CHISAGE CEP4850-EU-80-H User manual

Solar off grid hybrid inverter
User Manual
Product models:
CEP4850-EU-80-H

Important Safety Instruction
Please maintain the manual for reference in the future
The manual comprises all safety, installation and operation instruction for CE48-H Solar Energy Storage and
Solar off grid hybrid inverter.
Before installation and use, please carefully read all instructions and notices in the manual.
➢There is unsafe voltage inside the solar off grid hybrid inverter. In order to avoid personal injury, the
user shall not dismantle the machine by himself. To repair the machine, it is required to contact the
company's professional maintenance personnel.
➢Non-safety voltage exists inside the off-grid Hybrid Inverter. To avoid personal injury, users shall not
disassemble the off-grid Hybrid Inverter themselves. Contact our professional maintenance personnel if there
is a need for repair.
➢Do not place the off-grid Hybrid Inverter within the reach of children.
➢Do not install the off-grid Hybrid Inverter in harsh environments such as moist, oily, flammable or
explosive, or heavily dusty areas.
➢The mains input and AC output are high voltage, so please do not touch the wiring terminals.
➢The housing of the off-grid Hybrid Inverter is hot when it is working. Do not touch it.
➢Do not open the terminal protective cover when the off-grid Hybrid Inverter is working.
➢It is recommended to attach proper fuse or circuit breaker to the outside of the off-grid Hybrid Inverter.
➢Always disconnect the fuse or circuit breaker near the terminals of PV array, mains and battery before
installing and adjusting the wiring of the off-grid Hybrid Inverter.
➢After installation, check that all wire connections are tight to avoid heat accumulation due to poor
connection, which is dangerous.
➢The solar off grid hybrid inverter is the off-grid type. It is required to confirm that the all-in-one machine
is the unique power supply input device for the load device. It is forbidden to use the machine in parallel with
other input AC power to avoid damage.

Table of Contents
1. General information ...................................................................................................................1
1.1 Product overview and characteristics............................................................................................ 1
1.2 Basic system introduction................................................................................................................. 2
1.3 Appearance........................................................................................................................................... 3
1.4 Dimension drawing............................................................................................................................. 4
2. Installation Instruction...............................................................................................................4
2.1 Installation precautions ..................................................................................................................... 4
2.2 Wiring specifications and circuit breaker selection ................................................................... 5
2.3 Installation and Wiring ...................................................................................................................... 6
2.4 Parallel machine wire connection................................................................................................. 10
3. Operating Mode........................................................................................................................18
3.1 Charge mode...................................................................................................................................... 18
3.2 Output mode...................................................................................................................................... 19
4. Operation Instruction for LCD Screen....................................................................................20
4.1 Operation and display panel.......................................................................................................... 20
4.2 Introduction to operation keys...................................................................................................... 21
4.3 Introduction to indicator light....................................................................................................... 21
4.4 Introduction to LCD screen............................................................................................................. 21
4.5 Setting parameter ............................................................................................................................. 24
4.6 Battery type parameters.................................................................................................................. 30
5. Other Function...........................................................................................................................32

5.1 Dry node function............................................................................................................................. 32
5.2 RS485 communication function.................................................................................................... 32
5.3 USB communication function........................................................................................................ 32
5.4 Parallel communication function (parallel operation only) ................................................... 33
5.5 Current sharing detection function (parallel operation only) ............................................... 33
6. Protection...................................................................................................................................34
6.1 Protection function........................................................................................................................... 34
6.2 Meaning of fault code ..................................................................................................................... 35
6.3 Some fault troubleshooting........................................................................................................... 37
7. Troubleshooting........................................................................................................................39
8. Technical Parameter..................................................................................................................40

