Srne HES4855S100-H User manual

Solar Hybrid Inverter V1.0 1
Solar Hybrid Inverter
User Manual
Product Models
HES4855S100-H

Solar Hybrid Inverter V1.0 2
Important Safety Instructions
Please keep this Manual for future reference
This Manual contains all the safety, installation and operation instructions of HES series PV energy-storage hybrid
inverter.
Please read all instructions and precautions in this Manual carefully before installation and use.
The inverters have internal unsafe voltage, in order to avoid personal injury, users should not disassemble
them by themselves; if maintenance was required, should contact our professional maintenance personnel.
Keep the inverter out of the reach of children.
Do Not install the inverter in any flammable and explosive environment.
The mains input and AC output are high voltage, so please Do Not touch the wire connector.
When the inverter is working, the shell temperature will be very high, so please Do Not touch it.
Please Do Not open the terminal protective cover when the inverter is working.
It is recommended to install suitable fuse or circuit breaker outside the inverter.
Before installing and adjusting the wiring of the Inverter, be sure to disconnect the fuse or circuit breaker near
the PV array, the mains supply and the battery terminal.
Check whether all wire connections are tight after installation to avoid danger of heat accumulation caused
by virtual connection.
The Inverter is off-grid type, for the input power of load equipment, it is required to confirm that this Inverter
is the only input equipment and it is forbidden to use it in parallel with any other input AC power source so
as to avoid damage.

Solar Hybrid Inverter V1.0 3
CONTENTS
1. General information .........................................................................................................................4
1.1 Product overview and features....................................................................................................................................................4
1.2 Introduction to the Basic System................................................................................................................................................5
1.3 Product Features...............................................................................................................................................................................6
1.4 Dimensional Diagram......................................................................................................................................................................7
2. Installation Instructions...................................................................................................................8
2.1 Precautions for Installation ........................................................................................................................................................8
2.2 Wiring Specification and Circuit Breaker Selection ...........................................................................................................8
2.3 Installation and Wiring..............................................................................................................................................................10
3. Working mode................................................................................................................................ 16
3.1 Charging Mode............................................................................................................................................................................16
3.2 Output Mode................................................................................................................................................................................17
4. LCD Screen Operating Instructions............................................................................................. 18
4.1 Operation and Display Panel..................................................................................................................................................18
4.2 Introduction to Operation Keys.............................................................................................................................................18
4.3 Introduction to Indicator Light ..............................................................................................................................................18
4.4 Introduction to LCD Screen.....................................................................................................................................................19
4.5 Description of Setting Parameters........................................................................................................................................ 22
4.6 Battery Type Parameter List ....................................................................................................................................................27
5. Other Functions.............................................................................................................................. 29
5.1 Dry contact Function .................................................................................................................................................................29
5.2 RS485 Communication Function........................................................................................................................................... 29
5.3 USB Communication Function...............................................................................................................................................29
5.4 CAN Communication Interface..............................................................................................................................................29
6. Protection........................................................................................................................................ 30
6.1 Protection Functions Available ..............................................................................................................................................30
6.2 Meaning of Fault Code............................................................................................................................................................. 31
6.3 Partial Troubleshooting Measures ........................................................................................................................................32
7. System Maintenance ..................................................................................................................... 33
8. Technical Parameters .................................................................................................................... 34

