PowMr POW-HPM Series User manual

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Important Safety Instructions
Please save these instructions for future use!
Please keep this manual for future use.
This manual contains all safety, installation and operating instructions for the POW-HPM Series all-in-one
solar charge inverter. Please read all instructions and precautions in the manual carefully before installation
and use.
Non-safety voltage exists inside the all-in-one solar charge inverter. To avoid personal injury, users shall not
disassemble the all-in-one solar charge inverter themselves. Contact our professional maintenance personnel
if there is a need for repair.
Do not place the all-in-one solar charge inverter within the reach of children.
Do not install the all-in-one solar charge 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 all-in-one solar charge inverter is hot when it is working. Do not touch it.
Do not open the terminal protective cover when the all-in-one solar charge inverter is working.
It is recommended to attach proper fuse or circuit breaker to the outside of the all-in-one solar charge 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 all-in-one solar charge inverter.
After installation, check that all wire connections are tight to avoid heat accumulation due to poor connection,
which is dangerous.
The all-in-one solar charge inverter is off-grid. It is necessary to confirm that it is the only input device for load,
and it is forbidden to use it in parallel with other input AC power to avoid damage.

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1. GENERAL INFORMATION ....................................................................................................................3
1.1 PRODUCT OVERVIEW AND FEATURES .....................................................................................3
1.2 BASIC SYSTEM INTRODUCTION .................................................................................................4
1.3 APPEARANCE ............................................................................................................................... 5
1.4 DIMENSION DRAWING ................................................................................................................. 6
2. INSTALLATION INSTRUCTIONS ........................................................................................................ 7
2.1 INSTALLATION PRECAUTIONS ................................................................................................... 7
2.2 WIRING SPECIFICATIONS AND CIRCUIT BREAKER SELECTION ............................................8
2.3 INSTALLATION AND WIRING ....................................................................................................... 9
2.4 PARALLEL MACHINE WIRE CONNECTION .............................................................................. 14
2.4.1 INTRODUTTION ...................................................................................................................14
2.4.2 PRECAUTIONS FOR CONNECTING THE PARALLEL CONNECTING LINES .................. 14
2.4.3 SCHEMATIC DIAGRAM OF PARALLEL CONNECTION IN SINGLE PHASE .....................15
2.4.4 SCHEMATIC DIAGRAM OF PARALLEL CONNECTION IN SPILIT PHASE .......................18
3. OPERATING MODES ......................................................................................................................... 22
3.1 CHARGING MODE .......................................................................................................................22
3.2 OUTPUT MODE ........................................................................................................................... 23
4. LCD SCREEN OPERATING INSTRUCTIONS ...................................................................................24
4.1 OPERATION AND DISPLAY PANEL .......................................................................................... 24
4.2 SETUP PARAMETERS DESCRIPTION ......................................................................................28
4.3 BATTERY TYPE PARAMETERS ................................................................................................ 32
5. OTHER FUNCTIONS .......................................................................................................................... 34
5.1 DRY CONTACT ............................................................................................................................34
5.2 RS485 COMMUNICATION PORT ................................................................................................34
5.3 USB COMMUNICATION PORT ................................................................................................... 34
5.4 PARALLEL COMMUNICATION FUNCTION (PARALLEL OPERATION ONLY) ......................... 34
5.5 CURRENT SHARING DETECTION FUNCTION (PARALLEL OPERATION ONLY) ...................34
6. PROTECTION ..................................................................................................................................... 35
6.1 PROTECTIONS PROVIDED ........................................................................................................ 35
6.2 FAULT CODE ............................................................................................................................... 36
6.3 HANDLING MEASURES FOR PART OF FAULTS ...................................................................... 38
7.TROUBLESHOOTING ......................................................................................................................... 39
8. TECHNICAL PARAMETERS ..............................................................................................................40
Table of Contents

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1.1 Product overview and features
POW-HPM series is a new all-in-one hybrid solar charge inverter, which integrates solar energy storage & means
charging energy storage and AC sine wave output. Thanks to DSP control and advanced control algorithm, it has
high response speed, high reliability and high industrial standard. Four charging modes are optional, i.e. Only Solar,
Mains Priority, Solar Priority and Mains & Solar hybrid charging; and two output modes are available, i.e. Inverter
and Mains, to meet different application requirements.
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 a state of the art 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.
Features:
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.
11. Complete protections, including short circuit protection, over voltage and under voltage .protection, overload
protection, reverse protection, etc.
General information

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1.2 Basic system introduction
The figure below shows the system application scenario of this product. A complete system consists of the
following parts:
1. PV module: Convert light energy into DC power, and charge the battery through the all-in-one solar charge
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. All-in-one solar charge 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
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
In







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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 all-in-one solar charge inverter for
heat dissipation. Do not install the all-in-one solar charge 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.
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 all-in-one solar charge 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 all-in-one solar charge 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.
Installation instructions

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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.
Refer to the table below for PV input wire diameter and switch:
Models
Recommended PV
wiring diameter
Maximum
PV input
current
Recommended circuit
breaker type
POW-HPM5.6KW
6mm2/10AWG
22A
2P—25A
Note: The voltage in series shall not exceed the maximum PV input open circuit voltage.
Refer to the table below for recommended AC input wire diameter and switch:
Models
Recommended
AC input wiring
diameter
Maximum
bypass input
current
Recommended circuit
breaker type
POW-HPM5.6KW
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
Models
Recommende
d battery
wiring
diameter
Rated
battery
discharge
current
Maximum
charge
current
Recommended
circuit breaker
type
POW-HPM5.6KW
30mm2/2AWG
125A
80A
2P—160A
Recommended AC output wiring specifications and circuit breaker selection
Models
Recommend
ed AC output
wiring
diameter
Rated
inverter AC
output
current
Maximum
bypass
output
current
Recommended
circuit breaker type
POW-HPM5.6KW
10mm2/7AWG
22A
40A
2P—40A
Note: The wiring diameter is for reference only. If the distance between the PV array and the all-in-one solar
charge inverter or the distance between the all-in-one solar charge 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.

