Senergy SE 1KTL-S1 User manual

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1K/2K/2K5/3K/3K6-S1
3K/3K6/4K/4K6/5K/6K-D1
User Manual
（Ver. 00)
Shenzhen Senergy Technology Co., Ltd.

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Contents
Forward ........................................................................................................................................... 4
1. Safety Precautions....................................................................................................................... 6
1.1 Personnel Safety.....................................................................................................................6
1.2 The PV Inverter Protection.....................................................................................................6
1.3 Installation Safety...................................................................................................................7
1.4 Electrical Connections............................................................................................................7
1.5 Operating and Commissioning...............................................................................................7
1.6 Maintenance...........................................................................................................................8
1.7 Additional Information...........................................................................................................8
2. Product Overview........................................................................................................................ 9
2.1 Functional Models..................................................................................................................9
2.2 Network Application............................................................................................................10
2.3 Outline and Dimensions.......................................................................................................10
2.3.1 Outline.......................................................................................................................... 10
2.3.2 Dimensions................................................................................................................... 12
2.4 Working Process...................................................................................................................13
2.4.1 Basic principle Description .......................................................................................... 13
2.4.2 Circuit Diagrams .......................................................................................................... 13
2.4.3 Working Modes............................................................................................................ 14
3. Storage....................................................................................................................................... 15
4. Installation................................................................................................................................. 15
4.1 Checking the Outer Packing.................................................................................................16
4.3 Identify the PV inverter........................................................................................................17
4.3.1 Nameplate..................................................................................................................... 17
4.3.2 Compliance and Safety Symbols.................................................................................. 17
4.4 Determining the installation position...................................................................................18
4.4.1 Basic requirements ....................................................................................................... 18
4.4.2 Installation Environment Requirements....................................................................... 19
4.4.3 Carrier Requirements.................................................................................................... 19
4.4.4 Installation Space Requirements .................................................................................. 20

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4.5 Installing a Rear Panel..........................................................................................................23
4.6 Installing the Inverter ...........................................................................................................26
5. Electrical Connections............................................................................................................... 27
5.1 Connecting External Protection Ground (PGND) Cables....................................................27
5.1.1 Preparation.................................................................................................................... 27
5.1.2 Procedure of grounding................................................................................................ 28
5.2 Connecting AC Power Cables..............................................................................................29
5.2.1 Preparation.................................................................................................................... 29
5.2.2 Procedure of Connecting AC cables............................................................................. 30
5.3 Connecting the PV Strings ...................................................................................................31
5.3.1 Preparation.................................................................................................................... 32
5.3.2 Connecting DC input power cables Procedure............................................................. 34
5.4 Connecting Communications Cables ...................................................................................37
5.4.1 WIFI, GPRS and RS485 communications ................................................................... 37
5.4.2 Bluetooth Communication............................................................................................ 38
5.5 Installation Verification........................................................................................................39
6. Power on & Power off............................................................................................................... 39
6.1 Powering On the inverter .....................................................................................................40
6.2 Powering Off the inverter.....................................................................................................40
7. User Interface............................................................................................................................ 40
7.1 Checking inverter operation status.......................................................................................40
7.2 Viewing & setting data of inverter.......................................................................................41
7.3 Setting Standard Parameters.................................................................................................41
8. Maintenance .............................................................................................................................. 42
8.1 Routine Maintenance............................................................................................................42
8.2 Troubleshooting ...................................................................................................................43
8.3 Removing the Inverter..........................................................................................................45
9. Quality Guarantee...................................................................................................................... 45
9.1 Quality terms........................................................................................................................45
9.2 Liability waiver ....................................................................................................................46
10. The Inverter Disposal.............................................................................................................. 46
11. Technical Specifications.......................................................................................................... 47

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Forward
Dear User,
Thank you so much for your choosing the 1K/2K/2K5/3K/3K6-S1 PV Inverter Single
MPPT Route Input and 3K/3K6/4K/4K6/5K/6K-D1 PV Inverter Double MPPT Routes
Input, the latest generation of grid-tied PV Strings inverter (hereinafter referred to as the
inverter) designed and developed by Senergy!
This user manual describes the inverter in terms of its installation, electrical connections,
operation, commissioning, maintenance, and troubleshooting. Please read through the
manual carefully before installing and using the inverter, and keep the manual well for
future reference.
Application Model
Grid-tied PV string inverter
1K/2K/2K5/3K/3K6-S1 PV Inverter Single MPPT Route Input
3K/3K6/4K/4K6/5K/6K-D1 PV Inverter Double MPPT Routes Input
Intended Audience
This user manual is intended for photovoltaic (PV) inverter operating personnel and
qualified electrical technicians.
Notes:
This user manual is subject to continual update and revision (specific please in kind
prevail); the latest version of user manual and other more information about the product
are available from http://www.senergytec.com, and/or by consulting your dealer.
Symbol Conventions

