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Special Power Transformer

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MOQ : 1 Unit

Special Power Transformer Specification

Dimension (L*W*H)
Customized based on rating and enclosure

Standard
IS 2026, IEC 60076

Voltage Booster Type
On-load/Off-load Tap Changer

Coil Material
Electrolytic Copper

Operating Temperature
-25C to +105C

Cooling Type
ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced)

Capacity
Up to 10,000 kVA

Low Voltage
400 V / 433 V (customizable)

Rated Voltage
11 kV / 22 kV / 33 kV or as per requirement

Load Loss
As per IS 2026 standards

High Voltage
Up to 33,000 V

Product Type
Special Power Transformer

Material
Copper

Output
Product wise

Frequency (MHz)
50 Hertz (HZ)

Efficiency
99.9%

Phase
Three Phase

Usage
Industrial power transmission and distribution

Coil Structure
Toroidal, Layer, or Sandwich Winding

Coil Number
2 or more (Primary and Secondary)

Power Scope
Up to 10 MVA and above

Weight
Depends on capacity (typically 800 kg to several tons)

Accessories
Oil level gauge, Breather, Buchholz relay, Temperature indicator

Cooling Medium
Mineral oil or synthetic oil

Service Life
25 years or more

Protection Level
IP23/IP54

Paint Finish
Powder coated/epoxy painted

Tap Range
5% in 2.5% steps or as required

Impedance Voltage
As per customer specification

Mounting Type
Floor Mounted

Insulation Class
Class A/B/F (as per requirement)

Noise Level
Below 60 dB

Winding Connection Type
Dyn11, Yyn0, etc.

Special Power Transformer Trade Information

Minimum Order Quantity
1 Unit

Supply Ability
100 Units Per Month

Delivery Time
2-3 Months

About Special Power Transformer

Special Power Transformer are offered for large power distribution system in 3 or 1 phase version with primary voltage up to 132 KV & secondary voltage ranging from 3.3 to 33 KV and capacity 3.15 to 20 MVA. We manufacture power distribution transformers and single phase power transformers.

Features of Special Power Transformer :

Optimum quality & Impeccable finish
Sturdy & Steely design to take care of frequent short circuits.
Broad process of wrinkle and siccative of coils resulting in a robust construction.
Step-up and Step-down transformers manufactured.
Manufactured with prime CRGO using step-lap design for low losses.
Various ratings type tested from National Accreditation Board for Testing and Calibration Laboratories (NABL) accredited labs.
'Tap Changer' options available.
"Off Circuit Manually Operated" and "On Load Tap Changer" (OLTC) with AVR and RTCC panel.
Prime quality, low loss, high permeability 'Cold Rolled Grain Oriented' silicon steel for core to achieve low no load losses.
Electrolytic copper with insulating paper multi covered round wires and strips for both the primary and secondary windings to achieve low load losses.
ONAN /ONAF cooling with conventional pressed steel radiators.
Terminal arrangement for primary and secondary as per site requirements.
Low viscosity transformer oil with in numerous superior grades for specific usage.

Superior Engineering for Demanding Applications

Our transformers offer exceptional resilience in industrial power transmission, featuring high-quality copper windings and customizable insulation classes. The design embraces modern standards like Dyn11/Yyn0 connections, modular mounting, and advanced protection (IP23/IP54). Rigorous adherence to IS 2026 and IEC 60076 ensures trouble-free operation, optimal efficiency, and robust performance in diverse environments.

Versatile Customization and Accessories

Every transformer is tailored to your operational requirements-from voltage and tap ranges to cooling options (ONAN/ONAF). Choose from accessories such as oil level gauges, Buchholz relays, and temperature indicators. Ruggedly finished in powder-coated or epoxy paint, our units withstand harsh conditions, making them suitable for demanding industrial sites throughout India and abroad.

Reliable and Efficient Long-Term Service

Engineered for longevity, these transformers deliver more than 25 years of reliable service, backed by industry benchmarks. Their impressive noise reduction (below 60 dB) and efficiencies up to 99.9% translate into quieter, cost-effective operation. Advanced cooling and protection systems protect your investment across years of heavy-duty use.

FAQ's of Special Power Transformer:

Q: How do the insulation classes (A/B/F) benefit industrial transformer applications?

A: Insulation classes A, B, and F determine the transformer's thermal endurance. They safeguard the unit against overheating and ensure prolonged service life, accommodating various environmental and load conditions. Selection depends on the operational temperature range and industry standards tailored to customer requirements.

Q: What makes Dyn11 and Yyn0 winding connections advantageous for energy distribution?

A: Dyn11 and Yyn0 winding configurations offer enhanced phase balancing and flexibility in voltage regulation. They help reduce harmonics and enhance compatibility with different grid systems, ensuring stable and efficient power delivery in diverse industrial settings.

Q: When should I opt for IP23 versus IP54 protection levels?

A: IP23 is suitable for typical indoor installations where there's limited exposure to moisture or dust, while IP54 is ideal for environments requiring extra protection against water spray and dust ingress. The choice will depend on your site's specific environmental and safety requirements.

Q: Where are these special power transformers commonly used?

A: These transformers are extensively deployed in industrial power transmission and distribution networks-spanning manufacturing plants, utility substations, and large infrastructure projects in India and abroad-where reliability and efficiency are critical.

Q: What is the process for customizing voltage ratings and dimensions?

A: Customization begins with a detailed consultation regarding power capacity, voltage, and environmental demands. Based on this, we design and manufacture the transformer to precise dimensions and electrical specifications, ensuring a perfect match for your application.

Q: How do the included accessories enhance transformer performance and safety?

A: Essential accessories such as oil level gauges, Buchholz relays, and temperature indicators enable routine monitoring and rapid response to faults or abnormal conditions, significantly increasing operational safety and reducing downtime.

Q: What benefits do advanced cooling systems like ONAN and ONAF provide?

A: ONAN (Oil Natural Air Natural) and ONAF (Oil Natural Air Forced) cooling methods efficiently manage heat dissipation. These systems help maintain safe operating temperatures, ensuring uninterrupted high performance, especially under fluctuating or heavy load conditions.

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