Solar Hybrid Inverter V1.0 4
1. General information
1.1 Product overview and features
HES series is a new type of solar hybrid inverter, integrating solar energy storage and mains charging and AC
sine-wave output. It is controlled by DSP and has the features of high response speed, high reliability and high
industrial standard through state-of-art control algorithm. It has four charging modes: solar only, mains priority, solar
power priority and solar hybrid; two output modes of inverter and Mains Power can be selected to meet different
application requirements.
The solar charging module adopts the latest optimized MPPT technology, which can quickly track the MPP of PV
array in any environment, obtain the maximum energy of solar panel in real time, and has a wide MPPT voltage range.
AC-DC charging module adopts state-of-art control algorithm for full digital double closed-loop control of
voltage and current, which has high control precision and small size. Wide AC voltage input range, complete I/O
protection functions, stable and reliable realization of battery charging and protection.
The DC-AC inverter module is based on all-digital intelligent design, adopting state-of-art SPWM technology,
outputting pure sine wave, converting DC to AC, and thus suitable for AC loads such as household appliances, electric
tools, industrial equipment, electronic audio and video, etc. The product adopts sectional LCD display design, which
displays the running data and running status of the system in real time. The comprehensive electronic protection
function can ensure that the entire system be safer and more stable.
Characteristics:
1. Sectional charging and discharging function available, able to enable and disable AC charging function based on
the charging section time be set, switch power supply mode between inverter and AC bypass based on the
discharge section time be set.
2. Anti-counter-current grid-connected function (PV and mains hybrid power supply).
3. It has insulation impedance and leakage current detection function.
4. Support for use under battery-free conditions.
5. It has double activation function of lithium battery, which can be triggered by connecting any mains/PV power.
6. With the function of ECO mode and reducing no-load loss.
7. There are 4 charging modes available: solar only, Mains Power first, solar first and hybrid charging.
8. It has two output modes: Mains Power bypass and inverter output, and has the function of uninterrupted power
supply.
9. It has multiple protection functions for 360° omni-directional protection.
10. Support lead-acid battery and lithium battery access.
11. The ON/OFF switch controls the inverter AC output.
12. PV Grid-connected power generation mode can be set.
13. Adopt full digital voltage and current double closed-loop control, state-of-art SPWM technology and output
pure sine wave.
14. Advanced MPPT technology, the efficiency is as high as 99.9%.
15. LCD screen design, 3 LED indicator lights, dynamic display system data and running status.
16. Adopt intelligent adjustable speed fan to dissipate heat efficiently and prolong the service life of the system.
17. Complete short circuit protection, over-voltage and under-voltage protection, overload protection and backfeed
protection available.

Solar Hybrid Inverter V1.0 5
1.2 Introduction to the Basic System
The following figure shows the system application scenario of this Product. A complete system shall include the
following parts:
1. PV Module: convert light energy into direct current energy, charge the battery through inverter, or directly
invert into AC to supply power to the load.
2. Mains Power or Generator: connected at AC input, can supply power to the load and charge the battery at the
same time. If no mains or generator is connected, the system can operate normally and the load power is
supplied by batteries and PV module.
3. Battery: the function of battery is to ensure the normal power consumption of the system load when the solar
energy is insufficient and there is no Mains Power.
4. Load of Household Appliances: can access to various loads of household and office appliances, including AC
loads such as refrigerators, lamps, televisions, fans and air conditioners.
5. Reversing Control Inverter: energy conversion device of the whole system.
The specific system wiring mode is determined by the actual application scenario.
PV array
Generator
Utility
or
External Battery packs
Home Appliances

Solar Hybrid Inverter V1.0 6
1.3 Product Features

Indicator light
⑧
RS485-2 Communication Port
②
LCD screen
⑨
USB communication port
③
Touch button
⑩
RS485-1 Communication Port
④
PV terminal
⑪
Dry-contact port
⑤
Battery terminal
⑫
Overload protector
⑥
AC output
⑬
CAN communication port
⑦
AC input

Solar Hybrid Inverter V1.0 7
1.4 Dimensional Diagram
Location of Mounting Holes

Solar Hybrid Inverter V1.0 8
2. Installation Instructions
2.1 Precautions for Installation
Please read this Manual carefully to familiarize yourself with the installation steps before installing.
Take great care when installing the battery. Wear protective goggles when installing the lead-acid liquid battery.
Once contacting the acid solution of battery, please rinse with clear water in time.
Avoid placing any metal object near the battery against short-circuiting.
Acid gas may be generated when the battery is charged so as to ensure good ventilation of surroundings.
When the cabinet is installed, it is necessary to leave enough space around the inverter for heat dissipation; Do
Not install the inverter and the lead-acid liquid battery in the same cabinet, so as to prevent the acid gas
generated when the battery works from corroding the inverter.
Only the type of battery conforming to this inverter can be charged.
Virtual junctions and corroded wires may cause great heat, melt the insulation of wire, burn the surrounding
material, and even cause fire. Therefore, it is necessary to ensure that all connectors are tightened, and wires
are preferably fixed with ties to avoid loose connectors caused by shaking of wires during mobile applications.
The connection wire of the System shall be selected according to the current density no more than 5A/mm2.
After the power is turned off, there is still high voltage inside the inverter. Please Do Not open or touch the
internal devices, and Do Not carry out relevant operations until the capacitor is discharged.
Please Do Not install the inverter in any flammable and explosive environment.
No reverse polarity is allowed for the battery input of this product, otherwise, it is easy to damage the
equipment or cause any unpredictable danger.
The mains input and AC output are high voltage, so please Do Not touch the wire connector.
When the fan is working, Do Not touch it to prevent injury.
For the input power of load equipment, it is required to confirm that this Inverter is the only input equipment
and it is forbidden to use it in parallel with any other input AC power source so as to avoid damage.
2.2 Wiring Specification and Circuit Breaker Selection
The wiring and installation methods must comply with national and local electrical specifications.
Recommended PV Array Wiring Specification and Circuit Breaker Selection: since the output current of PV array is
affected by the type of PV module, connection mode and illumination angle, the minimum wire diameter of PV array
is calculated according to the short-circuit current of PV array; please refer to the short-circuit current value in the
specification of PV modules (the short-circuit current of PV modules is unchanged when they are connected in series;
if in parallel, the short-circuit current will be the sum of the short-circuit current of all parallel modules); the short-
circuit current of the array cannot exceed the maximum PV input current.

