Technical data

PVI 3000/4000/5000/5300 Installation and Operation Manual

WARNING!

Route the DC wires to the PVI 3000-5300 inverters away from any possible hazards that could damage to

the wires (such as sharp corners, edges or near covers where wires could be pinched or crushed).

WARNING!

Hazardous voltage is still present on the inverter after disconnection of all PV DC inputs. Allow 5 minutes

for the inverter to discharge the DC voltage completely.

· There are up to four (4) independent PV strings (4 pairs) can be connected to the PVI 4000-5300 inverter as shown in the

figure 2.3.11. The PV strings will be connected in parallel in the wiring box. Therefore, these four (4) PV strings shall be

the same capacity (or at least the same total voltage).

Bypassing Fused Combiner

If no (fused) combiner is required, as in the case of a fused combiner on the roof with the PV array, then the fused

combiner in the PVI 3000-5300 can be bypassed by using the “Ungrounded (+)” bypass terminals (2) to the right of fuses.

Up to 2 PV circuits can be connected (2 lugs). The “Grounded (-)” connections still are to be connected to the “Grounded

(-)” terminal block.

Fig 2.3.11 PV- String connections and AC connections

2.4 Connection of Communication wiring

The PVI 3000-5300 inverter supports two common data interface standards, RS-232 and RS-485 that will be used to

communicate to the remote computer or communication gateway. Only one of the communication interfaces can work at a

time. As shown in the Figure 2.4.4, there are two RJ-45 connectors, RJ45-R and RJ45-L that are located on the bottom of the

wiring box. The pin numbers of the RJ-45 connectors and the corresponding signals are described in the Figure 2.4.2 below.

If the RS485 is used as the external communication interface and the inverter is the last device in the RS485 loop, then the

termination switch shall be put to ON position (shown in the figure 2.4.3). The installer needs to open the front cover of the

wiring box to switch the termination switch to ON position. The termination switch is default set to OFF position.

PV+

PV-