Riello NXC 021 - Electrical Data Specifications

73
Installation
EN
2.11.1 Electrical data
NXC 017 NXC 021 NXC 026 NXC 033 NXC 040 NXH 026 NXH 033 NXH 040
Electrical characteristics
Powersupply V/Ph/Hz 400/3/50+N 400/3/50 400/3/50+N 400/3/50
Allowedvoltagerange V 340-460 360-440 340-460 360-440
Powersupplycircuitcontrol V 24Vwithinternaltransformer
Maximuminrushcurrent(Un)* A 75 95 118 118 176 118 118 176
Unitpowerfactor
withratedcapacity**
0.84 0.79 0.77 0.81 0.9 0.77 0.81 0.9
Maximumabsorbedpower** kW 7.8 9.1 11 13.8 17. 5 11 13.8 17.5
Powerfusecurrent(gGtype) A 25 32 40 50 63 40 50 63
Powercables sq.mm 5x2.5 5x2.5 5x4 5x4 1x16 5x4 5x4 1x16
ExternalCirculationPumpsMaximum
Current
A 1.30 1.40 2.40 2.60 2.80 2.40 2.60 2.80
* Maximuminstantinrushcurrent(maximumcompressorcurrentwithlockedrotor).
** Powerabsorption,compressorandfansaccordingtothelimitsof
 operationoftheunit(leavingwatertemperature18°C,outdoorairtemperature41°C)and400Vratedvoltage(platedata).
• thepowersupplyvoltagecorrespondstothenominalva-
lue
+/-10%,withamaximumphaseimbalanceof3%;
• all of the power network disconnect devices must be
equippedwithcontactopenings(4mm)inordertoallow
forcompletedisconnection,inaccordancewiththecon
-
ditions
requiredforovervoltageclassIII.
Itismandatoryto:
• have an omnipolar magneto-thermal circuit breaker and
a padlockable disconnecting switch compliant with the
IEC-ENStandards
(contactopeningofatleast4mm),with
adequate breaking and differential protection, installed
neartheequipment.
• Connectthedevicetoaproperlyfunctioningearthingsy
-
stem
• M
akesurethattheelectricalpowersupplysystemiscom-
pliant
withthecurrentnationalsafetystandards.
• Makesurethatthepowersupplylineimpedanceisconsi-
stent
withtheunit'spowerconsumption,asindicatedon
theunit'sdataplate.
• Foranyelectricalintervention,alwaysrefer tothewiring
diagramscontainedwithinthisbooklet.
Itisforbiddentousegasorwaterpipestoearththedevice.