Transformers adapt power to what the equipment expects: step-down and step-up transformers that bridge voltage differences, isolation transformers that break ground loops and scrub electrical noise for sensitive gear, and the UPS-family transformers that match a protected feed to the loads behind it. When the building's power and the equipment's nameplate disagree, a transformer is the fix.
Specify by voltage on both sides and by capacity with margin - a transformer run at its limit runs hot and dies early, so size to the actual load plus growth. Isolation transformers earn their place in labs, medical settings, and anywhere audio, video, or measurement equipment picks up hum from the mains. UPS-matched transformers should come from the UPS's own family so ratings and connectors line up. These installations often involve an electrician; plan the transformer with the circuit, not after it. COLAMCO quotes transformers with the power systems and equipment they serve for business, government, and education facilities.