3 MVA 3000 KVA 11kV Oil Cooled Distribution Transformer

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3 MVA Transformer Specifications

The 3 MVA 11KV oil cooled distribution transformer is designed to handle large amounts of electrical power, up to 3000 kVA, and it operates at a voltage of 11,000 volts (11KV). The transformer is cooled with oil to prevent overheating of the winding and core, which can lead to breakdowns and failures. The oil also serves as an insulator to prevent arcing between the windings.

Transformer Rating: 3MVA

Primary Voltage: 11kV

Secondary Voltage: 415V

Current Rating: HV 157A / LV 4173A

Frequency: 50Hz

Temperature Rise: 55°C

Winding Connection: Dyn11

Tap Changer: Off Circuit Tap Changer (OCTC)

Insulation Level: 12/28/75kV

Impedance: 6%

Efficiency: 98.15%

Cooling: ONAN (Oil Natural Air Natural)

Type of Cooling: Oil-Cooled

No. of Phases: Three-Phase

No. of Windings: Two

Type of Transformer: Distribution Transformer

Type of Enclosure: Outdoor (Weather-Proof)

Standard: IEC 60076

Oil Capacity: 1750L

Weight: 6772 kg

Dimensions (L x W x H): 4100 mm x 2300 mm x 3150 mm

Color: As per customer requirement

How much does 3 mva transformer cost ?

3 MVA 11kV oil cooled distribution transformer price: USD2,*618.00/SET

3 MVA 11kV Oil Cooled Distribution Transformer Tank and Cover

3 MVA 11kV Oil Cooled Distribution Transformer Test Item:

The 3 MVA 3000 kVA 11kV oil cooled distribution transformer is a critical component in power distribution systems, and it is essential to ensure that it meets established performance standards. Several test items are carried out to evaluate the transformer's functionality and efficiency.

1. Insulation Resistance Test: This test determines the resistance of the transformer's insulation system. It involves applying a voltage to the transformer's various windings and measuring the current flow through it to determine its resistance value.

2. Impedance Test: The Impedance test measures the impedance of the transformer. The procedure involves injecting a known voltage from one end of the transformer and measuring the voltage on the other end. The impedance values obtained are used to calculate the transformer's short-circuit current.

3. Load Loss and No-Load Loss Test: The Load Loss test assesses the transformer's losses when a specific amount of load is applied. The No-Load Loss test determines the transformer's losses when it is not under any load. Both tests involve measuring the input and output power of the transformer.

4. Transformer Ratio Test: The Transformer Ratio test checks the ratio between the primary and secondary winding of the transformer. This test ensures that the transformer can provide the correct voltage output.

5. Insulation Power Factor Test (Tan Delta Test): This test determines the power factor of the transformer's insulation. It measures the level of imperfection of the insulation, which can lead to partial discharge and system failure.

6. Oil Breakdown Voltage Test: The Oil Breakdown Voltage test checks the dielectric strength of the transformer's oil. It measures the voltage required to create a spark in the oil, which indicates the oil's quality and resistance to electrical breakdown.

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