KStar KAC50DP User manual

KAC50DP Industrial and Commercial
Power Conversion System
User Manual
Shenzhen Kstar New Energy Co., Ltd.
V1.0

1
Contents
1About This Manual ............................................................................................................ 1
1.1 Introduction ...................................................................................................................1
1.2 Applicable Products .......................................................................................................1
1.3 Naming Rules of Product Models...................................................................................1
1.4 Manual Description........................................................................................................1
1.5 Description of Signs........................................................................................................2
2Safety Instructions............................................................................................................. 2
2.1 Personnel Requirements................................................................................................3
2.2 Safety Warning Operation .............................................................................................3
2.3 Protection of Symbols on Equipment Body ...................................................................3
2.4 Matters on Electricity Safety..........................................................................................3
2.5 Requirements of Environmental Space..........................................................................4
2.6 Specification of Live Test................................................................................................4
2.7 Parameters Setting.........................................................................................................5
2.8 Maintenance or Overhaul Specifications.......................................................................5
2.9 Product Scrapping..........................................................................................................5
2.10 Other Precautions ........................................................................................................6
3 Product Introductions............................................................................................................. 7
3.1Power Conversion System ..............................................................................................7
3.2 Product Appearance.......................................................................................................8
3.3Main Power Topology.....................................................................................................9
3.4 Product Features............................................................................................................9
3.5 Communication Scheme ................................................................................................9
4 PCS Modes and Functions .................................................................................................... 11
4.1Mode Introduction........................................................................................................11
4.2 PCS Functions...............................................................................................................12
4.3 Introduction to PCS States ...........................................................................................13
5Guide for Mechanical Installation ......................................................................................... 14
5.1Precautions before Installation.....................................................................................14
5.2 Installation Process ......................................................................................................14
5.3 Preparation for Installation..........................................................................................15
5.4 Machine Transportation ..............................................................................................16
5.5 Positioning and Fixing ..................................................................................................17

5.6 Air Duct Design and Installation...................................................................................19
6Electrical Installation Instructions ......................................................................................... 20
6.1 Cable Requirements.....................................................................................................20
6.2 Wiring Specifications....................................................................................................20
6.3 Fixing and Protection of Connecting Cables ................................................................21
6.4 DC Side Wiring..............................................................................................................23
6.5 AC Side Wiring..............................................................................................................24
6.6 Communication interface ............................................................................................25
6.7 System Grounding........................................................................................................26
6.8 Installation Complete...................................................................................................26
7Commissioning ................................................................................................................ 27
7.1 Check before Starting...................................................................................................27
7.2 Power on/off operation process..................................................................................28
7.3 Fault shutdown operation process ..............................................................................28
8 Maintenance and Troubleshooting...................................................................................... 28
8.1 Description...................................................................................................................30
8.2 Precautions ..................................................................................................................30
8.3 Troubleshooting...........................................................................................................32
Appendix 1: Technical Parameters.......................................................................................... 36
Appendix 2: Quality Assurance................................................................................................ 38

About This Manual
1
1About This Manual
1.1 Introduction
Dear user, thank you very much for using the power conversion system developed and
produced by Shenzhen Kstar New Energy Co., Ltd. We sincerely hope that this product can
meet your needs. We also look forward to your valuable opinions on the performance and
functions of this product. We will continue to improve.
1.2 Applicable Products
This manual is suitable for the industrial and commercial power conversion system of
Shenzhen Kstar New Energy Co., Ltd.: KAC50DP
※Unless otherwise specified, all references to “PCS” and “power conversion system” in this manual refer
to this series of products.
1.3 Naming Rules of Product Models
Field 1
Field 2
Field 3
Field 4
Field 5
Field 6
System
model
K
A
C
50
D
P
KAC50DP
KSTAR
AC
Converter
Power
Outdoor
PV
1.4 Manual Description
This Manual is a special instruction manual for the KAC50DP seriesprovided by Shenzhen
Kstar New Energy Co., Ltd. The Manual introduces product-related information,
installation instructions, operation, maintenance, and troubleshooting in detail. Before
installing and commissioning the equipment, please read and understand all the
instructions contained in this Manual, and be familiar with the relevant safety symbols.
Readers need to have certain knowledge in electrical theory, electrical wiring and
equipment. Please read this Manual carefully before installing this product, and ensure
that the relevant personnel can easily obtain and use it.
The content, pictures, logos and symbols used in this Manual are owned by Shenzhen
Kstar New Energy Co., Ltd. It is prohibited to publicly reproduce all or part of the content
without written authorization of Kstar.

