SolaX Power X1-Hybrid-LV User manual

www.solaxpower.com
X1-Hybrid-LV
User Manual
X1-Hybrid-3.0-LV / X1-Hybrid-3.7-LV / X1-Hybrid-4.0-LV
X1-Hybrid-4.6-LV / X1-Hybrid-5.0-LV / X1-Hybrid-6.0-LV
eManual in the QR code or at
https://kb.solaxpower.com/
Download.html

Change History
Changes between document versions are cumulative. The latest version
contains all updates made in previous versions.
Version 01 (October.18, 2023)
Updated the content in the parallel connection diagram: up to 10 inverters can
be connected in a system.
Version 00 (September.27, 2023)
Initial release

01
Table of Contents
1 Note on this Manual
3 Introduction 11
4 Technical Data 23
5 Installation 26
1.1 Scope of Validity 03
3.1 Basic Features 11
4.1 DC Input 23
5.1 Check For Transport Damage 26
5.2 Packing List 26
5.3 Installation Precautions 28
5.4 Tool Preparation 29
5.5 Installation Site Conditions 31
5.5.1 Installation Carrier Requirements 31
5.5.2 Installation Requirements 31
5.5.3 Installation Space Requirements 32
5.6 Mounting 33
3.2 System Diagram 13
4.2 AC Input & Output 23
3.3 Work Mode 16
4.3 EPS Output 24
3.4 Dimensions 20
4.4 Battery Data 24
3.5 Terminals of Inverter 21
4.6 Protection Device 24
4.5 System Data 24
1.2 Target Group 03
1.3 Symbols Used 03
2 Safety 04
2.1 Important Safety Instructions 04
2.2 Explanation Symbols 09
2.3 CE Direvtions 10
4.8 General Data 25
4.7 Power Consumption & Environment Limit 25
5.4.1 Installation Tools 29
5.4.2 Additionally Required Materials 30

02
7 Firmware Upgrade 69
9 Troubleshooting 79
10 Decommissioning 86
11 Disclaimer 87
6.2 Grid Port and EPS Output Connection 39
6.3 Battery Connection 45
6.8 Inverter Operation 67
8.3 LCD Operation 73
9.2 Routine Maintenance 85
10.4 Waste Disposal 86
6.4 Communication Connection 50
6.4.1 CT/Meter Port Communication 51
6.4.3 Parallel Connection 60
6.5 Grounding Connection (Mandatory) 63
6.6 Monitoring Connection(Accessories) 64
6.7 Check All Below Steps Before Starting Inverter 66
8 Setting 71
8.1 Control Panel 71
9.1 Troubleshooting 79
10.1 Dismantling the Inverter 86
10.2 Packaging 86
10.3 Storage and Transportation 86
8.2 Screen Menu Structure 72
6 Electrical Connections 35
6.1 PV Connection 35
6.4.2 BMS/DR/COM Port Connection 56
6.3.1 Battery Connection Requirements 45
6.3.2 Battery temperature sensor Connection 49
6.4.4 Dry-contact output connection 61

Note on this Manual
03
1 Note on this Manual
1.1 Scope of Validity
1.2 Target Group
1.3 Symbols Used
This manual, an integral part of X1-Hybrid-LV, provides information on the
proper installation, commissioning, maintenance and troubleshooting for the
inverter. Follow these instructions to help ensure that the inverter performs
properly. Failure to follow these instructions can signicantly a󰀨ect the invert-
er’s performance and reliability, and may adversely a󰀨ect the equipment war-
ranty. Please read it carefully.
This manual is for qualied electricians. The tasks described in this manual
only can be performed by qualied electricians.
The following types of safety instructions and general information appear in
this document as described below:
Note: "X1-Hybrid-LV" Series, an energy storage inverter, supports photovolta-
ic grid-connected.
“3.0” indicates 3.0 kW, as well as 3.7, 4.0, 4.6, 5.0 and 6.0.
“LV” indicates low voltage.
Please keep the user manual properly.
Danger!
"Danger" refers to a dangerous situation that, if not avoided, will
result in a high level of risk such as serious injury or even death.
Warning!
"Warning" indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Caution!
"Caution" indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Note!
"Note" provides tips that are valuable for the optimal operation
of our product.
X1-Hybrid-3.0-LV X1-Hybrid-3.7-LV X1-Hybrid-4.0-LV
X1-Hybrid-4.6-LV X1-Hybrid-5.0-LV X1-Hybrid-6.0-LV

