Substation Transformers

These types of transformers are an integral part of compact substations which fully encloses a transformer, HV and LV connections or switchgear, and is shipped to site fully assembled. These are widely used in areas where underground power distribution is required, such as in residential, commercial and industrial developments.

Utec’s Substation Distribution Transformers are oil immersed hermetically sealed type. Flexible corrugated tank walls or radiators enable sufficient cooling of the transformer during operation. Generally HV and LV bushings are mounted on bolted top cover. HV bushings are Plug-In type while LV flat bars type. The Porcelain type bushings can also be supplied as per customer requirement.

The windings are generally made up of copper. However, Aluminum windings can also be offered. All the standard designs have been proven by type testing including impulse, temperature rise, sound level and short circuit tests. Utes’s substation distribution transformers share the following features:

• High integrity, compact design and aesthetic appearance.
• Portable.
• Weather and vermin proof.
• High security
• Economic and efficient to reduce operation cost.
• Safe, reliable and easy for operation.
• Sealed construction to prevent the entry of moisture.
• Low temperature rise and long service life.
• Low noise.
• Utec’s standard proven surface treatment.
• Robust construction for long time transportation under various conditions.
• Flexibility in designing transformers to meet customer requirements (Optimum cost)
• Competitive short delivery time.

Product Range:

• Rating up to 4.0 MVA (Three Phase)
• Primary voltage up to 36 kV
• Secondary voltages up to 1000V
• Frequency: 60Hz, 50Hz, 50/60Hz
• Vector group: Dyn11 (other vector groups can also be provided on request)
• Insulation: Class A
• Cooling: ONAN / KNAN
• Available fluids: mineral or silicon oil (Other fluids can also be filled on request)

Standard Accessories:

• HV Bushings
• LV Bushings
• Dial Type Oil Thermometer
• Pressure Relief Device
• Oil Level Indicator With Filler Stack
• Off-circuit Tapselector
• Oil Drain Valve
• Earthing Terminals
• Lifting Lugs

Optional Accessories (If required):

• Dial Type Oil Thermometer With Two Contacts
• Pressure Relief Device With Two Contacts
• Oil Level Indicator With Two Contacts
• Winding Temperature Indicator with Two Contacts.
• Thermometer Pocket
• Filter Valve
• Marshaling Box
• DMCR Protection Relay (DGPT2)