Safety Information - Siemens SINAMICS S120 Equipment Manual

6.3.2

Safety information

Caution
The ventilation clearances of 100 mm above and below the components must be observed.
Note
The connecting cables to the Power Module or Motor Module must be kept as short as
possible (max. 5 m).
Caution
The terminals on the voltage limiting network (Voltage Peak Limiter) must always be
connected as specified below:
• Cable from the DC link to the Power Module
• cable to the dv/dt reactor to 1U2, 1V2, 1W2.
Failure to connect the terminals correctly could damage the voltage limiting network.
Caution
dv/dt filters with Voltage Peak Limiter that SIEMENS has not approved for SINAMICS might
sustain thermal damage when used in a SINAMICS unit.
Caution
The surface temperature of the dv/dt reactors can exceed 80 °C.
Caution
The maximum permissible output frequency when using dv/dt filters with Voltage Peak
Limiter is 150 Hz.
Danger
dv/dt filters with Voltage Peak Limiter discharge a high leakage current to the protective
ground conductor.
Due to the high leakage current associated with dv/dt filters, they or the relevant control
cabinet must be permanently connected to PE.
Other than that the following measures must be taken in accordance with EN 61800-5-1:
Either protective ground conductor cross sections ≥ 10 mm² Cu or installation of a second
protective ground conductor of the same cross section as the first one.
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Motor-Side Power Components
6.3 dv/dt filter with Voltage Peak Limiter
Motor Module to DCPS, DCNS and
or
6-13