Installation Manual
32
Incorrect cable connection sequence may cause fires. Connect the parts in
correct order.
Ensure connection firmness. Poor connection or oxidation of the contact
surface may cause overheating and fires.
The selected bolts should be of appropriate length, a little bit longer than the
depth of installation hole. Otherwise, the insulation performance may be
impaired or a short circuit may be caused.
Check if any heat-shrinkable tubing is caught between the cable lug and the
copper bus bar
,
and remove it immediately if so
.
Otherwise, poor contact or
even device damage may be caused
.
Step 6
Ensure that the cables are firmly in place.
7.9
AC Side Cable Connection
7.9.1
Safety Precautions
Incorrect cable connections on the AC side can cause abnormal operation or
even damage to the inverter!
Lethal electrical shock from inadvertent touching on the live components!
Ensure the AC switches are disconnected and the terminals are voltage-free.
The connection to the grid must be approved by the related department and
comply with the grid-related safety regulations.
There are two inverter versions: supporting AC parallel connection and not
supporting AC parallel connection. If the purchased device does not support the
AC parallel connection, do not directly connect the AC outputs of the inverter in
parallel.
Perform cable connections strictly according to the wiring identifications inside
the device.
Open/Close the AC switches strictly according to the internal marks.
7.9.2
Cable Routing
AC cables should be routed in groups to avoid three-phase current unbalance. Each group
