gefran BDI50 Series User Manual page 28

3.3.7. Ground connection
Inverter Ground terminal must be connected to installation ground correctly and
according to the required local wiring regulations.
 Ground cable size must be according to the required local wiring
regulations. Ground connection should be as short as possible.
 Do not share the ground of the inverter with other high current loads (Welding
machine, high power motors). Ground each unit separately.
 Ensure that all ground terminals and connections are secure

Do not make ground loops when several inverters share a common ground point.
Note: Please leave at least 5cm while installing inverter side by side in order to provide
enough cooling space.
L1(L)
L1(L) L2 L3(N) T1 T2 T3 L1(L) L2 L3(N) T1 T2 T3
(a) Correct
L2 L3(N) T1 T2 T3
L1(L) L2 L3(N) T1 T2 T3
(b) Correct
L1(L) L2 L3(N) T1 T2 T3
L1(L) L2 L3(N) T1 T2 T3
3-18
L1(L) L2
L1(L) L2 L3(N) T1 T2 T3 L1(L) L2 L3(N) T1 T2 T3
(c) Incorrect
L3(N) T1 T2 T3