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(P) 616.842.5430 (F) 616.846.9137

Grand Transformers Incorporated
GTI is a custom designer and manufacturer of inductive components that include Power Transformers, Line/Load Reactors and DC Chokes. GTI specializes in providing dry type custom products that meet the unique requirements of OEM's in a variety of markets, some of which include: Adjustable Speed Drives, Elevators, Power Quality, Medical, Energy/Renewables, and HVAC.
GTI is located in Grand Haven, MI and proudly offers the following product capabilities:
- Transformers from 1KVA to 750KVA, at 5KV max voltage; Isolation, Auto, K-rated, DIT, Multipulse, Scott-T, encapsulated, high efficiency single and three phase.
- Line and Load Reactors to 2500 Arms at 5KV max voltage; power filtering inductors to 20KHz, air cores, encapsulated, low loss, single and three phase.
- DC Chokes to 1000Adc, 360-20KHz, encapsulated.
GTI Features:
- An experienced engineering staff
- CSA Category certified test facility to CSA 22.2 #66, ANSI/IEC 17025 compliant
- NIST calibrated test equipment
- Company-wide "LEAN" initiative
- 60 plus years in business
- An experienced engineering staff
- CSA Category certified test facility to CSA 22.2 #66, ANSI/IEC 17025 compliant
- NIST calibrated test equipment
- Company-wide "LEAN" initiative
- 60 plus years in business
Please take a few moments to browse our website by clicking on the links above to see what we can design and build for you. If you would like a quote or require more information on our products and what we do, please contact our friendly sales department by clicking on the "Contact Us" link above.