{"id":5905,"date":"2026-09-04T02:03:20","date_gmt":"2026-09-04T02:03:20","guid":{"rendered":"https:\/\/honcon-electric.com\/?p=5905"},"modified":"2026-09-04T02:03:22","modified_gmt":"2026-09-04T02:03:22","slug":"switchgear-cost-for-wind-power-project","status":"publish","type":"post","link":"https:\/\/honcon-electric.com\/ru\/switchgear-cost-for-wind-power-project\/","title":{"rendered":"Switchgear Cost for Wind Power Project: A 150 MW Case in Xinjiang"},"content":{"rendered":"
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When planning a wind power project, switchgear is one of the key electrical equipment costs to consider. However, the switchgear cost for wind power project<\/strong> cannot be determined simply by the number of cabinets.<\/p>

The voltage level, rated current, short-circuit capacity, circuit breaker configuration, protection system, busbar design, and project-specific requirements all affect the final cost.<\/p>

A 150 MW wind power project in Turpan, Xinjiang provides a practical example. For this project, the electrical system uses 40.5 kV metal-clad switchgear<\/strong><\/a>, providing medium voltage power distribution and protection for the wind power system.<\/p>

A 150 MW Wind Power Project in Turpan, Xinjiang<\/h2>

Turpan is located in eastern Xinjiang, an area known for its strong renewable energy resources and large-scale wind and solar development.<\/p>

For this 150 MW wind power project, the electrical distribution system required medium voltage switchgear suitable for the project’s power collection and distribution requirements.<\/p>

The project selected metal-clad switchgear with a 40.5 kV rated voltage<\/strong>.<\/p>

For a project of this scale, switchgear is not simply a standard cabinet purchased from a catalogue. The equipment needs to be configured according to the project’s electrical design, including the incoming and outgoing circuits, circuit breaker ratings, protection requirements, metering, busbar arrangement, and other interfaces.<\/p>

This is why the actual switchgear cost for wind power project<\/strong> needs to be evaluated from the complete technical configuration.<\/p>

Why 40.5 kV Metal-Clad Switchgear?<\/h2>

In China, 35 kV power systems commonly use switchgear with a 40.5 kV rated voltage<\/strong>.<\/p>

This distinction is important when discussing the equipment with international customers.<\/p>

The 40.5 kV value refers to the rated voltage of the switchgear, while the actual operating voltage of the electrical system is determined by the project design.<\/p>

For international projects, this voltage class is also relevant when customers refer to 33 kV, 34.5 kV, or 35 kV medium voltage systems. The exact equipment selection should always be confirmed against the project’s system voltage, insulation coordination, short-circuit requirements, and applicable standards.<\/p>

IEC 62271-200<\/a> covers AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV, making this standard relevant to this class of medium voltage equipment.<\/p>

For the Turpan project, the 40.5 kV metal-clad configuration provided a suitable solution for medium voltage power distribution and protection.<\/p>

What Determines Switchgear Cost for a Wind Power Project?<\/h2>

The cost of switchgear can vary significantly between wind power projects, even when their installed capacities are similar.<\/p>

1. Rated Voltage<\/h3>

The voltage rating determines the insulation level and the basic electrical design of the switchgear.<\/p>

For a 40.5 kV switchgear system, the equipment requires appropriate insulation distances, insulation coordination, busbar design, circuit breakers, and internal components.<\/p>

Therefore, a 40.5 kV metal-clad switchgear lineup should not be compared directly with a 12 kV or 24 kV switchgear lineup based only on cabinet quantity.<\/p>

2. Rated Current<\/h3>

Different panels within the same wind power project may have different current requirements.<\/p>

Incoming panels, outgoing feeder panels, bus couplers, transformer feeders, and other functional units can require different rated currents.<\/p>

A higher current rating can affect the circuit breaker, busbar, CTs, cable connections, and other components.<\/p>

3. Short-Circuit Capacity<\/h3>

Short-circuit performance is another important factor in determining the switchgear cost for wind power project<\/strong>.<\/p>

The required short-time withstand current and short-circuit breaking capacity should be selected according to the project’s electrical calculation.<\/p>

A higher short-circuit rating normally requires components and structures capable of withstanding greater thermal and mechanical stresses.<\/p>

4. Circuit Breaker and Protection Configuration<\/h3>

The vacuum circuit breaker is one of the major components of a metal-clad switchgear panel.<\/p>

The final configuration may also include:<\/p>