Three Phase Distribution Transformers

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Voltage Booster Type Standard tap changer (off-circuit/oil-immersed)
High Voltage 11kV / 22kV / 33kV
Standard IS 1180 (Part 1): 2014, IS 2026
Operating Temperature -5C to +50C
Load Loss As per IS 1180: 2014 specified values (e.g., 480 W at 100 kVA)
Capacity From 25 kVA up to 2500 kVA (as per customer requirement)
Dimension (L*W*H) Varies with capacity (Example for 100 kVA: Approx. 1100 x 900 x 1250 mm)
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Three Phase Distribution Transformers Price And Quantity

Minimum Order Quantity 1 Unit

Three Phase Distribution Transformers Product Specifications

Voltage Booster Type Standard tap changer (off-circuit/oil-immersed)
Standard IS 1180 (Part 1): 2014, IS 2026
High Voltage 11kV / 22kV / 33kV
Capacity From 25 kVA up to 2500 kVA (as per customer requirement)
Dimension (L*W*H) Varies with capacity (Example for 100 kVA: Approx. 1100 x 900 x 1250 mm)
Rated Voltage Primary: 11kV/22kV/33kV, Secondary: 415V/433V
Coil Number Two (Primary and Secondary Windings)
Cooling Type ONAN (Oil Natural Air Natural)
Weight Depends on rating (e.g., 800 kg for 100 kVA, 2200 kg for 500 kVA)
Coil Material High conductivity electrolytic copper / Aluminium
Operating Temperature -5C to +50C
Frequency (MHz) 50-60 Hertz (HZ)
Power Scope 11kV/22kV/33kV class, customized ratings available
Material Mild Steel
Phase Three Phase
Coil Structure Toroidal / Wound
Output As per rating (e.g., 100 kVA, 250 kVA, 500 kVA, 1000 kVA, etc.)
Product Type Electrical Transformer
Efficiency Over 98%
Load Loss As per IS 1180: 2014 specified values (e.g., 480 W at 100 kVA)
Usage Industrial
Low Voltage 415V / 433V

Impedance Voltage 4.5% (for 100 kVA @ 11kV) - varies with rating
Insulation Class Class A / F as per standard
No Load Loss As per IS standard (e.g., 190 W for 100 kVA)
Earthing Terminal 2 Nos. provided
Oil Quality Transformer oil as per IS 335
Paint Finish Epoxy/PU/Polyester powder-coated, anti-corrosive
Cooling Oil Quantity Varies by rating (e.g., 70 litres for 100 kVA)
Core Type CRGO Laminated, Step-lap design
Short Circuit Withstand Designed for 2 seconds as per relevant IS
Protection HT fuse, LT ACB/ MCCB, Buchholz relay (for large units)
Service Life 25 years (typical, with proper maintenance)
Winding Connection Dyn11 / Yyn0 / others as per specification
Safety Features Pressure relief valve, Silica gel breather, Oil level indicator
Mounting Arrangement Pole / Plinth / Pad mounted (as required)
Maximum Humidity 95% RH non-condensing
Tank Type Hermetically sealed/Conservator type

Three Phase Distribution Transformers Trade Information

Payment Terms Cash Advance (CA)
Supply Ability 10 Unit Per Month
Delivery Time 7-10 Days
Main Domestic Market All India

Product Description

Three Phase Distribution Transformers are power distribution network electrical transformers that convert high voltage energy to low voltage power for use in homes, businesses, and industrial purposes. They are designed to support three-phase electrical power and feature three primary and three secondary windings. These transformers, which are often located on utility poles or in electrical substations, are utilized to deliver power to various consumers. They are available in a variety of sizes and ratings to meet the specific needs of various applications. Three Phase Distribution Transformers are crucial components of the electrical grid, and their efficient operation is required for dependable energy distribution.

Reliable Industrial Power Delivery

These transformers deliver robust power distribution for a range of industrial applications, supporting a span of voltages (11kV/22kV/33kV primary, 415V/433V secondary) and capacities up to 2500 kVA. Engineered for seamless operation, their superior winding and core structure ensure high performance and minimal losses, even at peak loads.

Engineered for Durability and Safety

Constructed with mild steel tanks and advanced epoxy/PU/polyester powder-coated finishes, these transformers resist corrosion and tough weather. Safety is reinforced with HT fuse, LT ACB/MCCB, Buchholz relays for larger units, pressure relief valves, and silica gel breathers, making them ideal for demanding industrial environments.

Compliance with Indian Standards

Fully conforming to IS 1180 and IS 2026, these transformers guarantee standardized performance and safety. Each unit is designed and tested for 2-second short-circuit withstand, maintains losses as per IS, and is built with high-quality copper or aluminium windings, providing assurance in both quality and efficiency.

FAQ's of Three Phase Distribution Transformers:

Q: How does the step-lap CRGO laminated core design benefit transformer performance?

A: The step-lap CRGO laminated core minimizes core losses and enhances magnetic flux distribution, resulting in greater efficiency and reduced noise. This design also contributes to improved transformer reliability and longer service life by decreasing hot-spot temperatures during operation.

Q: What safety features are incorporated in these distribution transformers?

A: Safety features include HT fuses, LT ACB/MCCB circuit breakers, Buchholz relays (for larger ratings), pressure relief valves, silica gel breathers, oil level indicators, and dual earthing terminals, ensuring protection against faults, overheating, and pressure build-up.

Q: When should transformer oil be checked or replaced?

A: Transformer oil, compliant with IS 335, should be regularly checked for dielectric strength, moisture content, and contamination. Routine inspections are typically scheduled annually, but conditions or critical operation may necessitate more frequent testing or replacement.

Q: Where can these transformers be mounted for operation?

A: These distribution transformers support versatile mounting arrangements, including pole, plinth, or pad-mounted installations, allowing integration into diverse infrastructure projects-industrial facilities, utility distribution grids, and remote locations as required.

Q: What is the typical service life of these transformers with proper maintenance?

A: With recommended maintenance and regular inspections, these transformers provide a typical operational service life of up to 25 years, contributing to long-term cost savings, reliability, and uninterrupted power supply.

Q: How do the voltage ratings and capacities vary to match different applications?

A: The transformers are available in a range of rated voltages-primary (11kV, 22kV, 33kV) and secondary (415V, 433V)-and capacities (25 kVA to 2500 kVA). Customization options ensure that each unit matches specific application requirements, from small commercial loads to heavy industrial usage.

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