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JST Power Equipment

Power Transformer

The JST Power Equipment Small & Medium Power Series is a liquid-filled power transformer rated up to 500 kV for substation and transmission duty, sold and supported in Texas and Oklahoma and on data center projects nationwide by Ryan Sales.

  • 5 MVA - 600 MVA (with fans)
  • up to 500 kV
  • BIL up to 1800 kV
  • IEEE/IEC/ANSI
  • ISO 9001
Overview

JST manufactures power transformers from 5 MVA to 600 MVA (with fans) at voltages up to 500 kV with 1800 kV BIL, built to IEEE, IEC, and ANSI standards under ISO 9001 quality systems. Buyers can specify mineral oil, natural ester, or synthetic dielectric coolants, plus no-load or on-load tap changers. Robust construction supports harsh industrial conditions, with manufacturing weights up to 100 tons and industry-leading lead times.

Specifications
Maximum voltageUp to 500 kV
BILUp to 1800 kV
MVA range5–600 (with fans) MVA
CoolingMineral oil / natural ester / synthetic coolant
Tap changerNLTC / OLTC available
Maximum weight100 tons
CertificationsISO 9001
StandardsIEEE / IEC / ANSI

Ratings from manufacturer data. Confirm your configuration with a rep.

Applications
  • Power generation
  • Transmission
  • Distribution substations
  • Solar and wind collector substations
  • Data centers
  • Rail systems
  • Industrial facilities
Spec sheets & documents
Frequently asked questions
Who sells the JST Power Equipment Power Transformer in Texas?

Ryan Sales, a manufacturers' representative based in Magnolia, Texas, sells the JST Power Equipment Power Transformer and supports customers across Texas and Oklahoma and on data center projects nationwide through regional reps. Call (281) 363-1106 or request a quote on this page.

What MVA and voltage range do JST Power Equipment power transformers cover?

JST power transformers range from 5 MVA to 600 MVA (with fans) at voltages up to 500 kV and BIL up to 1800 kV. They are built to IEEE, IEC and ANSI standards under ISO 9001 quality systems, with manufacturing weights up to 100 tons.

What coolant and tap changer options are available on JST power transformers?

Buyers can specify mineral oil, natural ester or synthetic dielectric coolant, and choose a no-load tap changer (NLTC) or on-load tap changer (OLTC). The transformers serve generation, transmission, distribution substations, solar and wind collector substations, data centers, rail systems and industrial facilities.

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