1.Improper operation during the wiring process can cause fatal injury
to operator or unrecoverable damage to the inverter. Only qualified
personnel can perform the wiring work.
2. Please don't connect PV array positive or negative pole to the
ground, it could cause serious damages to the inverter.
3. Check the connection cables of the PV modules for correct polarity
and make sure that the maximum input voltage of the inverter is not
exceeded.
4. Grounding the PV modules：The SPH is a transformer less inverter.
That is why it has no galvanic separation. Do not ground the DC
circuits of the PV modules connected to the SPH. Only ground the
mounting frame of the PV modules. If you connect grounded PV
modules to the SPH, the error message "PV ISO Low".
5.Comply with the local requirements for grounding the PV modules
and the PV generator. GROWATT recommends connecting the
generator frame and other electrically conductive surfaces in a manner
which ensures continuous conduction with ground in order to have
optimal protection of the system and personnel.
6. Please disconnect the PV DC switch when maintaining the inverter.
CAUTION
Connection of PV terminal
Chart 5.9
19
20
The Inverter Side
PV-
PV+
Similar to the traditional inverter connecting, the input of PV panel energy can be
realized by using MC4 PV terminal, the detail steps are as follows:
1.Turn off PV switch.
2.Insert PV panel positive and negative cables into MC4 terminal, then connect positive
pole(+) of connection cable to positive pole(+) of PV input connector, connect negative
pole(-) of connection cable to negative pole(-)of PV input connector, please pay attention
to PV input voltage and current within permission Limit:
Max PV voltage: 550V (consider the lowest temperature)
Max PV input current: 13.5A
Max PV input power per string: 5300W
Remark:
2
1.We suggest you use the cable≥4mm /12 AWG to connect.
2.Please do not connect to DC source!
5.4.3 Connection of AC terminal and off grid terminal
SPH has a grid output terminal and off grid out terminal, look down on the SPH from the
front, the terminal on the left (on grid) is grid outlet for connecting grid, the terminal on
the right is an emergency power outlet for connecting critical load.
Chart 5.10 SPH 3000-6000TL BL-UP
Wire suggest length
The AC wiring step:
Step 1. Uninstall the parts of the AC connection plug from the accessory bag.
OFF
Grid ON
Grid
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