Technical data

3) DC cable connection

To ensure the optimum performance of the inverter, please read the

following guidelines before DC connection:

(a) Confirm the DC configuration referring to Table 3-5 and ensure that the

maximum open circuit voltage of the PV modules is lower than 1000

Vdc under any conditions;

(b) Confirm that the PV strings for each MPPT of the inverter are of the

same type and specification before connection. The number,

orientation, and tilt of PV strings may differ for different applications.

with the cables of PV strings according to the following steps:

i. Use a multi-meter to measure the PV strings’ cable ends and check

the polarity.

ii. The positive (+) terminal of cable should match the positive (+)

terminal of inverter’s DC input.

iii. The negative (-) terminal of cable should match the negative (-)

terminal of inverter’s DC input.

Figure 3-20 Polarity check

(d) Knock out the holes of the DC side and plug the suitable conduits of

NOTICE:

It is important to use a multi-meter to check the polarity of DC input

cables to avoid any risk of reverse polarity.