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1. General information
1.1 Product overview and characteristics
CEP series is a new type of mixed solar energy storage inverting & control all-in-one machine integrating
solar energy storage & municipal power charge storage and AC sine wave output. It adopts DSP control and
advanced control algorithm to achieve characteristics of high response speed, high reliability and high
industrial standard. There are four charge modes namely only solar power, mains power priority, solar power
priority, mains power & solar power; and two optional output modes, namely inverting and mains power to
meet different application needs.
The solar charging module applies the latest optimized MPPT technology to quickly track the maximum
power point of the PV array in any environment and obtain the maximum energy of the solar panel in real
time.
Through an advanced control algorithm, the AC-DC charging module realizes fully digital voltage and
current double closed loop control, with high control precision in a small volume. Wide AC voltage input
range and complete input/output protections are designed for stable and reliable battery charging and
protection.
Based on full-digital intelligent design, the DC-AC inverter module employs advanced SPWM technology
and outputs pure sine wave to convert DC into AC. It is ideal for AC loads such as household appliances,
power tools, industrial equipment, and electronic audio and video equipment. The product comes with a
segment LCD design which allows real-time display of the operating data and status of the system.
Comprehensive electronic protections keep the entire system safer and more stable.
Characteristics:
1. Full digital voltage and current double closed loop control, advanced SPWM technology, output of pure
sine wave.
2. Two output modes: mains bypass and inverter output; uninterrupted power supply.
3. Available in 4 charging modes: Only Solar, Mains Priority, Solar Priority and Mains & Solar hybrid
charging.
4. Advanced MPPT technology with an efficiency of 99.9%.
5. Designed with a LCD screen and 3 LED indicators for dynamic display of system data and
operating status.
6. ON/OFF rocker switch for AC output control.
7. Power saving mode available to reduce no-load loss.
8. Intelligent variable speed fan efficiently dissipate heat and extend system life.
9. Lithium battery activation by PV solar or mains, allowing access of lead-acid battery and lithium
battery.
10. 360 ° all-around protection with a number of protection functions.

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11. Complete protections, including short circuit protection, over voltage and under voltage
protection, overload protection, reverse protection, etc.
1.2 Basic system introduction
The figure below shows the system application scenario of this product. A complete system includes the
following parts:
1. PV module: Convert light energy into DC power, and charge the battery through the off-grid Hybrid Inverter,
or directly invert into AC power to drive the load.
2. Mains or generator: Connected at the AC input, to power the load while charging the battery. If the mains
or generator is not connected, the system can also operate normally, and the load is powered by the battery
and PV module.
3. Battery: Provided to ensure normal power supply to the system loads when solar energy is insufficient and
the Mains is not connected.
4. Household load: Allow connection of various household and office loads, including refrigerators, lamps, TVs,
fans and air conditioners.
5. Off-grid Hybrid Inverter: The energy conversion unit of the whole system.
Specific system wiring method depends on the actual application scenario.

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1.3 Appearance
1234 6
5 7 98 10 11 12 13
1718 16
14
15
①
Overload protector
⑩
RS485-1 communication port
②
ON/OFF rocker switch
⑪
Dry contact port
③
AC input port
⑫
Cooling fan
④
AC output port
⑬
Battery port
⑤
Grounding screw hold
⑭
Cooling fan
⑥
RS485-2 communication port
⑮
PV port
⑦
Current sharing port
(parallel module only)
⑯
Function key
⑧
Parallel communication port
(parallel module only)
⑰
Indicator light
⑨
USB communication port
⑱
LCD screen

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1.4 Dimension drawing
2. Installation Instruction
2.1 Installation precautions
Please read this manual carefully prior to installation to familiarize yourself with the installation steps.
➢Be very careful when installing the battery. Wear safety goggles when installing a lead-acid liquid battery.
Once coming into contact with the battery acid, rinse with clean water timely.
➢Do not place metal objects near the battery to prevent short-circuit of the battery.
➢Acid gas may be generated when the battery is charged. So, please ensure good ventilation.
➢When installing the cabinet, be sure to leave enough space around the off-grid Hybrid Inverter for heat
dissipation. Do not install the off-grid Hybrid Inverter and lead-acid battery in the same cabinet to avoid
corrosion by acid gas generated during battery operation.
➢Only the battery that meets the requirements of the all-in-one unit can be charged.
➢Poorly connected connections and corroded wires may cause great heat which will melt the wire
insulation, burn the surrounding materials, and even cause fires. So, make sure the connectors have been
tightened, and the wires are secured with ties to avoid looseness of connections caused by shaking of
wires during mobile application.
➢The system connection wires are selected according to a current density of not more than 5 A/mm2.
➢Avoid direct sunlight and rainwater infiltration for outdoor installation.

