Epever HP3542-AH0650P20SA User manual

Inverter/charger
User Manual
HP3542-AH0650P20SA
HP5542-AH1050P20SA

Contents
Important Safety Instructions 1
Disclaimers 5
1 General Information 6
1.1 Overview 6
1.2 Appearance 8
1.3 Naming rules 11
1.4 Connection diagram 11
2 Interface 13
2.1 Indicator 13
2.2 Buttons 14
2.3 Home screen 15
2.4 Interface 16
2.4.1 Real-time data interface 16
2.4.2 User interface 18
2.4.3 Administrator interface 19
2.5 Parameters setting 20
2.5.1 Parameters list 20
2.5.2 Battery voltage control parameters (Smart) 29
2.5.3 Battery voltage control parameters (Expert) 29
2.5.4 Time setting 31
2.5.5 Password modifying 31
3 Single Installation 32
3.1 Attention 32
3.2 Wire and breaker size 33

3.3 Mounting the inverter/charger 34
3.4 Wiring the inverter/charger 35
3.5 Operate the inverter/charger 43
4 Parallel Installation 45
4.1 Wire and breaker size for parallel operation 45
4.2 Precautions for parallel installation 45
4.3 Parallel Operation in Single phase 47
4.3.1 Single phase parallel wiring diagram 47
4.3.2 Debug for single phase parallel 50
4.4 Parallel Operation in Three Phase 53
4.4.1 Three phase parallel wiring diagram 53
4.4.2 Debug for three phase parallel 59
4.5 BMS connection for parallel equipment 63
4.5.1 BMS wiring diagram for parallel 63
4.5.2 BMS parameter setting for parallel 64
4.5.3 BMS control logic for charging and discharging 67
4.6 Parameters Sync Update Item 70
5 Working modes 71
5.1 Abbreviation 71
5.2 Battery mode 71
5.2.1 Scenario A: Both PV and Utility are not available. 71
5.2.2 Scenario B: PV is available, but the Utility is not available. 72
5.2.3 Scenario C: Both PV and Utility are available. 73
5.2.4 Scenario D: The PV is not available, but the Utility is available. 76
5.3 No battery mode 78
6 Protections 79

7 Troubleshooting 81
7.1 Battery faults 81
7.2 PV faults 82
7.3 Inverter faults 84
7.4 Utility faults 86
7.5 Load faults 87
7.6 Other faults for single inverter/charger 88
7.7 Parallel faults 90
7.8 BMS faults 92
8 Maintenance 93
9 Specifications 94
10 Dimensions 96

1
Important Safety Instructions
Please reserve this manual for future review.
This manual contains all the safety, installation, and operation instructions for the HP-AHP20SA series
inverter/charger ("inverter/charger" referred to as this manual).
1. Explanation of symbols
To enable users to use the product efficiently and ensure personal and property safety, please
read the related words carefully when you encounter the following symbols in the manual.
Symbol
Definition
Tip
Indicates any practical advice for reference
IMPORTANT: Indicates a critical tip during the operation, if ignored, may cause the
device to run in error.
CAUTION: Indicates potential hazards, if not avoided, may cause the device
damage.
WARNING: Indicates the danger of electric shock, if not avoided, would cause
casualties.
WARNING HOT SURFACE: Indicates the risk of high temperature, if not avoided,
would cause scalds.
Read the user manual carefully before any operation.
WARNING:
The entire system should be installed by professional and technical personnel.
2. Requirements for professional and technical personnel
Professionally trained.
Familiar with related safety specifications for the electrical system.
Read this manual carefully and master related safety cautions.
3. Professional and technical personnel is allowed to do
Install the inverter/charger to a specified location.
Conduct trial operations for the inverter/charger.
Operate and maintain the inverter/charger.

