We recommend that you use screened cables for the
signal lines. Have separate cables for supply voltage
and signals, and separate grounds.
All cables must be fed into the casing through the pro-
vided cable glands. The connections are made in explo-
sion-proof terminal boxes or connection boxes which
have been approved for use in the respective zones
with potentially explosive atmospheres. No loose termi-
nals must be used in the terminal box or connection
box. Once you have connected the cables, tighten the
cable glands firmly in order to ensure IP protection
(IP 66). In areas with potentially explosive atmospheres
unused openings for cable penetration must be sealed
with certified dummy plugs.
5.6.1 Electrical connection
Personnel:
Skilled qualified electrician for Ex areas
Protective equipment:
Industrial safety helmet
Protective clothing
Protective gloves
Safety shoes
DANGER!
Danger of death due to electric current!
Danger of electric shock! Do not touch any live com-
ponents!
–
Only a skilled qualified electrician must connect
the power supply.
–
Lay connecting cables in such a way that they
cannot be accidentally damaged by mechanical
impact or by heat.
–
Earth the air handling unit according to the state
of the art.
–
Secure all connections so that they cannot come
loose.
–
When you connect any electrical components,
follow the manufacturers' specifications, the local
regulations and codes of good practice (DIN/
VDE), and the general recommendations for
avoiding electromagnetic interference,
–
If an AHU is installed outdoors, do not neglect
the effects of weather on the unit (rain, snow,
wind, sun etc.).
If you have to attach brackets or fasteners to the
AHU panels or frame, use only those specially
approved for your AHU as otherwise there is a risk of
leakages. Avoid screw joints that pierce the outer
shell of the unit; if you cannot avoid them, then at
least seal them to prevent the ingress of water. The
minimum protection level is IP 65.
1.
Connect the electrical components, such as
actuators.
There must be a mains isolator to de-energise the
unit (all phases). There must be local isolators to
de-energise (all phases) the fans. If mains isolator
and local isolator are not part of the supply
package, they have to be provided by others.
Careful! Explosion hazard!
2.
Include the air handling unit in the equipotential
3.
Test protective conductors and insulation resist-
ance to EN 60204 (VDE 0113). Take the appro-
priate safety precautions!
5.6.2 Connecting multileaf dampers
Personnel:
Skilled qualified electrician for Ex areas
Use only cables that are designed for the supply voltage
for which they will be used. The power rating is given on
the actuator rating plate. The length and cross section
as well as any contact resistance may increase voltage
losses.
The cables to be used must comply with ATEX. The
type of protection of the unit must not be compromised
by the connection of pipes, cables etc. Irrespective of
the type of protection, all cables to be used must have
been tested and approved according to the code of
good practice.
The connections are made in an explosion-proof ter-
minal box that has been certified for the relevant zones.
No loose terminals must be used in the terminal box.
Once you have connected the cables, tighten the cable
glands firmly in order to ensure IP protection (IP 66).
In areas with potentially explosive atmospheres unused
openings for cable penetration must be sealed with cer-
tified dummy plugs.
Installation
Connecting the air handling unit to the power su... > Connecting multileaf dampers
Air handling unit X-CUBE Ex
41
Содержание X-CUBE Ex
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