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➢Even after the power is turned off, there is still high voltage inside the unit. Do not open or touch the
internal components, and avoid related operations until the capacitor completely discharges.
➢Do not install the off-grid Hybrid Inverter in harsh environments such as moist, oily, flammable or
explosive, or heavily dusty areas.
➢Polarity at the battery input end of this product shall not be reversed, otherwise it may damage the
device or cause unpredictable danger.
➢The mains input and AC output are high voltage, so please do not touch the wiring terminals.
➢When the fan is working, do not touch it to prevent injury.
➢Load equipment input power needs to confirm that this off-grid Hybrid Inverter is the only input device,
and it is forbidden to use in parallel with other input AC power to avoid damage. It is necessary to
confirm that the solar charge inverter is the only input device for load equipment, and it is forbidden to
use it in parallel with other input AC power to avoid damage
2.2 Wiring specifications and circuit breaker selection
Wiring and installation must comply with national and local electrical codes.
Recommended PV array wiring specifications and circuit breaker selection: Since the output current of the
PV array is affected by the type, connection method and illumination angle of the PV module, the minimum
wire diameter of the PV array is calculated according to its short-circuit current; refer to the short-circuit
current value in the PV module specification (the short-circuit current is constant when the PV modules are
connected in series; the short-circuit current is the sum of the short-circuit currents of all PV modules
connected in parallel); the short-circuit current of the PV array shall not exceed the maximum input current.
➢Maximum wire diameter that can be connected to the terminal
Terminal location
Maximum accessible wire diameter
AC input
7AWG/10mm2
AC output
7AWG/10mm2
Battery terminal
2AWG/35mm2
PV input
8AWG/8mm2
➢Please refer to the table below for PV input wire diameter and switch:
Type
Recommended wire
diameter
Maximum PV input
current
Recommended types of
air switch or breaker
CEP4850-EU-80-H
6mm2/10AWG
22A
2P—25A
Note: the voltage in parallel shall not exceed maximum PV input open-circuit voltage.

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➢Please refer to the table below for recommended AC input wire diameter and switch:
Type
Recommended wire
diameter
Maximum bypass
input current
Recommended types of
air switch or breaker
CEP4850-EU-80-H
10mm2/7AWG
40A
2P—40A
Note: There is already an appropriate circuit breaker at the Mains input wiring terminal, so it is not
necessary to add one more.
➢Recommended battery input wire diameter and switch selection
Type
Recommended
wire diameter
Rated battery
discharge
current
Maximum
charge current
Recommended
types
of air switch or
breaker
CEP4850-EU-80-H
30mm2/2AWG
125A
80A
2P—160A
➢Recommended AC output wiring specifications and circuit breaker selection
Type
Recommended
wire diameter
Rated
inverter AC
output
current
Maximum bypass
output current
Recommended
types of air switch
or breaker
CEP4850-EU-80-H
10mm2/7AWG
22A
2P—40A
CEP4850-EU-80-H
Note: The wiring diameter is for reference only. If the distance between the PV array and the off-grid Hybrid
Inverter or the distance between the off-grid Hybrid Inverter and the battery is relatively long, using a thicker
wire can reduce the voltage drop to improve system performance.
Note: The above are only recommended wiring diameter and circuit breaker. Please select the appropriate
wiring diameter and circuit breaker according to actual situations.
2.3 Installation and Wiring
Please check whether the accessories are complete before installation
List of accessories:
model
Serial No
name
quantity
Specifications
CEP4850-EU-80-H
1
Manual
1
Neutral, English
2
Certificate
1
Neutral, English
3
Test report
1
Neutral, Chinese/English
4
Warranty Card
1
Neutral, English
5
Cross screw
2
M6*10mm
6
Flange screws
2
M6*10mm
7
Wring terminal
2
SC35-6
8
Communication cable
1
DB15

7
9
Current sharing cable
1
2P
Installation step:
Step 1: Determine the installation position and the space for heat dissipation. Determine the installation
position of the off-grid Hybrid Inverter, such as wall surface; when installing the off-grid Hybrid Inverter,
ensure that there is enough air flowing through the heat sink, and space of at least 200m m to the left and
right air outlets of the inverter shall be left to ensure natural convection heat dissipation. Refer to the
installation diagram of the whole machine as above.
Warning: Danger of explosion! Never install the off-grid Hybrid Inverter and lead-acid battery in the
same confined space! Also do not install in a confined place where battery gas may collect.
Step 2: Remove the terminal protection cover
Step 3: wiring

