APS APSG-3-5.5K-IN User manual

Cata l ogue
1. Introduction ................................................................................................... - 1 -
1.1 Appearence introduction ..................................................................... - 1 -
1.2 Parts list ................................................................................................ - 2 -
2. Safety warnings and instructions .................................................................. - 3 -
2.1 Safety signs ........................................................................................... - 3 -
2.2 Safety instructions ................................................................................ - 4 -
2.3 Using notes ........................................................................................... - 6 -
3. Operation interface ........................................................................................ - 6 -
3.1 Interface view ....................................................................................... - 6 -
3.2 Status indictor ....................................................................................... - 7 -
3.3 Buttons ................................................................................................. .- 7 -
3.4 LCD dispaly ........................................................................................... .- 7 -
4. Product installation ....................................................................................... .- 7 -
4.1 Select installation location ................................................................... - 7 -
4.2 Inverter installation ............................................................................ - 10 -
5. Electrical connections .................................................................................. - 12 -
5.1 DC input terminal connection ............................................................ - 12 -
5.2 AC input terminal connection ............................................................ - 15 -
5.3 Other connections .............................................................................. - 18 -
6. Startup and Shutdown ................................................................................ .- 20 -
6.1 Start up the inverter ........................................................................... - 21 -
6.2 Inverter Shutdown .............................................................................. - 21 -
7. Repair and maintenance ............................................................................. - 21 -
8. General Operation ........................................................................... ............ - 22 -
8.1 The initial interface ............................................................................. - 23 -
8.2 Statistics information .......................................................................... - 25 -
8.3 Fault record ........................................................................................ .- 27 -
8.4 Parameter setting ............................................................................... - 27 -
9. Troubleshooting ........................................................................................... - 31 -
9.1 Troubleshooting ................................................................................. .- 34 -
10. Specification ............................................................................................... - 35 -

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1. Introduction
1.1 Appearance Introduction
Pic1.1 Front view
Pic1.2 Bottom view

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1.2 Parts list
Please check according to following table, to see whether all the parts are
included in the packaging:
1 2 3 4
5 6 7
Pic1.3 Accessories Map
No.
Description
Qty
1
PV grid tie Inverter
1
2
Wall mounting bracket
1
3
Installation screws M4*20
4
4
AC power connectors
1
5
Expansion anchor bolt M6*80
4
6
DC power connectors
4 pairs
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Instruction book
1
Table1.1 Parts list

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2. Safety warnings and instructions
Improper use of the inverter will cause electric shock and burn. During the
installation and maintain, please operate the unit in strict accordance with the
user manual. Please read the user manual carefully before using the inverter.
And please take care of the manual for afterwards use.
2.1 Safety signs
Safety signs are used to emphasize potential safety risk and important safety
information. The manual includes below signs:
Warning：
Safety warning——Indifference of the signs in the manual
may cause injure or even death.
Shock Hazard：
Shock warning sign——Incorrect follow of this sign may get
shocked.
SafetyHint：
Prudent operation——Incorrect follow of the safety
operation hints in this manual may cause inverter defective.
High TemperatureHazard：
Local temperature of inverter may exceed 80 ℃ while under
operating. Please do not touch the inverter case.
2.2 Safety instructions
Warning：
Electrical installation of the inverter must conform to the
safety operation rules of the country or local area.
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Warning：
Inverter is non-isolated topology structure, hence must
insure dc input and ac output are electrical isolated before
operating the inverter. Strictly prohibit grinding the input
positive and negative. Otherwise it will cause inverter
malfunction.
Shock Hazard：
Prohibit disassembling inverter case, existing shock hazard,
because severe injury or death, please ask qualified person
to maintenance.
Shock hazard：
When solar array expose to sunshine, will create dc voltage
on its output, prohibit touching, existing shock hazard.
Shock Hazard：
After disconnecting the input and output of the inverter,
it takes at least 5 minutes for the inverter to completely
release the residual energy and wait for at least 5 minutes
before it can be overhauled.
2.3 Using Notes
The APSG-3-(6K-25K)-IN three phase inverter is designed and tested under
related safety regulations. It can ensure the personal safety of the user.But as an
electric device, It may cause shock or injury by incorrect operation. Please must
operate the unit under below requirements:
1. Inverter should be installed and maintained by qualified person under local
standard regulations.

