I thought I had this figured out, but have become unsure. (1) KV 600 AMP FUSED SERVICE INTERRUPT - 2500 KVA POWER CAST COIL SECONDARY SIDE IS 4000 AMP MLO WITH (5) DS416H'S M/O D/O WITH AMPTECTOR 1A L,S,I; ENCLOSURE-AIR CONDITIONED PORTABLE BUILDING. This transformer is rated 75,000 VA (75 kVA × 1,000 = 75,000). Available in voltages through 35 kV (200 kV BIL), our pad mount transformers are built to order or from stock with modifications available, and meet all NEMA and ANSI standards. 1 step, then press the Calculate button to get the result in kilowatts (kW). But the alternator and the transformer are the only machines which are rated in volt-amp. Answer: (c) a or b. larsonelectronics. Example: Replacing a 45KVA loaded at 50% will result in a savings of $618 a year and of $18,450. American Midwest Power's Marina Substations are designed to safely and efficiently distribute power in marina and port applications. A single-phase air conditioner requires 16. S (kVA) = apparent power in kVA I (A) = current, in amps V (RMS) = rms voltage. RE: Transformer sizing for motor starting. offers a full line of electrical single and three phase transformers. 120-N3R 480D 3 Phase Energy Efficient Transformer from Larson Electronics is powerful reliable and designed with the environment in mind. Nominal amperes at nameplate kVA, all transformer types kVA Volts Amps = kVA X Maximum amps for Oil/Silicon filled 65 deg, fan rating Nominal X 1. 5 mva transformer current rating are made in power ratings from around 75 kVA to around 5000 kVA. Waterproof Transformer Converts 120-240V AC to 12/24 Volts DC - 25 Amp Max- Straight Blade Wall Plug. Transformer Conductor 10 HP Energy Flow θ er 6593 B= True Power Watts =8592 Power Factor =. 4 sf 1/2 x - - - 10 - 0. 15 amps X 300% = 69. Calculate Size of Circuit Breaker or Fuse on Primary and Secondary side of Transformer having following Detail Transformer Details(P)= 1000KVA Primary Voltage (Vp)= 11000 Volt Secondary Voltage (Vs)= 430 Volt Transformer Impedance= 5% Transformer Connection = Delta / Star Transformer is in unsupervised condition. (12) 5-20R DUPLEXES + (2) CS6369. 5 Through 10000 kVA 15 Through 1500 kVA. 72) = 210 amps. To calculate full load current, use this formula: Single Phase 600V Class To calculate KVA, use this formula: KVA VOLTAGE KVA VOLTAGE. Main Breaker kVA Rating Primary Lugs Secondary 208V 225A 75 400A 400A 139-0553-00 Transformer Sizing Guide. According to my limited experience, 40000w/460v = 87 Amps is what I need on the secondary side. For example, a 75-kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be installed in a small industrial plant. $ {tabHeaders [index]} This transformer is designed to convert 3-phase 480v to 3-phase 208v/120 to run equipment such as panels, motors, CNC machines, welders, conveyor systems, pumps, printing equipment, fabrication tools, and other business machines. The flux wave will reach its maximum value, 1/4 cycle or π/2 angle later, reaching the maximum value of the. Example: 10MVA, 66KV/11KV 3Phase Transformer, Impedance of Transformer is 8%. 000 VA / 220 V = 340,9 Amp If it's a three phase. Defined by James Watt (1736-1819) the inventor of first practical steam engine. This transformer is rated 75,000 VA (75 kVAamperes. Let us see if we have what you need. Click to see full answer. V AMPS: 90 L. Amperage of transformer secondary is 75,000VA / (208 x 1. com/p-73118-75-kva-transformer-power-distribution-480v-primary-120208y-secondary-cam-lok-input. So you have a 75 VA control transformer with a 24 volt secondary. 75 KVA 600V 120/208 Transformer Rental EFFICIENT AND RELIABLE POWER DISTRIBUTION | HEAVY-DUTY STAND. 600 AMP, (2) 400 AMP Disconnects & Sizes, 4 Starters. The AMP unit comes standard with one 3ph breaker, one 3ph receptacle, a 6 foot single phase inplut cord with plug and installed casters for a fully mobile phase converer. A 500 kVA 120/208, 3Ph, 4W transformer may yield a higher fault current value based on typical average impedance values; however the largest transformer APS will set could be a 1000 kVA. 500 kVA X 1000 = 500,000 VA. Transformer KVA. To calculate kVA, you need to enter the known values of voltage and the current into the respective fields. UL and CUL Listed. Transformer Calculations Jan. 5 Impedance Pct. 25 kV Safefront 200 Amp Primary Transformer Station for three 75 kVA Max Pad-Mounted Outdoor Drawing 99-352-1,2,3 dated 1999 25 kV Safefront 200 Amp Primary Transformer Station for three 75 kVA Max Pad-Mounted Outdoor Drawing 99-353-1,2,3,4 dated 1999 25 kV Safefront 200 Amp Primary Transformer Station for three 250 kVA Max Pad-Mounted Outdoor. Electrician. Catalog Number: 75T76H. Simply by dividing by the Voltage Voltage between Line and Netral = Line Line Voltage / sqrt(3) Example: Line Line voltage is 380 Volt Voltage between Line and Neutral is 220 Volt 75 KVA / 220 = 75. 