Solar Hybrid Inverter V1.0 9
Refer to the following table for PV input wire diameter and switch:
Models
Recommended PV wiring
diameter
Maximum PV input
current
Recommended circuit
breaker model
HES4855S100-H
6mm2/10AWG
22A
2P—25A
Note: The input voltage of PV panels in series shall not exceed the maximum open-circuit voltage corresponding to
the Model.
Refer to the following table for recommended AC input wire diameter and switch
Models
Recommended AC input
wiring diameter
Maximum bypass input
current
Recommended circuit
breaker model
HES4855S100-H
10mm2/7AWG
40A
2P—40A
Note: There is a corresponding circuit breaker at the input wiring of Mains Power, so no circuit breaker can be
added.
Recommended Battery Access Wire Diameter and Switch Selection
Models
Recommended
battery wiring
diameter
Rated battery
discharge
current
Maximum charging
current
Recommended circuit
breaker model
HES4855S100-H
30mm2/2AWG
125A
100A
2P—200A
Recommended AC Output Wiring Specification and Circuit Breaker Selection
Models
Recommended AC
output wiring
Rated output
current
Maximum bypass
output current
Recommended circuit
breaker model
HES4855S100-H
10mm2/7AWG
24A
40A
2P—40A
Note: The wiring diameter is for reference only. If the distance between the PV array and the inverter or between
the inverter and the battery is long, using thicker wire can reduce the voltage drop and improve the system
performance.
Note: The above wiring diameters and circuit breakers are recommended only. Please select the appropriate wiring
diameters and circuit breakers, as the case may be.

Solar Hybrid Inverter V1.0 10
2.3 Installation and Wiring
Installation Steps:
Step 1: Determine the installation position of the Inverter. If installing the inverter on wall, please make sure that
there is enough air flowing through the heat sink of the Inverter, leaving 200mm operating space on the left and
right of the Inverter and 500mm air inlet and outlet heat dissipation space on the top and bottom. Refer to the
following complete machine installation diagram.
Warning: Danger of Explosion! NEVER install the Inverter and the lead-acid liquid battery in the same
confined space! Do Not install in a confined space where the battery gas may accumulate.

Solar Hybrid Inverter V1.0 11
Step 2: Open 4 holes in the wall according to the following dimensions, and knock in expansion screws, as shown
in the following figure:
Step 3: Hang up the machine and tighten the screws.

Solar Hybrid Inverter V1.0 12
Step 4: Remove the terminal protection cover.
Step 5: Connect the Wire. (Note: The wire shall penetrate into the corresponding joint before crimping the
terminal.)
Connection method of AC I/O:
①Prior to AC I/O wiring, disconnect the external circuit breaker and confirm whether the cable used is thick
enough. Please refer to Chapter "2.2 Wiring Specification and Circuit Breaker Selection";
②According to the cable sequence and terminal position shown in the following figure, connect the AC input line
properly, please connect the grounding wire first, then connect the live wire and the neutral wire;

