The User Manual of 580 Series General Frequency Converter

11) Lightning impulse protection

The lightning overcurrent protection device is set in the frequency converter so that the frequency converter has certain self-lightning proection capability, but the user shall set a lightning protection device in front of the frequency converter at the point with much lightning.

12) Altitude and derating

In a region with altitude more than 1,000m, the frequency converter will have bad heat dissipation effect resulting from thin air. The derating will be required if necessary. Please contact use for technical consultation in respect of this situation.