16 17
Figure 4-6 Fix the wall bracket
Figure 4-7 Mounting the inverter
3) Follow the instructions in the picture below to install the M10 assembling bolts (bolt, spring
washer, at washer) and tighten the bolts with torque wrench in the torque of 35-40N.m, see
Figure 4-6 for details:
4) Lift up the inverter with both hands, hang the back rail on the xed back bracket carefully,
see Figure 4-7 for details:
Handle
Handle
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) All DC switches at the bottom of the inverter must be turned to the "OFF" position.
3) The number and type of the PV modules connected in series in each string in a same 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 procedure
1) Select the appropriate photovoltaic cable according to the table below:
2) Strip o 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
Figure 4-8
Wire cross-setional area 2.5-4mm
2
7mm
4.3 Electrical Connection
Danger hint
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
terminals 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.
Danger
Warning
Attention
Attention
Warning
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