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Solutions for Special Grid Types

The world’s most common grid type is 230V/400V with neutral at 50Hz/60Hz, it’s the main grid type in Europe, Asia, Oceania, and most of South America. But there are also special grid types in other areas, such as split-phase grid, low voltage delta grid, let’s learn about Growatt solutions for the special grid types with normal inverter

Split-phase Grid

In the US, Canada, Japan, Taiwan, North America, and some part of South America, the grid type is split-phase, with 2 lines and neutral, the voltage between L1 and L2 around 220-240V.

When using a Growatt single phase inverter in the split-phase grid, the wiring should be as below picture, connect inverter’s L and N to the grid L1 and L2.

If the system needs the export limitation function, a three-phase meter is necessary, the wiring should be as below:

Note:

1.This solution is only suitable for single-phase on-grid inverters and singlephase hybrid inverters. 2.When a single-phase hybrid inverter is used in the split-phase system, it can only work as an on-grid hybrid inverter, the backup function is unavailable.

Three-phase Delta Grid

In North America, part of South America, Norway, and part of Belgium, the grid is the delta grid, the voltage is around 220-230V.

When need an inverter on the low voltage delta grid, there are 2 solutions: single phase inverter or special model three-phase inverter.

When using a Growatt single phase inverter on a 230V delta grid, the connection should as below picture, connect the inverter’s L and N to the grid L1 and L2.

If the export limitation function is needed, a Growatt three-phase meter is necessary, the wiring diagram should be as below:

Note:

1This solution is only suitable for single-phase on-grid inverters and singlephase hybrid inverters.

2.When a single-phase hybrid inverter is used in the split-phase system, it can only work as an on-grid hybrid inverter, the backup function is unavailable.

When using a special three-phase inverter on the 230V delta grid, the special inverter models with XL suffix is needed, like MID 6-12KTL3-XL, MID 15-20KTL3-XL, MAC 10-36KTL3-XL, and MAX 25-50KTL3-XL, their AC output are special designed for the 230V delta grid.

If need export limitation, the wiring diagram is displayed below with a Growatt three-phase meter.

Note:

Only special models support the 230V delta grid, please check with Growatt technical engineer for details.

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