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4. Safety cautions before installation
CAUTION
When receiving the inverter/charger, please check if there is any damage in
transportation. If you find any problem, please contact the transportation company or
our company in time.
CAUTION
When installing or moving the inverter/charger, follow the instructions in the
manual.
When installing the inverter/charger, end-users must evaluate whether the
operation area exists arc danger.
WARNING
Keep the inverter/charger out of the reach of children.
5. Safety cautions for mechanical installation
WARNING
Before installation, confirm the inverter/charger has no electrical connection.
Ensure enough heat dissipation space for the inverter/charger before installation.
Do not install the inverter/charger in humid, salt spray, corrosion, greasy,
flammable, explosive, dust accumulative, or other severe environments.
6. Safety cautions for electrical connection
CAUTION
Check whether wiring connections are tight to avoid the danger of heat
accumulation due to loose connections.
The inverter/charger shell shall be connected to the ground. The cross-section of
the connection wire should not be less than 4mm2
A fast-acting fuse or breaker, whose rated current is twice the inverter/charger
rated input current, should be used between the battery and the inverter/charger.
DO NOT put the inverter/charger close to the flooded lead-acid battery because
the sparkle in the terminals may ignite the hydrogen released by the battery.
WARNING
Do NOT connect the inverter/charger to another power source or Utility.
Otherwise, the inverter/charger will be damaged.
The AC output terminal is only for the load connection, turn off the inverter/charger
when connecting loads.
It is strictly forbidden to connect a transformer or a load with a surge power (VA)
exceeding the overload power at the AC output port. Otherwise, damage will be
caused to the inverter/charger.

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Both the utility input and AC output are of high voltage, do not touch the wiring
connection to avoid electric shock.
7. Safety cautions for inverter/charger operation
WARNING
HOT
SURFACE
When the inverter/charger works, the shell will generate much heat, and the
temperature is very high. Please do not touch it, and keep it far from the equipment
susceptible to high temperature.
CAUTION
When the inverter/charger is working, please do not open the inverter/charger
cabinet to operate.
When eliminating the fault that affects the safety performance of the
inverter/charger or disconnecting the DC input, turn off the inverter/charger switch
and operate it after the LCD is completely OFF.
8. The dangerous operations would cause an electric arc, fire, or explosion.
Touch the wire end that hasn't been insulation treated and may be electriferous.
Touch the wiring copper row, terminals, or internal devices that may be electriferous.
The connection of the power cable is loose.
Screw or other spare parts inadvertently falls into the inverter/charger.
Improper operations are carried out by untrained non-professional or technical personnel.
WARNING
Once an accident occurs, it must be handled by professional and technical personnel.
Improper operations would cause more serious accidents.
9. Safety cautions for stopping the inverter/charger
First, turn off the AC output and disconnect the utility input breakers. Then, turn off the DC switch.
After the input and output wires are disconnected for ten minutes, the internal conductive modules
can be touched.
No maintenance parts in the inverter/charger. If maintenance service is required, please get in touch
with our after-sales service personnel.
WARNING
Do NOT touch or open the shell after the inverter/charger is powered off within ten
minutes.
10. Safety cautions for inverter/charger maintenance
It is recommended to check the inverter/charger with testing equipment to ensure there is no voltage
or current on the terminals and cables.

4
When conducting the electrical connection and maintenance, post a temporary warning sign or put
up barriers to prevent unrelated personnel from entering the electrical connection or maintenance
area.
Improper maintenance of the inverter/charger may cause personal injury or equipment damage;
It is recommended to wear an antistatic wrist strap or avoid unnecessary contact with the circuit
board.
CAUTION
The safety mark, warning label, and nameplate on the inverter/charger should be
visible, not removed or covered.
11. Working temperature
Working temperature range: -20 ℃~+50 ℃(when the working temperature exceeds 30 ℃, the
charging power and load power will be reduced appropriately. 100% load output is not supported.)
Storage temperature range: -25℃~+60℃(No sharp temperature changing)
Relative humidity: < 95% (Non-condensing)
Altitude: < 4000m (If the altitude exceeds 2000 meters, the actual output power is reduced
appropriately.)
WARNING
The inverter/charger is strictly prohibited from being used in the following places. And
our company shall not be liable for any damage caused by being used in an
inappropriate place.
Do not install the inverter/charger in humid, salt spray, corrosion, greasy,
flammable, explosive, dust accumulative, or other severe environments. Avoid
direct sunlight and rain infiltration when installing it outdoors.
DO NOT install the inverter/charger and flooded lead-acid battery in a sealed
space. Otherwise, a fire may cause when the terminals produce sparks, and it
ignites the flammable gas released by the battery.

