SOFAR 1.1K~3KTL User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
power grid using AC output power cables.
It is not allowed for several inverters to use the same circuit breaker.
It is not allowed to connect loads between inverter and circuit breaker.
AC breaker used as disconnect device,and the disconnect device shall
remain readily operable.
Context
All the AC output cables used for the inverters are outdoor three-core cables.
To facilitate the installation, use flexible cables. Table 4-2 lists the recommended
specifications for the cables.
Figure 4-9 NOT allowed: connect loads between inverter and circuit breaker
Table4-2 Recommended AC output cable specifications
Multi core copper wire
AC cable should be correctly sized to ensure the
power loss in AC cable is less than 1% of the rated
power. If the resistance of the AC cable is too high, it
will cause a huge increase in the AC voltage, which
may lead to a disconnection of the inverter from the
electrical grid. The relationship between power loss in AC cable and wire length,
wire cross sectional area is shown in the following figure：
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