Three Units Connected To The Same Transformer Winding - Ingeteam INGECON SUN PowerMax TL U B 1000 Vdc Series Installation And Operation Manual

Ingeteam

10.2.2. Three units connected to the same transformer winding

When connecting three units to the same transformer winding, the grounding of the system must be unique and
shared, as otherwise there could be currents flowing through the different ground connections.
Each inverter will be equipped with the following elements to carry out the configuration:
• One independent input with 1500 V fuse to connect the grounded fuses.
• One CAN communication cable for connecting the communications of the inverters.
Once the units have been installed, the following connections are performed:
1. Connect the grounded pole of the three units through 35 mm
insulation. This connection can be done through the cable grommets provided in the bases of the units in
question.
Inverter 1
78
-INV1 (-TSGND)
-Rfin
-X26
1A 2A 3A 4A
1B 2B 3B 4B
1C 2C 3C 4C
1D 2D 3D 4D
-INV1 (-TSGND)
-Rfin
-X26
1A 2A 3A 4A
1B 2B 3B 4B
1C 2C 3C 4C
Connection of the PV array grounding kit [optional]
-INV2
-X26
1A
1B
1C
1D
-Rfout
-INV2
White
Brown
-X26
1B
1C
1D
-Rfout
-CAN_1
section cables with 1000/1500 V
2
Inverter 2
ABK2027IQE01_A - Installation and Operation Manual
2A 3A 4A
2B 3B 4B
2C 3C 4C
2D 3D 4D
Yellow
Green
2B 3B 4B
2C 3C 4C
2D 3D 4D
Inverter 3