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AC input/output wiring method:
①Before AC input/output wiring, disconnect the external breaker at first and then confirm whether the cable
used is thick enough. Please refer to chapter “2.2 Wiring Specification and Breaker type”;
②Correctly connect AC input wire in accordance with cable sequence and terminal position shown in the
figure below. Please connect ground lead at first, and then live wire and mull wire;
③：Ground L：Live N：Neutral
④Correctly connect AC output wire in accordance with cable sequence and terminal position shown in the
figure below. Please connect the ground wire at first, and then live wire and null wire. The ground wire is
connected to the ground screw hold through O shaped terminal.
：Ground L：Live N：Neutral
Note: use thick ground cable as far as possible (with cable section not less than 4mm2), place the ground
point to be close to the all-in-one machine as far as possible and choose shorter ground wire to the greatest
extent
Wiring method of PV input:

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Before wiring, disconnect external breaker at first, and confirm whether the used cable is thick enough.
Please refer to chapter “2.2 Wiring Specification and Breaker Type”;
②Correctly connect PV input wire in accordance with cable sequence and terminal position shown in the
figure below.
PV+ positive input pole PV1- negative input pole
BAT wiring method:
①Before wiring, disconnect external breaker at first, and then confirm whether the used cable is thick
enough. Please refer to chapter “2.2 Wiring Specification and Breaker Type ”. BAT wire shall be
connected with the machine via O-shaped terminal. It is recommended to use the O-shaped terminal with
5mm inside diameter. The O-shaped terminal must compress BAT wire firmly to prevent excessive heating
caused by great contact resistance;
②Correctly connect BAT wire in accordance with cable sequence and terminal position shown in the figure
below.
BAT+: positive battery pole BAT-: negative battery pole
Warning notice:
①Input from mains supply, AC output and photovoltaic array may generate high voltage. Before wiring,
make sure to break the breaker or fuse;
②During wiring process, make sure to pay attention to the safety; during the wiring process, please don’t
close the breaker or fuse. At the same time, guarantee that “+”and “-”poles of different parts are

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correctly connected with wires; a breaker must be installed at the battery end and selected based on
chapter “2.2 Wiring Specification and Breaker Type”. Before wiring, make sure to break the breaker to
prevent strong electric spark generated during wiring. At the same time, avoid battery short circuit during
the wiring process; if the all-in-one machine is in the area with frequent thunder, it is suggested to install
an external arrester at PV input terminal.
Step 4: inspect whether the wires are correctly and firmly connected, especially whether the positive and
negative input poles of the battery are correct, whether the positive and negative input poles of PV are
correct, whether AC input is inaccurately connected to AC output terminal.
Step 5: install protective cap of terminal
Step 6: Start the off-grid Hybrid Inverter
At first close the breaker at the battery end, and then press the rocker switch at the
lower left side of the machine to “ON ”state, “AC/INV ”indicator light flashes,
indicating normal operation of inverter. Afterwards, close breakers of photovoltaic
array and mains supply. In the end, after AC output is normal, turn on AC load one
by one to avoid protection action generated by great instant impact owing to
simultaneous turn on of loads. The all-in-one machine operates normally in
accordance with set mode.
Note: if power is supplied to different AC loads, it is suggested to turn on the loads with great impact current,
and then turn on the load with little impact current after the load operates stably.
Note: in case of abnormal operation of all-in-one machine or abnormal display of LCD or indicator light, refer
to Chapter 6 for troubleshooting.
2.4 Parallel machine wire connection
2.4.1 Introduction
1. Up to six units connected in parallel.

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2. When using the parallel operation function, the following connecting lines (package accessories) shall
be firmly and reliably connected:
DB15 Parallel communication line*1: Current sharing detection line*1:
2.4.2 Precautions for connecting the parallel connecting lines
Warning:
1. Battery wiring:
Parallel connection in single three phase: Ensure that all all-in-one solar charger inverters are
connected to the same battery, with BAT + connected to BAT + , BAT - connected to BAT -, and that
the connection is correct with the same wiring length and line diameter before power on and start-up,
so as to avoid the abnormal operation of parallel system output caused by wrong connection.
2. AC OUT wiring:
Parallel connection in single phase: Ensure L-to-L, N-to-N and PE-to-PE connection for all all-in-one
solar charger inverters, and that the connection is correct with the same wiring length and line
diameter before power on and start-up, so as to avoid the abnormal operation of parallel system
output caused by wrong connection. For specific wiring, please refer to 2.4.3 Wiring Diagram
Parallel connection in three phase: Ensure N-to-N and PE-to-PE connection for all all-in-one solar
charger inverters. TheL lines of all inverters connected to the same phase need to be connected
together. But L lines of different phases cannot be joined together. Other connection precautions are
the same as parallel connection in single phase. For specific wiring, please refer to 2.4.4Wiring
Diagram
3. AC IN wiring:
Parallel connection in single phase: Ensure L-to-L, N-to-N and PE-to-PE connection for all all-in-one
solar charger inverters, and that the connection is correct with the same wiring length and line
diameter before power on and start-up, so as to avoid the abnormal operation of parallel system
output caused by wrong connection. Meanwhile, it is not allowed to have multiple different AC source
inputs to avoid damage to the external equipment of the inverter. The consistency and uniqueness of
AC source input shall be ensured. For specific wiring, please refer to 2.4.3 Wiring Diagram.
Parallel connection in three phase: Ensure N-to-N and PE-to-PE connection for all all-in-one solar
charger inverters. TheL lines of all inverters connected to the same phase need to be connected
together. But L lines of different phases cannot be joined together. Other connection precautions are
the same as parallel connection in single phase. For specific wiring, please refer to 2.4.4 Wiring

