Siemens SITRANS DA400 Operating Instructions Manual page 18

Connecting
5.1 General information and procedures
Warning
Electrical connection in hazardous zones with explosive atmospheres
Connection and operation in hazardous zones with explosive atmospheres should be done
only specially qualified personnel.
The national directives and laws for areas subject to explosion valid in your country must be
observed for electrical connection. Examples of these as found in Germany:
• Working reliability regulation
• Directive for the installation of electrical systems in areas subject to explosion DIN EN
If auxiliary power is required, check that it corresponds with that on the nameplate and with
the test certification valid for your country.
Warning
Grounding
As a matter of safety, shields on all shielded conduits should be two-sided, and the
associated functioning parts should be connected to the potential balance of the external
area.
Required tools
You will need the following screwdrivers:
• To open the housing: Screwdriver for M4 slotted screws
• For connecting terminals: Screwdriver for M2.5 slotted screws
• Shielding connections: T10 screwdriver for M3 Torx screws
• Grounding: T20 screwdriver for M4 Torx screws
5-2
60079-14 (previously VDE 0165, T1)
SITRANS DA400 with protection against explosion
Operating Instructions, 02/2006, A5E00684661-01