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UCM AC Coil Specifications
VPI Coil System

The UCM VPI Coil System

Each order starts with a fully documented job card and a mock-up form to assure uniformity.


Conductors used are high conductivity 100% virgin copper, HD 3000 heavy enamel coated conductor is normally used or single or double glass over HD 3000 heavy enamel. Some applications may require mica turn taped conductors.

Coils are shuttle wound pressed to assure conductor alignment, dipped in varnish, oven cured.

Leads are cleaned and coils are spread and checked in a form for proper shape and uniformity.

Coil leads are insulated with sleeving or mica tape depending on the voltage and application.

Ground insulation consists of VPI mica tape and/or a combination of mica tape and wrapper. An armor tape, Dacron, or glass is applied.

For 6600 volts and up, a semi-conducting tape is applied to the slot section of the coil.

All coils are inspected for uniformity and numerous quality checks are performed during the manufacturing process.

Finished coils are hi-pot and surge tested to IEEE standards. A certification sheet of test performed and test values for installation is included with each shipment.

All coils are packed securely with foam and padding to assure against shipping damage.

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Universal Coil Manufacturing
2605 N Concord Rd | Belle Chasse, LA 70037
Phone: 504-367-8880 | Fax: 504-367-8960
Toll Free: 1-800-982-3390