Dv/Dt Filter Plus Voltage Peak Limiter (Option L10) - Siemens SINAMICS G150 Operating Instructions Manual

4.10.2

dv/dt filter plus Voltage Peak Limiter (option L10)

Description
The dv/dt filter plus Voltage Peak Limiter comprises two components: the dv/dt reactor and
the Voltage Peak Limiter, which cuts off the voltage peaks and returns the energy to the DC
link.
The dv/dt filters plus Voltage Peak Limiter must be used for motors for which the proof
voltage of the insulation system is unknown or insufficient. Standard motors of the 1LA5,
1LA6 and 1LA8 series only require them at supply voltages > 500 V +10%.
The dv/dt filter plus Voltage Peak Limiter limits the rate of voltage rise to values < 500 V/µs
and the typical voltage peaks to the values below (with motor cable lengths of < 150 m):
● < 1250 V at 660 V < U
When using option L10, for each Motor Module, an additional cabinet is required with a width
of 600 mm.
Restrictions
The following restrictions should be noted when a dv/dt filter plus Voltage Peak Limiter is
used:
● The output frequency is limited to a maximum of 150 Hz.
● Maximum permissible motor cable lengths:
– Shielded cable: max. 300 m
– Unshielded cable: max. 450 m
NOTICE
Damage to the dv/dt filter by exceeding the maximum output frequency
The maximum permissible output frequency when using a dv/dt filter is 150 Hz. The dv/dt
filter can be damaged if the output frequency is exceeded.
• Operate the dv/dt filter with a maximum output frequency of 150 Hz.
NOTICE
Damage to the dv/dt filter by exceeding the maximum pulse frequency
The maximum permissible pulse frequency when using a dv/dt filter is 2.5 kHz. The dv/dt
filter can be damaged if the pulse frequency is exceeded.
• When using the dv/dt filter, operate the Power Module with a maximum pulse frequency
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
line
of 2.5 kHz.
< 690 V.
Electrical installation
4.10 Other connections
121