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Used Ajax Power Transformers in Kansas, USA

  • Trusted Seller
    AJAX TRANSFORMER KVA 30 PRI

    AJAX TRANSFORMER KVA 30 PRI 230/460

    • Manufacturer: Ajax

    AJAX TRANSFORMER KVA 30 PRI 230/460 AJAX TRANSFORMER KVA 30 PRI 230/460 CLASS AA 150 C RISE PH 3 HZ 60 SEC 240Y/139 SPEC 80768 SER 8115 VOLT 230 **PLEASE VIEW PICTURES CAREFULLY - SOLD AS IS** ***OLD STOCK*** PLE...

    $750 USD
    Coffeyville, KS
  • Trusted Seller
    AJAX TRANSFORMER, THREE PHASE,KVA 20,

    AJAX TRANSFORMER, THREE PHASE,KVA 20, PRI 230/460 V

    • Manufacturer: Ajax

    AJAX TRANSFORMER, THREE PHASE,KVA 20, PRI 230/460 V AJAXTRANSFORMERKVA 20HZ: 60PH: 3PRI: 230/460SPEC: 81681SEC: 275ZZ/159SER: 8149USED/ SOLD AS IS**PLEASE VIEW PICTURES CAREFULLY - SOLD AS IS** ***OLD STOCK*** P...

    $250 USD
    Coffeyville, KS
  • Trusted Seller
    AJAX 1-890-6229-201 40 KVA 3

    AJAX 1-890-6229-201 40 KVA 3 PHASE 460V TRANSFORMER

    • Manufacturer: Ajax

    “**NOT TESTED, SOLD AS IS.**” AJAX 1-890-6229-201 40 KVA 3 PHASE 460V TRANSFORMER AJAX TRANSFORMER40 KVA 3 PHASE 60 HZPRIMARY VOLTAGE: 230/460 DELTA SECONDARY VOLTAGE: 380Y/220PART NO. 1-890-6229-201SHIPPING DIME...

    $500 USD
    Coffeyville, KS
  • Trusted Seller
    AJAX 1-890-6229-203 12.5 KVA 3

    AJAX 1-890-6229-203 12.5 KVA 3 PHASE 460V TRANSFORMER

    • Manufacturer: Ajax

    “**NOT TESTED, SOLD AS IS.**” AJAX 1-890-6229-203 12.5 KVA 3 PHASE 460V TRANSFORMER AJAX TRANSFORMER12.5 KVA 3 PHASE 60 HZPRIMARY VOLTAGE: 230/460 DELTA SECONDARY VOLTAGE: MULTIPLEPART NO. 1-890-6229-203 SHIPPING...

    $400 USD
    Coffeyville, KS

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.