The power components of frequency converters are designed for specific motor cable lengths. If the specified cable length is exceeded, malfunctions can occur and the converter could trip. The capacitance of the cable used is partly responsible for…
The energy saving potential when a frequency converter is used depends on the type of load being driven and the optimisation of the efficiency of the pump or the drive by the frequency converter, as well as how much time the system operates…
Earthing measures are generally imperative in order to fulfil the statutory requirements of the EMC and Low Voltage directives. They are a prerequisite for the effective use of other measures, such as shielding and filters. Other measures are of no benefit without good earthing.…
If you are thinking about connecting an electric motor to a variable frequency drive, there are three aspects that must be taken into consideration. These aspects are insulation stress, bearing stress and thermal stress.
Compliance with ambient temperature specifications External climatic conditions and ambient conditions have a distinct effect on the cooling of all electrical and electronic components in a control room or cabinet. Minimum and maximum ambient temperature limits are specified for all frequency converters. These limits are usually…
Various types of AC mains systems are used to supply power to electrical drives. They all affect the EMC characteristics of the system to various degrees. The five-wire TN-S system is the best in this regard, while the isolated IT system is the…
