These days, electrical machines are sometimes pushed by energy digital converters. Though the usage of converters brings with it a wide range of benefits, frequent mode (CM) indicators are a frequent downside in lots of installations. Frequent mode voltages induced by the converter drive frequent mode currents harm the motor bearings over time and considerably scale back the lifetime of the drive. Therefore, it’s important to measure these frequent mode portions so as to take appropriate countermeasures. Handheld oscilloscopes together with Rogowski probes supply a easy and dependable method to precisely decide the required portions and the effectiveness of various countermeasures.
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