3 | Assembly
FISCHER Mess- und Regeltechnik GmbH
14/56
BA_EN_DA03_GKT_HLP_ATEX
3.3 Electrical connections
DANGER
Operation in areas at risk of explosion
If operated in explosive areas, the electrical data of the unit and the valid local
regulations and guidelines for the installation and operation of electrical systems
in explosive areas must be observed.
• The electrical connection may only be realised by authorised and qualified
specialists that have undergone additional training or briefings or have a
permit to work on explosion-protected units in potentially explosive systems.
• Risks emanating from electrical current or voltage should be prevented by
means of suitable action.
• When connecting the unit, the national and international electro-technical
regulations must be observed.
• Disconnect the system from the mains, before electrically connecting the
device.
• Do not connect the connector if strained.
• Install the consumer-adapted fuses.
Fig. 9:
Ground connection
Only devices with contact elements are connected to the electrical supply. To
this end there is a cable socket on the side of the device, or a HAN plug in the
power plant version.
The outer ground connection must always be connected to the protective poten-
tial equalisation or a similar local potential equalisation. The connection is suit-
able for connecting fine-wire conductors up to 4 mm
2
or single-wire conductors
up to 6 mm
2
.
3.3.1 Cable socket / HAN plug
1
2
3
4
5
6
M20 x 1.5
Fig. 10:
Cable socket
1
Lower part
2
Sealing ring EPDM
3
Middle part
4
Sealing ring EPDM
5
Lid
6
Lid screw
