SINAMICS S120 Power Drive Systems (PDS) can be operated in the first and second environments. The measures necessary for operation in the respective environment are subsequently listed.

Measures for complying with product standard EN 61800‑3 second environment

Interference immunity

The SINAMICS S120 drive system is suitable for operation in the second environment.

Regarding interference immunity, SINAMICS S120 can be used in the first and second environments.

Interference emission – complying with Category C2 second environment

Regarding interference emission, to comply with the limit values according to EN 61800‑3 second environment, Category C2, the following measures must be applied:

• The drive system must be installed in compliance with EMC regulations by appropriately trained professionals.
• The SINAMICS S120 drive system requires a radio interference suppression filter, Category C2 (integrated as line filter, or as optional external line filter with/without line reactor)
• The pulse frequency is less than or equal to the rated pulse frequency
• The maximum motor cable length is complied with (shielded)
• Line supply with grounded neutral point (TN/TT supply system)

Device-specific assignment of the measures to comply with product standard EN 61800‑3 second environment, Category C2

¹⁾ Selection and ordering data for line filters and line reactors see sections Line-side power components.

²⁾ Refers to the pulse frequency of the Motor Modules.

Interference emission – complying with Category C3 second environment

All Active Line Modules in booksize format, Basic Line Modules in booksize format 100 kW as well as Line Modules in chassis format in the standard version are compliant.
A line reactor is required for Power Modules in chassis format.

The maximum cable lengths and pulse frequencies (see the previous table) must be taken into account.
For Active Line Modules in booksize format, when using an external line filter, the maximum cable length can be increased to 1000 m (3281 ft).

Interference emission – complying with Category C4 second environment

When connected to IT line supplies, only devices without integrated filter, Basic Line Modules in booksize format up to 40 kW, and all Smart Line Modules in booksize format are permissible. To limit symmetrical interference emission, suitable external filters without capacitors connected to ground must be used.

Further selected accessories are available from "Siemens Product Partner for Drives Options":
http://www.siemens.com/drives-options-partner

Measures for complying with product standard EN 61800‑3 first environment

Only PM240‑2 Power Modules in blocksize format can be used in the first environment.

Interference immunity

The SINAMICS S120 drive system is suitable for operation in the second environment.

Regarding interference immunity, SINAMICS S120 can be used in the first and second environments.

Interference emission – complying with Category C2 first environment

For use in the first environment, in addition to the requirements for use in the second environment, device-specific notes to maintain the harmonic current limits must be taken into consideration. Here, EMC product standard EN 61800‑3 makes reference to the standards pertaining to harmonic currents: EN 61000‑3‑2 and EN 61000‑3‑12.

Device-specific notes for complying with harmonic current limit values according to EN 61000‑3

• Power Modules with a power P_N в‰¤ 1 kW
  Complying with limit values according to EN 61000‑3‑2 cannot be guaranteed in this case. The installation company or company operating professionally used devices must obtain authorization to connect the device to the low-voltage grid from the responsible power utility company.
• Power Modules with a power P_N > 1 kW and a rated input current I_{rated, input} < 16 A
  These devices are not subject to any limit values regarding the harmonic currents, and can therefore be connected to the public low-voltage grid without prior authorization.
• Power Modules with a rated input current > 75 A
  There are no applicable standards when installing these types of devices. However, it is recommended that the utility company (grid operator) be informed when connecting such a device.

Device-specific measures to comply with harmonic current limit values:

¹⁾ Available from Siemens partners. Here, select "Solution Partner Finder", as technology "Drive Options":http://www.siemens.com/automation/partnerfinder

Example of calculating the minimum short-circuit power required

Determining the minimum short-circuit power S_SC for the Power Module in blocksize format FSD: 37 kW with U_line = 400 V and I_{rated, input} = 70 A

S_SC в‰Ґ 120 Г— в€љ3 Г— U_line Г— I_{rated, input}

The short-circuit power must be greater than 120 Г— 1.73 Г— 400 V Г— 70 A = 5812 kVA

As guide value, this typically corresponds to a low-voltage transformer with an apparent power of approximately 300 ... 400 kVA.

Note:

The installation company or company operating the device is responsible for ensuring that this device is only connected at a connection point with an appropriate short-circuit power (fault level), if this is necessary after consulting the power utility (grid operator).
The installation company or company operating the device requires authorization from the power utility (grid operator) in the following situations:

• Three-phase connection to a line supply with lower short-circuit power
• Three-phase connection without a line reactor
• Connecting single-phase devices with a rated input current I_{rated, input} >16 A

Maximum permissible cable lengths from the motor to the converter when using output reactors or filters depending on the voltage range and the Power Module being used

The following load-side power components in the appropriate frame sizes are optionally available for the Power Modules and result in the following maximum cable lengths:

¹⁾ Further information is available on the Internet at http://www.siemens.com/sinamics-g120/documentation

²⁾ The values apply for cables with low capacitance, e.g. MOTION‑CONNECT. When using standard CY cables, the maximum motor cable length is 50 m (164 ft) (shielded).

³⁾ The maximal cable lengths for frame sizes FSD to FSF will not be increased with a motor reactor. The motor reactor reduces the load on the motor windings by reducing the voltage gradients (dv/dt).