Medium Power Substation

Medium Power Substation

Howard Power Solutions' medium power substation transformers are designed and built to provide outstanding performance and reliability in the most demanding utility and industrial applications. Our current product scope includes ONAN/ONAF ratings up to 60/112 MVA with primary voltage ratings through 230 kV. An extensive range of features and accessories are available, including GSU units, Autotransformers, Dual voltage units, on-load tap changers, forced-air cooling systems, different types of fluid preservations systems, and other options to satisfy the special requirements of virtually any application. Our experienced design engineers employ the latest available computer-based design tools, including 3D CAD-parametric modeling, and finite element analysis, to ensure that our transformers perform as intended. Our new manufacturing facility was designed and built specifically for the efficient production of medium power transformers and is equipped with the latest available technologies including the vapor phase drying process, and test station capable to perform all tests per current IEEE standards.

Howard Industries manufactures a complete line of transformers, all designed with increased margins of safety and reliability. Contact your distributor or factory representative for availability of other kVA sizes, voltage ratings, features, accessories and design standards not listed.

Talk to us about filling a custom order that best fits your needs.


Manual de-energized tap changer with padlocking provisions
cover mount bushings
control box
Transformer lifting lugs
Dial-type fluid level gauge
Dial-type fluid temperature gauge with resettable min/max drag hand
Dial-type pressure/vacuum gauge
Dial-type winding temperature gauge for forced-cooled transformers
Automatic pressure relief device
Laser-engraved diagrammatic nameplate
Tank grounding pads
Base construction suitable for skidding in all directions
Jacking provisions
Fluid fill valve
Fluid drain valve
Sealed-tank fluid preservation system
Mineral oil dielectric fluid
High efficiency design with optimum combination of price and operating cost
Cylindrical coil construction
Mitered cruciform core construction
Vapor-phase coil active part drying process
Transformers meet or exceed the requirements of all applicable ANSI, IEEE, and NEMA standards
Bushing-mounted current transformers
Surge arresters and mounting brackets
High-voltage and/or low-voltage terminal compartments
Wye-delta or series multiple terminal connections
Provisions for forced air cooling
Forced air cooling with automatic control system
Inert gas fluid preservation system or air bladder conservator fluid preservation system
Dial-type winding temperature gauge (standard for forced-cooled transformers)
Electronic temperature indicator
Fiber-optic winding temperature indicator
On-load tap changer with microprocessor-based control
Natural or synthetic ester dielectric fluid
Power: 60/112 MVA, ONAN/ONAF, VOLTAGES UP TO 230 KV, 900 KV BIL