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Protective Devices
Protective devices, such as relays, fuses and circuit breakers are required to protect the wind farm and the network from electrical faults. Careful coordination may be needed to ensure that all conceivable faults are dealt with safely, and that correctly functioning equipment is not disconnected unnecessarily.
Short-circuit (or fault) current is a related issue. In the event of an electrical fault on the network close to the wind farm, some short circuit current will flow from the wind turbines into the fault. Requirements may exist on the maximum or minimum permitted levels.
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