High Overload And Low Overload - Siemens SINAMICS G120 Operating Instructions Manual

Technical data

11.2 High Overload and Low Overload

11.2 High Overload and Low Overload
Permissible inverter overload
The inverter has two different power data: "Low Overload" (LO) and "High Overload" (HO),
depending on the expected load.
Figure 11-1
Note
The base load (100% power or current) of "Low Overload" is greater than the base load of
"High Overload".
We recommend the "SIZER" engineering software to select the inverter based on duty
cycles. See Configuring support (Page 305).
Definitions
• LO input current
• LO output current
• LO power
• HO input current
• HO output current
• HO power
If the power data comprise rated values without any further specifications they always refer
to an overload capability corresponding to Low Overload.
274
Duty cycles, "High Overload" and "Low Overload"
100 % of the permissible input current for a load cycle according to
Low Overload (LO base load input current).
100 % of the permissible output current for a load cycle according
to Low Overload (LO base load output current).
Power of the inverter for LO output current.
100 % of the permissible input current for a load cycle according to
High Overload (HO base load input current).
100 % of the permissible output current for a load cycle according
to High Overload (HO base load output current).
Power of the inverter for HO output current.
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
SINAMICS G120C Inverter