Safety Information - Siemens SINAMICS S120 Equipment Manual

Booksize DC Link Components
5.4 Voltage Clamping Module
5.4.2

Safety information

Risk of electric shock. A hazardous voltage is present for up to 5 minutes after the power
supply has been switched-off.
It is only permissible to open the protective cover after this time has expired.
When opening the protective cover for the DC link, you must activate the release.
A suitable tool (e.g. screwdriver) must be used for this purpose.
The components must only be operated when the protective cover of the DC link is closed.
Damaged components must not be used further, as this could result in secondary damage
or accidents.
The Voltage Clamping Module conducts a high leakage current via the functional ground.
This means that a permanent PE connection must be provided for the cabinet (PE) rail.
Other than that the following measures must be taken in accordance with EN 61800-5-1:
Either protective ground conductor cross-sections ≥ 10 mm
protective ground conductor of the same cross-section as the first one.
NOTICE
It is not permissible to use a green/yellow cable for the functional ground of the Voltage
Clamping Module.
The Voltage Clamping Module includes capacitors that are connected with respect to the
functional ground. This is the reason that when carrying-out a high-voltage test in the
system, the components must be disconnected from the functional ground.
The DC link discharge voltage hazard warning in the local language must be attached to all
of the components.
A set of labels in 16 languages is supplied with the component.
A ventilation clearance of 80 mm above and below the components must be observed.
It is only permissible to establish connections to the DC link using the adapters that
SIEMENS has recommended (DC link adapter and DC link rectifier adapter).
356
DANGER
WARNING
DANGER
DANGER
WARNING
DANGER
Cu or installation of a second
2
SINAMICS S120 Booksize Power Units
Equipment Manual, (GH2), 07/2007, 6SL3097-2AC00-0BP5