Pad mounted transformers

Pad Mounted Transformers
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Alfa Transformer stocks new and reconditioned, three-phase, tamper-resistant, pad mounted transformers through 3000 KVA. New transformers can ship immediately while most reconditioned units can ship in as little as a few days.

quick ship program

  • New, Three-Phase Pad Mounted Transformers
  • Lead Times: Stock to 2 weeks, 2-4 weeks, and 4-6 weeks
  • 150-2500 KVA (480Y/277)
  • 150-1000 KVA (208Y/120)
  • HV: 14400, 13800, 13500, 13200, 12840, 12470, 12000
  • FR3 fluid filled
  • Dead front, loop feed
  • Primary wells and inserts
  • Secondary spade terminals
  • Bayonet fusing in series with ELSP fuses
  • Two-position "on/off" loadbreak switch
  • De-energized 7-position tap changer
  • Pressure relief valve
  • 65°C rise
  • 60 cycles
  • DOE compliant
  • FM Approved (outdoor)
  • UL Listed

built-to-spec pad mounted transformers - standard features*

  • To 5000 KVA
  • HV up to 34.5 kV
  • LV up to 600V
  • Lead Times**: Typically 8-10 weeks on units 2500 KVA and below
  • Lead Times**: Typically 10-12 weeks on units 2501 to 3750 KVA
  • Lead Times**: Typically 12-16 weeks on units above 3750 KVA
  • Mineral oil
  • 65ºC temperature rise
  • Operating altitude - 3,280 ft AMSL (1000m)
  • Live or dead front
  • Loop or radial feed
  • Secondary spade terminals
  • De-energized tap changer
  • Door locking mechanism
  • Pentahead bolt(s) on cabinet doors
  • Grounding pads
  • Pressure relief valve
  • Upper fill plug
  • Drain valve with sample port
  • Non-PCB identification
  • Standard "pad mount green" paint
  • Manufactured and tested per applicable ANSI and NEMA standards
  • DOE 2016 energy efficiency standards on non-exempt units

built-to-spec pad mounted transformers - optional features*

  • FR3 fluid (or equal)
  • 55/65ºC temperature rise
  • Feed thru inserts on dead front units
  • Bayonet fusing
  • Under oil partial range current limiting fuses
  • Weak link fuses
  • Two or four-position loadbreak switch
  • Liquid level gauge
  • Temperature gauge
  • Pressure/vacuum gauge
  • Gauges with alarm contacts
  • Cover-mounted pressure relief device
  • Upper fill valve
  • Step-up duty
  • Other ratings, features, and accessories available on request
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* Features and accessories may vary on non-new and 'in stock' transformers.
** Lead times vary.