Burkert Type 8035 - Manual (Page 31)

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Installationandwiring
7.6.1 equipotentiality of the installation
To ensure the equipotentiality of the installation (power supply - device - fluid):
→
Connect together the various earth spots in the installation to eliminate the potential differences that may
occur between different earthes.
→
Observe faultless earthing of the shield of the power supply cable, at both ends.
→
Connect the negative power supply terminal to the earth to suppress the effects of common mode currents. If
this connection cannot be made directly, a 100 nF/50 V capacitor can be fitted between the negative power
supply terminal and the earth.
→
Special attention has to be paid if the device is installed on plastic pipes because there is no direct earthing
possible. Proper earthing is performed by earthing together the metallic instruments such as pumps or valves,
that are as close as possible to the device. If no such instrument is near the device, insert metallic earth rings
inside the plastic pipes upstream and downstream the device and connect these parts to the same earth. The
earth rings must be in contact with the fluid.
+
-
(*)
12-36VDC
Power supply
Metallic pipes
Power cable shield
+
-
(*)
12-36VDC
Power cable shield
Equipment such as
valves, pumps,...
Plastic pipes
Power supply
(*) If a direct earth connection is not possible, fit a 100 nF/50 V capacitor between the negative power supply terminal and
the earth.
Figure 16: 8025 compact version and 8035, equipotentiality skeleton diagrams
English
Type 8025 - 8035 BATCH