AC CONNECTION
(3) After the DC connector is connected,
use a multimeter to measure the
voltage of the DC input string, verify the
polarity of the DC input cable, and
ensure that the voltage of each string is
within the allowable range of the
inverter, as shown in Figure 15
(4) Connect the DC connector with the
inverter and ensure tightly-fastened;
(5) When removing the DC connector
from the inverter, insert the head of the
straight screwdriver into the raised hole
in the middle of the connector, and force
the movable end of the connector to
exit.
AC connection steps of single-phase
inverter:
(1) Before connecting the single-phase
AC grid cable to the inverter, take
lightning and short circuit protection
measures in accordance with the local
electrical safety codes;
(2) As shown in Figure 16, connect and
fasten L, N and PE conductors of the
single-phase AC grid to AC terminal and
tighten to 0.5 Nm. Assemble the AC
terminal and tighten to 2.5-3 Nm, then
connect the terminal to the AC port of
the inverter.
(3) Connect the DC output cable of the
PV module to the DC connector which
provided by our company, and then
connect the DC connector to the DC
terminal of the inverter.
Figure 15 DC input voltage measuring
Figure 16 AC connection of single-phase inverter
• Only qualified cables under the local electrical safety laws and
regulations and comply with the technical parameters of this
manual are allowed to connect to the inverter.
• Only with the permission of the local electric power company can
the inverter be connected to the utility grid.