Safety
04
Danger!
Danger to life due to high voltages in the inverter!
The personnel responsible for the installation, electrical con-
nection, debugging, maintenance and fault handling operation
of this product need to be trained, master the correct operation
method, have the corresponding electrician qualification and
safety operation knowledge.
Attention!
Ground PV system.
Perform PV modules and photovoltaic system grounding in ac-
cordance with local requirements to achieve optimal protection
of systems and personnel.
Caution!
Radiation may be harmful to health!
Do not stay for a long time and keep at least 20 cm away from
the inverter.
Caution!
When the inverter is working, it is strictly forbidden to touch the
shell. The temperature of the shell can be high and there is a
risk of scalding.
Warning!
Authorized service personnel must disconnect the AC and DC
power supply of the inverter before performing any mainte-
nance, cleaning or operation of any circuit connected to the
inverter.
Warning!
Ensure that the input DC voltage is below the inverter limit.
Excessive DC voltage and current may cause permanent dam-
age or other losses to the inverter, which is not covered by the
warranty.
2 Safety
2.1 Important Safety Instructions

Safety
05
Danger!
The inverter can not be operated when it is running.
Warning!
Risk of electric shock!
Strictly follow relevant safety specications for product installation and testing.
During installation, operation or maintenance, read carefully and follow the in-
structions and precautions on the inverter and user manual. If the operation is
incorrect, it may cause personal and property losses. Keep the user manual
properly after use.
This inverter can only use the accessories sold and recommended by us, oth-
erwise it may cause re, electric shock or casualties.
Without the authorization of our company, you may not open the inverter cov-
er or replace the inverter parts, otherwise the warranty promise of the inverter
will be invalid.
The use and operation of the inverter must be carried out in accordance with
the instructions in this manual, otherwise this protection will fail and the war-
ranty of the inverter will also fail.
During working, the inverter surface temperature may exceed 60°C, make
sure the inverter cools down before touching, and make sure children can not
touch.
When exposed to sunlight, photovoltaic arrays generate dangerous high DC
voltages. Follow our instructions, otherwise it will be life-threatening.
All DC and AC power sources must be disconnected from the inverter for at
least 5 minutes before any wiring or electrical operation is performed on the
inverter to ensure complete isolation of the inverter and avoid electric shock.
A photovoltaic module used on the inverter must have a IEC61730A rating,
and the total open circuit voltage of the photovoltaic string / array is lower
than the maximum rated DC input voltage of the inverter. Any damage caused

Safety
06
■Surge protection devices (SPDs) for PV installation
Direct or indirect lightning strikes can cause failures. Surge is the main cause
of lightning damage to most devices. Surge voltage may occur at photovoltaic
input or AC output, especially in remote mountain areas where long distance
cable is supplied.
Consult professionals before installing SPDs.
The external lightning protection device can reduce the influence of direct
lightning strike, and the lightning protection device can release surge current
to the earth.
If the building installed with external light protection device is faraway from the
inverter location, in order to protect the inverter from electrical and mechan-
ical damage, the inverter should also install an external lightning protection
equipment.
In order to protect DC system, two-stage surge protection equipment is need-
ed between DC cable of inverter and photovoltaic equipment module.
Warning!
Over-voltage protection with surge arresters should be provided
when the PV power system is installed.
The grid connected inverter is tted with SPDs in both PV input
side and MAINS side.
by photovoltaic over voltage is not covered by warranty.
Installation position should be away from wet environment and corrosive sub-
stances.
After the inverter and power grid cut o󰀨 the PV power supply, there will be a
certain amount of residual current in a short time, be cautious or it may lead
to serious personal injury and even high risk of death. Use a multimeter (im-
pedance at least 1 MΩ) to measure the voltage between the UDC and the
UDC- to ensure that the inverter port is discharged below the safe voltage
before starting operation (35 VDC).