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Diagram.
4. PV wiring:
When the inverters are connected in parallel output, the solar panels should be connected to each
inverter separately. The maximum open circuit voltage and input current limits for each device must
be followed when connecting the PV modules. Otherwise damage to the device may result.
5. Wiring of parallel communication line:
Parallel connection in single or three phase: Our company's parallel communication line is a DB15
standard computer cable with shielding function. Ensure the "one-in-one-out" rule when connecting
each inverter, that is, connect the male connector (out) of this inverter with the female connector (in)
of the inverter to be paralleled. Do not connect the male connector of the inverter to its female
connector. In addition, make sure to tighten the parallel communication line of each inverter with self-
contained end screws of DB15 to avoid the abnormal operation or damage of the system output
caused by the falling off or poor contact of the parallel communication line.
6. Wiring of current sharing detection line:
Parallel connection in single phase: Our company's current sharing detection line is a twisted
connection line. Ensure the "one-in-one-out" rule when connecting each inverter, that is, connect the
current sharing line of the inverter with the current sharing green port of the inverter to be paralleled
(choose one port from the two, and there is no mandatory sequence requirement). The current
sharing ports of the inverter cannot be connected to each other. In addition, make sure that the red
and black current sharing connection lines of each inverter are not manually exchanged, and make
sure to tighten the lines with self-contained screws to avoid the abnormal operation or damage of the
system output caused by abnormal parallel current sharing detection. For specific wiring, please refer
to 2.4.3 Wiring Diagram.
Parallel connection in three phase: The current sharing detection lines of all inverters connected to
the same phase need to be connected together. But the current sharing detection lines of different
phases cannot be joined together. Other connection precautions are the same as parallel connection
in single phase. For specific wiring, please refer to 2.4.4 Wiring Diagram.
7. Before or after connecting the system, please carefully refer to the following system wiring diagram to
ensure that all wiring is correct and reliable before power on.
8. After the system is wired, powered on and in normal operation, if a new inverter needs to be
connected, make sure to disconnect the battery input, PV input, AC input and AC output, and that all
all-in-one solar charger inverters are powered off before reconnecting into the system.
2.4.3 Schematic diagram of parallel connection in single phase
1. The parallel communication line and current sharing detection line of the all-in-one solar charger
inverter need to be locked with screws after connecting. The schematic diagram is as follows:

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2. In case of parallel operation with multiple inverters, the schematic diagram of parallel connection is as
follows:
a）Two all-in-one solar charger inverters of the system connected in parallel:
b）Three all-in-one solar charger inverters of the system connected in parallel:

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c）Four all-in-one solar charger inverters of the system connected in parallel:
d）Five all-in-one solar charger inverters of the system connected in parallel:
e）Six all-in-one solar charger inverters of the system connected in parallel:

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2.4.4 Schematic diagram of parallel connection in spilit phase
1. The parallel communication line and current sharing detection line of the all-in-one solar charger
inverter need to be locked with screws after connecting. The schematic diagram is as follows:
2. In case of parallel operation with multiple inverters, the schematic diagram of parallel connection is as
follows:
Parallel Operation in three phase :
a）Three all-in-one solar charger inverters of the system connected in three phase:
1+1+1 system:
b）Four all-in-one solar charger inverters of the system connected in three phase:
2+1+1 system:

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c）Five all-in-one solar charger inverters of the system connected in three phase:
3+1+1 system:
2+2+1 system: