CAIR
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Electrical Connection
PR-2009-0096-GB • Subject to modifications • R8-10/2015
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7
Electrical Connection
7.1
Requirements
Visual inspection of mechan-
ical components
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Carry out a full visual inspection of the entire unit and installed components.
•
Before you start setting up the unit electrical connections, check the following:
– The properties of the mains power supply must comply with EN 60204-1 regulations
and the power requirements of the unit.
– Let a qualified licensed electrician determine the size of the pre-fuse based of the
unit rated current.
– The motors must be able to operate at their rated capacity where the input voltage
with rated frequency is between 95% and 105% of the nominal voltage.
Notice!
The electrical connection may only be performed by a qualified licensed electri-
cian. The electricial must have proper professional training and experience in the
relevant accident prevention regulations, as well as other generally recognized
safety and occupational health codes, perform unit jobs.
Ensure and observe protective measures!
When installing and connecting the unit, also observe protective measures for
low-voltage systems according to the EU Directive as well as regulations and
codes of the local utility providers.
Ensure earthing and potential equalization of the individual sections and all con-
nected components.
Electrical connection must be assured and documented between all shipment
units (potential equalisation usually to be provided via screw connections).
Connect the entire unit to the same potential.
Passive switch contacts in explosion-protected units may only be used in intrinsi-
cally safe electric circuits.
Lightning protection!
Especially roof units must be equipped with a proper lightning protection system.
Electrocution through hazardous voltage will lead to death or serious injury.
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Disconnect the unit from the power supply and ensure the power cannot be
switched back on.
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Ensure the unit is voltage-free and isolated, earth and short circuit the unit, cover
or shield off neighboring live components.
NOTICE!
•
Perform all wiring to the unit in accordance with enclosed unit-specific wiring
diagrams and national electrical codes and regulations.
•
You must use a separate mains power cable.
•
Never connect other units to this mains power cable.
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Check all electric connections according to the supplied wiring diagrams and all
terminal block screws for a tight seat.