Dc Side Wiring - Growatt MOD TL3-XH Series Installation & Operation Manual

Suggested line length:
Model Wire cross-sectional area
MOD 3-6KTL3-XH
MOD 7-10KTL3-XH

6.3 DC side wiring

Sunlight will generate voltage on the battery panel.The high voltage
Ø
after the series connection may cause life danger.Therefore, before
connecting the DC input cable,you need to cover the battery panel with
an opaque material before operation,and ensure the reverse The DC
switch of the inverter is in the "OFF" state,otherwise the high voltage of
the inverter may cause life danger.
Danger
To avoid electric shock,do not touch the live parts,and connect the
Ø
terminals carefully.
Please make sure that the AC switch has been disconnected before
Ø
wiring.
Please ensure that the following conditions are met
cause a fire hazard or damage the inverter
does not carry out quality assurance and assumes any responsibility
The maximum open circuit voltage of each string of photovoltaic
Ø
modules shall not exceed 1100Vdc under any conditions.
PV modules connected in series in each PV string are of the same
Ø
specification type.
The maximum short-circuit current of each PV string must not exceed
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26A under any conditions.
The total output power of all PV strings must not exceed the
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maximum input power of the inverter.
In order to optimize the system configuration,it is recommended to
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connect the two inputs with the same number of photovoltaic modules.
Warning
If the inverter output is directly connected to the grid (that is, the
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output side is not connected to a low-frequency isolation
transformer),please ensure that the PV string is not grounded.
if the inverter input is connected with a specific type of thin-film
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battery module (PV-grounded),please connect the low-frequency
isolation transformer to the output terminal before turning it on,otherwise
the inverter will be damaged.
If a stable non-zero DC voltage is measured between the
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positive pole of the photovoltaic string and the ground,it means that
an insulation fault has occurred at a certain position in the
photovoltaic string.You need to ensure that the fault is repaired
before continuing the wiring.
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Maximum wire length
MOD TL3-XH series
6mm ：MAX40m 2
2
6-8mm
8mm ：MAX60m 2
6mm ：MAX40m 2
2
6-10mm
10mm ：MAX80m 2
,
otherwise it may
. ,
In this case the company
Note
The MOD series inverter has two independent inputs, as shown in the figure below:
Note: MOD 3-10KTL3-XH (2-channel string);
The following points should be concerned when choosing photovoltaic modules:
The photovoltaic modules of each photovoltaic string are of the same specification
Ø
and model.
The photovoltaic modules of each photovoltaic string are connected in series with
.
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the same number.
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input polarity is correct, that is, the positive pole of the photovoltaic
module is connected to the DC input terminal marked "+" of the inverter,
and the negative pole is connected to the DC input terminal marked "-".
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exceed the following limits.
Note
MOD 3-10KTL3-XH
Connect DC terminal
4~6mm²
4~6mm²
Moisture and dust penetration can damage the inverter.
Make sure that the waterproof cable gland is firmly tightened.
Ø
If the cable connector is not installed correctly,the inverter may be
Ø
damaged due to the penetration of moisture and dust.All warranty
claims are void.
Fig 6.5
Before connecting the battery panel, please make sure that the DC
The maximum DC input current and voltage of the inverter shall not
Single maximum input
Model
current
16A/16A
Positive metal terminal
Cables
Cables
Negative metal terminal
Fig 6.6
Maximum input voltage
1100V
Positive connector
Negative connector
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