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Electrical installation
18
Connection of the potential-free contact and of
the external test:
1. Selection of the suitable cable.
2. Connection to X2 and X3,
as shown in the adjacent illustration.
3. The installation steps are the same
as for the power supply connection.
4. If the potential-free contact carries voltage
that is dangerous in the case of contact,
a corresponding separator must also be
provided, as described above.
5. When using the potential-free contacts and the
connection external test, sufficient clearance to
the other parts of the unit, or suitable insulation
in accordance with EN 60664-1 must be ensured.
6. When using a multiwire, common line for the
connection of the potential-free contact and the
external test, this line must be suitable for the
highest occurring voltage and the intended
temperature range with regard to its nominal
ratings.
BEKOMAT® 33U / 33U CO
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