About This Manual
2
1.5 Description of Signs
In order to ensure the personal and property safety of users when using this product, and
make better use of this product, relevant information is provided in the Manual and
highlighted with appropriate symbols.
Below list the symbols that may be used in this Manual. Please read it carefully.
Danger
Indicate a situation that has a high degree of potential hazard, which will result in death or
serious injury if not avoided.
Warning
Indicate that there is a moderate potential hazard, which may cause death or serious injury
if not avoided.
Caution
Indicate that there is a low-level potential hazard, which may cause moderate or light injury
to personnel if not avoided.
Attention
Indicate that there is a potential risk, which may cause the equipment to fail to operate
normally or report a failure if not avoided.
“Description” emphasizes and supplements the content and may also provide techniques for optimizing
the use of the product.
Please always pay attention to the hazard warning symbols on the equipment. The symbols
include:
Symbol
Description
This symbol indicates that the equipment contains high voltage inside and touching it may
cause electric shock.
This symbol indicates that the temperature here is higher than the acceptable range for
the human body. Do not touch it in order to avoid personal injury.
This symbol indicates the protective ground (PE) terminal, which needs to be firmly
grounded to ensure the safety of the operator.

Safety Instructions
3
2Safety Instructions
2.1 Personnel Requirements
Only professional electricians or qualified personnel are allowed to perform operations
on this product.
The operators should be fully familiar with the structure and working principle of the
whole power conversion system.
The operators should be fully familiar with this User Manual of KAC50DP Power
Conversion System.
The operators should be fully familiar with the relevant standards of the country/region
where the project is located.
Warning
It is strictly forbidden to perform maintenance or overhaul operations when the
equipment is live!
When maintaining or overhauling the equipment, at least two operators must be on
site. The maintenance or overhaul operations can be performed only when the
equipment has been safely disconnected and the power conversion system has
discharged after 10 minutes.
2.2 Safety Warning Operation
During the installation, daily maintenance and overhaul of the power conversion system,
abide by the following in order to prevent unrelated personnel from approaching and causing
misoperation or accidents:
Set up conspicuous signs at the front and rear switches of the power conversion system
to prevent accidental switching.
Set up warning signs or safety warning belts near the operation area.
After maintenance or overhaul, be sure to lock the upper cover.
2.3 Protection of Symbols on Equipment Body
The warning symbols on the power conversion system contain important information
for safe operation of the power conversion system. Man-made tearing or damage is
strictly prohibited!
A nameplate is installed inside the front door of the power conversion system. The
nameplate contains important parameters of the product. Man-made tearing or damage
is strictly prohibited!
If any symbol is damaged or blurred, please contact Shenzhen Kstar New Energy Co., Ltd.
Attention
Please ensure that the symbols on equipment body are clear and readable at all times.
Once any symbol is damaged or blurred, it must be replaced immediately.

