CHNT Power CPS SCA-S Series User manual

Shanghai Chint Power Systems CO,.LTD
CPS SCA3/3.6/4/4.6/5/6KTL-SM
CPS SCA1/2/2.5/3/3.6KTL-S
A-S/SM Series
CPS SC Grid-tied PV Inverter
Installation and Operation Manual

Inverter
Contents
Application Model
Intended Audience
Symbol Conventions
1.1 Personnel Safety
1.2 The PV Inverter Protection
1.3 Installation Safety
1.4 Electrical Connections
1.5 Operating and Commissioning
1.6 Maintenance
1.7 Additional Information
2.1 Functional Models
2.2 Network Application
2.3 Outline and Dimensions
2.4 Working Process
2.5 Working Modes
2.1.1 Function
2.1.2 Model Description
2.3.1 Outline
2.4.1 Basic principle Description
2.4.2 Circuit Diagrams
2.2.1 Grid-tied PV Power Systems
4.1 Checking the Outer Packing
4.2 Moving the
4.3 Identify the PV Inverter
4.3.1 Nameplate
3. Storage
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Forward
1 Safety Precautions
2 Overview of the Inverter
3 Storage
4 Installation
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5.1 Connecting Protection Ground (PGND) Cables
5.2 Connecting AC Output Cables
5.3 Connecting the PV Strings
5.4 Connecting Communications Cables
5.5 Installation Verification
5.1.1 Preparation
5.1.2 Wiring Procedures
5.4.1 Communications Mode Description
5.3.1 Preparation
5.2.1 Preparation
5.2.2 Procedure of Connecting AC Cables
6.1 Powering ON the Inverter
6.2 Powering OFF the Inverter
7.1 LED Indicator
10 Disposal of the Inverter
11 Technical Specifications
8.1 Routine Maintenance
8.2 The Inverter Troubleshooting
8.3 Removing the Inverter
9.1 Quality Terms
9.2 Liability Waiver
4.5 Installing a Rear Panel
4.6 Installing the Inverter
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4.4.1 Determining the Installation Position
4.4.2 Installation Mode Requirements
4.4 Installation Requirements
4.3.2 Compliance and Safety Symbols 14
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5 Electrical Connections
6 System Operation
7 User Interface
8 Maintenance
9 Quality Guarantee
10 Disposal of the Inverter
11 Technical Specifications
7. App ChintHome 34
CPS SCA-S/SM Series Inverter

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Dear User,
Thank you so much for your choosing 1K-6K, the latest generation of grid-tied PV Strings
inverter (hereinafter referred to as the inverter) designed and developed by CHINT.
This user manual introduces 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.
Grid-tied PV string inverter
This user manual is intended for photovoltaic (PV) inverter operating personnel and qualified
electrical technicians.
This user manual is subject to change (specific please in kind prevail) without prior notice.
The latest version of user manual and other more information about the product are
available from http://www.chintpower.com/en, and/or by consulting your dealer.
Notes:
CPS SCA1/2/2.5/3/3.6KTL-S
CPS SCA3/3.6/4/4.6/5/6KTL-SM
Application Model
Intended Audience
Forward
CPS SCA-S/SM Series Inverter