75 VA ÷ 24 volts = 3. IEEE STANDARD High quality 75 kva 7. For example, a 75-kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be installed in a small industrial plant. 2A: Secondary Terminals: X1-X2-X3: Winding Conductor: Copper: Temperature Rise, °C: 150: Insulation Class: 220 (R) Insulation Level, (B. 1 Amps = KVA ÷ Volts ÷ 1. The phase current I in amps (with balanced loads) is equal to 1000 times the apparent power S in kilovolt-amps, divided by the square root of 3 times the line to line RMS voltage V L-L in volts: I (A) = 1000 × S (kVA) / (√ 3 × V L-L(V)) Calculation with line to neutral voltage. Is the transformer owned by the power company or is it customer owned? 400 amps of secondary protection is already to much for a 75 kva transformer @ 208 volts. The reason for this limitation in kVA size is, the turns ratio is the same as the voltage ratio. distribution transformer, dry type kva : phase : date code : freq. KVA Series Secondaries Parallel Secondaries Volts Amps Volts Amps. Use the following formula: KVA x 1000. Dimension: 2176 x 1357. The primary side current will be 90 amperes (A) (75,000 ÷ 480 ÷ 1. Length of service drop from transformer to building, Type and size of conductor, ie. Each phase will supply 1/3 of the kVA to the three phase load. How many amps does a 75 kva transformer put out? Education Details: Jun 25, 2020 · For example, a 75-kilovolt-ampere (kVA), three-phase transformer with an …. The 480V three phase to 120/208Y 75KVA transformer delivers 120/208Y to the 200 amp Nema 3R main breaker secondary 120/208Y panel. 60 T-1-37920 1. kVA to Amps Calculator. transformer size(kva) secondary maximum fault current in amps. %X = Percent Reactance C. has common primary-secondary windings which are not insulated from each other, offers no interference or disturbance isolation between primary and secondary circuits. It's very common to see a 75KVA transformer fed with a 100 amp 480 circuit and for it to feed a 225 amp main breaker in a 120/208 panel. Since Transformer is custom built item. 00 over a 30 year period (based on $0. The AMP Mobile rotary phase converter is plug and play ready for a quick and cost offective installation. a) V 1 = 4000 V, V 2 = 400 V, Transformer Rating = 50 kVA = V 1 × I 1 = V 2 × I 2. The transformer supplies four homes. 4160 v : 75 16,000 150 32,000 13,900 13,900 225 48,000 20,800 20,800. Listed below are the most common voltage combinations. , 250 MCM, aluminum. 770-621-0495. Electricity calculator. PRIMARY VOLTAGE 480. Model # EX75T3H. 90 amp breaker on 480 side. 10 a KWH) New Installations:. 5 PHASE: 3/60 LOW. UL Listed, CSA Approved. Secondary Voltage: 480Y/277. 4 Through 34. For single phase, KVA = (line to ground) * (phase current). Secondary Config: Delta Wye. kVA to kW calculation. transformer size(kva) secondary maximum fault current in amps. When the KVA rating has been calculated, divide that number by 0. KVA = Volts x Amps x 1. Over 3,000 transformers in stock, ready to ship. Therefore, amps can be calculated from AC - kW by dividing. To calculate full load current, use this formula: Single Phase 600V Class To calculate KVA, use this formula: KVA VOLTAGE KVA VOLTAGE. We are manufacturing Electrical Transformer from 25KVA – 5000 KVA. 75 kVA Step-down 3-phase Transformer. : meets final rule u. In single phase, the current 'I' in amperage is approximately equal to 1000 times the apparent power 'S' in Kilovolt-amps, divided by the voltage 'V' in volts. (Yes thats 208 amps at 208 volts) How where you planing on getting power to this new panel?. 