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22 762.885 Z05 2012 coolcept_fleX, coolcept³_fleX
Connection to 2-phase grid
1. Connect the N and L connection of the AC plug (5) between the L1 (3) and L2 (4)
outer conductors of the grid cable.
2. Connect PE cable (2) to PE connection on the AC plug.
Connection to 3-phase grid
In the 3-phase grid, there are 3 outer conductors in the cable:
1. Connect N and L connections of the AC plug between any 2 outer conductors (be-
tween L1 and L2, or L1 and L3, or L2 and L3).
2. Connect PE cable to PE connection on the AC plug.
Voltage distribution in the 2 and 3-phase grid
The voltage in 2 and 3-phase grids is the same in every outer conductor: 100 V to 127 V.
320 V to 480 V grid voltage
Connect conductors N, L1, L2, L3, and PE on the AC plug in 3-phase grid with 320 V to
480 V grid voltage.
The protective earth PE does not have any function in the 3-phase inverter and must not
mandatorily be connected as the inverter meets the requirements for protection class II.
L1 conductor
L2 conductor
L3 conductor
PE conductor
N conductor
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