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Parallel System

• Set System Type: The EG4 18KPV supports paralleling of multiple inverters. You would need

to connect the LOAD terminals together for paralleling. In this scenario we need to set one of

the inverters to Master and the others to Slave. If you install all inverters as single-phase, be

sure to set one of the inverters to “1 Phase Master”. If you want to compose a three-phase

system, set one of the inverters to “3 Phase Master”. All inverters are set to Slaves by default,

so when you get the inverters, you will need to set one inverter to Master when paralleling

multiple inverters.

• Set Composed Phase: When you use ≥ 3 inverters to compose a three-phase system, you

must connect the AC terminals of the inverter to a three-phase grid (Used when composing a

three-phase system). If the system is connected to the grid, the inverter will detect the phase

it connects to automatically, record it and output the phase as it detected. If the user setting is

different from the phase the inverter detected, it will output the phase detected. The output

phase record will be cleared if customer clears it. If the system is not connected to the grid,

the inverter will use the user output phase setting to compose the three-phase output. If the

customer sets the wrong phase, i.e., 2 U phase and no W phase, the system will report error.

• Share Battery: For paralleled systems: if all inverters connect to same battery bank, you must

enable Share Battery. The Master inverter will broadcast the battery information to all other

inverters.

7.3

Grid Connect Settings

• Grid Regulation: Select the correct Grid safety regulation.

• Grid Frequency: If the Grid Frequency is nominal at 50Hz, then the inverter’s Frequency will

be adjusted to 50Hz automatically. If there is no grid power and it is read as 50Hz but the de-

vices are 60Hz; then you can set to 60Hz manually. This is based on the rated frequency of the

local grid regulation and devices.

• Grid Type: Select the correct Grid type to function, such as split phase: 240/120 or 208/120V.

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