132kV 60 MVA Transformer

The 132 kV 60 MVA transformer is an outdoor, oil-immersed, three-phase unit with an on-load tap-changer, adhering to IEC standards. Insulation A class.  Designed for continuous operation in a 50 Hz high-voltage transmission system, it features a temperature rise of 50°C, which is 10°C lower than the limits specified by IEC 60076-2 and IEC 60076-7.

Service and Environmental Conditions:

• Max Ambient Temperature: 49°C
• Min Ambient Temperature: -1°C
• Direct Sunlight Temperature: 82°C
• Design Ambient Temperature: 50°C
• Max Relative Humidity: 96% at 49°C
• Altitude: 7.25 meters above sea level
• Environment: Corrosive and humid, tropical
• Degree of Protection (IP): IP55

Additional Accessories:

• Winding Temp Indicator with 2 Contacts
• Liquid Level Indicator with 2 Contacts
• Moving and Jacking Facilities
• Liquid Temperature Indicator with Alarm Contacts
• Pressure Safety Relief Valve with Alarm & Trip Contacts (2 sets)
• Upper Filter Plug or Cap (for units above 2500 kVA)
• DGPT2 Integrated Device
• Lifting Eyes for Cover
• Globe Type Combination Drain and Lower Filter Valve
• Pressure-Vacuum Gauge (Sealed-Tank Construction)
• Sampling Device
• Pressure-Vacuum Bleeder Device (Sealed-Tank Construction)
• Marshalling Panel/Cabinet
• Tap Changer
• Facilities for Lifting Core and Coil Assembly
• Lugs for Lifting the Complete Transformer
• Rating Plate with Winding Diagram
• Stainless Steel Nameplates
• Earthing Lugs (2 sets)
• Breather/Drain for Terminal and Marshalling Boxes
• Ground Pads
• Fault Pressure Relay with Contacts
• Space Heater for Marshalling Kiosk & Terminal Box
• Valve for Radiator (Top & Bottom)
• Padlocking Device for Tap Changer & Terminal Box

Design and Construction:

• Meets the latest development standards in design, construction, and materials.
• Capable of withstanding short-circuit currents and all tapping positions per IEC 60076-5.
• Average surface noise level complies with NEMA TR1.
• Designed to suppress harmonic currents, minimize interference, and prevent leakage flux overheating.

Mechanical Protection:

• All external wiring, control panels, and accessories are shielded for rain protection.
• Accessories, wiring, and components are robust for harsh Qatar weather.
• Control cables are routed through metal conduits for protection.

Magnetic Circuit:

• Core made from high-grade, non-aging, low-loss steel sheets.
• Sheets are insulated with durable, heat-resistant varnish.
• Core is clamped and braced to withstand short-circuit stresses and vibrations.

Windings:

• Made of high-conductivity electrolytic copper with thermally upgraded paper insulation.
• Assembled core and windings are dried in a vacuum to ensure moisture removal.

Tank:

• Welded construction with bolted cover, high tensile strength steel plate.
• Equipped with bolted manholes and hand-holes for maintenance and inspection.

Cooling and Conservator:

• ONAN cooling plant.
• Conservator made of welded steel, designed to withstand a full vacuum and facilitate oil expansion and contraction.

Transformer Oil:

• Highly refined mineral naphthenic oil, free from corrosive sulfur, PCB, DBDS, antioxidants, passivators, and metal deactivators.

Inspection and Testing:

• All tests performed in accordance with IEC 60076, IEC 60060, IEC 60270, and other relevant IEC standards.

60 MVA Transformer Transportation