2000KVA Oil Immersed Transformer: Selection, Discharge, Installation & Project Guide

2000KVA Oil Transformer Selection is a critical process for industrial power distribution projects that require stable, high-capacity performance and long-term operational reliability.

 

A 2000KVA oil immersed transformer is commonly deployed in medium-voltage substations, manufacturing facilities, mining operations, and commercial infrastructure developments where consistent load demand and grid stability are essential. Proper 2000KVA oil transformer selection involves evaluating voltage configuration, cooling method (ONAN or ONAF), vector group, insulation system, short-circuit strength, and installation environment. Without careful technical planning, improper specification may lead to overheating, voltage instability, or reduced service life.

 

This comprehensive guide explains how to approach 2000KVA oil transformer selection from an engineering and project perspective, covering discharge procedures, installation requirements, maintenance planning, and export considerations to help contractors, EPC companies, and procurement teams make informed decisions.

Learn more about GNEE 2000kva oil-filled transformers

 

 

The 2000KVA oil immersed transformer is a three-phase, liquid-cooled power transformer engineered to deliver 2 MVA of continuous apparent power in medium-voltage distribution networks. As one of the most widely adopted capacity classes in industrial and utility applications worldwide, this unit strikes an optimal balance between power handling capability and project economics. In our experience at GNEE, it is the preferred choice for:

 

• Substation main transformers stepping down 10 kV, 11 kV, 20 kV, or 35 kV to 400 V for commercial, residential, or mixed-load distribution.
• Industrial feeder transformers powering continuous-process manufacturing lines, mining operations, and petrochemical facilities.
• Renewable energy collector substations for grid-connected solar farms and wind power installations.
• Large commercial buildings including hospitals, data centers, airports, and university campuses.

 

Compared with dry-type alternatives, oil immersed structures provide superior heat dissipation and overload capability, making them especially well-suited for outdoor installations, high-load environments, and applications where long service life and low lifecycle cost are paramount.

 

Professional installation of a GNEE 2000KVA oil immersed transformer at a heavy industrial plant

 

 

At GNEE, every 2000KVA oil immersed transformer we manufacture is designed and tested in accordance with international standards including IEC 60076, IEEE, and ISO quality systems, ensuring safe operation and stable performance for global power projects. The following table consolidates the key technical data you will need during the specification phase.

 

GNEE 2000KVA Oil Immersed Transformer - Standard Technical Parameters

Parameter	Typical Value / Range	Remarks
Rated Capacity	2000 kVA (2 MVA)	Continuous full-load operation
Rated Frequency	50 Hz / 60 Hz	Selectable per regional grid standard
Primary Voltage (HV)	6 kV / 10 kV / 11 kV / 20 kV / 35 kV	Other voltages available on request
Secondary Voltage (LV)	0.4 kV (400 V)	Three-phase four-wire; 415 V, 480 V available
Vector Group	Dyn11	Also Yyn0, YNd1, Dyn5 upon request
Tap Changer	Off-circuit ±5% or ±2×2.5%	On-load tap changer (OLTC) optional
Cooling Method	ONAN (Oil Natural Air Natural)	ONAF (forced air) for enhanced capacity
No-Load Loss	≤ 1950 W (S13 series)	High-grade CRGO silicon steel core
Load Loss (at 75°C)	≤ 18,000 W (S13 series)	Copper winding as standard
Short-Circuit Impedance	4.5% – 6.5%	Per IEC 60076
No-Load Current	≤ 0.6%	Optimized magnetic circuit design
Winding Material	Electrolytic copper (Cu)	Aluminum winding optional for budget models
Insulating Oil	Mineral oil (IEC 60296)	Natural ester fluid optional (eco-friendly)
Total Weight (approx.)	5,240 kg	Oil weight included
Oil Volume	Approx. 1,200 kg	Hermetically sealed tank
Outline Dimensions (L×W×H)	Approx. 2,800 × 2,200 × 2,900 mm	Depending on radiator configuration
Sound Power Level (LWA)	≤ 59 dB	Suitable for urban distribution
Design Service Life	≥ 30 years	With proper maintenance
Applicable Standards	IEC 60076, GB 1094.1, GB/T 6451	CE, UL, ISO 9001 certified

Note: The above parameters represent standard configurations. GNEE specializes in custom-engineered transformers where voltage, impedance, losses, and accessories are matched exactly to your project specifications.