3 125 A ED/EG/EJ, H N/A DASKP250 208. Calculating KVA to AMPs For Generators. Catalog Number: 75T76H. : 34349-17212-064. S (kVA) = √3 x I (A) x V L-L (V) / 1000, which means that the apparent power in. 98 fusoh021 1. To calculate the amperage rating of a device from the kVA rating, just enter the value of apparent power in kVA, voltage in volts, select. Go to "How to size a transformer" on page 1. It shows the maximum value of the voltage at which the machine is designed, and the current consumption occurs at that voltage. The simple formula to calculate the rating of three phase Transformers is: KVA = (√3. Unknown 200HP Motor 200 HP Electric Motor 1800 RPM. 1-10 kVA/1-ph. Primary 480 volts, the amps are 90. 75 VA ÷ 24 volts = 3. 15) Maximum amps for Dry type, 150 deg rise, FA rating Nominal X 1. See the table heading for appropriate usage. PDF Distribution Transformer Guide Compress - Free download as PDF File (. ( Obtain for each transformer if in Bank of 2 or 3) 4. Supply 75 kva single phase oil immersed distribution transformer price 75kva for 11KV to 230V 1 phase transformer $100. Apr 01, 2020 · System modifications can result in higher fault currents. 3-Phase kVA = Volts x Amps x 1. Unknown Disconnect 2,000 AMP Service Disconnect. Full Load Currents Rated Line Amps for KVA and Voltages of Single Phase Transformers (see below for 3 phase transformers) KVA 120V 240V 480V 600V 2400V 4160V …. larsonelectronics. 7% of closed delta system) You can better understand the above calculation with the circuit diagram given in. The phase current I in amps (with balanced loads) is equal to 1000 times the apparent power S in kilovolt-amps, divided by the square root of 3 times the line to line RMS voltage V L-L in volts: I (A) = 1000 × S (kVA) / (√ 3 × V L-L(V)) Calculation with line to neutral voltage. 00 Quantity: 225 Amp PRL-2 Panel 225 Amp PRL-2 Panel Product Details $600. 5 mva transformer current rating are made in power ratings from around 75 kVA to around 5000 kVA. The primary side current will be 90 amperes (A) (75,000 ÷ 480 ÷ 1. 75 kVA Step-down 3-phase Transformer. Amp tables Simple Xfmr Calcs Calculator With Utility and XR ratios Cover Sheet Detailed_Calculations Main_Sheet Simple_Calculations Xfmr_Tables Nominal amperes at …. STOCK # T633. Let's try a practice problem. Of course lesser is better. Our transformers are built to last, guaranteed. Units converter, tool online. (a) Standard Reactances and Impedances for Ratings 500 KVA and below (for 60 cycle Transformers). Constructed to handle the harsh marine and coastal environments, all AMP marina substations are designed for maximum corrosion resistance. 75 VA ÷ 24 volts = 3. For more details on the 2. 5 20,833 50 75 3 120/240 1. If you don't see the step up or step down transformer that meets your power requirements, please call us and speak to one of our application engineers. Additionally, a secondary breaker causes the CSP transformer to have higher winding losses than a conventional transformer. 75 kVA transformer Product Details $25. Sola Hevi-Duty E2H75S Transformer, Dry Type, 480 Delta - 208Y/120, 75 KVA, Shielded 75 KVA, Transformer, Dry Type, 3-Phase, 480 Delta Primary Volts - 208/120 Volt AC, Shielded, For Outdoor, Use Weather Shield WS30. NOTE: For three-phase power, two or three transformers may be required. SIEMENS 225 KVA 3R OUTDOOR DRY TRANSFORMER PRI 480V SEC 208Y/120V 3Ø. The reason for this limitation in kVA size is, the turns ratio is the same as the voltage ratio. PDF Distribution Transformer Guide Compress - Free download as PDF File (. 00 over a 30 year period (based on $0. 400 kva transformer current rating transformer will be =400*1. 75 Kilovolt Amp (5) 75 kVA (14) 750 KVA (3) 750 VA (1) 9 kVA (2) GEE9T51B0002 GE 9T51B0002 050 KVA 240/480 TO 120 Dry Type General Purpose Transformer. has common primary-secondary windings which are not insulated from each other, offers no interference or …. or Best Offer. Three phase transformer has three connections such as delta, star and interconnected. View Details Contact Seller $400 Make Offer Expand. SUBSCRIBE TO OUR. tim89s said: I have a 480 volt primary delta and a 120/208v wye 75 kva transformer. 75% impedance rating indicates that 1203 amps will flow in the secondary if the secondary is short circuited line to line and the. 10 a KWH) New Installations:. 3 kV Transformer amps4 500 kVA, 3. The Nema 3R panel includes four single pole 20 amp breakers protecting 8 120V GFI outlets. Let us see if we have what you need. The transformer then supplies power to two new panels and a new wall mounted 1 kVA Buck & Boost transformer which powers the coffee brewer. 