2000 kVA Transformer: A Comprehensive Guide

A 2000 kVA (kilo-Volt-Ampere) transformer is a critical component in electrical power distribution systems. These transformers are designed to handle a high capacity of electrical energy, specifically 2000 kilo-volt-amperes. In essence, a transformer of this capacity functions to modify electrical voltage and current levels, adapting them to the needs of the system it serves. The "kVA" rating indicates the transformer's apparent power handling capability, encompassing both real and reactive power.

 

In power distribution systems, 2000 kVA transformers play a pivotal role. They are often employed in medium to large-scale industrial, commercial, and utility applications. These transformers can step down high transmission voltages to lower levels suitable for commercial or industrial use, or vice versa, ensuring efficient transmission and minimizing power loss.

 

 

 

2000kva oil-immersed transformer consists of iron core, low voltage coil, high voltage coil, body insulation, high and low voltage leads, voltage regulating switch, oil tank, bushing and other accessories.

 

The 2000kva oil-immersed transformer adopts a three-phase wound iron core structure, and the iron core material is made of high-quality grain-oriented magnetic silicon steel sheet.

 

The iron core is manufactured with advanced technology, with low loss and low noise. The structure is fully considered to reduce loss and overexcitation to meet the requirements of heat dissipation and transportation. The grounding of the iron core is led out from the top of the fuel tank by a bushing with a power frequency withstand voltage of 3KV. bottom of the transformer. The insulation material of the body is made of high-quality high-performance high-density cardboard. The high and low voltage leads are made of soft copper, and the oil tank adopts a bell-shaped structure to reduce the factor of oil leakage.

 

 

 

The 2000kva dry-type transformers currently on the market are mainly epoxy resin cast dry-type transformers with a rated capacity of 2000kva.
This transformer is cast with a thin layer of epoxy resin for good insulating properties.

And this transformer also has excellent short-circuit resistance and lightning shock resistance.

The shell of the 2000kva dry-type transformer is made of stainless steel, which is safe and reliable, and the protection level reaches IP20. It has excellent mechanical strength and will not deform under the action of short-circuit electric power. Low loss, low temperature rise and high efficiency.

2000kvA dry-type transformers are generally used indoors at an altitude of 1000 meters or less, and can work normally at a high temperature of 40 degrees Celsius.

Due to the safety and reliability of the 2000kvA dry-type transformer, it is directly installed in the docks, power plants, residential areas and other places with large power consumption.

 

 

Parameter	Value / Range	Notes
Rated Power	2000 kVA	Continuous capacity at 35°C ambient
Primary Voltage (HV)	6 kV / 10 kV / 11 kV / 33 kV (customizable)	Depending on grid standard
Secondary Voltage (LV)	0.4 kV / 0.415 kV / 0.69 kV	Common distribution levels
Frequency	50 Hz or 60 Hz	Compatible with global markets
Winding Material	Copper / Aluminum (OFC)	Copper for higher efficiency
Connection Vector Group	Dyn11, Yyn0, Dyn5, etc.	IEC 60076 compliant
Impedance Voltage (Uk)	5% ~ 6.5%	Typical for short-circuit protection
No-Load Loss (W)	~1800 - 2300 W	Depends on core grade (amorphous or CRGO)
Load Loss (W) @ 75°C	~17000 - 19000 W	Copper windings reduce losses
Cooling Method	ONAN / ONAF / KNAN	Oil natural air natural / forced air
Insulation Class	A / B / F	Oil-immersed: Class A (105°C rise)
Standard Compliance	IEC 60076, IEEE C57.12, CSA, AS/NZS	Global certification available

 

 

A 2000KVA transformer can carry a load of 1700 kW if it is all electrothermal (resistive) loads.

 

But if all of them are inductive loads such as motors, they will be discounted by 60%, which is a motor load of 1200 kilowatts.
If there are both, then 30% off (1400KW) or 20% off (1600KW), it depends on which load accounts for more proportion.

 

In fact, according to the regulations of the Electric Power Bureau, the maximum load is 85% of the full load, which is 1700KVA. Maximum line current is 2586 amps.

Calculate like this: 1700KVA÷380V÷1.732=2.5859446KA=2585.9949A≈2586A≈2600A.

 

 

The transformer did not shut down this statement, it should be withdrawn from operation. It can be realized by switching off operation.

 

The basic principle is to cut off the circuit breakers and isolating switches on the high and low voltage sides of the 2000kva transformer.

 

To turn off the transformer, it is necessary to power off the upstream of the 2000kva transformer. The upstream high-voltage power supply of the 2000kva transformer has a circuit breaker and a drop insurance.

 

Stop the low-voltage side load first, and disconnect the low-voltage side circuit breaker. Then stop the high-voltage side power supply of the 2000kva transformer, and pull the high-voltage side circuit breaker to the test or maintenance position.

 

 

The input voltage of a 2000 kVA transformer is 380 volts, but the voltage into the transformer needs to be determined according to the voltage of the power supply system, generally 10 kV, 30 kV, etc.

 

 

If your factory equipment does not work all day, the critical load is very close to the capacity of the transformer, and the load is relatively stable. Then you can choose a 2000Kva transformer.

 

But if the equipment in your factory needs to be switched on and off every day, the load changes are relatively large, and there are people on duty, then you can consider using two units to run in parallel.

