VPI Transformer

Key Features of VPI Transformer

High Thermal Endurance

The VPI transformers are designed and developed to deliver high efficiency even in high temperature applications. These transformers can manage thermal stress much more efficiently when compared to the oil type transformers. These transformers remain reliable in all types of environments.

Extended Transformer Winding Life

Due to the VPI process the insulation of the transformer winding is of highest quality. This protects the winding from all types of dust, contamination, and moisture ensuring the winding will not short and thus extending transformer life.

Available in Multiple Power Rating

VPI Transformer are available for wide range application in multiple power ratings. All sizes and power ratings offer the same level of thermal endurance, high performance, and reliability. 

Unlike oil type transformers where maintenance, noise and vibrations increase with size and power of the transformer, in VPI transformers these remain the same for all sizes and power ratings.

Minimum Maintenance Requirement

As there is no oil being used in the VPI transformer for insulation and cooling purposes, there is no probability of any type of oil leak or oil related maintenance work. 

This also means that all parts that an oil type transformer needs like transformer tank, conservator, and breather are not part of the VPI transformer. Less number of parts means less regular maintenance and less replacement of parts. 

Reduced Noise and Vibration Levels

VPI transformers are designed and developed in such a way that they operate very quietly as compared to a regular oil type transformer. Lack of an oil pump and other parts like this also reduce the noise and vibration level. This makes them the perfect transformer for use in noise sensitive areas.

Advantages of VPI Transformer

VPI transformers offer several advantages over conventional oil type transformers.

• VPI transformers are environment friendly as they does not need oil for insulation and heat transfer
• VPI are also consider eco friendly due to use of sustainable and recyclable materials
• Vacuum pressured resin covered windings have lower energy losses due to heat and environmental factors as compared conventional factors.
• High grade insulation of winding under vacuum pressure ensures lower risk of electrical faults and electrical shock.
• VPI transformers have a compact design as it does not need bog oil tanks for cooling and insulation. 
• VPI compact design offers space saving options for modern setups.

Applications of VPI Transformer

VPI transformers have quite wide applications and are currently installed in various industries for a number of reasons.

Manufacturing Plants

VPI transformers are used in manufacturing plants to meet the high power consumption demand of heavy machinery, manufacturing process, and automation systems. VPI transformer robust design ensure reliable performance in hard industrial environment

Big Commercial Building

In big commercial buildings that have a huge HVAC system running with all other systems like tubelights, and other electronics needs a dedicated transformer. VPI transformers are widely used in big commercial buildings due to their robustness and reliability.

Renewable Energy System

Step up and Step down VPI transformers are used in renewable energy generation systems ensuring stable power supply through the distribution system. Compact design of VPI transformers with low maintenance make them ideal for small to big renewable energy generation systems.

Critical Infrastructure Installations

VPI transformers due to their low noise level, safety,  and reliability are widely used in electrical systems of critical infrastructure like hospitals, data centers and cryptocurrency mining centers. These infrastructures need uninterrupted power supply and VPI are highly recommended for such applications.

Marine Applications

VPI transformers used resin to insulate windings and this also isolated winding from atmospheric factors. Due to this reason, these transformers are used in marine application as their resistance against moisture is the highest when compared to different types of transformers. They are considered ideal for ships, ports, and offshore installations.

Technical Specifications of VPI Transformer

Customization Options

VPI transformers have such a wide range of applications that one single transformer with fixed specifications cannot be recommended for all applications. So we offer several customizations options for our VPI transformer. 

Winding Material

Copper and aluminum are two basic materials being offered for VPI transformer winding. Copper is expensive with excellent conductivity, so used in high end expensive VPI transformers. Aluminum being less expensive with good conductivity is recommended for big transformers basically for transmission purpose.

Cooling Method

Depending on the application, size and power rating of the VPI transformer, it can be designed and developed with three different cooling methods

• Forced air methods. This method is recommended for open space, large size transformers that are mostly installed in outdoor and open space. 
• Direct Water Methods. Due to resin isolating the winding, water can be used to cool the winding. This method is recommended for medium size transformers with space constraints. 
• Heat Exchanger Method. A complete separate heat exchanger can be designed and utilized to cool VPI transformer winding. This method is Suitable for demanding industrial environments with high thermal requirements.