Safety
07
The islanding e󰀨ect means that when the power grid is cut o󰀨, the grid-con-
nected power generation system fails to detect the power outage and still
supplies power to the power grid. This is very dangerous for the maintenance
personnel and the power grid on the transmission line.
This inverter use active frequency o󰀨set method to prevent islanding e󰀨ect.
■Anti-islanding E󰀨ect
In order to protect the AC system, the level 2 surge protection equipment
should be installed at the AC output, located between the inverter and the
grid. Installation requirements must comply with IEC61643-21 standard.
All DC cables shall be installed in a distance as short as possible, and the
positive and negative cables of the same input need to be bundled together to
avoid causing loops in the system. Minimum distance installation and binding
requirements also apply to auxiliary grounding and shielding grounding con-
ductors.
■PE Connection and Leakage Current
• All inverter incorporate a certied internal Residual Current Device (RCM)
in order to protect against possible electrocution and re hazard in case of a
malfunction in the PV array, cables or inverter. There are 2 trip thresholds for
the RCM as required for certication (IEC 62109-2:2011).
• The default value for electrocution protection is 30mA, and for slow rising
current is 300mA.
• The inverter, with built-in RCM, will exclude possibility of DC residual cur-
rent up to 6mA.
• Check which type of RCD is required for the relevant grid code in your re-
gion. We strongly recommends to use an RCD Type B on the line connecting
to the house loads.
• A faulty ground connection can result in equipment failure, personal and
death injuries, and electromagnetic interference.
• Ensure correct grounding according to IEC62109 and conductor diameter
Warning!
High leakage current!
Earth connection essential before connecting supply.

Safety
08
■Battery Safety Instructions
This inverter should pair with high voltage battery, for the specic parameters
such as battery type, nominal voltage and nominal capacity etc., please refer
to 4.4 Battery Data.
Refer to the matching battery specication for details.
according to STANDARD specication.
• Do not connect the grounding end of the equipment in series to prevent
multi-point grounding.
• Electrical appliances must be installed in accordance with the wiring rules
of each country.
For United Kingdom
• The installation that connects the equipment to the supply terminals shall
comply with the requirements of BS 7671.
• Electrical installation of PV system shall comply with requirements of BS
7671 and IEC 60364-7-712.
• All protective devices cannot be changed.
• User shall ensure that equipment is so installed, designed and operated to
maintain at all times compliance with the requirements of ESQCR22(1)(a).

Safety
09
2.2 Explanation of Symbols
This section gives an explanation of all the symbols shown on the inverter
and on the type label.
■Symbols on the Inverter
■Symbols on the Type Label
Symbols Explanation
Operating Display
Battery status
An error has occurred, inform your installer immediately.
Symbols Explanation
CE mark.
The inverter complies with the requirements of the applica-
ble CE guidelines.
UKCA mark.
The inverter complies with the requirements of the applica-
ble UKCA guidelines.
Observe enclosed documentation.
TUV certied.
RCM remark
Beware of hot surface.
The inverter can become hot during operation. Avoid con-
tact during operation.
Danger of high voltages.
Danger to life due to high voltages in the inverter!
Danger.
Risk of electric shock!
The inverter can not be disposed together with the house-
hold waste. Disposal information can be found in the en-
closed documentation.
Do not operate this inverter until it is isolated from battery,
mains and on-site PV generation suppliers.
Danger to life due to high voltage.
There is residual voltage existing in the inverter after power-
ing o󰀨, which needs 5 min to discharge.
Wait 5 min before you open the upper lid or the DC lid.

Safety
10
2.3 CE Directives
This section describes the requirements of the European low voltage regula-
tions, including safety instructions and system licensing conditions, the user
must comply with these regulations when installing, operating, and maintain-
ing the inverter, otherwise personal injury or death may occur, and the inverter
will be damaged.
Please read the manual carefully when operating the inverter .If you do not
understand "Danger", "Warning", "Caution" and the description in the manual,
please contact the manufacturer or service agent before installing and operat-
ing the inverter.
Make sure that the whole system complies with the requirements of
EC(2014/35/EU, 2014/30/EU, etc.) before starting the module (i.e. to start the
operation).
Standard of 2014/35/EU (LVD)
EN IEC 62109-1; EN IEC 62109-2
EN 62477-1
Standard of 2014/30/EU (EMC)
EN IEC 61000-6-1; EN IEC 61000-6-2;
EN IEC 61000-6-3; EN IEC 61000-6-4;
EN IEC 61000-3-2; EN 61000-3-3;
EN IEC 61000-3-11; EN 61000-3-12
EN 55011
The assembly shall be installed in accordance with the statutory wiring rules.
Install and congure the system in accordance with safety rules, including the
use of specied wiring methods. The installation of the system can only be
done by professional assemblers who are familiar with safety requirements
and EMC. The assembler shall ensure that the system complies with the rel-
evant national laws. The individual subassembly of the system shall be inter-
connected by means of the wiring methods outlined in national/international
such as the national electric code (NFPA) No. 70 or VDE regulation 4105.

