SIEMENS
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Siemens D 31 · 2015
3
SINAMICS G110 standard inverters
0.12 kW to 3 kW (0.16 hp to 4 hp)
Line-side power components
■
Overview
Integrated EMC filter
Versions with integrated EMC filters class A and class B are
available for the corresponding environments.
•
Class A
The requirements are fulfilled when shielded cables with a
max. length of 10 m (32.8 ft) (for frame size FSA) or 25 m (82 ft)
(for frame sizes FSB and FSC) are used. The limits comply with
EN 55011 class A for conducted interference.
•
Class B
The requirements are fulfilled when shielded cables with a
max. length of 5 m (16.4 ft) are used. The limits comply with
EN 55011 class B for conducted interference.
An inverter with an integrated EMC filter can be used with a
30 mA residual-current circuit breaker and is only suitable for
installations with fixed wiring.
Inverters without filters, which are used with "EMC filter class B
with low leakage currents", have a leakage current <3.5 mA
(up to 5 m (16.4 ft) shielded motor cable).
Additional EMC filter class B
Available for inverters with an integrated EMC filter.
With this filter, the inverter complies with the emission standard
EN 55011, class B for conducted interference.
The requirements are fulfilled using shielded cables with a max.
length of 25 m (82 ft).
EMC filter, class B with low leakage currents
With this filter, the unfiltered inverter complies with the emission
standard EN 55011, class B for conducted interference. The
leakage currents are reduced to <3.5 mA.
Unfiltered inverters can, therefore, be used for drive systems in
Category C1 installations.
The requirements are fulfilled with
•
Shielded cables with a max. length of 5 m (16.4 ft)
•
Installation of the inverter in a metal housing (e.g. control
cabinet)
•
Pulse frequency of 16 kHz (only for frame sizes FSB and FSC)
With Category C1 installations, generally a pulse frequency of
16 kHz is recommended for inverter operation in the inaudible
spectrum and for quiet motor operation.
Line reactor
Line reactors are used to smooth voltage peaks or to bridge
commutating dips.
Line reactors also reduce the effects of harmonics on the
inverter and the power supply.
If the ratio of the rated inverter power to supply short-circuit
power is less than 1 %, a line reactor must be used in order to
reduce the current peaks.
In accordance with the specifications of EN 61000-3-12 "Limits
for harmonic currents with device input current
≤
16 A per
phase", there are special aspects for drives with 120 W to 550 W
and 230 V single-phase supplies which can be used in non-
industrial applications (environment 1).
For devices with 120 W to 370 W, either the recommended line
reactors must be installed or permission obtained from the
power utility company for the connection to the public supply
system.
In accordance with the specifications of EN 61000-3-12 "Limits
for harmonic currents >16 A and
≤
75 A per phase", permission
must be obtained from the power utility company to operate
drives connected to the public low-voltage line supply. For the
harmonic currents, see the Operating Instructions.
© Siemens AG 2014