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General Purpose Ventilated Transformers
Olsun Electrics General Purpose Ventilated Single (GS) phase and Three (GT) phase power transformers are the high quality constructed and DOE efficient units the industry has come to expect from Olsun for supplying power to electrical distribution systems. Olsun’s general purpose products include not only conventional voltage combinations but feature a special emphasis on non-standard voltage arrangements for those unique voltage applications. All products are designed, manufactured and tested in accordance with applicable UL, cUL, NEMA, IEEE and ANSI standards. Efficiency levels at or above DOE 2016 requirements and sound levels at or below NEMA ST-20 referenced standards make Olsun GS and GT products the preferred choice. Quickly customizable, high quality, quiet operation, extreme durability and long life reliability are only a few of the benefits included and what you’ve come to expect from Olsun Electrics General Purpose transformers.
Power Rating: 15kVA through 250kVA, Single Phase [higher available]
15kVA through 250kVA, Single Phase [higher available]
UL Listing: File E78350
Efficiency Rating: Per DOE 2016
Voltages: Primary & Secondary combinations through 600 Volts
BIL Ratings: Standard 10 kV [higher available]
Frequencies: 50 or 60 Hertz [others available]
Windings: Aluminum (standard) or Copper
Temperature Rise: 80°, 115° or 150°C [others available]
Insulation System: 220°C
Enclosures: NEMA 1 or NEMA 3R
[pad mounted high security and others available]
Color: Baked on powder coat ANSI 61 Gray
[custom colors readily available]
K Ratings: None (K1) standard. K4, K9, K13, K20 available
Terminations: < 50 kVA bottom terminated, > 75 kVA top terminated
Taps: Primary, standard typical +2/-2 at 2.5% [others available]
Core: High quality non-aging grain oriented electrical grade steel
Impregnation: Standard resin sealed, dipped and baked
Lead Times: 3-4 weeks standard, 4-5 weeks custom designs
Power Rating: 15kVA through 500kVA [Single Phase]
15kVA through 750kVA [Three Phase]
Voltages: All Combinations through 15kV
BIL Ratings: ALL through 95kV
Frequencies: 50 or 60 Hertz
These transformers have compact dimensions for mounting either indoors or outdoors. They can be mounted as close to the load as possible to minimize secondary cable runs.
Current technology yields a dry type transformer that is fully equal to its mineral oil counterpart. Dry types excel in several important aspects. They can be located indoors without the use of a fireproof vault or special catch basins, on roofs, near buildings or anywhere within an industrial or commercial building. Industry standards have been developed to give users better yardsticks for specification and purchasing. The latest standard, set forth by Underwriters Laboratory (UL), encompasses those developed by IEEE, NEMA, ANSI and various other agencies. Olsun Medium Voltage Transformers are all tested and built to these rigid specifications and assure the purchaser of reliability, safety and value. These Olsun transformers are economical, can be outdoors with little concern for moisture in severe environments and are environmentally safe.
A solid ground connection is made between the core, the core clamping members and the transformer mounting members. A flexible copper strap grounds the enclosure to the transformer mounting members. This ground point may be used to ground the neutral of the secondary, if desired, and/or to ground to the building ground. An external ground lug or stud will be provided if requested.