Overload Capability - Siemens SINAMICS S120 Manual

Motor Modules
6.2 Motor Modules Chassis-2
Article number
Recommended fuse acc. to IEC
- Number per phase (connected in parallel)
- Rated current
- Frame size acc. to IEC 60269
Recommended fuses according to UL
Type 3NB1/3NB2
- Rated current
The value for I is valid for a pulse frequency of 2 kHz. It is also valid for a pulse frequency of 2.5 kHz, if p0290 is set = 12
1)
H
(automatic pulse frequency and output current reduction for a thermal power unit overload).
Rated power of a typical 6-pole standard induction motor based on I
2)
Rated power of a typical 6-pole standard induction motor based on I
3)
The specified power loss is the maximum value for a 100 % utilization level. The value in normal operation is lower.
4)
When used in the TN system and with infeed via Active Line Module and when operating the Motor Modules Chassis-2
5)
with an increased pulse frequency, you will receive the permitted motor cable lengths upon request.
When using fuses connected in parallel in each phase, all of the fuses must be replaced if one fuse ruptures.
6)
To achieve a UL-approved system, it is absolutely essential to use the fuse types specified in the table.
7)
6.2.8.2

Overload capability

The Motor Modules Chassis-2 have an overload reserve (e.g. to handle breakaway torques).
In the case of drives with overload requirements, the appropriate base-load current must,
therefore, be used as a basis for the required load.
The overloads apply under the precondition that the Motor Module is operated as a
maximum with its base load current before and after the overload; this is based on a duty
cycle of 300 s (low overload, high overload) - or 60 s (S6 duty cycle).
Another precondition is that the Motor Module is operated at its factory-set pulse frequency
at output frequencies > 10 Hz.
Additional information on the overload capability is provided in the Low Voltage
Configuration Manual and in the SINAMICS S120 Function Manual Drive Functions.
322
6SL3321– 1TE41–5AA0
3NC3342-1U
2
6)
A 1100
3
7)
3NB2364-
4KK17
A 2100
or I at 3 AC 400 V 50 Hz.
L H
or I at 3 AC 460 V 60 Hz.
L H
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3
Air-cooled chassis power units