KA IMO 2021 6 V2.1

systemair 27
2.3.6 Connection of electrical installation
Electricalinstallationsmustbeconnectedsoasnottopreventorhinderthechecking,servicingorreplacementof
functional components. Connection must be carried out in accordance with the design documents, the manufacturer’s
guidelines and the provisions of the technical regulations and standards.
Theinstallerandusershouldbeawareoftherisksarisingfromlightning.Theinstallationofovervoltageprotection
devices,whichsafelydiverthighvoltageenergyintheeventofalightningstriketoearth,mustbeimplementedin
accordance with local regulations.
The penetration of power and control cables through the casings or internal partition walls must be carried out so as
to ensure the protection of cables from damage in contact with sharp metal sheet edges. All the penetrations must be
airtight. For penetrations of cables through partition walls and other structural elements inside the casing, membrane
rubberttingsorcableglandsofappropriatesizesmustbeapplied.Inmostcases,theholesforsuchttingsare
punchedandthettingsareinstalledinthefactory.
For penetrations of cables through casing walls, cable glands and custom-made extension pieces must be applied. For
penetrationsofcablesthroughtwocasingwalls,e.g.inthecaseofstackedorparallelunits,applycombinationsof
rubberttingsandstiffPVCtubesorcableglandsandcustom-madeextensionpieces.
Power cord size according to the electrical power and lenght can be determined in the table below.
Caution
Electric power is provided for three-phase current.
Sensors, actuators and other external measuring equipment can be connected with a 0.75 m2 cable.
Power Current 1.5 2.5 4 6 10 16 25 35 50 70 95
kW (3p) A mm
2
mm
2
mm
2
mm
2
mm
2
mm
2
mm
2
mm
2
mm
2
mm
2
mm
2
1,5 2.3 100 m 165 m 265 m 395 m - - - - - - -
3 4.6 33 m 84 m 135 m 200 m 335 m 530 m - - - - -
4,5 6.8 30 m 57 m 90 m 130 m 225 m 355 m 565 m - - - -
6 9 25 m 43 m 68 m 100 m 170 m 265 m 430 m 595 m - - -
7,5 11.5 20 m 34 m 54 m 80 m 135 m 210 m 340 m 470 m 630 m - -
9 13.5 17 m 29 m 45 m 66 m 110 m 180 m 285 m 395 m 520 m - -
10,5 16 14 m 24 m 39 m 56 m 96 m 155 m 245 m 335 m 450 m - -
12 18 - 21 m 34 m 49 m 84 m 135 m 210 m 295 m 395 m 580 m -
13,5 20 - 19 m 30 m 44 m 75 m 120 m 190 m 260 m 350 m 515 m -
15 23 - - 27 m 39 m 68 m 105 m 170 m 235 m 315 m 460 m 630 m
18 27 - - 23 m 32 m 56 m 90 m 140 m 195 m 260 m 385 m 530 m
21 32 - - - 28 m 48 m 76 m 120 m 170 m 225 m 330 m 460 m
24 36 - - - - 42 m 67 m 105 m 145 m 195 m 290 m 400 m
27 41 - - - - 38 m 60 m 94 m 130 m 175 m 255 m 355 m
30 45 - - - - 34 m 54 m 84 m 120 m 155 m 230 m 320 m
36 55 - - - - - 45 m 70 m 92 m 130 m 190 m 265 m
42 64 - - - - - 38 m 60 m 84 m 110 m 165 m 230 m
48 73 - - - - - - 53 m 74 m 99 m 145 m 200 m
54 82 - - - - - - 47 m 65 m 88 m 125 m 175 m
60 91 - - - - - - - 59 m 79 m 115 m 160 m