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Safety symbols used in this manual, which highlight potential safety risks and important
safety information, are listed as follows:
Symbol
Description
DANGER
Indicates an imminently hazardous situation which, if not correctly
followed, will result in serious injury or death.
WARNING
Indicates a potentially hazardous situation which, if not correctly
followed, could result in serious injury or death.
CAUTION
Indicates a potentially hazardous situation which, if not correctly
followed, could result in moderate or minor injury.
NOTICE
Indicates a potentially hazardous situation which, if not correctly
followed, could result in equipment failure to run, or property damage.
Note
Calls attention to important information, best practices and tips:
supplement additional safety instructions for your better use of the PV
inverter to reduce the waste of your resource.
Refer to documentation (Remind operators to refer to the documentation
shipped with the inverter).
This inverter must be installed by the '' Australia local agent professional person who
authorized by manufacturer''.
This professional person should familiar with Australia relevant electrical regulations
to ensure all installation comply with Electromechanical regulations.

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1. Safety Precautions
Before beginning your journey, please read these safety precautions in the user manual
carefully.
1.1 Personnel Safety
a. The PV inverter must be installed, electronically connected, operated and maintained
through specially trained technician;
b. The qualified technician must be familiar with the safety regulations of electrical
system, working process of PV power generation system, and standards of local power
grid;
c. The technician must read through this user manual carefully and master it before any
operation.
1.2 The PV Inverter Protection
NOTICE
As soon as receiving the PV inverter, please check if it is damaged during
its transportation. If yes, please contact Senergy or your dealer
immediately.
a. Do not tamper with any warning signs on the inverter enclosure because these signs
contain important information about safe operation.
b. Do not remove or damage the nameplate on the inverter enclosure because it contains
important product information.
c. Do not remove the anti-dismantle label on the inverter enclosure because it is the basis
for product warranty.

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1.3 Installation Safety
NOTICE
Please read the user manual carefully before installing the PV inverter;
warranty or liability will be void from Senergy if damage is caused by
installation faults.
a. Ensure there is no electronical connections around ports of the PV inverter before
installing;
b. Adequate ventilation must be provided for inverter installation location. Mount the
inverter in vertical direction, and ensure that no object is put on the heat sink affecting the
cooling. (For details, refer to Chapter 4 Installation)
1.4 Electrical Connections
DANGER
Before installing the inverter, check all electrical ports to ensure no
damage and no short circuit. Otherwise personal casualty and/or fire
will occur.
a. Input terminals of the PV inverter apply only to PV String input; do not connect any
other DC source to the input terminals.
b. Before connecting PV modules, ensure that is its voltage is within the safe range; when
exposed to any sunlight, PV modules can generate high voltage.
c. All electrical connections must meet the electrical standards of the country or region.
d. Cables used in electrical connections must be well fixed, good insulation, and with
appropriate specification.
1.5 Operating and Commissioning
DANGER
While PV String operating, high voltage can lead to an electrical shock
hazard, and even cause personal casualties. Therefore, operate the PV
inverter strictly according to the safety precautions in the user manual.

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a. Before getting the permission of electrical power sector in the country/ region, the grid-
tied PV inverter cannot generate power.
b. Follow the procedures of commissioning described in the user manual when
commissioning the PV inverter.
c. Do not touch any other parts’ surface except the DC switch when the PV inverter is
operating; its partial parts will be extremely hot and can cause burns.
1.6 Maintenance
DANGER
Power OFF all electrical terminals before PV inverter maintenance; strictly
comply with the safety precautions in this document when operating the
inverter.
a. For personal safety, maintenance personnel must wear appropriate personal protective
equipment (like insulation gloves and protective shoes) for the inverter maintenance.
b. Place temporary warning signs or erect fences to prevent unauthorized access to the
maintenance site.
c. Follow the procedures of maintenance stipulated in the manual strictly.
d. Check the relevant safety and performance of the inverter; rectify any faults that may
compromise the inverter security performance before restarting the inverter.
1.7 Additional Information
NOTICE
To avoid any other unforeseen risk, contact Senergy immediately, if there is
any issue found during operation.