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2. Must disconnect the AC side first, then disconnect DC side while doing
installation and maintenance, after disconnecting, please wait at least 5
minutes to avoid getting shocked.
3. Local temperature of the inverter may exceed 80 ℃ while under operating.
Do not touch to avoid getting injured.
4. All electrical installation must accord with local electrical standards, and
achieved permission of local power company.
5. Please take appropriate anti-static measure.
6. Please install where children can not touch.
7. When starting the inverter, first close the closed-circuit grid switch, then close
the DC input, turn off the inverter.
8. Don’t insert and remove AC and DC terminals during normal operation of the
inverter.
9. The DC input voltage of the inverter cannot exceed the maximum input
voltage of this model.

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3. Operation Interface
3.1 Interface View
Pic3.1 Interface View
3.2 Status Indicator
The inverter panel has 4 indicators, the left one is DC output indicator, green
indicates normal DC input. Beside is the AC indicator, green indicates normal AC
connecting. Next is the operating indicator, green indicates normal output. The
right indicator is alarm, red indicates alarming
Indicator
status
Explanation
●DC
on
Inverter detected input
off
DC low voltage
●AC
on
Grid Connected
off
Grid Unavailable
●NORMAL
on
Under normal operating
off
Stop operating
●ALARM
on
Detected faults or report faults
off
Under normal operating

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3.3 Buttons
There are four buttons on the inverter panel：Above is Up and increase button
(UP), below is down and decrease button (DOWN), left is ESC button (ESC), right
is Enter button (ENTER). Achieving below functions by the four buttons：
●Page Turning (Use UP and DOWN Button)
●Modify adjustable parameters (Use ESC and ENTER button)
3.4 LCD Display
Three phase string inverter use 256*128 dot formation display, mainly contains
the following：
●Inverter operation status and information
●Operating information
●Warning massage and malfunction display.
4. Product installation
4.1 Select installation location
After you received the inverter and prepare to install it, please select a suitable
location, which should consider below factors:
●Ventilation—must insure the air ventilation of the installation location;
improper installation may cause overheating and affect the working efficiency
and lifespan.
●Sun-shade—Exposing the inverter under sunshine will cause it overheating and
effect the working efficiency.
●Shelter for rain and snow—Even though the inverter is IP65 waterproof. We
still recommend install the inverter at the ventilated place where is sheltered
for rain and snow. It can help extend the lifespan of the inverter.

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Pic4.1 Recommended installation place
●Please select the wall with certain bearing capacity.
●When do the installation, vertical slope cannot exceed +/-15°, make sure no
lateral tilt. Otherwise will affect the function of the heat sink and cause the
output power lower than expected.
●If install more than one inverter, must leave at least 500mm gap between each
inverter, and each inverter must leave at least 500mm from above and below.
And must install the inverter at the place where children can not touch.
●Consider whether the installation environment is helpful to see the inverter
LCD display and indicator status.
●Must offer a ventilated environment if inverter is installed in the airtight house.
SafetyHints：
Do not place or store any items next to the inverter.

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Pic4.2 Installation angle
Pic4.3 Installation gap

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4.2 Inverter installation
Pic4.4 Dimensions of hanging plates (5.5-12KW)
Pic4.5 Dimensions of hanging plates (15-25KW)
The inverter should be mounted in a vertical position. The steps of mounting are
as follows:
1. For brick walls, the position of the holes should be suitable for the expansion
bolts.
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2. Make sure the bracket is horizontal and the mounting holes are in the correct
points. Drilling the holes on the wall according the marks.
3. Using the expansion bolts to fix the bracket to the wall.
Pic4.6 Inverter Installation
1. Mark the mounting holes by positioning the bolts on the mounting bracket on
the appropriate wall. On the brick wall, select the location of the installation
hole must be suitable for expansion bolt installation.
Pic4.7 Installation of hanging plates

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2. Ensure that the location of the mounting holes on the wall is consistent with
the mounting plate holes ( Picture 4.7 ) and that the mounting bracket is
horizontal.
3. Hang the inverter on the upper part of the mounting bracket and lock the
inverter using the M4 screw in the fitting (Picture 4.8). Ensure the inverter not be
moved.
Pic4.8 Mounting of inverter
5. Electrical Connections
5.1 DC input terminal connection
1. Switch AC off
2. Switch DC off
3. Connect the inverter to the grid
Pic5.1 DC-connector (MC4) Pic5.2 DC+ connector (MC4)

