8
Quick installation guide for RPI M15A M20A inverters
Connecting to the grid (AC)
7
DC SWITCH
O FF
O N
AC connector
Earthing System TN-S TN-C TN-C-S TT IT
Permitted Yes Yes Yes Yes No
Permitted earthing systems
3P3W 3P4W
L1-L2 400V
AC
± 20% L1-N 230V
AC
± 20%
L1-L3 400V
AC
± 20% L2-N 230V
AC
± 20%
L2-L3 400V
AC
± 20% L3-N 230V
AC
± 20%
AC grid voltage requirements
TT is not recommended. The voltage of N has to
beveryclosetoPE(difference<20V
rms
)
Usewireendsleeves(bootlacepins)oneachwire.
Usewireendsleeves(bootlacepins)oneachwire.
DANGER
Risk of death or serious injury from electrocution
► Set the DC disconnection switch to position OFFbefore
connecting or disconnecting the AC plug.
► For a description how to set the AC connection type on the
display, see “Setting the AC connection type”, p. 20.
The AC Plug Amphenol C16-3 is included in
the delivery box
L 1
L 2
PE
N
L 3
1 = L 12 = L 2
4 = N3 = L 3
= PE
Wiring AC plug for 5-wire systems
L 1
L 2
PE
L 3
1 = L 12 = L 2
3 = L 3
= PE
Wiring AC plug for 4-wire systems
Wiring for 3P4W grid systems: 3 phases with 4 wires (L1, L2, L3, N) + PE
Wiring for 3P3W grid systems: 3 phases with 3 wires (L1, L2, L3) + PE
Usewireendsleeves(bootlacepins)oneachwire.
Usewireendsleeves(bootlacepins)oneachwire.