16
17
Figure 4-6 Fix the wall bracket
Figure 4-7 Mounting the inverter
Before drilling, make sure to avoid the buried water tube and electric wires
in the wall to avoid danger.
2) Use an electrical driller with 10mm diameter bit to drill 5 holes on the wall and make sure
hole depth is 80mm.
3) Insert the expansion tubes into the holes and tighten them, then fix the bracket onto the
wall with expansion screws by using a cross screwdriver, as shown in Figure 4-6:
4.2.2 Mounting the inverter
Lift up the inverter with both hands, hang the back rail on the fixed wall bracket carefully, see
Figure 4-7 for details:
Warning
4.3 Electrical Connection
Danger hint
4.3.1 Inverter PV string connection
4.3.1.1 The following principles must be considered when making electrical connections to the
inverter:
1) Disconnect the AC breaker on the grid side.
2) The DC switch of the inverter must be turned to the "OFF" position.
3) The number and type of the PV panels connected in the two strings of one MPPT must be
same.
4) Make sure the maximum output voltage of each PV string does not exceed 1100V.
4.3.1.2 DC connector assembly procedures
1) Select the appropriate photovoltaic cable:
2) Peel off the DC cable insulation sleeve for 7 mm, as shown in Figure 4-8:
Cable type
Conductor cross-setional area (mm²)
General photovoltaic cable
Scope (mm²)
Recommended value (mm²)
2.5-4.0
4.0
A high voltage in the conductive part of the inverter may cause an electric
shock. When performing any installation on the inverter, make sure that the AC
and DC sides of the inverter are completely de-energized.
Do not ground the positive or negative pole of the PV string, otherwise it will
cause serious damage to the inverter.
Static may cause damage to the electronic components of the inverter. Anti-
static measures should be taken during the repairing or installation.
Do not use other brands or other types of PV terminals other than the PV
terminal in the accessory package. Sunways has the right to refuse all damages
caused by the mixed-use of terminals.
Moisture and dust can damage the inverter, ensure the cable gland is securely
tightened during installation. The warranty claim will be invalided if the inverter
damaged by the cable connector not well installed.
Figure 4-8
Wire cross-setional area 2.5-4mm
2
7mm
Danger
Warning
Attention
Attention
Warning