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Indicates an imminently hazardous situation which, if not correctly
followed, will result in serious injury or death.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in serious injury or death.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in moderate or minor injury.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in equipment failure to run, or property damage.
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).
Safety symbols used in this manual, which highlight potential safety risks and important safety
information, are listed as follows:
Symbol Description
WARNING
CAUTION
DANGER
NOTICE
NOTE
Symbol Conventions
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Before beginning your journey, please read these safety precautions in User Manual carefully.
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.
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’s enclosure because it contains
important product information.
c. Do not remove the anti-dismantle label on the inverter’s enclosure because it is the basis for
product warranty.
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)
As soon as receiving the PV inverter, please check if it is damaged
during its transportation. If yes, please contact your dealer immediately.
Please read the User Manual carefully before installing the PV inverter;
warranty or liability will be void from CHINT if damage is caused by
installation faults.
NOTICE
NOTICE
1.1 Personnel Safety
1 Safety Precautions
1.2 The PV Inverter Protection
1.3 Installation Safety
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a. Input terminals of the PV inverter apply only to input terminals of PV String; 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.
a. Before getting the permission of electrical power sector in the country / region, the grid-tied
PV inverter cannot start 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.
Before installing the inverter, check all electrical ports to ensure no
damage and no short circuit. Otherwise personal casualty and/or fire
will occur.
While the inverter 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.
Power OFF all electrical terminals before the inverter maintenance;
strictly comply with the safety precautions in this document when
operating the inverter.
DANGER
DANGER
DANGER
1.4 Electrical Connections
1.5 Operating and Commissioning
1.6 Maintenance
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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.
To avoid any other unforeseeable risk, contact immediately, if CHINT
there is any issue found during operation.
NOTICE
1.7 Additional Information
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This chapter introduces the inverter and describes its functional model, network application,
appearance, dimensions, and working process etc.
2.1.1 Function
This series 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 power grid.
2.1.2 Model Description
Figure 2.1 shows a model number of the inverter, using xK as an example.
Figure 2.1 Model number descriptions
2.2.1 Grid-tied PV Power Systems
The series 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, AC distribution units, and low-voltage
power grid, as shown in Figure 2.2.
The inverter is transformerless. Add an isolation transformer before
grounding the positive/ negative terminal of PV modules (like Thin
Film module) for operation.
Do not connect PV modules in parallel to several PV inverters for
operation.
WARNING
WARNING
2.1 Functional Models
2 Overview of the Inverter
2.2 Network Application
CPS SCA xK TL -S/SM
Product series
Transformerless
S-Single MPPT,SM-2MPPT
Chint power systems
Rated AC output power
CPS SCA-S/SM Series Inverter

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2.3.1 Outline
Figures 2.3 to 2.7 show the outline of the inverters as follows:
Figure 2.2 Grid-tied PV system
PV strings inverter AC Distribution Unit low-voltage power grid
Figure2.4 3K-6K PV Inverter with Double MPPT Input (unit: mm)
Figure2.3 1K-3.6K PV Inverter with Single MPPT Input (unit: mm)
2.3 Outline and Dimensions
285
336
125
333.8
424.8
125
CPS SCA-S/SM Series Inverter

External protection ground interface
strings
AC output connector
8
Figure 2.7 The bottom view of this series inverter
1. Vent valve
2. DC isolation breaker
3. PV terminal
4.
5. Communications interface
6.
Figure 2.5 The front view and amplification effect of LED indicator area
1. Runing Indicator
2. COM Indicator
3. Fault Indicator
1K-3.6K PV Inverter with Single MPPT Input 3K-6K PV Inverter with Double MPPT Input
Figure 2.6 The rear view of this series inverter
123
CPS SCA-S/SM Series Inverter