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2. Product Overview
This chapter introduces inverter and describes its functional model, network application,
appearance, dimensions, working process etc.
2.1 Functional Models
Function
The inverter is a single-phase grid-tied PV string inverter (transformer less) that converts
the DC power generated by PV strings into AC power and feeds the power into the power
grid.
WARNING
The inverter is transformerless inverter. Add an isolation transformer before
grounding the positive/ negative terminal of PV modules (like Thin Film
module) for operation.
WARNING
Do not connect PV modules in parallel to several PV inverters for operation.
Models
Figure 2.1 shows a model number of the 1K/2K/2.5K/3K/3.6K/3K/3.6K/4K/4.6K/5K/6K,
using 3K as an example.
Figure 2.1 Model number description

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2.2 Network Application
Grid-tied PV power systems
The inverter applies to grid-tied PV power systems for outdoor power stations. Typically,
a grid-tied PV power system consists of PV modules, grid-tied inverters (inverter), AC
distribution units (ACDUs), and low-voltage power grid, as shown in Figure 2.2.
Figure 2.2 Grid-tied PV power systems
2.3 Outline and Dimensions
2.3.1 Outline
Figures 2.3 to 2.6 show the outline of 1K/2K/2.5K/3K/3.6K/ 3K/3.6K/4K/4.6K/5K/6K
as follows:

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Figure 2.3 The Front view of 1K/2K/2.5K/3K/3.6K/ 3K/3.6K/4K/4.6K/5K/6K
The amplification effect of LED indicator area is shown in Figure 2.4.
Figure 2.4 The amplification effect of LED indicator
Figure 2.5 The Rear view of 1K/2K/2.5K/3K/3.6K/ 3K/3.6K/4K/4.6K/5K/6K

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Figure 2.6 The Bottom view of 1K/2K/2.5K/3K/3.6K/ 3K/3.6K/4K/4.6K/5K/6K
2.3.2 Dimensions
Figures 2.7 & 2.8 show the dimensions of 1K/2K/2.5K/3K/3.6K/
3K/3.6K/4K/4.6K/5K/6K as follows:
Figure 2.7 The dimension of 1K/2K/2.5K/3K/3.6K

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Figure 2.8 The dimensions of 3K/3.6K/4K/4.6K/5K/6K
2.4 Working Process
2.4.1 Basic principle Description
The 3K/3.6K/4K/4.6K/5K/6K receives inputs from two strings of PV panel
(1K/2K/2.5K/3K/3.6K receives inputs from only one sting of PV panel). Then the inputs
are grouped into two independent MPPT routes inside the inverter to track the maximum
power point of the PV panel. The two MPPT power is then converted into DC Bus, then
the DC power is converted to AC power through an inverter circuit. Finally the AC
power is fed to the Power grid. EMI filer is used on both the DC and AC sides to reduce
the electromagnetic inference; Surge protection is supported on AC side.
2.4.2 Circuit Diagrams
Figure 2.9 shows the circuit diagram for the 1K/2K/2.5K/3K/3.6K.
Figure 2.9 shows the circuit diagram for the 1K/2K/2.5K/3K/3.6K.

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Figure 2.10 shows the circuit diagram for the 3K/3.6K/4K/4.6K/5K/6K.
2.4.3 Working Modes
Three working modes of 1K/2K/2.5K/3K/3.6K/3K/3.6K/4K/4.6K/5K/6K are shown as
follows: standby, operating, and shutdown. Table 2.1 shows the conditions for the
1K/2K/3K/4K/5K/6K to switch between working modes.
Table 2.1 1K/2K/2.5K/3K/3.6K/3K/3.6K/4K/4.6K/5K/6K Working modes description
Modes
Description
Standby
The PV inverter enters the standby mode when
>the input voltage of PV Strings can enable auxiliary power supply to run, but
cannot meet the inverter operation requirements.
>the input voltage of PV Strings can meet the inverter operation requirements, but
cannot meet its minimum power requirements.
Operating
When the PV inverter is grid-tied and generates electricity, it
> tracks the maximum power point to maximize the PV String output.
> converts DC power from PV strings into AC power and feeds the power to the
power grid.
> enters the shutdown mode if detecting a fault or a shutdown command, and enters
the standby mode if detecting that the PV string output power does not meet the
requirements for grid-tied electricity generation.
Shutdown
The PV inverter switches from standby or operating mode to shutdown mode if

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detecting a fault or a shutdown command.
The inverter switches from shutdown mode to standby mode if receiving a
Startup command or detecting that a fault is rectified.
3. Storage
This chapter describes inverter storage requirements.
The following storage instructions apply if the PV inverter will not be deployed
immediately:
>Do not unpack the inverter (put desiccant in the original box if the PV inverter is
unpacked).
>Store the PV inverter at a temperature range of -40°C to +70°C and with the relative
humidity of 0% to 100% (no condensing).
>The PV inverter should be stored in a clean and dry place and be protected from dust
and water vapor corrosion.
> A maximum of eight layers of inverters can be stacked.
> Do not position the inverter at a front tilt, excessive back tilt, or side tilt, or upside
down.
> Conduct periodic inspection during storage. Replace the packing materials immediately
if any rodent bites are found.
>Ensure that qualified personnel inspect and test the inverter before use if it has been
stored for a long time.
4. Installation
DANGER
Do not install the PV inverter on flammable building materials.
Do not install the inverter in an area that stores flammable or explosive
materials.
CAUTION
Do not install the PV inverter in a place where personnel are likely to
come into contact with its enclosure and heat sinks to avoid electrical
shock/ burn.

