Refurbished SZ11-12500/110 Oil-Immersed Power Transformer | 12.5MVA 110kV | Huapeng Brand

A premium, well-preserved 12.5MVA power transformer manufactured in 2018 by Jiangsu Huapeng, a top-3 Chinese manufacturer. Featuring On-load Tap Changing (OLTC)technology, this unit provides precise voltage regulation for substations, mining sites, and heavy industrial grids. Rigorously tested and certified refurbished, offering new-machine performance at a fraction of the cost. Ready for immediate export to Central Asia and Africa.

Additional information

Manufacturer	Jiangsu Huapeng Transformer (Top-tier Brand)
Model	SZ11-12500/110 (On-load Tap Changing)
Rated Capacity	12500 kVA (12.5 MVA)
Voltage Ratio	110,000V ± 8 × 1.25% / 10,500V
Frequency / Phase	50Hz / 3-Phase
Manufacturing Date	April 2018

Scope of Supply

Main Unit: Fully refurbished SZ11-12500 transformer body.
Cooling System: Original radiators and high-efficiency cooling fans.
Protection Devices: Buchholz relay, pressure relief valve, and oil level indicator.
Control Cabinet: Intelligent temperature control cabinet for ONAF system.
Accessories: High-voltage (110kV) and low-voltage (10.5kV) porcelain bushings.
Documentation: Original nameplate, testing reports, and maintenance logs.

Dismantling, Maintenance & Refurbishment

Core & Coil Inspection: Internal visual inspection to ensure zero carbonization or deformation.
Oil Treatment: Vacuum dehydration and degasification; oil dielectric strength tested to >50kV.
Gasket Replacement: All sealing parts replaced with high-quality Fluorine rubber to prevent leakage.
Electrical Testing: Ratio test, insulation resistance (Megger), winding resistance, and no-load/load loss tests.
Surface Protection: Professional sandblasting and 3-layer anti-corrosion painting in classic transformer gray.

Services Provided

Global Logistics: Expert heavy-duty export packaging and sea/rail freight coordination to Uzbekistan, Kazakhstan, and Africa.
On-site Supervision: Remote or on-site guidance for installation and commissioning.
Warranty: 12-month operational warranty on all refurbished components.
Customization: Voltage ratio adjustment (if required) to match local grid standards.

Why choose a 2018 Huapeng transformer instead of a new

This 2018 unit offers over 95% of the lifespan of a new machine but at 40-50% of the cost. Additionally, new 110kV units often have a 6-8 month lead time, while this unit is ready to ship.

Is the 110kV voltage compatible with 115kV or 105kV grids?

Yes. With its On-load Tap Changer (OLTC), the high-voltage side can be adjusted from 103.5kV up to 126.5kV, making it highly versatile for various national grid standards.

How do you ensure the 36-ton unit isn't damaged during transport?

We use specialized nitrogen-filling or oil-filled transport methods (depending on distance) and secure the unit with heavy-duty steel bracing to ensure zero movement during rail or sea transit.

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Chanba Road, Chanba Ecological District, Xi'an, Shaanxi, China

+8613379001223

Juxind@used-equipments.com

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