Rating
750 kVA
Dimensions, in
80 x 72 x 78
Weight
6,600 lb
Impedance
5.75%
Amps at 480 V
902
Full load current
| Configuration | Full load current |
|---|---|
| 480Y/277 three phase, secondary | 902 A |
| 208Y/120 three phase, secondary | 2,082 A |
| 12470 GY/7200 three phase, primary | 34.7 A |
| 13200 GY/7620 three phase, primary | 32.8 A |
Nameplate full load current at 750 kVA, from kVA times 1000 divided by the voltage times the square root of three. Free to cite with a link to this page. Any other rating or voltage, use the kVA to amps calculator.
Standard configuration
| Primary | 12470 GY/7200 or 13200 GY/7620 |
|---|---|
| Secondary | 480Y/277, also 208Y/120 on smaller ratings |
| Standards | ANSI/IEEE C57.12.34 and C57.12.00 |
| Efficiency | DOE 2016 per 10 CFR Part 431 |
| Temperature rise | 65 C |
| Fluid | Mineral oil, FR3 natural ester on request |
| Front | Dead front with separable elbow connectors |
| Feed | Loop feed, six primary bushings. Radial available |
| Taps | Two above and two below nominal at 2.5 percent, full capacity |
| UL | Listed under CCN XPLH, liquid-filled distribution over 600 V |
What to check before you order
- Primary voltage and taps. A unit built at 12470 GY/7200 with a 13200 tap covers both common systems, but only if the taps are full capacity. How taps work
- Dead front or live front. Most utilities will not accept live front on new work. The difference
- Loop or radial feed. Loop feed needs six bushings and costs more. Which you need
- Pad and clearance. At 6,600 lb this needs a proper pad and crane access. Clearance rules
- Freight. A unit this size ships on a flatbed and often needs a crane at the far end. Freight quoted separately is the single most common surprise on a transformer order.
Who builds this rating
Maddox
Stocking distributor
Virginia Transformer
Builds to order
Sunbelt Solomon
Stocking distributor
Hammond Power Solutions
Builds to order
Hubbell
Global OEM
ERMCO
Builds to order
We quote this rating on every route we can buy it, delivered and factory, and we tell you which is which. Send us your spec or call 786 220 2801.
Common questions on this rating
| Weight | About 6,600 lb including fluid |
|---|---|
| Dimensions | Roughly 80 x 72 x 78 in, width by depth by height |
| Amps at 480Y/277 | About 902 A full load, 34.7 A on a 12470 primary |
| Impedance | 5.75 percent, needed for any coordination study |
| Lead time | 40 to 60 weeks new from a US factory, days from stock |
| Price | What drives the number, then get it quoted |