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4.1 Checking the Outer Packing
>When receiving the goods, check that the packing materials are intact.
>After unpacking, check that the deliverables are complete, intact, and consistent with
your order list.
>Examine the PV inverter and its fittings for damage such as scraps and cracks.
NOTICE
If any such damage described above is found, contact the dealer immediately.
4.2 Moving 1K/2K/2.5K/3K/3.6K/ 3K/3.6K/4K/4.6K/5K/6K

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After checking the outer packing intact and complete, move the PV inverter to the
designated installation position horizontally. Hold the handles on both sides of the 3K/
5K, as shown in Figure 4.1.
Figure 4.1 Moving the inverter
CAUTION
>Do not place the PV inverter with its wiring terminals contacting the floor
because the power ports and signal ports at the bottom of the device are not
designed to support the weight of the inverter.
>When placing the inverter on the floor horizontally, put foam or paper under
to protect its enclosure.
4.3 Identify the PV inverter
4.3.1 Nameplate
After moving the PV inverter from packing box, identify it by reading its nameplate labeled on
the side. The nameplate contains important product information: the model information,
communications/ technical specifications, and compliance
4.3.2 Compliance and Safety Symbols

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Safety symbol
description
Electrical shock!
There are residual voltages in the PV inverter. It needs 5 minutes to
finish discharge.
The PV inverter must not be touched when in operation. Its enclosure
and heat sinks are extremely hot.
Electrical shock! The part charged. Only qualified and trained electrical
technicians are allowed to perform operations on the inverter.
Do not dispose the PV inverter with household garbage. Deal with the
inverter according to local regulations.
The PV inverter is compliant with CQC.
4.4 Determining the installation position
inverter applies to wall-mounting installation, as described below in detail.
4.4.1 Basic requirements
a. inverter is protected to IP65 and can be installed indoors or outdoors.
b. The installation method and position must be appropriate for the weight and
dimensions of inverter. For details, see Table 4.1.
Table 4.1 the weight and dimensions of 1K/2K/2.5K/3K/3.6K/3K/3.6K/4K/4.6K/5K/6K
Model
1K/2K/2.5K/3K/3.6K
3K/3.6K/4K/4.6K/5K/6K
Weight
9 kg
13 kg
Size (h*w*d)
285 mm *336 mm *125mm
335mm*426mm*125mm

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c. Do not install the inverter in a place where personnel are likely to come into contact
with its enclosure and heat sinks because these parts are extremely hot during operation.
d. Do not install the inverter in an area that stores flammable or explosive materials
4.4.2 Installation Environment Requirements
a. The ambient temperature must be below 50°C which ensures optimal operation of the
inverter and extends its service life.
b. The inverter must be installed in a well ventilated environment to ensure good heat
dissipation.
c. The inverter must be free from direct exposure to sunlight, rain, and snow to extend its
service life. It is recommended that the inverter be installed in a sheltered place. If no
shelter is available, build an awning, as shown in Figure 4.2.
Figure 4.2 Installation in a sheltered place (unit: mm)
4.4.3 Carrier Requirements
a. The carrier where the inverter is installed must be fire-proof. Do not install inverter on
flammable building materials.
b. The wall must be solid enough to bear the weight of the inverter.
c. Do not install inverter on a wall made of gypsum boards or similar materials with weak sound
insulation to avoid noise disturbance in a residential area.

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4.4.4 Installation Space Requirements
a. It is recommended that the inverter be installed at eye level to facilitate operation and
maintenance.
b. Reserve enough clearance around the inverter to ensure sufficient space for installation and
heat dissipation, as shown in Figure 4.3.
Figure 4.3 Installation Space Requirements for inverter (unit: mm)
c. When installing multiple inverter, install them along the same line (as shown in Figure 4.4) if
sufficient space is available, and install them in triangle mode (as shown in Figure 4.5) or in
stacked mode (as shown in Figure 4.6) if no sufficient space is available. The installation modes
ensure sufficient space for installation and heat dissipation.