5%) Switch Gear - Circuit Switch Breakers. Using the calculation yields a 66 KVA transformer. 3 75 208 90. made in usa pri ( ) volts : sec ( ) volts : pri ( ) amps : power transformer tap positions tap volts 1 505 not for use on combustible floors ex75t3hoc eav8550503. LM 79 Test Laboratory for LED Street Light. 0 sf 1-1/2 x - - -. Nov 7, 2008. kVA stands for Kilovolt-Ampere and is the rating normally used to rate a transformer. F, S (kva), Motor Efficiency and H. Supply 75 kva single phase oil immersed distribution transformer price 75kva for 11KV to 230V 1 phase transformer $100. kVa & kW Amperage Chart This chart estimates the output amperage of a generator based on the operating power and voltage. Even if you allow for the short time overloading of a 45 kva. Our transformers are built to last, guaranteed. This 1500 kVA transformer has a secondary FLA of 1,804 amps. Primary full-load current, I 1 = (50 × 1000. When the …. The phase current I in amps (with balanced loads) is equal to 1000 times the apparent power S in kilovolt-amps, divided by 3 times the line to neutral RMS voltage V …. %Z = Percent Impedance D. 39 = 556 Amp. File Type: JPG. Amp tables Simple Xfmr Calcs Calculator With Utility and XR ratios Cover Sheet Detailed_Calculations Main_Sheet Simple_Calculations Xfmr_Tables Nominal amperes at …. 11-11934, 3 Phase, KVA 75, Primary Voltage 480, Secondary Voltage 208/120, 2+4- Taps, 150 ºC Temp …. 75 Kilovolt Amp (5) 75 kVA (14) 750 KVA (3) 750 VA (1) 9 kVA (2) GEE9T51B0002 GE 9T51B0002 050 KVA 240/480 TO 120 Dry Type General Purpose Transformer. Transformer, Dry Type, 75 KVA, 480 Delta; Volt Primary - 240 Delta;/120 Volt Secondary, 3 Phase, NEMA 3R, Cat #: V48M22T75EE, Mfr: Eaton. The rated secondary current is 208 amps at 208 volts. is the power factor of the load. 10 cfr 431 apr 2013 efficiency : ins class : encl : type : ins sys : % iz : weight : lbs. Available in voltages through 35 kV (200 kV BIL), our pad mount transformers are built to order or from stock with modifications available, and meet all NEMA and ANSI standards. • 225 KVA dry transformer 12470-480Y/277 volt 3 phase • Siemens 400 amp panelboard 480Y/277 volt 3 phase • 75 KVA dry transformer 480-208Y/120 volt 3 phase • High voltage incoming cabinet with load break elbows • 400 amp generator circuit breaker • 480 and 208 volt entry and exit cabinets on each side of trailer • Assorted power. 5 30071 KVA-2 = Largest Transformer(Input by Planner) Open Delta (Sample Combinations) (Input the Transformer Sizes) TRANSFORMER SECONDARY FAULT CURRENT Line-to-Line Short Circuit Amps (SCA) at the transformer secondary terminals based on an unlimited source. 2 kVL-L and an impedance of 5. 3 to determine the proper KVA based on the required load voltage, line voltage and load current. 3 kV Transformer amps4 500 kVA, 3. The operation of transformer at 1. For a 120/208v three phase 100 KVA tranformer we calculate the full load ampacity as follows: 100 x 1000. 0 Pieces (Min. The secondary load calc came out to be 157 amps. 732050808 x 1500 x 150) / 1000. 732 = 43,302, which is then divided by the Voltage 208V = 208. View the nation's largest resistance welding machine inventory online. The transformer supplies four homes. Very Good Used. 2 pole breaker in sub-panel (need size) will feed a new 1 phase transformer (480 to 240/120 VAC). The design of the 5 mva transformer oil capacity results mainly from the range of application, the construction, the rated power as well as the voltage level. 4 Through 34. If you don't see the step up or step down transformer that meets your power requirements, please call us and speak to one of our application engineers. Jacobson 75HP Jacobson 75HP DC Drive Motor. 732xVp Transformer Primary. Click to see full answer. Rating of Transformer in kVA. 45 amps which is NOT a STANDARD size OCPD. Circuit Breaker = 6X87A = 525A, so next standard size of CB = 600A. In single phase, the current 'I' in amperage is approximately equal to 1000 times the apparent power 'S' in Kilovolt-amps, divided by the voltage 'V' in volts. This means that amps are equal to the kVA times 1,000, divided by the voltage. for three phase transformers. PRIMARY VOLTAGE 480. Unknown 200HP Motor 200 HP Electric Motor 1800 RPM. The primary or input voltage will be 480V, and …. kVA Catalog Number Group 1 Rolled Steel Catalog Number Group 2 Stainless Steel 3 Height in (mm) Width in (mm) Depth in (mm) Approx. 