Growatt SPH 4000-10000TL3 BH-UP handleiding

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6.4.3.1 Three-phase system with balanced loads

Figure 6.11 shows the three-phase system with balanced loads. The inverter side can

provide enough power to the load (power provided by the inverter is not less than

2+2+2=6 kW), and the total inverter output power is equal to the sum of the total load

power and the preconfigured exported power (2+2+2+1=7 kW). At this time, the three-

phase output on the inverter side is balanced; the three-phase power on the grid side is

not necessarily balanced and it is only allowed to feed power to the grid.

Figure 6.11

Figure 6.12 shows the three-phase system with balanced loads. The inverter side can

provide enough power to the load (power provided by the inverter is not less than

2.5+2.5+2.5=7.5 kW). The total inverter output power is not greater than the sum of the

total load power and the preconfigured exported (2.5+2.5+2.5+1=8.5 kW). At this time,

the three-phase output on the inverter side is balanced; the three-phase power on the

grid side is not necessarily balanced, and it is only allowed to feed power to the grid.

Figure 6.12

2kW

3kW

2kW

0kW

2kW

7kW

-1kW

2kW

0kW

-1kW

2.5kW

3.3kW

2.6kW

0kW

2.5kW

8.4kW

-0.9kW

2.5kW

-0.1kW

-0.8kW

Figure 6.13 shows the three-phase system with balanced loads. The inverter side cannot

provide enough power to the load (the power provided by the inverter side is less than

2+2+2 = 6 kW), the total inverter output power is not greater than the sum of the total

load power and the preconfigured exported power (2+2+2+1=7 kW). At this time, the

three-phase output on the inverter side is balanced; the three-phase power on the grid

side is balanced and it is only allowed to draw power from the grid.

Figure 6.13

Figure 6.14

6.4.3.2 Three-phase system with unbalanced loads

Figure 6.14 shows the three-phase system with unbalanced loads. The inverter side can

provide enough power to the load. The power provided by the inverter side is not less than

1+2+3=6 kW), and each phase can provide enough power to the load (the load power per

phase is not more than 3.3 kW). The total inverter output power is not greater than the

sum of the total load power and the preconfigured exported power value (1+2+3+1= 7

kW). At this time, the three-phase output on the inverter side is unbalanced; the three-

phase power on the grid side is unbalanced, and it is only allowed to feed power to the

grid.

1kW

2kW

1.9kW

2kW

0kW

3kW

6.9kW

-0.9kW

3kW

0kW

-0.9kW

2kW

1.5kW

0.5kW

1.5kW

4.5kW

1.5kW

2kW

0.5kW

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