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5.4 Electrical Connections
5.4.1 Safety
DANGER
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
DC sides
WARNING
Danger of damage to electronic components due to
electrostatic discharge.
Take appropriate ESD precautions when replacing and
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:
Cable requirements:
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 is grounding line.
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.
Connection to the AC side terminal
a)
b)
c)
d)
Fig 6
5.4.3 Wiring DC Input
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
disconnect the DC connectors under load.
DANGER
5000-7000TL3-S
16A/400V
8000TL3-S
20A/400V
9000-12000TL3-S
25A/400V
15000TL3-S
3000-4000TL3-S
32A/400V
10A/400V
Outside diameter of cabel(mm)
AWG8
AWG10
AWG12
AWG14
Conductor
Cross section
38m
3000TL3-S
4000TL3-S
5000TL3-S
6000TL3-S
8000
TL3-S
9000
TL3-S
10000
TL3-S
11000TL3-S
12000TL3-S
13000TL3-S
15000TL3-S
40m
31.5m
Max. cable length(m)
18-25
28m
23m
25m
40m
17m
60m
64m
55m
44.5m
36.5m
27m
54m
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