BARTEC BENKE HYGROPHIL H 4230-12 Ex Zone II, Operating Instructions Manual, Page: 38 / 112

Installation
32
Operating Instructions HYGROPHIL® H 4230-12 BA 060207
3.3 Connection instructions
3.3.1 Assignment of terminals
3.3.2 Mains connection
 Wiring must be carried out exclusively by specialists who are familiar
with the valid local regulations for setting up power installation rated for
up to 1000 volts.

Check whether the voltage of the mains corresponds to that on the rat-
ing plates of the equipment and gas sampling hose.
 All cables that are used must be selected in accordance with DIN/VDE
or the relevant national regulations.
 Install an all-pole switch near the equipment to switch the equipment on
and off.

Run the mains cable through the (anti-kink) cable gland on the right.

Connect the mains voltage cable to terminals 27 (L), 28 (N) and 29 (PE).
 Do not disconnect the yellow/green protective earth conductors or those
labelled „PE“ at any point.

Wire all power consumers within a complex system, including the protec-
tive earth conductors, in a star connection. Avoid sequential wiring.
 Under no circumstances use the unit’s supply terminals as a terminal for
other loads.

In the case of interference-prone power supplies, it is a good idea to
connect an isolating transformer on line side, and also a mains filter if
required.
 If there are several units in one system, each must be protected sepa-
rately against short circuits and equipped with a disconnector.

When the work is finished, tighten the threaded joints on the cable
glands. This ensures that the degree of protection is observed and pro-
vides strain relief.

Check that the protective earth conductor is connected correctly.
OUT 1 OUT 2
External
water
detector
Warning
relay
T1
external
Heating Mains
+
IN
–
L N PE
+ –

+ –
Error
relay
L N PE
PROFIBUS
+5V A B 0V