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Custom 500kVA to 5000kVA GSU Generator Step-Up Power Transformer 400V 480V to 10.5kV 13.8kV ONAN Copper Winding Transformer

Product Summary

Key Highlights High Short-Circuit & Impact Strength: 100% pure copper windings with robust clamping structure to withstand sudden load steps and generator grid-tie surges. Optimized ONAN Cooling: Advanced internal oil ducts ensure low temperature rise and superior thermal overload margin during ...

Key Attributes
Brand Name: TNNPI
Place of Origin: Henan, China
Certification: CE,UL,ISO
MOQ: 1 piece
Price: 650-18,000 / piece
Supply Ability: 5000pcs/year
Delivery Time: 7-14 work days
Payment Terms: L/C,D/A,D/P,T/T,Western Union
Standard Packaging: Export standard packaging
Product Custom Attributes
Capacity/KVA:
100 KVA – 10,000 KVA (10 MVA)
Low Voltage (Input):
0.4 KV, 0.48 KV, 0.69 KV, 0.8 KV, 1.14 KV
High Voltage (Output):
6.3 KV, 10 KV, 11 KV, 13.8 KV, 22 KV, 33 KV, 35 KV
Rated Frequency:
50Hz/60Hz
Application:
Utility Grid And EPC Projects
Type Of Cooling:
ONAN (Natural Oil Air) / ONAF (Forced Air)
Standards:
IEC 60076 / IEC 62271 / IEC 61439
Customization:
Voltage, Capacity, Current, IP Rating, Color, OEM Logo
Vector Group:
Dyn11 / YNd11 / YNyn0
Winding Material:
High-Conductivity Electrolytic Copper / High-Grade Aluminum
Insulation Class:
Class A (Mineral Oil) / Class F/H (Ester Fluid/High Temp)
Product Description

Key Highlights

  • High Short-Circuit & Impact Strength: 100% pure copper windings with robust clamping structure to withstand sudden load steps and generator grid-tie surges.
  • Optimized ONAN Cooling: Advanced internal oil ducts ensure low temperature rise and superior thermal overload margin during continuous peak-load operation.
  • Low Partial Discharge & Long Life: Vacuum drying and oil-filling processes ensure high dielectric integrity and reliability for critical standby power systems.

Target Applications

  • Diesel & gas generator power step-up
  • Medium-voltage backup power for data centers, hospitals, and mining
  • Containerized & skid-mounted mobile power stations

Custom Engineering & Capabilities

  • Capacity & Voltages: 500kVA to 5000kVA; LV: 400V/480V/600V to MV: 6.3kV/10.5kV/11kV/13.8kV.
  • Connections & Taps: Dyn11, YNd11, or custom vector groups with ±2×2.5% off-circuit tap changer (NLTC).
  • Terminations: Flanged air-filled cable boxes, busduct throat connections, or open-terminal bushings.

Standards & Quality Assurance

  • Designed and tested to IEC 60076 and utility interconnection standards.
  • Traceable raw materials with comprehensive factory test certificates.
  • Anti-vibration structural design suitable for packaged genset enclosures.

Get a Custom Quote & Design

Need a matched step-up transformer for your genset?
Share your generator specs, target grid voltage, and space/enclosure constraints.
 [Consult Our Engineers & Get Dimensions / Quote]

Overall Rating
5.0
Based on 50 reviews recently
Rating Snapshot
5
100%
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All Reviews
P
pua kenneth from Philippines
Mar 31.2025
The service was very warm and professional. The quality of the product is very good. I will contact my client and inform them. Then I will make another purchase.
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A
Arif Electronics from Bangladesh
Jan 8.2025
Every thing was ok, good service good profucts and good price
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A
Albert from Namibia
Jun 11.2024
5 star
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