Solar Hybrid Inverter V1.0 13
L: Live Wire N: Neutral Wire : Ground Wire
③Connect the AC output line properly according to the cable sequence and terminal position shown in the above
figure. Please connect the ground wire first, then the live wire and the neutral wire.
Wiring Method of PV Input:
①Prior to wiring, disconnect the external circuit breaker and confirm whether the cable used is thick enough.
Please refer to Chapter "2.2 Wiring Specification and Circuit Breaker Selection";
②According to the cable sequence and terminal position shown in the following figure, connect the PV input line
properly.
BAT Wiring Method:
①Prior to wiring, disconnect the external circuit breaker and confirm whether the cable used is thick enough.
Please refer to Chapter "2.2 Wiring Specification and Circuit Breaker Selection". BAT wire shall be connected
with the machine through O-terminal. It is recommended to use O-terminal with inner diameter of 7MM. The
O-terminal must firmly compress BAT wire to prevent excessive heating caused by excessive contact impedance;
②According to the cable sequence and terminal position shown in the following figure, connect the BAT wire
properly.

Solar Hybrid Inverter V1.0 14
Ground Wire of the Entire Machine:
As shown in the following figure, it is located on the bottom of the chassis and shall be be connected by O-
terminal. It is recommended to use O-terminal with inner diameter of 6MM.
Note: As far as possible, the ground cable should be much thicker as possible (the sectional area of wire should not
be less than 4mm2), and the grounding point should be kept close to the Inverter as possible. The ground wire shall
be shorter as possible.
Warning:
①Please be sure to disconnect the circuit breaker or fuse prior to wiring, since the mains input, AC output and
PV array will generate high voltage;
②Pay attention to safety in the process of wiring; Do Not close the circuit breaker or fuse, and ensure the "+" and
"-"pole leads of each component be connected properly in the process of wiring; the circuit breaker must be

Solar Hybrid Inverter V1.0 15
installed at the battery end. Please refer to Chapter 2.2 “Wiring Specification and Circuit Breaker Selection”
for their selection;
prior to wiring, please be sure to disconnect the circuit breaker to prevent strong electric spark in the process of
wiring and avoid short-circuiting the battery in the process of wiring; if the inverter is applied in any area with frequent
lightning, it is recommended to install an external surge protection device at PV input.
Step 6: Check whether wires are connected properly and firmly, especially check whether the positive and negative
of the battery input are reversely connected, whether the positive and negative of PV input are reversely connected
and whether the AC input is improperly connected to the AC output.
Step 7: Tighten the waterproof joint cover and close the machine cover back.
Step 8: Start the inverter
First close the circuit breaker at the battery end, then press the circular ON/OFF switch on the right of the machine.
The flashing of "AC/INV" indicator lamp indicates that the inverter works normally. Close the circuit breaker of PV
array and Mains Power again. Finally, open the AC load one by one after the AC output is normal so as to avoid
protection action caused by major instantaneous impact caused by opening the load at the same time and ensure
that the inverter work normally in the preset mode.
Note: If power is supplied to different AC loads, it is recommended to turn on the load with high impulse current
first, and then turn on the load with small impulse current till the load can work stably.
Note: If the inverter is not working properly or the LCD or indicator light displays abnormally, please refer to Chapter
6 for troubleshooting.

Solar Hybrid Inverter V1.0 16
3. Working mode
3.1 Charging Mode
1. Solar First: priority shall be given to charging by PV, and mains charging will be started only when the PV has
failed. It can fully utilize solar energy to generate power in the daytime and then switch to mains charging to keep
the battery level, and can be used in regions where the grid is relatively stable and the feed-in tariff is relatively
expensive.
2. Mains First: priority shall be given to charging by Mains Power, and charging with PV power will be started only
when the Mains has failed.
3. Hybrid Charging: hybrid charging of PV and Mains Power, give priority to PV MPPT charging, and supplement
Mains Power when PV energy is insufficient. When the PV energy is sufficient, the Mains Power will stop charging.
This is the mode of fast charging and suitable for unstable areas of power grid, and can provide sufficient backup
power at any time.
4. Only Solar: Only PV charging, no mains charging is initiated. This is the most energy-efficient mode and the battery
power comes from solar energy, which is usually used in regions with good daylighting conditions.

Solar Hybrid Inverter V1.0 17
3.2 Output Mode
1. Solar First: PV and battery will power the load, with diversified charging modes available and output mode
optional, when the Solar First Mode is selected, the use of green solar energy can be maximized for energy
efficiency and emission reduction. Switch to Mains Power when PV has failed. This mode can maximize the use of
solar energy while maintaining the battery power, which is suitable for regions with relatively stable power grid.
2. Mains First: switch to inverter power supply only when Mains Power has failed, which is equivalent to backup
UPS and is used in regions with unstable power grid.
3. Inverter First: switch to Mains Power supply only when the battery is under-voltage. This mode uses DC
energy to the maximum extent and is used in regions with stable power grid.
4. Hybrid Function: when the battery is not connected or fully charged, the load is powered with the hybrid of PV
and Mains Power, with the maximum output power of PV output.