5
Disclaimers
The warranty does not apply to the following conditions:
Damage caused by improper use or inappropriate environment (it is forbidden to install the
inverter/charger in humid, salt spray, corrosion, greasy, flammable, explosive, dust accumulative, or
other severe environments).
The actual current/voltage/power exceeds the limit value of the inverter/charger.
Damage caused by working temperature exceeding the rated range.
Arc, fire, explosion, and other accidents caused by failure to follow the inverter/charger stickers or
manual instructions.
Unauthorized dismantling or attempted repair.
Damage caused by force majeure.
Damage occurred during transportation or handling.

6
1 General Information
1.1 Overview
HP-AHP20SA series, upgraded hybrid inverter/chargers that support utility charging, oil generator
charging, solar charging, utility output, inverter output, and energy management. It supports parallel
operation for multiple units (6 units in standard application, and support up to 16 units in parallel) in single
phase and three phase, with 220VAC single phase or 380VAC three phase AC output.
The DSP chip in the product with an advanced control algorithm brings high response speed and
conversion efficiency. In addition, this product adopts an industrial design to ensure high reliability and
features multiple charging and output modes.
Adopt the Three-stage charging method (Bulk Charging, Constant Charging, and Float Charging) to
ensure battery safety.
The large lattice LCD screen shows the operational status and full parameters.
The communication interface with the standard Modbus protocol allows end-users to expand their
applications and is suitable for different monitoring requirements.
The new optimized MPPT tracking technology can fast-track the PV array's maximum power point in any
sunlight conditions and obtain the maximum energy in real time. Two PV input (connect separately or
connect in parallel) is supported, which improves the PV utilization.
Adopting the advanced control algorithm, the AC to DC charging process brings the full digital PFC and
dual closed-loop voltage-current control. It enables the input power factor close to 1 and improves the
control accuracy.
The fully smart digital DC to AC inverting process adopts the advanced SPWM technology, outputs a pure
sine wave, and converts the DC power to AC power. It is suitable for household appliances, power tools,
industrial equipment, audio systems, and other electronics.
End-users can choose energy sources according to actual needs to maximize solar energy utilization and
flexibly take the Utility as a supplement in the hybrid system. This inverter/charger provides high-quality,
high-stability, and high-reliability electric energy to the end-users by improving the solar system's power
supply efficiency.
Features
Full intelligent digital energy storage equipment.
Support battery mode or non-battery mode.

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Non-battery mode: simultaneously charging with solar (Main) and Utility (Assist).
Advanced SPWM technology and pure sine wave output.
Parallel operation in single phase or three phase for 6 units in standard application①
PFC technology reduces the demand on the power grid capacity.
Advanced MPPT technology, with maximum tracking efficiency higher than 99.5%.
HP5542-AH1050P20SA supports two PV inputs to improve PV utilization②.
Supports charging from multiple types of generators③.
Battery voltage controls the dry contact to turn on/off the external equipment.
Battery charging or discharging current limit to compatible with different types of batteries.
Maximum utility charging current settings to flexibly configure utility charging power.
Multiple LED indicators show system status in real-time.
One-button control of AC output.
Large size LCD display for better status monitoring.
RS485 communication interface with optional 4G, WiFi, or TCP modules for remote monitoring.
Built-in Bluetooth to adjust settings through EPEVER APP.
Three-stage charging method to ensure battery safety.
Lithium battery communication port to perform the safe charging and discharging.
Comprehensive electronic protection.
IP30 protection level.
-20℃~+50℃operating temperature range to meets more environment requirements.
①Support up to 16 units in parallel
②Only the HP5542-AH1050P20SA supports two PV input function. It can achieve single channel and
multiple channel MPPT tracking. When connecting two PV arrays separately or in parallel, set the “PV
mode” as “ALL SINGLE” or “ALL MULTIPLE” on the LCD. When the two PV arrays are independently
input, set the “PV mode” as "ALL SINGLE." When there is only one PV array, or two or multiple PV
arrays connected in parallel to the inverter/charger (the PV terminals need to be paralleled externally),
set the “PV mode” as "ALL MULTIPLE."
③When connecting a non-inverter generator, the charging current maybe cannot reach the rated power.
It is recommended to connect an inverter generator. And when using the generator, the “AC Input
mode” needs to be set to the “Generator.” For the specific setting method, refer to chapter 2.5.1
Parameters list.