01-01 10/4/10 danna guinn elkins dwg. Capacity of open delta system = x rating of one transformer = x 10 kVA= 17. For Outdoor use Weather Shield WS59. S (kVA) = I (A) x V (V) / 1000, which means that the apparent power in Kilovolt-amps is calculated by multiplying the current in amps with the voltage in volts and dividing the results by 1000. Order a 480-208Y/120-Volt transformer here. Primary 480 volts, the amps are 90. Indoor enclosure: 42”H x 32”W x 22”D Manual tap changing capability Input/Output Terminal Block provided. 000 VA / 220 V = 340,9 Amp If it's a three phase. Also, how many amps is a 45 kva transformer good for? If your mission is to match a transformer size to the rating of a 200 amp panel, you get there by …. Kilovolt-Amps (kVA) Volts x Amps 1,000 Volts x Amps x 1. 5 amps on the primary and ~10A on the. Used Sorgel 34350-16412-007 Insulated Transformer with: kVA: 75 60 Hertz High voltage: 480Y/277 High voltage amps: 90 Low voltage: 208 Low voltage amps: 208 GoHz HZ-50-3315 Three Phase Frequency Converter. =1804A 25' - 500kcml Cu 3 Single Conductors 6 Per Phase Magnetic Conduit 2000A Switch KRP-C 2000SP Fuse 400A Switch LPS-RK-400SP Fuse 50' - 500 kcmil Cu 3 Single Conductors Magnetic Conduit Motor Contribution* System B Available Utility Infinite Assumption 1000 KVA Transformer. Very Good Used. I AC1Ø = Current / Amps 1 phase. What size transformer do I need for a 200 amp service? For a 200 A at 120 V single-phase service, the apparent power is 48 kVA. Waterproof Transformer Converts 120-240V AC to 12/24 Volts DC - 25 Amp Max- Straight Blade Wall Plug. What is the division of load when the total load is 140 kVA, 80% power factor? Both transformer have the same voltage ratio. For larger transformers (over 600v) please contact our sales team for help choosing the right unit: 1-800-270-2011. Reset Button to uses to clear the […]. RE: Transformer sizing for motor starting. 577 x 30 kVA= 17. Single-Phase Transformers. 1-10 kVA/1-ph. So a 200 amp service for the 208 side. E-CART PTU W/ PNEU WHEELS, PRI: 480V, 3PH 75 KVA TRANSFORMER W/ DISC AND 60 AMP WELDING RECPT SEC: 208Y/120V COMBO PANEL W/ MCB AND (6) 5-20R DUPLEXES + (2) CS6369. When a transformer is switched on from the primary side while keeping its secondary circuit open, it acts as a simple inductance. 115 KV) = 1. 5 kVA 150 kVA 225 kVA 300 kVA 500 kVA. (Example) 1 KVA - 40 db; 75 KVA - 50 db. Additional Info: The transformer has been tested and is in working condition. Sec: 208Y/120V. Up to 10 MVA. 35 42,719 30,864 2. 577 x rating of closed delta system=0. 5 15 125 54. That will be a 125 …. Sep 06, 2019 · Daily overload / emergency overload in excess of 1. Transformer Size/Type. 1 Amps = KVA ÷ Volts ÷ 1. Eaton V48M28T7516 Transformer, Dry Type, TP-1, 480 x 208Y/120VAC, 3PH, 75 kVA, 75 KVA, 3-Phase, 480Δ Primary Volts - 208Y/120 Secondary Volts, NEMA 1, Energy Efficient, Energy Star labeled Transformer, Ventilated, 150 Degree C, Aluminum Windings, 60 Hz operation, Frame Size: FR942. 6 Reactive Amps = 8. If a 75 kVA three-phase transformer is made up of three 25 kVA single-phase transformers connected in closed delta to a 22. 208 Volt Primary Three Phase Isolation Transformers. It was originally defined as 550 foot-pounds per second (ft-lb/s). Electricity calculator. larsonelectronics. for three phase transformers. 75 KVA Transformer Power Distribution - Three Phase 480V to Single Phase 120/240V - Nema 3R Part #: MPD-480-4X125A-75K-5X240-8X120 MADE IN THE USA This Larson Electronics 75KVA Power Distribution Substation has a 600 amp three phase 480 volt€main breaker panel and a 200 amp 120/240 main breaker panel. Equipped to run between 208-250V. A 125 kVA distribution transformer with 4% impendence is connected in parallel with another transformer rated 75 kVA and with 3% impedance: The secondary voltage is 220 volts. To calculate kVA, you need to enter the known values of voltage and the current into the respective fields. V AMPS: 90 L. IEEE STANDARD High quality 75 kva 7. OR Rating of Pri. 75 kVA 600 Volt to 480 Volt Three phase Autotransformer. 