Solar Hybrid Inverter V1.0 18
4. LCD Screen Operating Instructions
4.1 Operation and Display Panel
The operation and display panel is shown below, including one LCD screen, 3 indicator lights and 4 operation
buttons.
4.2 Introduction to Operation Keys
Function Key
Description
Menu of Enter/Exit Settings
Page Number/Option Increase
Page Number/Option Decrease
Under the menu of Settings, OK/Enter Options
4.3 Introduction to Indicator Light
Indicator light
Color
Description
AC/INV
Yellow
Normally On: Mains Power output
Flicker: Inverter output
CHARGE
Green
Flicker: The battery is being charged.
Normally On: The charging is completed.
FAULT
Red
Normally On: Fault status

Solar Hybrid Inverter V1.0 19
4.4 Introduction to LCD Screen
8
7
%V
Ah
LFP
GEL
NCM
kWh
VAHz
kWh%
VAHz
FAULT
CODE
SETUP
ID
PV LOAD
BYPASS
kWh
VA
SLD
FLD
PV CHG AC CHG
ECO
OVER
LOAD
END OF
DISCHG
UNDER
VOLT
DATE
TIME
BATT
FIRST
VER
SETUP
VALUE
BMS FAULT
UT OT OCOVUV
COM
MAIN
FIRST
SOLAR
FIRST
PV
BATT
MAINS
LOAD
USER
L1
L2
L3
MASTER
FULL
20%
100%
60%
40%
80%
kWVAh
% Hz
HmS
YMD
GENERAT
2
1
3
4
5
6
START
END
CHARGE
DISCHG
BMS VOLT
CURR
RECOVER
PV1
PV2
PAGE
9
Icon
function
Icon
function
Indicates mains power
Indicates the inverter is working
Indicates generator
Indicates home appliances
Indicates solar power
Indicates AC output is overload
Battery remaining capacity is below 5%
Battery remaining capacity is 5%~19%
Battery remaining capacity is 20%~39%
Battery remaining capacity is 40%~59%
Battery remaining capacity is 60%~79%
Battery remaining capacity is 80%~100%
Load percentage is below 5%
Load percentage is 5%~19%
Load percentage is 20%~39%
Load percentage is 40%~59%
Load percentage is 60%~79%
Load percentage is 80%~100%
Indicates that the machine is
communicating with the Surveillance
Equipment
Indicates that the buzzer is not
enabled

Solar Hybrid Inverter V1.0 20
Indicates that the battery is fully charged
Indicates that the current battery type
of the machine is user-defined
Indicates that the current battery type of
the machine is sealed lead-acid battery
Indicates that the current battery type
of the machine is flooded lead-acid
battery
Indicates that the current battery type of
the machine is gel battery
Indicates that the current battery type
of the machine is NCM battery
Indicates that the current battery type of
the machine is LFP battery
Display the page number prompt of
the main interface
Indicates the data page of the main
display interface
Indicates that the machine is currently idle
Indicates that the machine is currently
in normal operation
Indicates that the machine is currently in
an alarm or fault state
Indicates that the machine is currently
in the parameter setting state
Indicates that the PV is in a direct load
state
Indicates that the PV is in a state of
charge
Indicates that the AC is in a state of charge
Indicate that the Mains Power is in
the bypass state
Indicates that the system is enabled in the
ECO mode
Indicates that the output mode is
Battery First
Indicates that the output mode is Mains
Power first
The indicated output mode is Solar
First.
Indicates battery under voltage
Indicates battery overvoltage
Indicates internal communication failure
Indicates system under voltage
Indicates system over voltage
Indicates system low temperature
Indicates system over temperature
Indicates system over current
Indicates BMS communication failure
Indicates the direction of energy flow
When the system is in alarm or fault
state, the main interface displays fault
code; display setting options when
setting
Display parameters of PV, battery,
mains power and load
Main Interface: display real-time time, date, total PV
power generation, total load power consumption,
RS485 address, version number
Setting Interface: display setting contents