Refurbished ABB SZ11-40000/110 Power Transformer | 40MVA 110kV to 10.5kV | Global Top-Tier Reliability | On-Load Tap Changing (2014)

World-Class Pedigree: This 40MVA (40,000 kVA) unit is manufactured by ABB, the global leader in power technologies. Known for exceptional thermal performance and short-circuit withstand capability, this SZ11 series transformer features advanced On-load Tap Changing (OLTC) for precise grid control. Meticulously refurbished and tested to ABB’s original rigorous standards, it provides a “zero-risk” power solution for critical infrastructure at an unbeatable value.

Additional information

Manufacturer

Zhongshan ABB Transformer Co., Ltd. (Global Premium Brand)

Model

SZ11-40000/110

Rated Capacity

40,000 kVA (40 MVA)

Voltage Ratio

110,000V ± 8 × 1.25% / 10,500V

Frequency / Phase

50Hz / 3-Phase

Manufacturing Date

June 2014

Scope of Supply

  • Main Unit: ABB 40MVA Main Transformer Body.
  • Voltage Control: ABB Original On-load Tap Changer (OLTC).
  • Cooling System: Full set of high-durability detachable radiators.
  • Safety & Monitoring: Original ABB-standard Buchholz relay, oil temperature indicator, and pressure relief valve.
  • Control Box: Integrated intelligent terminal box for auxiliary wiring and protection.
  • Documentation: Full refurbishment report, dielectric oil test results, and original ABB technical nameplate.

Dismantling, Maintenance & Refurbishment

Restored to Peak Efficiency:
• Internal De-sludging: Comprehensive internal cleaning and inspection of the core and windings using professional industrial solvents.
• Advanced Vacuum Drying: Industry-leading vacuum drying process to eliminate moisture from the insulation paper, ensuring a low dissipation factor.
• Gasket Overhaul: Complete replacement of all seals with premium fluorine rubber to guarantee a leak-free lifespan.
• Bushing Inspection: Detailed ultrasonic testing and cleaning of all high-voltage porcelain bushings.
• Full Dielectric Testing: Rigorous testing of turns ratio, insulation resistance, no-load loss, and load loss to match original ABB factory curves.

Services Provided

Target Regions: Optimized for high-stability power requirements in Uzbekistan, Kazakhstan, Nigeria, and Southeast Asia. • Logistics Excellence: Professional dismantling and sea-worthy/rail-worthy heavy-duty packaging. Main body nitrogen-filling for long-distance transit to prevent core oxidation. • Expert Consultation: Remote installation supervision by senior engineers experienced with ABB equipment. • Warranty: 1-year operational warranty and lifetime access to technical consulting.
Why invest in a refurbished ABB transformer rather than a new local brand?
ABB transformers are engineered with significantly higher safety margins and better material quality. A 10-year-old ABB unit, once professionally refurbished, often outlasts a brand-new “budget” transformer and offers far superior protection against grid surges.
This unit is native 10.5kV. For 11kV grids, it operates perfectly due to its wide OLTC range. For 6.6kV requirements, we can provide additional consultation on matching or modifications.
We specialize in multimodal transport. For Central Asian countries like Uzbekistan, we coordinate heavy-lift rail platforms and manage all border clearance documentation to ensure a seamless “Door-to-Substation” delivery.
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