Selection Guides

Transformer lead times have stretched well beyond historical norms. Learn what drives delivery time, how far ahead to plan, and how to protect your project schedule.

A distribution transformer costs far more to run than to buy. Learn how to calculate total cost of ownership from no-load and load losses, and how to compare bids properly.

An industrial transformer buying guide: define duty, compare losses and materials, check testing and documentation, and evaluate total cost of ownership.

How to specify a medium voltage transformer: system data, BIL, vector group, impedance, tapping, cooling, enclosure and the switchgear interface.

How to choose transformer capacity for industrial and commercial sites: standard ratings, load factor, losses, headroom and the cost of getting it wrong.

Determine how much transformer capacity a factory needs: connected load, diversity, motor starting, harmonics, growth margin and when to use multiple units.

Choosing a transformer for a commercial building: dry type vs oil, noise limits, fire codes, plant room location, energy efficiency and consultant approval.

Compare oil immersed and dry type distribution transformers: cooling, fire safety, maintenance, noise, cost, lifespan and the right application for each.

Compare 11 kV, 22 kV and 33 kV transformers: current, losses, insulation level, switchgear cost and typical applications for each voltage class.

How to choose an industrial plant transformer: fault level, impedance, vector group, cooling, redundancy, harmonics and the switchgear interface.