3000 kVA Three-Phase Pad Mounted Transformer

If the mining panels or PDUs are designed for 415Y/240V, supplying 415V directly can eliminate additional 480-to-415V transformers. 480Y/277V may be more practical when the site already uses standard U.S. 480V switchgear and distribution equipment.

Because the available fault current can become very high. A 3000 kVA, 480V transformer with 5.75% impedance has a transformer-limited fault current of roughly 62.7 kA before upstream and conductor impedance are considered.

This directly affects switchgear AIC/SCCR and arc-flash studies.

Yes, but they must be electrically compatible. Voltage ratio, phase relationship, tap position, polarity, and impedance must be coordinated. Poor impedance matching can cause unequal load sharing and overload one transformer before the combined 6 MVA capacity is reached.

Yes. At the 3 MVA level, utility requirements can affect primary voltage, metering, protection, grounding, BIL, and service configuration. Confirming the utility specification early helps avoid redesign after the transformer has already entered production.

Yes, in many projects. A 2.5 MW load at 0.95 power factor requires approximately 2,632 kVA. Cooling, pumps, UPS losses, networking, and other auxiliary loads must still be included before confirming the final capacity.