Growatt MID 1 7 KTL3-X1 - DC Side Wiring

Suggested line length:
Inverter model
Cross-section area
Recommendation
Cable outer diame-
ter
MID 1 7 KTL3-X1
10-16
10
40
MID 20KTL3-X1
10-16
10
40
MID 22 KTL3-X1
10-16
10
40
MID 25 KTL3-X1
10-16
10
40
MID 30KTL3-X
10-16
16
40
MID 33KTL3-X
10-16
16
30
MID 36KTL3-X
14-20
16
30
MID 40KTL3-X
14-20
16
30
6.3 DC side wiring
19
Danger
Warning
> Sunlight will generate voltage on the battery panel.The high volt-
age after the series connection may cause life danger.Therefore, be-
fore 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 volt-
age of the inverter may cause life danger.
> To avoid electric shock,do not touch the live parts,and connect
the terminals carefully.
> Please make sure that the AC switch has been disconnected before
wiring.
Please ensure that the following conditions are met, otherwise it may
cause a fire hazard or damage the inverter. In this case, the com pany
does not carry out quality assurance and assumes any responsibility.
> The maximum open circuit voltage of each string of photovoltaic
modules shall not exceed 1100Vdc under any conditions.
> PV modules connected in series in each PV string are of the same
specification type.
> The maximum short-circuit current of each PV string must not ex-
ceed 26A under any conditions.
> The total output power of all PV strings must not exceed the max-
imum input power of the inverter.
> In order to optimize the system configu ration,it is recommended
to connect the two inputs with the same number of photovoltaic mod-
ules.
> If the inverter output is directly connected to the grid (that is, the
output side is not connected to a low-frequency isolation trans-
former),p lease ensure thatthe PV string is not grounded.
If the inverter is a specific type of thin -film 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 positive
pole of the photovoltaic string and the ground,it means that an insu-
lation fault has occurred at a certain position in the photovoltaic
string.You need to ensure that the fault is repaired before c ontinuing
the wiring.