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5
ELECTRICAL INSTALLATION
5.1
General specifications
Refer to the specific wiring diagram of the unit which has been purchased. Should the wiring diagram not be on the unit or
should it have been lost, please contact your manufacturer representative, who will send you a copy.
In case of discrepance between wiring diagram and electrical panel/cables, please contact the manufacturer
representative.
All electrical connections to the unit must be carried out in compliance with laws and regulations in
force.
All installation, management and maintenance activities must be carried out by qualified personnel.
There is a risk of electric shock.
This unit includes non-linear loads such as inverters, which have a natural current leakage to earth. If an Earth Leakage
Detector is installed upstream the unit, a type B device with a minimum threshold of 300 mA must be used.
Before any installation and connection work, the unit must be switched off and secured. Since this
unit includes inverters, the intermediate circuit of the capacitors remains charged with high voltage
for a short period of time after being switched off.
Do not operate to the unit before 20 minutes after the unit has been switched off.
Electrical equipment is capable of operating correctly in the intended ambient air temperature. For very hot environments
and for cold environments, additional measures are recommended (contact the manufacturer representative).
The electrical equipment is capable of operating correctly when the relative humidity does not exceed 50 % at a maximum
temperature of +40 °C. Higher relative humidities are permitted at lower temperatures (for example 90% at 20 °C). Harmful
effects of occasional condensation shall be avoided by design of the equipment or, where necessary, by additional
measures (contact the manufacturer representative).
This product complies with EMC standards for industrial environments. Therefore it is not intended for use in residential
areas, e.g. installations where the product is connected to a low voltage public distribution system. Should this product
need to be connected to a low voltage public distribution system, specific additional measures will have to be taken to
avoid interference with other sensitive equipment.
5.2
Electrical supply
The electrical equipment can operate correctly with the conditions specificed below:
Voltage
Frequency
Armonics
Voltage unbalance
Voltage interruption
Voltage dips
5.3
Electric connections
Provide an electrical circuit to connect the unit. It must be connected to the copper cables with an adequate section relativ e
to the plate absorption values and according to the current electrical standards.
Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection.
Connections to the terminals must be made with copper terminals and cables, otherwise overheating
or corrosion may occur at the connection points with the risk of damaging the unit. The electrical
connection must be carried out by qualified personnel, in compliance with the laws in force. There is
a risk of electric shock.
To avoid interference, all control wires must be connected separately from the power cables. Use different electrical
passage ducts for this purpose.
Particular care must be taken when realizing wire connections to the switchbox; if not properly sealed, cable entries may
allow ingress of water into the switchbox which may cause damage to the equipment inside.
D–EIMAC01905-23_00EN - 38/53
Steady state voltage: 0,9 to 1,1 of nominal voltage
0,99 to 1,01 of nominal frequency continuosly
0,98 to 1,02 short time
Harmonic distortion not exceeding 10 % of the total r.m.s. voltage between live conductors for
the sum of the 2nd through to the 5
between live conductors for the sum of the 6th through to the 30th harmonic is permissible.
Neither the voltage of the negative sequence component nor the voltage of the zero sequence
component in three-phase supplies exceeding 3 % of the positive sequence component
Supply interrupted or at zero voltage for not more than 3 ms at any random time in the supply
cycle with more than 1 s between successive interruptions.
Voltage dips not exceeding 20% of the peak voltage of the supply for more than one cycle with
more than 1 s between successive dips.
th
harmonic. An additional 2 % of the total r.m.s. voltage
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