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3.3 Installation
3.3.1 Indoor installation
Place the machine at least at 1m from each wall and
the ceiling and provide suitable openings to allow
sufficient air flow for adequate cooling.
3.3.2 Outdoor installation
– Place the ESS on a horizontal, even and solid
floor.
– The ESS should be kept with the doors closed, in
order to avoid the ingress of water and dust.
– Leave enough space for operation, inspection and
maintenance (at least 1 meter at each side).
– Check that the inner earthing system is in
compliance with the local legislation.
– Use a cable of suitable section to connect the PE
terminal to an earth plate that can ensure an earth
resistance suited to the characteristics of the ESS.
– Check that the cable end of the earth pin is
connected to the earth terminal.
3.4 Connecting the ESS
3.4.1 Precautions for non-linear and
sensitive loads
The most common non-linear, 3-phase loads are thy-
ristor/rectifier-controlled loads, such as convertors
supplying voltage to variable speed motors, uninter-
ruptable power supplies and Telecom supplies. Gas-
discharge lighting arranged in single-phase circuits
generate high 3rd harmonics and risk for excessive
neutral current.
Loads most sensitive to voltage distortion include
incandescent lamps, discharge lamps, computers, X-
ray equipment, audio amplifiers and elevators.
Consult Atlas Copco for measures against the adverse
influence of non-linear loads.
For more information about indoor
installation, consult your local Atlas
Copco dealer.
The ESS is wired for a TN-system to
IEC 364-3, i.e. one point in the
power source directly earthed - in
this case the neutral. The exposed
conductive parts of the electric
installation must be directly con-
nected to the functional earth.
Non-linear loads draw currents with
high contents in harmonics, causing
distortion in the wave form of the
voltage generated by the alternator.
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