Emotron VSB Instruction Manual Chapter 1 Safety Precautions
period of time. The motor in regular service should also be subjected to regular insulation
inspection so as to avoid the drive damage as a result of motor insulation damage.
1.2.6 Derating
Due to the thin air in high-altitude areas, the radiating performance of the drive with forced air
cooling may degrade while the electrolyte of electrolytic capacitors is more volatile, which can
result in reduction in product life. Drive should be derated when used in an area at the altitude
above 1000 meters. It is recommended to derate 1% for every 100m when the altitude is above
1000 meters.
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