Introduction

The Nominal AC output power of X3-Hybrid G4 is restricted to 5.0-15kW, therefore, it can’t be applied to the scenarios where users require more power. Considering this, SolaX provide a solution -- X3-Hybrid parallel solution, which makes it to multiply the power range. In this solution, there are 2 methods to transfer between On-grid & Off-grid status:

1. External ATS through EPS Parallel Box (Up to 10 inverters parallel, but switching time is longer)
2. Internal transfer (Up to 3 inverters parallel, switching is swift)

Notes: Before operation, please make sure that the inverter meets the following four conditions.

1. The software version of all inverters shall be the same;
2. The power range of all inverter models shall be the same;
3. The type and quantity of batteries connected to all inverters shall be the same, or this function cannot be used.
4. X3 Matebox-advanced is not compatible to parallel solution.

Advantages

Robust backup capacity

More energy stored will make user deal with Off-grid situation more leisurely.

Flexible

Greater power range can meet more requirements, and be applied to more scenarios.

Configuration

Cable Connection

It is strongly required that every cable must be connected according to correct line sequence (R-R, S-S, T-T, N-N), otherwise any small misoperation may cause the system running failed. Incorrect line sequence will damage the inverter. To avoid the damage, the default “Disable” has been set to “Enable” in “External ATS” under "Advance Settings".

1.External ATS through EPS Parallel Box

Please connect the cables strictly according to Diagram 1 below.

Up to 10 inverters/150kW can be connected with X3-EPS PBOX-150kW-G2, up to 6 inverters/60kW can be connected with X3-EPS PBOX-60kW-G2.

2. Internal Transfer

Please connect the cables strictly according to Diagram5 below.

Up to 3 inverters can be connected in this solution.

Communication Wiring

PIN Definition (CAN1)

PIN Definition (CAN2)

PIN Definition (Meter/CT)

Use standard network cables (prepared by users themselves) for CAN-CAN connection and insert one end of the cable into CAN1 of the master inverter and the other end into the COM port of X3-PBOX-G2.

As for X3-EPS-P5-I/E and X3-EPS-P10-I/E, please connect VCC/GND pins of the master inverter and +13V/GND pins of the parallel box.

Insert one end of network cable into the first inverter’s CAN2 port and the other end into the next inverter’s CAN1 port, other inverters are connected in same way.

Insert one end of network cable into the meter, and the other end into the meter port the master inverter.

It’s noted that, keep all inverters off before operation.

1. External ATS through EPS Parallel Box, shown as below.

2. Internal Transfer without EPS Parallel Box, shown as below.

Setting & Commission

Parallel Setting

Setting path: (Status setting)

Main → Settings → Advance Setting → Parallel Setting → Status setting

There are 2 settings chosen:

Free

Master

Select Master on the master inverter (the inverter connected to the meter/CT directly), and other inverters will be slave inverters automatically.

Setting path: (resistance switch)

Main → Settings → Advance Setting → Parallel Setting → resistance switch

There are 2 settings chosen:

OFF

ON

Select ON on the master inverter and the last slave inverter.

Meter/CT Setting

Setting path:

Main → Settings → Advance Setting → Meter/CT Settings

As for Internal Transfer solution, 200A CT (309301004800) is optional.

Please select 200 under Meter/CT Setting → CT Type.

As for External ATS solution with more inverters, a meter with CT is recommended.

Compatibility

Hardware version:

X3-Hybrid/Fit G4.1 X3-Hybrid/Fit G4.2

X3-Hybrid/Fit G4.3

Software version:

ARM≥V1.18 DSP≥V1.19