Assembling Process of Transformer - MEP Tools

Assembling Process of Transformer - MEP Tools

⛔ Assembling Process of Transformer ‼️

🔸 The transformer assembly process involves multiple stages to ensure proper installation, reliability, and safety. Below is a step-by-step guide to the transformer assembly process:

⭕ Preparation Phase:

➡️ Inspection of Components:

✅ Check core, windings, bushings, tank, conservator, cooling systems, and accessories for defects.

➡️ Site Preparation:

✅ Ensure the area is clean, level, and has a proper foundation.

➡️ Tools and Equipment:

✅ Ready essential tools like wrenches, torque tools, and lifting devices.

⭕ Core and Coil Assembly:

➡️ Core Placement:

✅ Position the core as per design; ensure it is clean and dry.

➡️ Winding Installation:

✅ Install windings carefully, maintaining insulation and alignment.

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➡️ Fastening:

✅ Secure core and windings with clamps to prevent movement.

⭕ Tank Assembly:

➡️ Tank Placement:

✅ Position the transformer tank properly. Inspect the tank for cleanliness and dryness.

➡️ Lowering Core-Coil Assembly:

✅ Carefully lower the core and coil assembly into the transformer tank using lifting equipment.

➡️ Sealing:

✅ Apply gaskets to prevent oil leakage, and seal the tank lid securely.

⭕ Bushings Installation:

➡️ Mount Bushings:

✅ Attach high-voltage and low-voltage bushings to the tank.

➡️ Connection:

✅ Connect the bushings to the corresponding internal windings.

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⭕ Cooling System Installation:

➡️ Radiators and Fans:

✅ Attach radiators or cooling fins to the transformer tank. Install fans or pumps for forced cooling systems.

➡️ Oil Circulation:

✅ Ensure proper piping for oil circulation in the cooling system.

⭕ Conservator and Breather Installation:

➡️ Conservator Tank:

✅ Mount the conservator tank above the transformer main tank.

➡️ Breather:

✅ Connect the silica gel breather to the conservator to ensure moisture-free breathing.

⭕ Oil Filling:

➡️ Degassing:

✅ Degas the transformer oil to remove moisture and impurities.

➡️ Filling:

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✅ Fill the tank with transformer oil under vacuum conditions to prevent air pockets.

➡️ Top-Up:

✅ Ensure the oil level matches the recommended level.

⭕ Electrical Connections:

➡️ External Connections:

✅ Connect cables or busbars to high-voltage and low-voltage bushings.

➡️ Grounding:

✅ Ensure proper grounding of the tank and core.

⭕ Testing:

➡️ Insulation:

✅ Conduct insulation resistance tests (e.g., Megger testing).

➡️ Polarity & Ratio:

✅ Verify turns ratio and polarity.

➡️ Leak Check:

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✅ Inspect for oil leaks and tank integrity.

⭕ Finalization:

➡️ Accessories:

✅ Install temperature gauges, oil level indicators, and relays.

➡️ Inspection:

✅ Verify assembly and functionality.

➡️ Commissioning:

✅ Energize the transformer and monitor operation.

⭕ Safety Considerations:

✅ Follow the manufacturer's manual and guidelines.

✅ Use appropriate safety gear and protocols.

✅ Comply with electrical standards and codes.

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