Medium Voltage Transformer Selection Guide

Medium Voltage Transformer Selection Guide

TEMCo Medium Voltage Isolation Transformers are designed for stepping down incoming higher voltage power to utilize voltages for commercial, institutional, or industrial applications. The NEMA 3R ventilated enclosure makes it suitable for indoor use as well as outdoor protection against rain and sleet. Our transformers are built to last, guaranteed. That's why we back these with a decade long warranty.

Features

• 1 or 3 Phase
• Copper or Aluminum Wound
• 60 Hz
• NEMA 3R
• 150°C rise
• UL Listed and CSA Certified
• 10 Year Warranty

Index

Input Voltage

Select a transformer that will operate on the supply voltage available at your facility (Example: 2400V, 4160V, or 7200V). To ensure compatibility, check the wiring diagram by clicking a part number and viewing its product page.

Frequency

All of TEMCo's medium voltage transformers are rated for 60 Hz.

Windings

Copper wound models cost more than the equivalent aluminum wound versions. The primary advantage of copper is its superior corrosion resistance. Copper wound transformers are commonly used for corrosive or high humidity environments like marine applications, and when cost is not a factor.

kVA or Amp Output

Select a transformer with kVA based on your load requirements. It is fine to oversize significantly, but never to undersize for your load. For motor loads, do not exceed 60% of the maximum capacity of the transformer, because electric motors have start up requirements significantly higher than their running requirements.