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Cast Coil Transformers
Cast coil transformers are the ideal solution for voltage distribution in harsh environments with airborne dust or high humidity. The windings are vacuum cast inside a solid block of epoxy resin which provides the highest degree of protection to the windings.
Capabilities
Maddox’s cast coil transformers are designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI C.57, DOE, and IEEE as applicable.
They are engineered for both indoor and outdoor applications and need minimal maintenance due to their rugged construction. Cast coil transformers use environmentally safe insulation systems that don’t require the fire proof vaults and catch basins that liquid filled transformers need. This allows the installation of cast coil transformers inside buildings close to the load, improving overall system regulation and reducing costly secondary line losses. The fiberglass reinforced construction of these units also provides higher short circuit strength and impulse voltage strength.
Product Scope
100 kVA - 10,000 kVA
Up to 46kV (250kV BIL)
Technical Specs
Standard specs
Self Cooled (ANN/AN)
60Hz
Aluminum (Al) Windings
180°C (115°C Temperature Rise)
Primary taps +/-2 x 2.5%
Terminal Bus Stubs Suitable For Cables
NEMA 1 Indoor
ANSI 61 Grey Powder Coat
Optional upgrades
Forced Air Cooled (AFN/AF)
50/60Hz
Copper (Cu) Windings
80°C Rise Available
Optional Unit-Substation or Padmount Configuration
NEMA 2, 3R, 4, 4X & 12
Buss Coordination with switchgear (Unit-Substation configuration)
Dial (Analog) or Digital Thermometers
Neutral Ground Resistors (NGR) and Monitoring
Anti-Condensation Strip Heaters
Switching surge mitigating R.C. Snubber
Ground Fault Protection Relays (GFR)
Anti-Vibration mounting to reduce transformer hum (sound level)
Provision for Seismic mounting or complete Seismic Snubbers and Restraints
Distribution, Intermediate or Station Class Surge Arresters
Provision for Buss Duct Entry
Fully Insulated Buss
Mimic Buss
Kirk-Key Interlock
Transformer Ordering Made Easy
01
Request a Quote
Call or fill out the form below to get a quote. Most quotes are turned around the same or next-day. | 02
Place your order
Send us a purchase order and your dedicated customer service rep will send you an order confirmation. | 03
Receive your transformer
We’ll handle all transportation and logistics. Maddox has the shortest lead times in the industry so you can get the power on when you need it. |
It was what our Team was looking for. We really appreciate the updates and customer service after placing the order
Mark R.
Couldn't ask for more! lt was easy to find theright product using the website. Purchasingonline was simple. Delivery was fast.
Krisopher W.
This product works fantastic for my office. lt isused to supply voltage for an EV charger andworks flawlessly
Jennifer M.
Get A Quote
Fill out the form and a member of our team will get back to you as soon as possible. Our average response time during business hours is 30 minutes.