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2.3 Installation and wiring
Installation steps:：
Step 1: Determine the installation position and the space for heat dissipation. Determine the installation position of
the all-in-one solar charge inverter, such as wall surface; when installing the all-in-one solar charge 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 all-in-one solar charge inverter and lead-acid battery in the
same confined space! Also do not install in a confined place where battery gas may collect.

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Step 2: Remove the terminal cover
Step3: Wiring
AC input / output wiring method:
①Prior to AC input/output wiring, opening the external circuit breaker and confirm that the wire used is
thick enough. Please refer to Section 2.2 “Wiring Specifications and Circuit Breaker Selection”;
②Properly connect the AC input wire according to the wire sequence and terminal position shown in the
figure below. Please connect the ground wire first, and then the live wire and the neutral wire;
：Ground L：Live N：Neutral

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③Properly connect the AC output wire according to the wire sequence and terminal position shown in the
figure below. Please connect the ground wire first, and then the live wire and the neutral wire. The ground
wire is connected to the grounding screw hole on the cabinet through the O-type terminal.
：Ground L：Live N：Neutral
Note: The grounding wire shall be as thick as possible (cross-sectional area is not less than 4mm2). The grounding
point shall be as close as possible to the all-in-one solar charge inverter. The shorter the grounding wire, the better.
PV input wiring method
①Prior to wiring, disconnect the external circuit breaker and confirm that the wire used is thick enough.
Please refer to Section 2.2 “Wiring Specifications and Circuit Breaker Selection”;
②Properly connect the PV input wire according to the wire sequence and terminal position shown in the
figure below.
PV+: PV input positive pole PV-: PV input negative pole

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BAT wiring method:
①Prior to wiring, disconnect the external circuit breaker and confirm that the wire used is thick enough.
Please refer to Section 2.2 “Wiring Specifications and Circuit Breaker Selection”. The BAT wire needs to be
connected to the machine through the O-type terminal. The O-type terminal with an inner diameter of 5 mm is
recommended. The O-type terminal shall firmly press the BAT wire to prevent excessive heat generation
caused by excessive contact resistance;
②Properly connect the BAT wire according to the wire sequence and terminal position shown in the figure
below.
BAT+: Battery positive electrode BAT-: Battery negative electrode
Warnings:
①Mains input, AC output and PV array will generate high voltage. So, before wiring, be sure to opening the
circuit breaker or fuse;
②Be very careful during wiring; do not close the circuit breaker or fuse during wiring, and ensure that the “+”
and “-” pole leads of each component are connected properly; a circuit breaker must be installed at the battery
terminal. Refer to Section 2.2 “Wiring Specifications and Circuit Breaker Selection” to select a right circuit
breaker. Before wiring, be sure to disconnect the circuit breaker to prevent strong electric sparks and avoid
battery short circuit; if the all-in-one solar charge inverter is used in an area with frequent lightning, it is
recommended to install an external lightening arrester at the PV input terminal.
Step 4: Check if the wiring is correct and firm. In particular, check if the battery polarity is reversed, if the PV input
polarity is reversed and if the AC input is properly connected.

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Step 5: Install the terminals cover.
Step 6: Turn on the all-in-one solar charge inverter
First, close the circuit breaker at the battery terminal, and then turn the rocker switch
on the left side of the machine to the "ON" state. The "AC/INV" indicator flashing
indicates that the inverter is working normally. Close the circuit breakers of the PV
array and the Mains. Finally, turn on AC loads one by one as the AC output is normal
to avoid a protection action caused by a large momentary shock due to simultaneous
turning on the loads simultaneously. Now, the machine goes into a normal
operation according to the set mode.
Note: If power is supplied to different AC loads, it is recommended to first turn on the load with a large surge
current. After the load is stable, turn on the load with a small surge current.
Note: If the all-in-one solar charge inverter does not work properly or the LCD or indicator is abnormal, refer to
Chapter 6 to handle the exceptions.

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2.4 Parallel machine wire connection
2.4.1 Introduction
1. Up to six units connected in parallel.
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 or split 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 split phase: Ensure N-to-N and PE-to-PE connection for all all-in-one solar
charger inverters. The Llines of all inverters connected to the same phase need to be connected together.
But Llines 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 split phase: Ensure N-to-N and PE-to-PE connection for all all-in-one solar
charger inverters. The Llines of all inverters connected to the same phase need to be connected together.
But Llines 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.

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4. Wiring of parallel communication line:
Parallel connection in single or split 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.
5. 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 split 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.
6. 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.
7. 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 split 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:

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d）Six all-in-one solar charger inverters of the system connected in three phase:
2+2+2 system:
3+2+1 system:
4+1+1 system: