Transformers - Unimacts

Distribution Transformers

Compact and efficient for steady power delivery. 10 kVA – 5 MVA (up to 34.5 kV). Hermetically sealed or corrugated radiator cooling. Oil-filled and dry-type options built through Unimacts for quality and consistency.

Specifications

Duty, Type Outdoor / Indoor
Voltage Class 13.8kV-34.5kV
No of Phases 3Ph
Frequency 60Hz
Vector Group Dyn5 or Dyn11, Ynyn0 or Customer specific
Insulating Fluid Oil
Class of Insulation Class A
Tap Changer OFTC or OLTC
Tapping Range ±2.5% × 2 steps (typical) / As per spec.
Winding Material Aluminium / Copper
Applicable Standards IEC60076, ANSI, Ecodesign, AS/NZS, BS
Painting Enamel, Epoxy, Polyurethane or Customer Specific

Power Transformers

High-capacity solutions for utility and generation projects. Up to 500 MVA / 765 kV with OLTC designs. Tested 220 kV ester-oil models delivered through Unimacts for proven performance and bankability

Specifications

Duty, Type Outdoor
Voltage Class 115kV-765kV
No of Phases 3Ph
Frequency 60Hz
Vector Group Dyn5 or Dyn11, Ynyn0 or Customer specific
Insulating Fluid Oil
Class of Insulation Class A-H
Tap Changer OLTC with RTCC
Tapping Range ±5% to ±10% in 1.25% steps / As per spec.
Winding Material Copper
Applicable Standards IEC60076, ANSI, Ecodesign, AS/NZS, BS
Painting Enamel, Epoxy, Polyurethane or Customer Specific

Pad-Mounted Transformers

Pre-engineered for renewables and urban networks. Up to 10 MVA / 34.5 kV class. Oil- cooled, tamper-proof designs. Factory-tested through Unimacts for long service life and easy installation.

Specifications

Duty, Type Outdoor
Voltage Class 13.8kV-34.5kV
No of Phases 3Ph
Frequency 60Hz
Vector Group Dyn5 or Dyn11, Ynyn0 or Customer specific
Insulating Fluid Oil
Class of Insulation Class A
Tap Changer OFTC or OLTC
Tapping Range As per customer specs.
Winding Material Aluminium / Copper
Applicable Standards IEC 60076, ANSI, Ecodesign, AS/NZS, BS
Painting Enamel, Epoxy, Polyurethane or Customer Specific

Dry-Type Transformers

Safe, maintenance-free indoor solutions. 13.8 – 34.5 kV range, copper windings, epoxy or polyester finish. Manufactured through Unimacts for fire-safe and space- efficient applications.

Specifications

Duty, Type Indoor
Voltage Class 13.8kV-34.5kV
No of Phases 3Ph
Frequency 60Hz
Vector Group Dyn5 or Dyn11, Ynyn0 or Customer specific
Insulating Fluid NA
Class of Insulation Class F/H
Tap Changer OFTC
Tapping Range ±5% (typical) / As per Spec
Winding Material Copper
Applicable Standards IEC60076, ANSI, Ecodesign, AS/NZS, BS
Painting Epoxy, Polyster or Customer Specific

Inverter-Duty Transformers

Purpose-built for solar and wind energy. Handles variable loads efficiently up to 34.5 kV. Copper or aluminum windings. Optimized through Unimacts for renewable integration.

Specifications

Duty, Type Indoor, Outdoor
Voltage Class 13.8kV-34.5kV
No of Phases 3Ph
Frequency 60Hz
Vector Group Dyn5 or Dyn11, Ynyn0 or Customer specific
Insulating Fluid Oil
Class of Insulation Class A/B
Tap Changer OFTC or OLTC
Tapping Range As per customer specs.
Winding Material Copper
Applicable Standards IEC60076, IEC61378, Ecodesign
Painting Enamel, Epoxy, Powder coating or Customer Specific

Oil-Filled Transformers

Proven endurance for heavy-duty projects. Up to 160 MVA / 220 kV, copper or aluminum wound. Ester and mineral oil options are produced through Unimacts for sustainable grid operations.