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Wind Power Prefabricated Compact Substation 40.5kV

  • Wind Power Prefabricated Compact Substation 40.5kV

Key attributes

Brand ROCKWILL
Model NO. Wind Power Prefabricated Compact Substation 40.5kV
Rated voltage 40.5kV
Series ZGS

Description

This Rockwill wind power prefabricated compact substation is a box-type transformer designed for wind turbine step-up applications. It integrates a transformer, oil-immersed load switch, and high-voltage fuses within a sealed oil-filled tank, using transformer oil as both electrical insulation and cooling medium. The LV side is configured with necessary protection components.

The substation converts the low-voltage output from wind turbines (0.8 kV / 0.9 kV) to medium voltage for grid connection. It features intelligent monitoring, reliable operation, compact size, light weight, and ease of installation.

Key Features

  • Wind turbine dedicated design:Step-up from LV turbine output to MV grid connection

  • Integrated box-type construction:Transformer, load switch, and HV fuses housed in a single sealed oil-filled tank

  • Intelligent operation: Equipped with monitoring and protection functions for unattended wind farm operation

  • Compact and lightweight: Small footprint and reduced weight simplify installation in wind turbine towers or at tower base

  • Robust weatherproof enclosure :Suitable for outdoor wind farm environments with wide temperature tolerance and corrosion resistance

  • Multiple HV voltage options ;Configurable for standard grid connection voltages worldwide

Technical Parameters

Parameter Value
Rated voltage (HV) Up to 40.5 kV
HV output options 10 / 11 / 13.8 / 20 / 33 / 35 kV
Maximum operating voltage 38.5 kV
LV input (turbine side) 0.8 kV / 0.9 kV
Rated capacity 2500 kVA
Frequency 50 / 60 Hz
HV protection Oil-immersed load switch + HV fuse
Transformer type Oil-immersed, hermetically sealed
Insulation level (40.5 kV) 40.5 / 95 / 200 kV (Um / PF / LI) per IEC 60071-1
Enclosure Weatherproof, corrosion-resistant steel
Pollution class III
Standards IEC 60076IEC 62271-202
Certification ISO 9001

 Service Environment

Parameter Specification
Ambient temperature –25 °C to +40°C
Altitude ≤1,000 m above sea level
Relative humidity Daily ≤95 %, monthly ≤90 %
Max. wind speed (10 m height) 35 m/s
Ground acceleration 2 m/s²
Installation Outdoor
Pollution grade III

 Applications

  • Wind turbine step-up transformers (LV to MV grid connection)

  • Onshore and offshore wind farm collection systems

  • Distributed renewable energy power generation

Custom voltage configurations, capacity ratings, and enclosure designs are available on request. Contact Rockwill for project-specific design and quotation.

Documentation Resource Library Prefabricated Substation

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