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Adobe Flash Player not installed or older than 9.0.115!  PTI's high Voltage padmount Transformer, (66kV unit shown), is suitable for serving distribution loads directly from 46kV and higher sub-transmission systems. This patented design enables Utilities to service customers at voltages at or above 46kV at substantially less cost than building new distribution stations. The concept eliminates the need for station structures and fenced switchyards and provides considerable savings in construction and maintenance costs.
The HV Padmount does not change how voltage transformation occurs, it changes the way a high voltage transformer is connected to the system. Using the patented HV padmount design in what we are now calling a Distribution Supply Center or DSC, will allow customers to be served at a significant cost saving when compared to building a conventional distribution sub station. The new concept uses an HV pole mounted switch and HV Fuse structure. Combined with other padmounted secondary devices, the DSC eliminates the need for a large station structure, station yard, and fence.
Design features incorporate the ability to ship on a standard trailer completely assembled. This eliminates any onsite transformer erecting and Oil processing. Installation or removal is easy as the design allows both HV and LV cable Terminations to be left in place. Sizes are available in the standard configuration to 10 MVA at 138 kV, 650BIL. Short Circuit Testing by KEMA has been successfully performed on a 10 MVA, 66 kV design. High Voltage; Low MaintenanceRatings Range: 2500 kVA to 10 MVA * dual Volt also available The HV Padmount uses sealed tank construction with a blanket of dry nitrogen above the oil. Safe to the Public; Safe from the PublicIn a tamperproof enclosure, the HV Padmount is safe from damage from the elements, humans and wildlife. The public is also protected without the need for fencing. Appropriate grounding designs exceed the requirements of IEEE 80 to ensure public safety with respect to step and touch potential. Maximized Efficiency; Minimized FootprintA Distribution Supply Center includes:
Combined with other pad-mounted secondary devices, the DSC eliminates the need for a large station structure, station yard and fence. The compact modular design allows the HV Padmount to be installed in spaces as small as a residential lot. Back to the FutureWith rising property costs, utilities have turned to fewer, larger stations with longer feeders. They often require capacitors and regulators for voltage support. The processes of design, approval and installation are lengthy with costs escalating over time. The DSC reverses these trends. Instead, small and inexpensive installations to fit in minimal spaces. Shorter feeders minimize voltage drop, losses, and increases reliability. Short-Circuit Test
Transformer Information: Rating: Three- Phase, 5000 kVA - 60 Hz Outline DrawingHV Padmount Typical SpecProduct Brief |
April 2003 - A Short-Circuit Withstand Test was carried out on a PTI Power Transformer by KEMA - Powertest Inc. The test was performed in accordance with IEEE C57.12.00-2000 and C57.12.90-1999. The transformer complied with the series of relevant short-circuit applications. The test verified the PTI power transformer design and construction to withstand mechanical and thermal stresses produced under external short-circuit conditions.