Three Phase Power Transformer With OLTC

1.Location selection: The installation location of the three - phase power transformer with OLTC should be flat, well - ventilated, and away from flammable, explosive, and corrosive substances. It should also be convenient for power cable access and equipment maintenance. For outdoor installations, choose a location with good drainage to prevent waterlogging.

2. Foundation construction: The oil immersed self cooled transformer foundation should be stable and firm, capable of bearing the weight of the oil immersed type transformer and related equipment. The surface of the foundation should be level, with an allowable levelness deviation within the specified range. Usually, the central axis of the three phase oil immersed transformer should be aligned with the center of the foundation to ensure accurate installation.

3. Oil immersed power transformer handling and installation: When handling the oil cooled power transformer, use appropriate lifting equipment and tools to ensure the safety of the equipment and personnel. During the installation process, pay attention to the direction and angle of the oil filled power transformer to ensure that it is installed in accordance with the design requirements. The connection between the hermetically sealed power transformer and the foundation should be firm, and shock - absorbing measures should be taken if necessary.

4. Connection of primary and secondary circuits: The connection of the primary and secondary circuits of the oil cooled small power transformer should be reliable, and the wiring should be neat and tidy. The cross - section of the wire should meet the current - carrying capacity requirements to avoid overheating caused by excessive current. The connection points should be tightly connected to prevent poor contact from generating sparks and heat.

5. Grounding system: The fully sealed oil immersed power transformer should be reliably grounded. The grounding wire should have sufficient cross - section and good conductivity to ensure that the fault current can be quickly discharged into the ground. The grounding resistance should meet the design requirements, usually not exceeding the specified value.

6. Cooling system: For oil - cooled liquid dielectric power transformers, check the oil level and oil quality before installation to ensure that the cooling system is working properly. The oil - filled liquid filled distribution transformer should have no oil leakage, and the radiator fins should be unobstructed to ensure good heat dissipation. For dry - type output power transformers, ensure that the cooling air ducts are unobstructed and the cooling fans are working properly.

7. Protective device installation: Install necessary protective devices such as fuses, circuit breakers, and relays according to the design requirements to protect the three winding oil ummersed power transformer from over - current, short - circuit, and other faults. These protective devices should be properly adjusted and tested to ensure their reliable operation.

8. Insulation test: Before and after the installation of the step down power transformer, conduct insulation tests on the windings and other components to check the insulation performance of the transformer for power. The insulation resistance should meet the relevant standards. If the insulation performance does not meet the requirements, find out the cause and deal with it in a timely manner.

9. Testing and commissioning: After the installation is completed, conduct comprehensive tests on the power supply transformer, including no - load testing, load testing, and voltage regulation testing, etc., to check whether the performance of the step up power transformer meets the design requirements. Only after passing the testing and commissioning can the electrical power transformer be put into formal operation.

Established in 2008, GNEE boasts ‌18 years of expertise‌ in transformer manufacturing and export, having delivered ‌over 50,000 units‌ globally. With a team of ‌200+ professionals‌ and ‌20,000 sqm facilities‌ across Shijiazhuang, Xingtai, and Anyang, we leverage strategic locations for ‌raw material access‌ and ‌supply chain efficiency‌. Our commitment to innovation and quality ensures high-quality distribution and power transformer for diverse industries worldwide.