Enclosure Type

VPI transformers can be delivered in any NEMA ratings including most common NEMA 1, NEMA 3R and NEMA 4 ratings. NEMA 1 is recommended for indoor use with minimal exposure to the environment. NEMA 3R is suitable for outdoor use, protecting against rain and snow. 

NEMA 4 rating for VPI transformer enclosure is used for protection against water and dust, ideal for harsh environments. Additional NEMA-rated and specialty enclosure options available based on specific requirements.

Tapping

• OCTL (Off-Circuit Tap Link). Allows manual voltage adjustment when the transformer is not energized.
• OCTC (Off-Circuit Tap Changer). Permits voltage adjustment without full shutdown.
• OLTC (On-Load Tap Changer). Enables voltage regulation during operation for dynamic load conditions.

More resources: 

What Is An OLTC Transformer and How Does It Work?

What Is An NLTC Transformer and How Does It Work?

Insulation Class

VPI transformers can be delivered in two different insulation classes depending on the transformer size, voltage rating, power rating, and application. Insulation class F is suitable for standard transformer thermal performance whereas class H is for higher thermal endurance.

Customer Benefits

• Long-term cost savings through reduced maintenance and energy efficiency.
• Reliable performance even under demanding conditions.
• Scalable solutions to meet future energy demands.
• Improved operational safety and compliance.

Certifications & Standards

Daelim offers VPI transformers to customers around the globe. To ensure our transformer meets the expectations, our VPI transformers are designed and manufactured to ensure all international and regional standards. 

ISO (International Organization for Standardization)

We follow all ISO standards to ensure that our transformer manufacturing process aligns with the quality management system like ISO 9001, ensuring consistent quality and reliability.

IEEE (Institute of Electrical and Electronics Engineers)

Daelim Transformer follows IEEE standards for all its VPI transformer design. IEEE strict standards ensure reliable electrical equipment design and operational excellence.

More resource: Ultimate Guide To IEEE C57 Standard

IEC (International Electrotechnical Commission)

Following IEC protocols ensures global compatibility and adherence to industry benchmarks for performance, safety, and reliability.

More resource: The Ultimate Guide To IEC 60076 Standard

Certifications

Daelim Transformer has all the required global and local certifications to design, manufacture, deliver, install, and maintain VPI transformers all round the globe including  USA, Canada, Australia, Germany, and UK. Some of our certifications include CSA (Canadian Standards Association), UL (Underwriters Laboratories), CE (Conformité Européenne), and RoHS (Restriction of Hazardous Substances).

These certifications and compliance with standards ensure VPI transformers meet the diverse requirements of global markets while maintaining exceptional quality and safety.

Warranty & Support

At Daelim we offer VPI Transformer with the warranty coverage and after sale support which no other transformer manufacturer and supplier can offer. 

Standard Warranty

All our VPI transformers are provided with a 3 year standard warranty that covers any manufacturing defect and workmanship.

Extended Warranty

We also offer options for up to 10 years for additional warranty, subject to terms and conditions.

24/7 Helpline Support

At Daelim Transformer we offer all types of customer support 24/7 through our dedicated team of subject matter experts to address operational or trouble shooting concerns. 

After Sales Support

At Daelim Transformer we also offer complete after sales support including regular inspection of transformers, on site diagnostics, and preventive maintenance. This is done to ensure optimal performance and longevity of equipment installed. As part of our contract we offer fast access to genuine replacement parts for minimal downtime.

Now you have discovered how good and versatile Daelim VPI transformers are and how they can revolutionize your energy distribution systems. With our VPI transformer unparalleled efficiency, durability, and reliability, we are best in this business. 

Contact us today for expert guidance, personalized quotes, or to schedule a consultation with our team of specialists. Let us power your success!