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The steps of assembling the DC connector are listed as follows:
1）Strip off the DC wire about 7mm, disassemble the connector cap nut (see
Picture 5.3).
Pic5.3 Disassemble the connector cap nut
2）Crimp the contact pin to the wire using a proper wire crimp tool as shown
in Picture 5.4.
Pic5.4 Crimp the contact pin to the wire
3）Insert the contact pin into the connector housing until it locks in place.
Screw the cap nut onto the connector housing. Torque to 2.5-3Nm (as shown in
Picture 5.5).
Pic5.5 cap nut screwed on
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Cable type
Traverse area（mm²）
Outside diameter
of cable（mm）
Range
Recommended
value
Industry generic
PV cable
（model;PV1-F）
4.0-6.0
(12-10AWG)
4.0(12AWG)
5.5-9.0
Table5.1 Specs of AC cable
4) Connect the finished DC cable to the inverter.
Pic5.6 DC input connection
NOTE: Panels will generate high voltage, after series connection can lead to
life-threateningconditions. So the solar panel needs to be covered with opaque
material before connecting DC input line and ensure that the DC switch is 'OFF',
otherwise, the high voltage of the inverter may lead to life-threatening
conditions.
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5.2 AC input terminal connection
After the DC terminal is connected, do not close the DC switch first. Connect the
AC terminal to the AC terminal of the inverter; the AC terminal is equipped with
three-phase AC terminals that can be conveniently connected. Flexible cords are
recommended for ease of installation. The specifications are as shown in Table
5.2.
Cable dia
Cable CSA
Cable outer dia
AWG
Specification
2.5mm
10mm2
15-18mm
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Model
APSG-3-(5.5-12K)-
IN
APSG-3-15K-IN
APSG-3-20K-IN
APSG-3-25K-IN
Breaker
22A/400V
30A/400V
36A/400V
50A/400V
Max cable length
Outside cable(3+PE)20m
Table5.2 Cable information
1. Matching socket 2.Sleeve 3.Sealing sleeve
Pic5.7 AC connector structure
The AC output connector is divided into three parts: matching socket, sleeve and
sealing sleeve, as shown in Picture 5.7, the steps are as follows:
Step 1: Remove the cable sealing ring and sleeve in sequence from the
AC
connector.

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Step 2: Use strippers to strip the protective sheath and insulation layer of
the AC cable to the right length, as shown in Picture 5.8.
Warning：
pic5.8 Strip AC cable
Be careful to distinguish the L1, L2, L3 and PE of the AC cables.
The APSG-3-(5.5-25K)-IN doesn't involve N lines.
Step 3: Connect the cable (L1, L2, L3, PE) into the sealing sleeve and sleeve.
Step 4: Use the hexagon screwdriver, loosen the bolts of the socket in turn,
and insert each cable core into the corresponding jack, and set each screw. The
connection hole of AC connection terminal labeling is shown in Picture 5.9.
Pic5.9 AC Connector Hole Pattern

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SafetyHints：
The AC cable line L1 is connected to socket 1; L2 is connected to
socket 2; L3 is connected to socket 3; the PE line is connected to
the earth , and does not involve N wire connections, please do
not insert N lines into the socket of N.
Step 5: Set the sleeve and sealing ring in place.
Step 6: Connect the terminals to the inverter as shown in Picture
5.10.
Pic5.10 AC input connection
5.3 Other connections
5.3.1 The connection of the ground line
Good grounded is important for resisting the surge voltage shock and improving
EMI’s performance, so before the connection of AC, DC, communication
connections, need to ground first. For a single system, just ground the PE cable;

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For multiple machine systems, all PE cables of the inverter need to be connected
to the same grounding copper platoon to ensure the equipotent connection. The
installation of the shell ground wire is shown as Picture 5.11.
Pic5.11 The installation of the shell ground wire
Warning：
Inverter has built-in leakage current detection circuit, if it
connected external leakage current protection device, the
current action must be greater than 300mA or higher,
otherwise inverter may not work properly.
5.3.2 Inverter monitoring connection
APS inverter has the function of wireless remote monitoring. The inverter has
Wifi function and Wifi Plug in the accessories are used to realize the connection
between the inverter and the network. The operation, installation, networking,
APP download are detailed in the WIFI PLUG instructions. Picture 5.12 is the
Internet monitoring solution.