Electrical Connections - Growatt 8000TL3-S Installation & Operation Manual

5.4 Electrical Connections

5.4.1 Safety
Danger to life due to lethal voltages!
High voltages which may cause electric shocks are present in
the conductive parts of the inverter. Prior to performing any
work on the inverter, disconnect the inverter on the AC and
DANGER
DC sides
Danger of damage to electronic components due to
electrostatic discharge.
Take appropriate ESD precautions when replacing and
WARNING
installing the inverter.
5.4.2 Wiring AC Output
Conditions for the AC Connection
You must comply with the connection requirements of your utility operator.
All usages must comply with the regulations.
Residual-current protective device
The inverter is equipped with an integrated universal residual-current monitoring
unit.
If the network operator stipulates a residual-current protective device, you must use
a residual-current protective device that triggers in the event of a residual-current of
300 mA or more.
Load disconnection unit
You must install a separate three-phase miniature circuit-breaker or other load
disconnection unit for each inverter in order to ensure that the inverter can be safely
disconnected under load.
Measure the public grid voltage and frequency (Voltage: 400Vac; Frequency:
50Hz/60Hz; 3-Phase);
Open the breaker between the PV inverter and utility;
Specification of AC breaker:
7000TL3-S
8000TL3-S
9000-12000TL3-S
15000TL3-S
Cable requirements:
Outside diameter of cabel(mm)
Conductor
Cross section
7000TL3-S 8000TL3-S
AWG12 40m 32m
AWG10 60m 55m
/ /
AWG8
19
16A/400V
20A/400V
25A/400V
32A/400V
18-25
Max. cable length(m)
11000TL3-S
9000TL3-S 10000TL3-S 15000TL3-S
12000TL3-S
28m 25m 20m
44.5m 40m 37m
/ / /
Connection to the AC side terminal
1. The AC side terminals of the inverter are like the following figure,Fig. 6a, it is clear to
confirm that 'L1, L2, L3' represents three live line output, "N" represents neutral line
and
2. The five cables should be put through the protection shell, as Fig. 6 b, crimp five
standard cables with Cord End Terminal. Tighten all screws.Refer to Fig. 6c.
3. Fasten the protection shell onto the bottom of the inverter, make sure the four screws
are tightened, the completed appearance is like the below figure Fig. 6d.
5.4.3 Wiring DC Input
17m
27m
43m
is grounding line.
a)
c)
Fig 6
Danger to life due to lethal voltages!
Before connecting the PV array, ensure that the DC switch and AC
breaker are disconnect from the inverter. NEVER connect or
DANGER
disconnect the DC connectors under load.
b)
d)
20