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1.2 Appearance
HP3542-AH0650P20SA

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HP5542-AH1050P20SA

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No.
Instruction
No.
Instruction
❶
LCD (see chapter 3)
❼
Dry contact interface⑵
❷
Grounding terminal
❽
RS485 port (RJ45, with isolation
design)⑶5VDC/200mA
❸
AC input port
❾
PV terminals
❹
AC output port
❿
Power switch
❺
Utility over-current protector
⓫
Battery terminals
❻
BMS port(RJ45, with isolation
design)⑴
⓬
Parallel connection interface
(1) This inverter charger integrates BMS-Link module, different lithium battery manufacturers' BMS
protocols can be converted into our company's standard BMS protocol. In addition, it realizes the
communication between the inverter/charger and the BMS.
CAUTION
Please go to EPEVER official website to download the currently supported BMS
manufacturers and the BMS parameters.
(2) Dry contact specification: 1A@125VAC.
Function: The dry contact interface is connected with the generator switch to turn on/off the generator.
(3) Connecting with the RS485 port, an optional 4G, WiFi, or TCP module can remote control the
inverter/charger. Pin definition for the RS485 port (RJ45):
Pin
Definition
Pin
Definition
1
+5VDC
5
RS485-A
2
+5VDC
6
RS485-A
3
RS485-B
7
GND
4
RS485-B
8
GND

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1.3 Naming rules
1.4 Connection diagram
No battery mode

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Battery mode
WARNING
AC loads shall be determined according to the output power of the inverter/charger.
The load exceeding the maximum output power may damage the inverter/charger.
CAUTION
For different battery types, confirm the relevant parameters before power on.
There are many types of oil generators with complex output conditions, which
must be tested before use. It is necessary to undergo on-site no-load trial
operation testing to confirm that the voltage and frequency fluctuations are within
the allowable range of the equipment before use.

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2 Interface
Note: The display screen can be viewed clearly when the angle between the end-user's horizontal
sight and the display screen is within 90°. If the angle exceeds 90°, the information on the display
screen cannot be viewed clearly.
2.1 Indicator
Indicator
Status
Instruction
PV
OFF
No PV input
Green ON
PV normal
Red ON
PV charging fault (PV1/PV2 over voltage)
LOAD
OFF
No inverter output
Green ON
Inverter, charging, and bypass are normal
Red ON
Inverter fault (inverter over current/over voltage/under
voltage, output short-circuit, and over load)
GRID
OFF
No utility input
Green ON
Utility normal
Green flashing (1Hz)
Oil generator charging
Red ON
Utility charging fault (Utility over voltage/ over current/under
voltage/frequency abnormal)
RUN
Green flashing (1Hz)
Normal communication
Red flashing (1Hz)
Communication fault

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2.2 Buttons
Buttons
Operation
Instruction
Click
Exit the current interface.
Switch from the "home screen" to the "Main Table
Data Information" screen.
/
Click
Browse interface: Up/Down.
Parameters setting interface: Increase or decrease
the parameter value per step size.
Press and hold
Parameters setting interface: Increase or decrease
the parameter value per 10 times the step size.
Click
Click on the Home screen to enter the real-time
data screen
Click on the parameter browse interface to enter
the parameter setting interface.
Confirm the setting parameters.
Press and hold
Press and hold on the home screen to enter the
password interface. After verifying the password,
enter the parameter browse interface.
Click
Click on the time or password setting interface to
move the cursor left.
Press and hold
Press and hold on the home screen to turn on/off the
inverter output, the utility charging, or the utility
bypass.

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2.3 Home screen
No.
Instruction
❶
Display the system time, current battery type, and charging stage. *means a parameter
has been modified. When the BMS communication is normal, the BMS is shown on the far
right.
❷
PV icon: PV connection is normal. No PV connection (or at night).
Actual PV voltage / total PV power
❸
Utility icon: Utility connection is normal. No utility connection.
Utility input voltage / Utility input power
❹
Status: When there are no faults, it displays "OK." When faults occur, it displays the
minimum fault code.
Note: On the home screen, click the "UP/DOWN" button to select the "Status" bar, and
click the "ENTER" button to check the detailed fault.
❺
Load icon: AC output is normal. No AC output.
AC output voltage / AC output power
❻
Battery status: The battery is discharging.
The battery is being charged.
Battery voltage / battery current / lithium battery real-time SOC (display "--" without lithium