Daikin ERAD 120E-SL, Инструкция по установке, эксплуатации и обслуживанию

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Electrical components
All power and interface electrical connections are specified in the wiring diagram that is shipped with the machine.
The installer must supply the following components:
- Power supply cables (dedicated conduit)
- Interconnection and interface cables (dedicated conduit)
- Suitable line protection devices (fuses or circuit breakers, please see electrical data).
Power Circuit Wiring
A disconnect switch is factory-installed for isolating electrically the unit when switched off. Compressor overload and
short-circuit protection is accomplished by fuses installed in the electrical panel.
Proper phase sequence to the unit is required as far as the unit operation is concerned. All line-side wiring must be in
accordance with local regulation and be made with copper wire and copper lugs only. The table below is a reference only
for dimensioning protection devices and wiring.
CAUTION
In installations with power supply lines longer than 50 metres, phase-to-phase and phase-to-earth inductive couplings
between phases generate significant phenomena, namely:

unbalancing of phase currents

excessive voltage drop
In order to limit this phenomena, it is good practice to lay out the phase wires symmetrically, as described in the
figure.
Figure 17 - Installation of long power supply wires
Table 23 - Recommended Fuses and Field Wire Sizing
EWAD 100E ÷ 410E-SS
Model EWAD 100E-SS EWAD 120E-SS EWAD 140E-SS EWAD 160E-SS EWAD 180E-SS
Disconnect Switch Size 400 A 400 A 400 A 400 A 400 A
Short circuit rating (note 1) 25 kA 25 kA 25 kA 25 kA 25 kA
Recommended Fuses 125 A gG 160 A gG 160 A gG 200 A gG 200 A gG
Minimum Recommended Wire Size (note 2) 70 mm2 95 mm2 95 mm2 120 mm2 120 mm2
Maximum Wire Size (note 3) 2x185 mm2 2x185 mm2 2x185 mm2 2x185 mm2 2x185 mm2
Model EWAD 210E-SS EWAD 260E-SS EWAD 310E-SS EWAD 360E-SS EWAD 410E-SS
Disconnect Switch Size 400 A 400 A 400 A 400 A 400 A
Short circuit rating (note 1) 25 kA 25 kA 25 kA 25 kA 25 kA
Recommended Fuses 200 A gG 250 A gG 315 A gG 355 A gG 355 A gG
Minimum Recommended Wire Size (note 2) 120 mm2 150 mm2 2x95 mm2 2x95 mm2 2x120 mm2
Maximum Wire Size (note 3) 2x185 mm2 2x185 mm2 2x185 mm2 2x185 mm2 2x185 mm2
Note 1:
Short-circuit current ratings are referred to a 0.25 s duration of short circuit.
Note 2:
Correct wire sizing must take into account the actual ambient temperature of the installation and the protection device installed on-site.
Recommended wire size is made according to standard EN60204-1
– Table 6.E with the following assumptions:
- Recommended protection devices (fuses)
- 70°C PVC stranded copper conductors
- 40°C ambient temperature
Wire sizing is different as installation and operation conditions are different from the above mentioned values. The voltage drop from the
point of supply to the load must not exceed 5% of the nominal voltage under normal operating conditions. In order to comply with this
requirement, it can be necessary to use conductors having a larger cross-sectional area than the minimum value reported on the above
table.
Note 3:
Maximum wire size is the maximum allowed by the disconnect switch terminals. In case a larger conductor size is needed, contact
factory for asking special incoming lugs.