Safety Instructions
4
2.4 Matters on Electricity Safety
2.4.1 Electrical safety
Danger
Please ensure that the equipment is well grounded before use!
Danger
There is a lethal high voltage inside the product!
Do not touch the terminals or conductors connected to the grid circuit.
Pay attention to all instructions or safety documents about connecting to the power
grid, and follow the warning symbols on the product.
Observe the safety precautions listed in this Manual and other related documents of
this equipment.
Danger
Damaged equipment or system failure may cause electric shock!
Before operation, visually inspect the equipment for damage or other hazards.
Check whether other external equipment or circuit connections are safe.
Confirm that the equipment is in safe state before operation.
2.4.2 Electrostatic safety
Attention
Electrostatic sensitive components on the circuit board or elsewhere may be damaged due
to improper operation or contact by the operator.
Operators are required to avoid unnecessary contact with the circuit board.
Operators are required to comply with electrostatic protection regulations, such as
wearing ESD wristband.
2.5 Requirements of Environmental Space
2.5.1 Escape passage requirements
To ensure that the operator can quickly evacuate the scene in the event of an accident, please
observe the following:
Do not place flammable or explosive materials around the power conversion system.
It is strictly forbidden to stack debris in the escape passage or occupy the escape passage
in any form.
2.5.2 Moisture protection
Do not open the cover in high humidity or rainy days!

Safety Instructions
User Manual of KAC50DP Power Conversion System
5
2.6 Specification of Live Test
2.6.1Live measurement
Danger
There is high voltage in the equipment. Accidental contact may cause fatal electric shock.
Therefore, during live measurement, be sure to:
Take proper protection (such as wearing insulating gloves, insulating shoes, etc.).
At least two operators must be on site to ensure personal safety.
2.6.2 Use of measuring equipment
In order to ensure that the electrical parameters meet the requirements, it is necessary to
use related electrical measurement equipment when performing electrical connection and
trial operation of the power conversion system.
Warning
Select high-quality measuring equipment that meets the requirements of the site,
such as range and applicable conditions.
Ensure that the connection and use of the measuring equipment are correct and
standardized to avoid arcing and other dangers.
2.7 Parameters Setting
The parameters are closely related to the operation of the power conversion system. The
operating conditions of the system and the power conversion system must be reliably
analyzed and evaluated before these parameters can be modified. The specific parameters
are set in the background (PC or EMS).
Warning
Inappropriate parameter settings may affect the normal function of the power
conversion system!
Only authorized professionals can set the parameters of the power conversion system.
2.8 Maintenance or Overhaul Specifications
Pay attention to the following points when performing maintenance or overhaul operations
on the equipment:
Ensure that the power conversion system will not be re-powered accidentally.
Use a multimeter to ensure that the internal discharge of the power conversion system
has been completed.
Ensure that the equipment is properly grounded.
Live parts must be insulated and covered with insulating materials.
The upper cover can be opened for maintenance or overhaul of the power conversion
system after at least 10 minutes when the power conversion system has been shut down
and the AC-DC power supply has been disconnected.
During the entire process of maintenance and overhaul, it is necessary to ensure that
the escape passage is completely unblocked.

Safety Instructions
6
2.9 Product Scrapping
When the power conversion system needs to be discarded, it mustn’t be treated as
conventional waste.
Please contact the local authorized professional recycling agency.
2.10 Other Precautions
The actual operation summary should be based on site needs, and the following protective
or emergency measures should be taken:
When performing equipment maintenance, overhaul and other operations, relevant
personnel should take appropriate protective measures as needed, such as wearing
noise-proof earplugs, insulating shoes and anti-scald gloves.
The installation location of the power conversion system is usually far away from the
urban area. Corresponding emergency rescue facilities should be prepared for
implementation when needed.
Take all necessary auxiliary measures to ensure the safety of personnel and equipment.
Attention
All operations on the power conversion system must comply with the relevant standards of
the country/region where it is located.
All descriptions in this Manual are for the power conversion system with standard configuration. If you
have special needs, please explain to the staff of Shenzhen Kstar New Energy Co., Ltd. when ordering.
Please refer to the actual product you received for details.
This Manual can’t cover all possible situations in the process of operation, maintenance, and inspection.
If you have any question, please contact Shenzhen Kstar New Energy Co., Ltd. in time.