K K electrical services

A 1000 kVA (or 1 MVA) transformer is a high-capacity electrical transformer used for power distribution in industrial and commercial settings. Common types include oil-cooled and dry-type models, each with specific applications. New and used models are available from various manufacturers and suppliers.

Common specifications for 1000 kVA transformers

Because a 1000 kVA transformer is a substantial piece of equipment, many aspects of its design are customizable to meet specific operational requirements. Specifications will vary by manufacturer and model, but here are some common examples based on search results.

For oil-cooled units

Power rating: 1000 kVA (1 MVA)

Cooling type: ONAN (Oil Natural Air Natural)

Vector group: Dyn11

Winding material: Aluminum or copper

Temperature rise in oil: 60°C

Efficiency: ~99.19%

No-load loss: 1150W

A 500 kVA transformer is an electrical power transformer with a rated apparent power of 500 kilovolt-amperes. They are typically used for industrial production, commercial centers, or large residential areas to convert high-voltage electricity to a lower, usable voltage. They are available in various types based on their phase, cooling method, and winding material.

Types of 500 kVA transformers

Based on cooling medium:

Oil-immersed/oil-cooled transformer: Uses mineral or vegetable oil for cooling and insulation. These are commonly available and are typically installed outdoors.

Dry-type/air-cooled transformer: Uses air as the cooling medium and is safer for indoor installations, like in commercial and high-rise buildings. They are generally more expensive than oil-cooled types.

Gas-insulated transformer: Uses a synthetic gas, such as SF6, as the insulating and cooling medium. They have a compact size and are fireproof, making them suitable for underground substations, but can be less eco-friendly.

Based on phase:

Three-phase transformer: Most common for commercial and industrial applications, as it handles the step-up and step-down of three-phase power systems.

Single-phase transformer: Can be used in single-phase power systems. 

• Capacity: 1000 KVA for high power needs
• Compact Design: Saves space and facilitates easy installation
• Durable Construction: Built to withstand rugged industrial environments
• Efficient Cooling System: Ensures optimal performance
• Comprehensive Protection: Equipped with safety features for peace of mind

• Approved by HTMC, UGVCL, MGVCL, PGVCL, and All India
• Meets all necessary standards for safety and efficiency
• Durable and long-lasting construction
• Ideal for B2B use in electrical installations
• Compact design for easy integration

• 1000KVA capacity for large-scale power distribution
• High efficiency to optimize energy usage
• Ideal for commercial and industrial solar setups
• Durable construction for long-lasting performance
• Ensures reliable electricity supply for your operations

1000 kVA dry-type transformers are typically used in commercial, industrial, and institutional settings where fire safety and environmental concerns are a priority, such as hospitals, high-rise buildings, and data centers. They utilize air or solid insulation instead of oil for cooling.

Types of 1000 kVA dry-type transformers

Cast resin transformers: The windings are encapsulated in epoxy resin, offering superior protection against humidity and a high resistance to short-circuit currents. For example, the Trihal Cast Resin dry type transformer 1000 kVA from Schneider Electric is a 3-phase model rated for 20 kV primary voltage.

Vacuum Pressure Impregnated (VPI) transformers: The coils are impregnated with a varnish in a vacuum, which creates a highly durable and moisture-resistant insulation system. These are often used where high reliability is required.

Amorphous alloy core dry-type transformers: These feature a core made from an amorphous alloy, which offers lower operating noise and minimal losses.