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Substation Transformers
These ruggedized transformers are ideal for substation yards and power distribution line-ups.
Capabilities
Maddox’s liquid-filled distribution substation, and power-class substation transformers are designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI C.57, DOE, and IEEE as applicable. With a range of customizable features, Maddox substations can be configured to maximize performance, minimize potential arc flash exposure, and address environmental concerns. All designs can be supplied with full, or partial length air terminal chambers to make installation easy.
Product Scope
300 kVA - 100,000 kVA base
Up to 145 KV
Technical Specs
Standard Features
Type II non-PCB mineral oil (ONAN)
High-grade silicon-steel core
Aluminum windings (distribution class)
On-load tap changer
Reinforced carbon steel tank
Lifting lugs
Externally clamped high- and low-voltage bushings
Pressure relief valve
Pressure vacuum gauge
Liquid temp gauge
Liquid level gauge
Drain and sample valve
Schrader valve
Ground pads/lugs
Nitrogen blanket
65 degree C rise
Optional Features
Environmentally friendly, high fire-point FR3 oil (KNAN)
Copper windings
On-load tap changer
Stainless steel tank
Gauges with contacts
Auxiliary control cabinet
Winding temperature indicator
Fan package (ONAN/ONAF)
Lid-mounted pressure relief device
Sudden pressure relay
Lightning arresters
55/65 degree C rise
Step-up solar and wind duty design
Electrostatic shielding
K-rated design
Primary load-interrupter switch
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.