Introduction
VKE 11kV distribution transformer has gained international recognition for its efficient heat dissipation, outstanding insulating properties and superior weather resistance. This series has been successfully deployed in challenging African markets. There, our transformers have reliably endured severe climatic conditions and consistently provide strong support for the upgrading of local power infrastructure.
Specifications
-Input Voltage: 11kV
-Output Voltage: 0.4kV
-Capacity Range: 30~2,500kVA
-Frequency: 50Hz
-Installation: Outdoor/Indoor
-Altitude: ≤ 1,000m
-Ambient Air Temperature: -25°C ~+40°C (Average: +20°C)
Our operator is inspecting every detail of the core to ensure flawless performance.
Features
-Low-voltage windings with a capacity ranging from 630 to 2,000kVA is built with a cylindrical or helical structure for enhanced mechanical strength.
-A positioning structure is added to prevent displacement during transportation. All fasteners are equipped with lock nuts to avoid loosening over long-term operation.
-The surface undergoes degreasing, derusting and phosphating treatment before being coated with primer and topcoat. This makes it suitable for harsh environments.
-Protective devices such as gas relay, pressure relief valve, oil level gauge, etc. are incorporated for safe and reliable operation.
Our technician is assembling the key components of the 11kV distribution transformer.
Custom Options
Electrical Parameter
- Voltage Level: input voltage, output voltage, tapping range
-Capacity: overload capacity, special capacity
-Frequency: 50Hz, 60Hz
Structure
-Winding Configuration: copper or aluminum conductors, insulating materials, vector group
-Cooling System: oil natural air natural (ONAN), oil natural air forced (ONAF), special cooling design (for tropical zones)
Mechanical & Environmental Resilience
-Protection Grade: IP54, IP65, corrosion-resistant treatment (for coastal areas)
-Special Climate Condition: highland (altitudes>1,000m), extreme temperature (-40℃~+50℃), earthquake-resistant design (for seismic zones)
Accessory
-Bushings: porcelain or composite bushings
-On-Load Tap Changer (OLTC)
-Color & Logo
Our quality inspector is conducting precision testing on the 11kV distribution transformer.
Technical Q&A on 11kV Distribution Transformer
Q: What are the key points to pay attention to during installation?
A: • Stable foundation, horizontal installation, no tilting
• Adequate heat dissipation space (e.g., ≥ 1.5m from walls)
•Ground resistance ≤ 4Ω
• Checks: oil level, sealing and cleanliness of the enclosure
Q: What causes abnormal temperature rise?
A: • Prolonged overloading
• Cooling system failure (fan or oil pump shutdown)
• Oil circuit blockage or insufficient oil volume
• Internal short circuit or poor contact
Q: How to handle oil leakage?
A: • Minor Leaks: Tighten bolts or replace gaskets
• Severe Leaks: Shut down the equipment, drain the oil, and repair or replace components