00 Inches Depth, Catalog Number 75T3H. 400 kva transformer current rating transformer will be =400*1. Heat loss to the ambient air from some typical electrical equipment are indicated below: Transformers. 9 =900kw @0. 60 kW Perkins Generator | GP-P65-60SA 75 kVa Diesel Genset. , Raleigh, NC. Transformers magnetically couple electrical power from a primary winding to one or more secondary winding(s) An ideal transformer …. This results in an estimated incident energy exposure of only 0. 0 Amps slightly below the VA rating. I assume this is the type of transformer you are referring to. The following kVA to Amps conversion calculator will convert the apparent power "S" (i. 277/480 volt three-phase. The AMP Mobile rotary phase converter is plug and play ready for a quick and cost offective installation. I (A) = 1000 × S (kVA) / V (V) 3 phase kVA to amps calculation formula Calculation with line to line voltage. The MT-ATX-3P-480D-75KVA-208Y. 1500 KVA Transformer 480V, 3Ø, 3. Dimensions; Length: Width: Height: 2' 10" 3' 4" 4' 4" 0. 1000kva =1000*0. Since Transformer is custom built item. Transformer Ground: (1#2CU) 2 1/2" EMT. Examples 1. We keep this single-phase primary wave. High Voltage Amps: 90. 75 Kva Transformer Wiring Diagram Sample August 9, 2018 April 17, 2018 by headcontrolsystem 75 kva transformer wiring diagram - Building electrical wiring diagrams reveal the approximate areas and affiliations of receptacles, illumination, and irreversible electrical services in a structure. For example, a 75-kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be installed in a small industrial plant. 25 kV Safefront 200 Amp Primary Transformer Station for three 75 kVA Max Pad-Mounted Outdoor Drawing 99-352-1,2,3 dated 1999 25 kV Safefront 200 Amp Primary Transformer Station for three 75 kVA Max Pad-Mounted Outdoor Drawing 99-353-1,2,3,4 dated 1999 25 kV Safefront 200 Amp Primary Transformer Station for three 250 kVA Max Pad-Mounted Outdoor. As an example, if an arc flash occurs on the 208Y/120V secondary terminals of a 112. Please note that this table is intended to be used as an estimate of how many amps a generator outputs during operation and is not an exact representation due to various factors that can increase or decrease this value. kVA to kW calculation P(kW) = S(kVA) × PF The real power P in kilowatts (kW) is equal to the apparent power S in kilovolt-amps (kVA), multiplied by […]. The kVA unit represents kilovolt-amperes, or 1,000 volt-amperes. The transformer then supplies power to two new panels and a new wall mounted 1 kVA Buck & Boost transformer which powers the coffee brewer. The primary side current will be 90 amperes (A) (75,000 ÷ 480 ÷ 1. (1) WESTINGHOUSE V48M28T75F TRANSFORMER. 732050808 x 1500 x 150) / 1000. 8-kV single-phase power transformer has a per-unit resistance of 1 percent and a per-unit reactance of 5 percent (data taken from the transformer’s nameplate). 225 amp breaker in that panel will feed 225 amp 3 phase 480VAC sub-panel. 5 36 167 1391 695 401 347 278 69. 75% impedance rating indicates that 1203 amps will flow in the secondary if the secondary is short circuited line to line and the. The 480 side of a 75 KVA transformer is 90 amps at full load. connector, transformer secondary set screw type with inhibitor ¾" stud, range: 10 - 500, 6 ports or for 75, 100, and 167 kva transformers 21 cnnts006 5 connector, transformer secondary set screw type with inhibitor, 4-hole nema, range: 10 - 500, 3 ports and 22 bolte001 20 bolt; terminal kit; ½" x 2" bolt, washers, and nut. Order a 480-208Y/120-Volt transformer here. (Yes thats 208 amps at 208 volts) How where you planing on getting power to this new panel?. Our KVA to AMPs chart allows you to see exactly what kW or voltage the given KVA rating converts to so you can safely and adequately power your generator without the worry of a power overload. Voltage Drop 13. This UL Recognized magnetic transformer with a maximum power rating of 75 watts is suitable for use with halogen lamps. The total SESs served via a single transformer for the 120/208V shall not exceed 3000 Amps. Delta connection has an advantage where it has a capacity to deliver the original output even if any one transformer of a group are disabled. 66 fusoh020 0. 6%, 10%, 13. Source: jialong. : 34349-17212-064. 6, 2020 Can you perform transformer calculations correctly every time? Mike Holt. 75 kVA Isolation Transformer - 480V AC Primary - 120/240V AC Secondary - NEMA 3R - Single Phase 1 offer from $4,212. 