Line Harmonics Filter Compact (Lhf Compact) As Option L01 For Sinamics G150 - Siemens SINAMICS G130 Engineering Manual

Fundamental Principles and System Description
Engineering Information
Line Harmonics Filters LHF should be positioned directly at the converter input whenever possible. In individual
cases, however, the low frequencies involved make it possible to locate the Line Harmonics Filter at a greater
distance from the converter, although the cable length should not exceed 100 m.
1.5.2.3

Line Harmonics Filter compact (LHF compact) as Option L01 for SINAMICS G150

Line Harmonics Filters compact (LHF compact) are available for the SINAMICS G150 converter cabinet units as
standard option L01 for cabinet integration, including parallel connections with power outputs of ≤ 1500 kW à
SINAMICS G150 Clean Power with integrated Line Harmonic Filter compact.
Integrating the LHF compact increases the cabinet width of the SINAMICS G150 converter cabinet unit by 400 mm or
600 mm depending on power rating (1200 mm for parallel connections).
Examples of SINAMICS G150 and SINAMICS G150 parallel connections with integrated Line Harmonics Filter LHF compact
SINAMICS G150 converter cabinet units with integrated LHF compact can be supplied with all available degrees of
protection from IP20 to IP54.
Converters with a Line Harmonics Filter compact can be optionally equipped with a main switch including fuses. A
main contactor or a circuit breaker are always essential (mandatory option L13 / main contactor or L26 / circuit
breaker). These components are installed in each case in the SINAMICS G150 Clean Power cabinet unit between
the mains supply connection and the LHF compact, so that the filter and converter are always protected and switched
as a common unit.
SINAMICS G150 Clean Power with integrated Line Harmonics Filter compact (LHF compact)
The relative short-circuit power RSC (Relative Short Circuit power) of the supply system must be at least RSC = 10. If
the short-circuit power is any smaller, the line-side resonant frequency will become detuned and the fundamental
wave of the line voltage may increase significantly until it reaches values beyond the permissible line voltage
tolerance of the converter.
It does not make technical sense to use Line Harmonics Filters compact with a 12-pulse power supply connection, as
this does not achieve any additional reduction in the harmonic effects on the supply.
Line Harmonics Filters compact can also be operated at ambient temperatures of > 40°C up to a maximum of 50 °C,
with the same derating factors applicable as to SINAMICS G150 converters.
Line Harmonics Filters compact can be used in both grounded systems (TN/TT) and non-grounded systems (IT).
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