Introduction
11
3 Introduction
3.1 Basic Features
The series inverter is a high-quality inverter which combines solar inverter,
solar charger, AC charger and emergency power supply (EPS) function to-
gether with IP65 degree of protection. The inverter can be used to optimize
self-consumption, stored in batteries for future use or fed into the public grid.
The way it works depends on user preferences.
The series of inverters are designed to have two EPS wiring schemes.
Customers can choose between EPS compatible parts for loads and EPS
compatibility for all load uses. There are di󰀨erent wiring methods in di󰀨erent
countries. One method is to connect the N line with the PE line, while the oth-
er method is to separate the line wiring from the PE line. Please refer to the
diagram below:
3.2 System Diagram
Diagram A: Neutral line and PE line are separated from each other, and the
emergency load is connected to the EPS port; (For most countries)
BAT
Battery
PV Module
Normal LoadsEPS Loads
Diesel Generator
DC Breaker
AC Breaker
AC Breaker AC Breaker
PV1
PV2
GEN
BMS CT
Grid
GRID
L
N
PE
E-BAR
LNL N PE LNPE
EPS
CT
RCD
RCD
Inverter

Introduction
12
Diagram B: Neutral line and PE line are combined together, and the emergency
load is connected to the EPS port. (For Australia)
BAT
Inverter
Battery
PV Module
Normal Loads
EPS Loads
Diesel Generator
DC Breaker
AC Breaker
AC Breaker AC Breaker
PV1
PV2
GEN
BMS CT
Grid
GRID
L
N
E-BAR
L N L N PE L
N
PE
EPS
CT
RCD RCD N-BAR
Notice!
When power cuts suddenly, the inverter connects the N line of
EPS load with the ground through relay, providing a xed zero
potential for EPS load and ensuring the safety of electricity use
by users.
Ensure that the EPS load rated power is within the EPS rated
output power range, otherwise, the inverter will report an over-
load warning.
Please conrm with the grid operator whether there are special
regulations for grid connection.

Introduction
13
3.3 Work Mode
■Self consumption mode
There are a six work modes of the inverter based on di󰀨erent needs. Please
note that SUB mode, SBU mode and MKS mode can only work under Paki-
stani Safety.
Self con-
sumption
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for the time when the electricity price is high and the
internet is not allowed. This mode requires the installation of an electric
meter.
1. The battery is in a state of real-time charging and discharging. The charg-
ing and discharging power of battery depends on PV power, load power and
rated power of inverter. The goal is to always try to control the power of the
electric meter to 0, that is, to make the output power of the inverter equal to
the load power (or to control it to the set minimum power to take electricity
from the power grid).
2. Electricity meter data is needed in this state. Zero-export is forced to be
enabled, and it is not allowed to feed power into the power grid;
3. In this state, it is necessary to set the battery reserve SOC (if the battery
is set to this SOC, it will stop discharging, and this SOC value can be set).
4. If the battery power is lower than the minimum SOC value (which can be
set), the battery is forced to be charged to the reserved SOC.
Notes:
PV power is superior to power supply to the load, and the battery can be
charged and discharged, but it can only be charged from PV.
1. When load power > inverter rated power:
The PV power < inverter rated power, and the battery discharge power
value = PV power-inverter rated power;
*PV power > inverter rated power, battery charging power value = PV pow-
er-inverter rated power;
2. When the load power is less than the inverter rated power:
*PV power < load power, battery discharge power value = PV power-load
power;
*PV power > load power, battery charging power value = PV power-load
power;
* This state of zero-expor is forced to be enabled. When the PV power
> [battery charging power value+load power] the remaining power is not
allowed to be fed into the power grid, and PV limits the power so that PV
power = [battery charging power value+load power].

