(870) 534-5332

Central Moloney, Inc. manufactures a complete line of single-phase submersible transformers, including subway and vault-type, for a multitude of requirements. Our submersible transformers are designed and manufactured in compliance with ANSI Standard C57.12.32-1994 (or latest revision) and/or customer specification.

The submersible product line is designed for frequent or continuous submerged operation. Central Moloney’s submersible transformers are installed completely underground, which allows front lot construction with easy and less expensive accessibility.

Standard Features & AccessoriesOptional Features, Accessories and Design StandardsProduct ScopeFactory Stocking Program

  Meets or exceeds latest applicable ANSI and NEMA standards as applicable

  Shell-form core designs

  Mild steel construction

  Welded cover and tank construction is standard

  All coils are wound with adhesive coated Kraft layer insulation

  J-bolt frame and blocking add to short circuit withstand

  In-house short circuit testing capability allows for audit testing as required

  Non-interlaced low voltages

  Molded polymer high voltage bushing wells

  Molded polymer low voltage bushings with threaded studs or spade termination

  Continuous welding of lifting lugs and ground bosses

  Low voltage grounding provisions

  Low voltage bushing ground strap on one bushing units

  Automatic pressure relief valve to safely relieve internal pressure

  Mineral oil with inhibitor

  Tank grounding provision

  Tank grounding connector when required

  Laser-engraved stainless steel nameplate

  KVA marking on tank


  Total 409 or 304 series stainless steel designs are available

  Lightning arrester internally mounted under oil

  Current limiting fuses

  Bayonet fuses

  Loadbreak switches

  High voltage inserts

  Banded cover

  Molded polymer low voltage bushings with cable leads made to customer’s specified length

  High voltage taps are available

  Dual high voltage switch with external operating handle

  Low voltage circuit breaker on self-protected units with internal block mounted high voltage expulsion fuse(s)

  Interlaced low-voltage windings

  Emergency overload reset handle (available only on self-protected transformers)

  Custom stenciling and labeling

  FR3 Fluids

  NEMA TP-1 compliant designs

  DOE Efficiency Ruling compliant designs available

 15 kVA through 500 kVA

 Primary voltages through 19920 kV 150 BIL

 Secondary voltages through 600 V

 55° C rise rating