KEB COMBIVERT F5 Instructions For Use Manual - 9 Dimensioning
9 Dimensioning
9.1 Dimensioning Instructions
The dimensioning of the KEB COMBIVERT F5 AFE occurs to the maximum permissible
input rated current. The power specifications refer to 400 Vac rated input voltage.
The DC current is dependent on the adjusted DC voltage and is not measured sepa-
rately.
Precharging
Depending on the mains input circuit of the AFE unit either the „max. external charging
current“ Iext or the „max. permissible DC link capacity“ Cext must be observed (see
„Technical data of KEB COMBIVERT drive converters“
)!
Furthermore observe the required waiting period between two switch-on procedures to
protect the pre-charging resistors.
Mains input circuit type A:
No current limitation for external connected DC units is available at DC terminals (mark-
ing ++, --) of type A. Current limitation must be ensured by the external connected units.
The maximum external charging current may not be exceeded (see
.
Mains input circuit type D1:
The current limitation of type D for the connected units at the DC terminals (marking +
PA, -) occurs by the integrated charging current limit. The specified maximum permis
-
sible DC capacity may not be exceeded by the connected units.(see
.
Max. permissible total charging current (Ipre)
The current indicates the maximum expected current during the precharging procedure
and can be used for dimensioning of the pre-charging contactor.
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DIMENSIONING