Energy » Transformers » Power Transformers » Minnesota

Building Filters

7

New Power Transformers in Minnesota, USA

  • Trusted Seller
    Hammond Power Solutions 30KVA Dry

    Hammond Power Solutions 30KVA Dry Type Transformer

    • Manufacturer: Hammond

    Part No. NMK030KD, S# D10DB, 30kva, Type K, Cooling ANN, Temp rise 150°C, Temp class 220°C, Encl. type NEMA-3R, Dry type, HV 480v, LV 240v, Weight 310 lbs.

    $800 USD
    Hugo, MN
  • Trusted Seller
    REX POWER MAGNETICS RC9C-B

    REX POWER MAGNETICS RC9C-B

    • Manufacturer: Rex Power Magnetics

    HYDMECH / REX POWER MAGNETICS (NEW) MODEL RC9C-B 9 KVA TRANSFORMER 9 KVA 240 VOLT INPUT / PRIMARY 208 VOLT OUTPUT / SECONDARY

    Dodge Center, MN
  • Trusted Seller
    REX POWER MAGNETICS RC4C-B

    REX POWER MAGNETICS RC4C-B

    • Manufacturer: Rex Power Magnetics

    HYDMECH / REX POWER MAGNETICS (NEW) MODEL RC4C-B 4 KVA TRANSFORMER 4 KVA 240 VOLT INPUT / PRIMARY 208 VOLT OUTPUT / SECONDARY

    Dodge Center, MN
  • Trusted Seller
    REX POWER MAGNETICS RC4C-B

    REX POWER MAGNETICS RC4C-B

    • Manufacturer: Rex Power Magnetics

    HYDMECH / REX POWER MAGNETICS (NEW) MODEL RC4C-B 4 KVA TRANSFORMER 4 KVA 240 VOLT INPUT / PRIMARY 208 VOLT OUTPUT / SECONDARY

    Dodge Center, MN
  • Trusted Seller
    REX POWER MAGNETICS RC9H-B

    REX POWER MAGNETICS RC9H-B

    • Manufacturer: Rex Power Magnetics

    HYDMECH / REX POWER MAGNETICS (NEW) MODEL RC9H-B 9 KVA TRANSFORMER 9 KVA 480 VOLT INPUT / PRIMARY 208 VOLT OUTPUT / SECONDARY

    Dodge Center, MN
  • Trusted Seller
    Trumbell Electric 3ph Power Supply

    Trumbell Electric 3ph Power Supply Panel

      Rated 240v AC 3ph, Fused type, Has the following fused disconnects, (1) 400amp, (1) 100amp, (6) 60amp, (4) 30amp, Overall size of panel 74"L x 32"W x 10"D

      $1,500 USD
      Hugo, MN
    • Trusted Seller
      MGE Topaz 700 225kva Power

      MGE Topaz 700 225kva Power Line Conditioner System

      • Manufacturer: Topaz

      Model TDL-225K-6, TOPAZ 700, S# 7A-01014 & S# 7A-01012, Date Mfg. 03/2001, AC Input 480v 236.25kva 3ph 60hz, Output 225KVA 208/120v, We have 2 available, They were new in March 2001 and never used, Overall size ...

      $20,000 USD

      Get financing

      Est. $376/mo

      Hugo, MN

    Overview

    Power transformers transfer electrical energy between voltage levels for utilities, substations, and large industrial plants. These heavy, high-capacity units come in oil-filled or dry-type designs, with cooling classes (ONAN, ONAF, etc.), on-load tap changers, bushings and protection gear. Buyers must match voltage class, impedance, capacity (kVA/MVA), and cooling to system needs, and plan for foundation, handling, transport and commissioning.

    FAQ

    What specifications should I check when buying a used power transformer?

    Confirm voltage ratios, kVA/MVA rating, impedance, cooling type, phase configuration, on-load tap changer condition, bushing types and insulation class, and recent test reports (DGA, insulation resistance, turns ratio).

    How do I verify a used transformer's condition before purchase?

    Request factory and maintenance records, Dissolved Gas Analysis (DGA), insulation resistance, power factor tests, sweep-frequency response (SFRA) and a visual inspection report for leaks, rust and bushing integrity.

    What are the key shipping considerations for heavy power transformers?

    Plan for specialized heavy-haul transport, load lifting equipment, route permits, weight/axle limits, skidding or cradling, draining oil if required by regulations, and coordination with local authorities for oversized loads.

    What site preparations are needed before delivery and installation?

    Prepare a level, rated foundation or skid with proper anchoring, ensure crane access and pad capacity, verify cable entry, grounding, oil containment for liquid-filled units, and arrange for qualified rigging and electrical commissioning crews.

    What ongoing maintenance keeps a power transformer reliable?

    Perform regular DGA, insulation resistance and oil quality tests, thermographic inspections, tap changer maintenance, bushing checks, cooling system inspections and timely repairs. Follow manufacturer intervals and keep detailed service records.