Introduction
14
■Surplus feed in tari󰀨 mode
Surplus
feed in
tari󰀨
mode
The charging and discharging strategy of EMS battery:
This model is suitable for the application scenarios where the electricity
price is high, the surplus electricity is allowed to access the Internet, and
there is less subsidy for accessing the Internet. The residual electricity here
refers to the amount of electricity that PV needs to charge the battery and
load. This mode requires the installation of an electric meter.
1. The only di󰀨erence between this mode and Self consumption mode is
that when PV power > battery charging power+load power, PV does not
limit power, but feeds surplus power into the power grid;
2. In this state, electricity meter data is needed, and zero-export is invalid,
allowing power to be fed into the power grid (the percentage can be set).
3. In this state, the battery reserve SOC needs to be set. When the battery
reaches this SOC level, it will stop discharging. This SOC value can be set.
4. If the battery power is lower than the minimum SOC value (which can be
set), the battery is forced to be charged to the reserved SOC.
Notes:
- Same as Self consumption mode.
- When the PV power > [battery charging power value+load power], the
remaining power is fed into the power grid.
Full feed
in tari󰀨
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for application scenarios with high Internet subsidies.
Selecting this mode alone does not need to install an electric meter, but
the PV should be oversized and good illumination is needed, otherwise the
battery will not have a charging opportunity.
Notes:
* PV power > inverter rated power, battery charging power value = PV
power-inverter rated power;.* PV power < inverter rated power, battery
discharge power value = [PV power-inverter rated power].
■Full feed in tari󰀨 mode

Introduction
15
Priority
feed in
tari󰀨
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for the application scenarios with high electricity price
and internet subsidy. If this mode is selected, the PV should be oversized
and good lighting conditions are needed, otherwise the battery will have
less charging opportunities and be prone to power loss. This mode requires
the installation of an electric meter.
1. The PV power is preferentially fed to the grid. The battery can be charged
and discharged, but it can only be charged when the PV power is greater
than the rated power of the inverter.
2. When the PV power is less than the load power, the battery is discharged
to make the inverter output power equal to the load power.
3. Electricity meter data is required in this state, and zero-export enabling is
invalid.
4. In this state, the battery reserve SOC needs to be set. When the battery
reaches this SOC level, it will stop discharging. This SOC value can be set;
5. If the battery power is lower than the minimum SOC value (the preset
value), the battery is forced to be charged to the reserved SOC.
Notes:
* PV power < load power < inverter rated power, battery discharge power
value = [PV power-load power].
* PV power > load power < inverter rated power, battery charging and
discharging power value = 0.
* PV power < load power > inverter rated power, battery discharge power
value = [PV power-inverter rated power].
* PV power > load power > inverter rated power, battery charging power
value = PV power-inverter rated power.
■Priority feed in tari󰀨 mode

Introduction
16
■Peak Shaving Vally Filling mode (PSVF)
■Backup Mode
EPS
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for using PCS as UPS or EPS. Using this mode alone
does not require the installation of an electric meter. The battery is always
fully charged when there is a power grid, so as to supply power to VIP load
after the power grid fails.
1. In this state, whether there is PV or not, the battery is fully charged rst,
and the battery does not discharge;
2. In this state, when there is a power grid, the battery is always fully
charged, which is suitable for using the energy storage system as backup
power supply equipment when the power grid is cut o󰀨.
3. In this state, electricity meter data is needed, and zero-export is enabled
e󰀨ectively.
4. In this state, if the battery power is lower than the minimum SOC value
(which can be set), the battery is forced to be charged to the reserved SOC.
Notes:
The PV power is superior to charging the battery, and the battery is only
charged (PV and power grid have the same priority to charge the battery).
* Battery charging power = maximum allowable charging power. If the PV
power is less than the maximum allowable charging power of the battery,
the remaining power will charge the battery from the power grid;
* If the PV power is greater than the maximum allowable charging power of
the battery, supply power to the load; if zero-expor is not enabled, when the
PV power is greater than [battery charging power value+load power], the PV
surplus power is fed into the power grid. If zero-export is enabled, PV limit
power = maximum battery charging power+load power.
Peak
shaving
and valley
lling
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for the period when the electricity consumption of the
power grid is normal, the electricity price is normal and the online subsidy
is less. Choosing this mode alone does not need to install an electric meter,
but it needs to set a peak-o󰀨 period or a valley-lling period.
Notes:
* PV power > inverter rated power, battery charging power value = PV pow-
er-inverter rated power.
* PV power < inverter rated power, battery discharge power value = 0.