732 /100 = kVA If the kVA of the load is equal to or less than 5kVA, then the transformer 500kVA fits the job. 9 Hz) and Volt (0 - 520V), built-in step-down/step-up transformers. The formula to convert kVA to amps is: Current(A) = Power (kVA) × 1,000 Voltage (V) This means that amps are equal to the kVA times 1,000, divided by the …. (K= 1,000) The full value in VA, 75,000 divided by 1. So, for a 100 KVA 120/208v three phase transformer the full load ampacity is 277. 05-10,000 KVA. Primary 480 volts, the amps are 90. 10 2,600 15 4,200 25 8,000 37. If the secondary is. RE: Transformer sizing for motor starting. Indoor enclosure: 42”H x 32”W x 22”D Manual tap changing capability Input/Output Terminal Block provided. A 75 kva transformer has a rated output at 208 volts of 208 amps. transformer size(kva) maximum fault current in amps @ 240 v. Apart from kVA, primary and secondary voltage, frequency, winding connection type, environmental conditions, cooling and noise are some of the other factors considered during selection of transformer. 600 AMP, (2) 400 AMP Disconnects & Sizes, 4 Starters. , 250 MCM, aluminum. When the KVA rating has been calculated, divide that number by 0. System modifications can result in higher fault currents. This information KVA 3. so this circuit would be fused at a 3 amp maximum fuse. Description. 3 125 A ED/EG/EJ, H N/A DASKP250 208. kVA Catalog Number Group 1 Rolled Steel Catalog Number Group 2 Stainless Steel 3 Height in (mm) Width in (mm) Depth in (mm) Approx. 732 ÷ 1000 TRANSFORMER FULL LOAD CURRENT RATINGS Three Phase 600V Class Fields containing " - " indicate the current value exceeds the capacity of some current-carrying components such as bushings, cables, bussing, etc. The primary side has a 100 amp breaker with #3's ran to the primary side of the transformer. Three Phase AC - kW to amps. 732 1,000 Kilowatts (kW) kVA x Power Factor (PF) kVA x Power Factor (PF) Volts x Amps 1,000 AMPS - When kW are known kW x 1,000 Volts x PF 312 250 1503 867 820 751 410 376 300 75 55 43 26 16 13 375 300 1806 1042 985 903 493 452 361 90 66 52 31 19 16. All values should be reviewed and confirmed by an electrician or electrical engineer. How many amps does a 75 kva transformer put out? Education Details: Jun 25, 2020 · For example, a 75-kilovolt-ampere (kVA), three-phase transformer with an …. The load voltage and load amps must be known to calculate KVA rating. NEC® and UL Maximum Allowable Fusing (amps) With Only Primary Protection 230 Volts Single-Phase 460 Volts Single-Phase 575 Volts Single-Phase Transformer kVA Primary Current (A) JTD or JTD_ID Series Primary Current (A) JTD or JTD_ID Series Primary Current (A) JTD or JTD_ID Series 0. If you want to fuse the primary side then 75 / 120 (assuming 120 VAC mains supply) = 0. Base KVA: 2500 kVa. 30 kVA Isolation Transformer - 13800V Delta Primary - 6600V Delta Secondary - NEMA 3R. so this circuit would be fused at a 3 amp maximum fuse. transformer size(kva) maximum fault current in amps @ 240 v maximum fault current in amps @ 480 v. Transformers don't "use" amps. Single & Three Phase Line kVA calculator is an online tool used in electrical engineering to measure the unknown quantity by two known quantities applied to the below formulas for single phase and three phase connection. 00 Inches Height, 20. 33 32,749 23,496 2. This unit is an isolation transformer, 480 delta to 480Y/277. Jan 6, 2011. %Z = Percent Impedance D. Calculate Size of Circuit Breaker or Fuse on Primary and Secondary side of Transformer having following Detail Transformer Details(P)= 1000KVA Primary Voltage (Vp)= 11000 Volt Secondary Voltage (Vs)= 430 Volt Transformer Impedance= 5% Transformer Connection = Delta / Star Transformer is in unsupervised condition. 20 cal/cm2 for each electrical cycle or 1/60th of a second. This unit is an isolation transformer, 480 delta to 480Y/277. for three phase transformers. 732 / Voltage = Amperage. This transformer is rated 75,000 VA (75 kVA × 1,000 = 75,000). Unit Substation. 