Dv/Dt Filter (Option L10); Figure 3-10 Circuit Diagram Option L10 - Siemens Sinamics SM150 6SL3845-2NN41-8AD0 Operating And Installation Instructions

Description
3.6 Description of options
3.6.12

dv/dt filter (option L10)

Pulses at the drive output stress the motor insulation The dv/dt filter is used to limit the voltage
gradient to max. 1 kV/µs. At the same time, the dv/dt filter is used to limit the capacitive
recharging currents of the motor cables, and therefore protects the motor insulation system.
The dv/dt filter is integrated in the power unit.
①
②
R1,R2,R3
L1, L2,L3
C1,C2,C3
M
N
Figure 3-10
Restrictions when using the output filter
● The pulse frequency of the drive must not exceed 200 Hz.
● The drive may be operated only with following maximum currents:
● The power loss increases by approx. 30 kW.
● The following cable length up to 200 m:
● The re-cooling unit requires 10 liter more flow
52
Drive
Motor
2.5 Ω
20 μH
1 μF
Center of the drive
Center point of the dv/dt filter
Circuit diagram option L10
– 4 kA drive: 1680 A (without filter 1750 A)
– 5 kA drive: 1780 A (without filter 1850 A)
dv/dt filter resistance
dv/dt filter reactor
dv/dt filter capacitor
Operating Instructions Rev.201908010908 EXAMPLE
SINAMICS SM150 6SL3845-2NN41-8AD0