The rotor blades are a highly stressed part of the turbine. They require comprehensive protection against outside influences, e.g., lightning currents and surges. This can be achieved with a profound protection concept using DEHN products and constant monitoring.
The protection concept
An integrated protection concept prevents damage to the information and data technology in your wind turbine. In addition, the reliable condition monitoring system keeps you posted about the status of your system - indispensable for operational safety and maximum system availability.
A - DEHNsolid
Coordinated type 1 SPD to protect the rotor blade heating, with 200 kA discharge capacity
B - DEHNguard M TN CI
Type 2 SPD with integrated backup fuse to protect the pitch system and aircraft warning light
C - DEHNguard SE H 1000 VA FM
Type 2 SPD to protect the generator (half the size of the previous version with Neptune circuit)
E - BLITZDUCTOR XT
Type 1 SPD for protecting signal, bus or control lines and Ethernet. With LifeCheck® arrester monitoring
E - DEHNconnect SD 2
Type 1 SPD for protecting signal, bus or control lines and Ethernet. With disconnection functon, only 6 mm wide
Upward flashes present a risk to wind turbines
As damage resulting from a lightning strike does not automatically lead to the immediate failure of the wind turbine, it is frequently overlooked.
Upward flashes are particulary dangerous in this context. Their initial long stroke current of just a few 100 A is the major source of damage, e.g., melting on the receptors of the rotor blades.
In the long term, this damage can lead to in system failure.
Due to the low flow of current, standard measuring systems often fail to fully detect upward flashes. DEHNdetect, on the other hand, registers both types of current: impulse current and the dangerous long stroke current.
Your benefit: You prevent expensive maintenance work and long downtimes.