 

 

Selecting the right 2000KVA transformer requires more than checking capacity. Key parameters include:

 

 Voltage Level

Common configurations:

• 11kV / 0.4kV
• 13.8kV / 0.4kV
• 20kV / 0.4kV
• 33kV / 0.415kV

 

Voltage selection depends on:

• Grid input level
• Local utility requirements
• End-user load profile

 

Cooling Type

Most 2000KVA oil immersed transformers use:

• ONAN (Oil Natural Air Natural) cooling
• Optional ONAF for enhanced performance
• ONAN is typically sufficient for industrial substations operating under standard load conditions.

 

Vector Group

Common vector groups include:

• Dyn11
• Yyn0

Dyn11 is widely used for industrial applications due to its phase shift advantages and harmonic performance.

 

Standards & Compliance

For export projects, transformers are usually designed according to:

• IEC standards
• ANSI/IEEE standards (for American market)

Compliance affects insulation class, temperature rise limits, and testing procedures.

 

 

Because a 2000KVA transformer stores significant electrical energy, safe discharge is critical before maintenance or inspection.

 

Step 1: Full Power Isolation

• Disconnect from HV and LV sides
• Confirm zero voltage
• Implement lockout/tagout procedures

 

Step 2: Grounding

Residual charge may remain in:

• Windings
• Bushings
• Capacitive components

Use a properly rated insulated discharge rod and grounding cable to eliminate residual voltage.

 

Step 3: Cooling & Oil Stabilization

Due to large oil volume:

• Allow sufficient cooling time
• Monitor internal pressure
• Ensure safe oil temperature before opening inspection ports
• Improper discharge may lead to electric shock hazards and insulation damage.

For detailed engineering support or maintenance guidance, refer to our
👉 [2000KVA Oil Immersed Transformer Product Page]

 

 

 

Proper installation directly affects transformer lifespan and performance. Pre-commissioning tests should follow internationally recognized practices such as those defined by IEEE standards.

 

Foundation Requirements

• Reinforced concrete base
• Adequate load-bearing capacity
• Level tolerance within specified range

A 2000KVA oil immersed transformer typically weighs several tons, so structural planning is essential.

 

Ventilation & Clearance

Maintain adequate:

• Side clearance
• Top ventilation
• Safe maintenance access

Poor ventilation may cause overheating and reduce service life.

 

Oil Handling During Installation

If transported without full oil filling:

• Perform vacuum oil filling
• Conduct oil filtration
• Perform dielectric testing

 

Pre-Commissioning Tests

Before energizing:

• Insulation resistance test
• Turns ratio test
• Winding resistance test
• Oil dielectric strength test

These tests ensure reliability before grid connection.

 

 

Several factors influence pricing:

• Copper vs aluminum windings
• Core material grade
• Cooling configuration
• Tap changer type
• Testing requirements
• Export packaging
• Price varies significantly depending on technical specification and destination standards.
• For a detailed quotation based on your project requirements, contact our sales engineering team.

For a detailed explanation of transformer discharge principles and step-by-step safety procedures, you can also read our dedicated Transformer Discharge Guide.

 

 

 

A 2000KVA oil immersed transformer represents a long-term investment in your power distribution infrastructure-one that will operate for 30 years or more. Getting the technical specifications right from the start, paired with professional installation and commissioning, is the key to maximizing both reliability and return on investment.

 

At GNEE, we offer far more than just a transformer: we offer factory-direct pricing, expert engineering support, reliable project delivery, and a genuine manufacturing partnership. Whether you need a standard configuration or a fully customized design, our team is ready to turn your specifications into a high-performance transformer that meets the demands of your application.

 

Ready to start your project?

Contact GNEE today to get your personalized quotation and technical proposal

 

Request A Quote

 

How much does a 2000KVA oil immersed transformer cost?
The price depends on configuration-S11 vs. S13 vs. S22 efficiency grade, copper vs. aluminum winding, ONAN vs. ONAF cooling, and the specific voltage ratings. As a direct factory supplier, GNEE offers competitive factory-gate pricing. Contact our sales team with your technical specifications to receive a detailed quotation within 24 hours.

 

What is the typical oil capacity of a 2000KVA oil immersed transformer?
Oil capacity typically ranges from approximately 1,000 to 1,300 kg, depending on the tank and radiator design. We provide the exact oil quantity specification with every technical proposal.

 

Can the transformer be used at altitudes above 1,000 meters?
Yes. For installations above 1,000 meters, we apply appropriate derating calculations and insulation design adjustments. Simply specify your site elevation during the inquiry stage, and our engineering team will incorporate the necessary allowances.

 

Is 2000KVA suitable for medium-sized industrial plants?

Yes. It is commonly used for medium-scale industrial operations with moderate load demand.

 

What is the typical lifespan?

With proper installation and maintenance, service life can exceed 20 years.