 

 

Decoding Transformer Nameplates

Transformer nameplates provide essential information needed for the safe and efficient operation of the transformer. Understanding the data on these nameplates is crucial for electrical professionals.

 

Key Information on Nameplates:

• Manufacturer's Name
• Model Number
• Serial Number
• Rated Power in kVA (2000 kVA)
• Primary and Secondary Voltage Ratings
• Frequency (usually 50 or 60 Hz)
• Phase (Single-Phase or Three-Phase)
• Impedance Percentage
• Temperature Rise Rating
• Cooling Method (e.g., ONAN – Oil Natural Air Natural)
• Insulation Class
• Year of Manufacture

 

Interpreting Key Specifications

Nameplate Item	Significance
Rated Power (kVA)	Transformer's capacity; here, it's 2000 kVA
Voltage Ratings	Primary and secondary voltages for which the transformer is designed
Frequency	Operating frequency, indicating compatibility with the power source
Phase	Single or three-phase, dictating the type of electrical system
Impedance (%)	Affects voltage regulation and fault current levels
Temperature Rise	Maximum temperature rise above ambient at full load
Cooling Method	Method of cooling, crucial for installation environment
Insulation Class	Determines the operating temperature range

 

Nameplate Significance

1. Ensuring Proper Installation: Nameplate data helps in selecting the right location and setup for the transformer, considering factors like voltage requirements, cooling needs, and space constraints.
2. Operation: Operators can use nameplate information to integrate the transformer into the electrical system correctly, ensuring it operates within the specified limits.
3. Maintenance: Maintenance personnel rely on nameplate data to conduct appropriate servicing, repairs, and replacements. For example, understanding the cooling method is crucial for maintaining the transformer's temperature within safe limits.
4. Safety Compliance: The nameplate information ensures that the transformer is used in accordance with safety standards and regulations.

 

In summary, a transformer's nameplate is a critical reference that contains all necessary data for safe and efficient operation, maintenance, and compliance with electrical standards.

 

 

Because the rated capacity of the transformer multiplied by the coefficient = rated current.

 

Therefore, the primary side current of 10KV/0.4KV, 2000KVA power transformer: I1=2000/(1.732*10)=115.47A,

 

Secondary side current: I2=2000/(1.732*0.4)=2886.83A.

 

A 2000 kVA transformer supplies a low-voltage power distribution cabinet. What size universal switch do I use in the low-voltage power distribution cabinet?

 

If 10KV/0.4KV

 

Transformer primary side current: 116A Secondary side current: 2880A

 

The main input circuit breaker selects 3000A-3500A

 

Can be equipped with three 1000A outlet cabinets.

 

The main busbar can use 80*8 copper busbar, but it is recommended to use 100*10 copper busbar.

 

 

Do you need to make sure that your 2000kva transformer is an oil immersed transformer? Or a dry-type transformer? 

 

The requirements for the environment are different between them.

 

Under normal circumstances, the 2000kva transformer can be below 1000 meters above sea level. If you have special requirements, such as high altitude, frequent lightning activities, wet tropics, dry tropics or areas with severe salt spray, etc. You can negotiate with the manufacturer, generally can meet the requirements.

 

 

The no-load loss of a 2000kVA dry-type transformer is 3050W, and the load loss is 14450W. If it runs at full load, the loss per day is multiplied by 24 hours.

Load loss 14450*24H=346800W

No-load loss is 3050W*24H=73200W

 

 

The installation requirements of most countries are that the safe installation distance of two 2000kva dry-type transformers is more than 1 meter. The author recommends that you choose a safe distance of more than 1.5 meters.

 

 

High pressure to low pressure and ground is greater than 1000 megohms, high pressure to ground, low pressure to ground is also greater than 1000 megohms is qualified.

 

You can use a 2500 volt megohmmeter to measure.

 

Since the transformer is a large-capacitance device, the measurement will take a period of time. When the speed reaches 120/MIN or more, the normal operation is more than 30S.

 

Note: After the measurement, keep its speed until it is separated. Otherwise, it is easy to damage the instrument due to the discharge of the device under test..

 

If the measurement can meet the above parameters.

 

Prove the equipment is in good condition!

 

 

Yes, unless the power factor COSΦ is less than 0.5, there will be problems! Is the transformer loss will be larger! As long as the power of the equipment below is not greater than the maximum active power that the transformer can output, there is no problem!

 

According to the conventional power factor of 0.95, a 2000KVA transformer will output 1900KW of active power at full load.

 

However, the economic operating capacity of the general transformer is about 80% to 85%, so that the loss of the transformer will not be too high, and the service life will be longer!

 

So as long as the reactive power compensation is in place and the power factor is not lower than 0.85, it can be used!

 

 

Selecting the right 2000 kVA transformer is a critical investment that impacts your operational efficiency, energy costs, and uptime. As a leading manufacturer, GNEE combines technical excellence, international certifications, and customer-centric service to deliver transformers that outperform expectations.

 

Whether you are expanding a factory, upgrading a data center, or building a renewable plant, our team is ready to support you from specification to commissioning.

 

🔌 Don't settle for generic solutions. Get a customized quote for your 2000 kVA transformer now!

 

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