SolaX Power X1-Hybrid/Fit G4 User manual

ENGLISH
V1.0
Figure 1
Meter/CT Self-Check

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Background
Meter and CT is the Measuring device installed at the GCP (Grid Connection Point) of the
inverter system for detecting GCP data. For energy storage system, the functions such as
Battery Charge and Discharge, Working Mode, Export Control and Three-phase Unbalanced,
can only be achieved when the Measurement device is installed correctly.
The Meter/CT Self-Check function can identify whether there has problems with the Meter
and CT installation through the feedback of the power changes. After the installation is
completed, you just need to use this function, then you can troubleshoot the problems on
site.
What problems can be troubleshooted with Meter/CT Self-Check
Function?
Some problems can be corrected automatically, and others need to be manually adjusted by
the installer based on the error code displayed after the checking is completed.
(1) For the following Installation problems, the inverter will adjust the correspondence with
Measurement Device to Automatically Correct them:
①‘CT’ direction is reversed
②‘CT’ three phases correspondence is not correct
Note: Meter’s three phases correspondence problem can also be Automatically Corrected.
(2) These installation problems need to be Manually Corrected by the installer according to

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the error code prompt: (Error codes refer to Table 1)
①'CT' has not been successfully clipped on the phase wire
②'CT' is wrongly connected to the loads side
③'CT' is wrongly connected between the loads and the inverter
④The CT is connected to the N wire
⑤Two CTs are connected to the same phase.

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⑥The CT is connected to 2 wires
⑦The direction of ‘Meter-CT’ is reversed
Note: Meter’s direction reverse problem also need to be Manually Corrected according to
the error code prompt.
⑧‘Meter-CT’three phases correspondence is not correct
Note: If there has communication problem with Meter and Meter-CT, the ‘Meter fault’ will
be reported.
How to Use the Meter and CT Self-Check Function?
After the installation is completed, the installer can enable the ’Installation Check’ on the
LCD screen or the SolaX Cloud, the inverter will detect whether the Meter and CT has been
installed correctly. The inverter will automatically correct it or display the corresponding

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error code if there has problem.
The Table 1 describes the meaning of error codes.
Tab.1 The Error Codes and Corresponding Meaning
Error Codes
Meaning
Fail 00
Phase A has no CT clipped on it.
Fail 01
Phase A has 2 CTs clipped on it, or there is CT clipped on the N wire.
Fail 02
CT1 is clipped to Phase A and Phase B.
Fail 03
CT2 is clipped to Phase A and Phase B.
Fail 04
CT3 is clipped to Phase A and Phase B.
Fail 05
Phase B has no CT clipped on it.
Fail 06
Phase B has 2 CTs clipped on it, or there is CT clipped on the N wire.
Fail 07
CT1 is clipped to Phase A and Phase C.
Fail 08
CT2 is clipped to Phase A, CT1 is clipped on Phase B and Phase C.
Fail 09
CT3 is clipped to Phase A, CT1 is clipped on Phase B and Phase C
Fail 10
CT2 is clipped to Phase A and Phase C.
Fail 11
CT1 is clipped to Phase A, CT2 is clipped on Phase B and Phase C
Fail 12
CT3 is clipped to Phase A, CT2 is clipped on Phase B and Phase C
Fail 13
CT3 is clipped to Phase A and Phase C.
Fail 14
CT1 is clipped to Phase A, CT3 is clipped on Phase B and Phase C
Fail 15
CT2 is clipped to Phase A, CT3 is clipped on Phase B and Phase C
Fail 16
Phase C has no CT clipped on it.
Fail 17
Phase C has 2 CTs clipped on it, or there is CT clipped on the N wire.
Fail 18
No reactive power was detected on phase A after adjusting the CT
sequence.
Fail 19
No reactive power was detected on phase B after adjusting the CT
sequence.
Fail 20
No reactive power was detected on phase C after adjusting the CT
sequence.
Fail 21
Meter phase A direction is reversed.
Fail 22
Meter phase B direction is reversed.
Fail 23
Meter phase C direction is reversed.
Note: The error message is only a reminder and does not necessarily correspond to the
actual installation problem. If the problem is not found after the error is reported, please
contact SolaX service.
Setting Path
Advanced->Meter/CT Setting->Meter/CT Check->Installation Check
Error Display
①Solax Cloud：
The ‘Alarm’ page on the SolaX Cloud will show the “CT/Meter Check Fault” if there was

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Meter and CT installation problems. The detailed error code is shown on the Installation
Check page on the LCD screen.
②LCD Screen
On the Installation Check page, the ‘CT Status’ shows the current checking status. There are
4 statuses: Disable / Checking / Success / Fail xx, as shown in the figure.
(Disable: Installation Checking is not enabled; Checking: Checking in progress; Success:
Checking passed; Failed xx: Meter and CT has installation problem required manual
adjustment)
The Meter/CT Self-Check function of X1-Hybrid/Fit G4
The Meter/CT Self-Check function of X1-Hybrid/Fit G4 has 2 differences from three-phase
system in the following ways:
Ⅰ. X1-Hybrid/Fit G4 only check CT and does not check meter;
Ⅱ. Since X1-Hybrid/Fit G4 is single-phase inverter, there is no phase sequence
corresponding issue.
Here are the installation problems check of the single-phase system.
(1) Automatically Correct

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If ‘CT direction reversed’ is detected, the inverter will Automatically correct the CT
direction.
(2) These problems will report ‘miss CT fault’ and need to be Manually Corrected by the
installer.
①CT has not been successfully clipped on the phase wire
②CT is wrongly connected to the N wire
③CT is connected to two wires
④CT is wrongly connected to the loads side

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⑤CT is wrongly connected between the loads and the inverter
Configuration
Compatible Inverter Model：
X1-Hybrid/Fit G4
X3-Hybrid/Fit G4
Firmware Version：
X1-Hybrid/Fit G4：
ARM≥1.34 DSP≥1.35
X3-Hybrid/Fit G4：
ARM≥1.28 DSP≥1.30
Note: Both Inverter Parallel System and AC Coupling (with third-party string inverters)
System all support Meter/CT Self-Check function.