75 Transformer 11 Kv/440v 500kva 75 Kva 3 Ph Distribution Transformer Oil Cooled Vector Group Dyn11. The primary side current will be 90 amperes (A) (75,000 ÷ 480 ÷ 1. S (kVA) = sqrt(3) x I (A) x V (RMS) / 1000. This unit steps up 208 volts AC to 230 volts AC without needing a large format transformer Draws 22. MIDWEST offers a wide selection of used, new and reconditioned 75 KVA dry type low voltage transformers and 75 KVA transformers for sale. The current (amps) is more than 9 amps so use 125% rating. 150 kVA 3 phase 460V 60 Hz to 415V, 400V 50 Hz static frequency converter, adjustable output Hertz (40. 15 amps X 300% = 69. 05-10,000 KVA. Transformers are available at Mouser Electronics from industry leading manufacturers. Dec 09, 2013 · 75 kVA 150 Volts RMS 500 Amps RMS 400 Amps peak 125 Amps RMS 380 -- 500 VAC, 50/60 Hz, 3 Phase when required), and a power transformer. (Yes thats 208 amps at 208 volts) How where you planing on getting power to this new panel? You can not 'tap' the existing secondaries, you have to go right back to the transformer terminals. Do need to consider, is the total connected load 200 amps? Can load a transformer 80% of nameplate rating. ACME Transformer/ Cat No T252008S Style SR/ 0. For a 120/208v three phase 100 KVA tranformer we calculate the full load ampacity as follows: 100 x 1000. Or take a larger VA transformer:. UL and CUL Listed. load KVA or load Amps -'tou do not need to kno\\ hot h-one or the nt her I'> 'ou1Tic1ent lor '>dn:uon purpo-. LM 79 Test Laboratory for LED Street Light. 00 Quantity: 10250TA45 Cutler-Hammer Push Button/Padlock Attachment Jefferson. 625 Amp so I would start with a 0. 01-01 10/4/10 danna guinn elkins dwg. (1) WESTINGHOUSE V48M28T75F TRANSFORMER. For larger transformers (over 600v) please contact our sales team for help choosing the right unit: 1-800-270-2011. Click here to inquire about the 2500 kva pad mount. distribution transformer, dry type kva : phase : date code : freq. E-CART PTU W/ PNEU WHEELS, PRI: 480V, 3PH 75 KVA TRANSFORMER W/ DISC AND 60 AMP WELDING RECPT SEC: 208Y/120V COMBO PANEL W/ MCB AND (6) 5-20R DUPLEXES + (2) CS6369. B - Reference [Section 220. DOE 2016 Efficient. 732 / 1,000 = KVA = 24. LM-79 Testing for LED Street Lights. Ship Weight lbs (kg) Design Style 1 Elec Conn Primary Amps @ 277 V Secondary Amps Encapsulated 1 HS12F1BS HSP12F1BS 10. The breaker or fuse would have a minimum interrupting rating of 520 amps at 480 volts. Only 1 left! SPONSORED. The primary or input voltage will be 480V, and …. Details: Jun 25, 2020 · For example, a 75 -kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be installed in a small industrial plant. 55 28,101 20,161 100 120 240 1. Mouser is an authorized distributor for many transformer manufacturers including Hammond, Murata, Pulse, TE Connectivity, Triad, White-Rodgers & more. Transformer kVA capacity is calculated based on load voltage and load current. A 75 kva transformer has a rated output at 208 volts of 208 amps. 75 in wide by 9. The load voltage and load amps must be known to calculate KVA rating. 60 AMP WELDING RECPT SEC: 208Y/120V COMBO PANEL W/ MCB. 732X66000) = 87A; Rating of Pri. Primary 480 volts, the amps are 90. While the increase in losses on units 50 kVA and below are negligible, they do become more significant on units 75 kVA and above. For a 120/208v three phase 100 KVA tranformer we calculate the full load ampacity as follows: 100 x 1000. 9 Hz) and Volt (0 - 520V), built-in step-down/step-up transformers. If you don’t see the step up or step down transformer that meets your power requirements, please call us and speak to one of our application engineers. Example: Replacing a 45KVA loaded at 50% will result in a savings of $618 a year and of $18,450. Primary Amps: 90. This 1500 kVA transformer has a secondary FLA of 1,804 amps. KVA = Kilovoltamp size of transformer. 00 Quantity: 10250TA45 Cutler-Hammer Push Button/Padlock Attachment Jefferson. This transformer is rated 75,000 VA (75 kVA × 1,000 = 75,000). 97% ) Primary Config: Delta Wye. For this exercise, let's assume we are installing a 45 kVA and a 112. I currently have a set of drawings that is showing the Primary OCPD being sized at 90 amps and the Secondary at 200 amps. Suitable for both indoor and outdoor applications the MT-ATX-3P-480D-75KVA-208Y. OR Rating of Pri. a 75-kilovolt-ampere (kVA), three-phase transformer with an input voltage of 480V will be …. 75 Transformer 11 Kv/440v 500kva 75 Kva 3 Ph Distribution Transformer Oil Cooled Vector Group Dyn11. Single-Phase: Volts x Amps /100 = kVA. Only 1 left! SPONSORED.