err w h sV i
PV i
2.4.1 Basic principle Description
2.4.2 Circuit Diagrams
The 3K-6 nverter with 2 MPPT input receives inputs from two strings of PV panel
(1K-3.6K P nve t it ingle MPPT input 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.
Figure 2.8 shows the circuit diagram for the 1K-3.6K PV Inverter with Single MPPT Input:
Figure 2.9 shows the circuit diagram for the 3K-6K Inverter with 2 MPPT Input:
Figure 2.8 circuit diagram
Figure 2.9 circuit diagram
DC
EMI
Filter
1
MPPT
Route
Inverter circuit
AC EMI Filter
Relay
L
N
PE
AC surge
protector
PV DC
Switch
DC
EMI
Filter
1
MPPT
Route1
Inverter circuit
AC EMI Filter
PV DC
Switch
Relay
L
N
PE
MPPT
Route2
AC surge
protector
DC
EMI
Filter
2
9
2.4 Working Process
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startup
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Table 2.1 Working modes description
Three working modes of the inverter are shown as follows: standby, operating, and shutdown.
Table 2.1 shows the conditions for the inverter to switch between working modes.
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 to-start requirements,but cannot meet its minimum power
requirements.
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.
The PV inverter will enter to the shutdown mode if detecting a fault or a
shutdown command.
Modes
Standby
Operating
Description
The PV inverter switches from standby or operating mode to shutdown
mode if detecting a fault or a shutdown command.
The inverter switches from shutdown mode to standby mode if receiving
a command or detecting that a fault is rectified.
Shutdown
2.5 Working Modes
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This chapter describes the storage requirements for the inverter.
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℃ to +70℃ 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.
3 Storage
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a. When receiving the inverter, check that the packing materials are intact.
b. After unpacking, check that the deliverables are complete, intact, and consistent with your
order list.
c. Examine the PV inverter and its fittings for damage such as scraps and cracks.
Do not install the inverter on flammable building materials or in an
area that stores flammable or explosive materials.
Do not install the inverter in a place where personnel are likely to
come into contact with its enclosure and heat sinks to avoid electrical
shock / burn.
Figures 4.1 The deliverables: The inverter and its fittings
The deliverables in the fittings of inverter
CAUTION
DANGER
The inverter
Items Deliverables
Bolt group
(reserved for tighteningthe support and rear panel)
Screw
File package
Rear panel
A
F
E
D
C
B
DC terminal connector group
4 Installation
4.1 Checking the outer packing
G
GAC termimal
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horizontally. Hold the handles on both sides of the inverter, as shown in Figure 4.2.
Figure 4.2 Moving the inverter
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.
4.3.1 Nameplate
After moving the PV inverter from packing box, identify it by reading its nameplate labeled on
the side of the inverter. The nameplate contains important product information: the model
information, communications/ technical specifications, and compliance symbols.
CAUTION
If any damage mentioned above is found, contact the dealer
immediately.
After checking the outer packing, move the PV inverter to the designated installation position
NOTICE
4.2 Moving the inverter
4.3 Identify the PV Inverter
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4.3.2 Compliance and Safety Symbols
Electrical shock!
There are residual voltages in the PV inverter. It needs 10 minutes
to finish discharge.
10mins
The PV inverter must not be touched when in operation. Its
enclosure and heat sinks are extremely hot.
Electrical shock! This part is charged. Only qualified and / or trained
electrical technicians are allowed to perform operations on the inverter.
If the inverter service life has expired, dispose it in accordance with
local rules for disposal of electrical equipment waste. Do not dispose
the PV inverter with household garbage.
The PV inverter is compliant with TUV.
Safety symbol Description
Applies to wall-mounting installation, as described below in detail.
a. The 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
the inverter.
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.
a. The ambient temperature must be below 50℃ which ensures the inverter’s optimal
operation and extends its service life.
4.4.1 Determining the Installation Position
4.4 Installation Requirements
Basic Requirements
Installation Environment Requirements
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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 4.3.
Figure 4.3 Installation environment with awning (unit: mm)
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 4.4.
a. The carrier where the inverter is installed must be fire-proof. Do not install the inverter on
flammable building materials.
b. The wall must be solid enough to bear the weight of the inverter.
c. Do not install the inverter on a wall made of gypsum boards or similar materials with weak
sound insulation to avoid noise disturbance in a residential area.
The front view
Awning
The lateral view
≥500
≥1000
Carrier Requirements
Installation Space Requirements
CPS SCA-S/SM Series Inverter

The front view The lateral view
Figure 4.4 Installation Space Requirements (unit: mm)
c. When installing multiple inverter, install them along the same line (as shown in Figure 4.5) if
sufficient space is available, and install them in triangle mode (as shown in Figure 4.6) or in
stacked mode (as shown in Figure 4.7) if no sufficient space is available. The installation
modes ensure sufficient space for installation and heat dissipation.
Figure 4.5 Installation along the same line (unit: mm)
16
>500
>500
>200 >200
>600
200 200
CPS SCA-S/SM Series Inverter

Figure 4.6 Installation in triangle mode (unit: mm)
Figure 4.7 Installation in stacked mode (unit: mm)
The clearance between multiple inverters must be increased to
ensure proper heat dissipation when they are installed in a hot area.
NOTICE
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300
100
1000
200
CPS SCA-S/SM Series Inverter