KStar KAC50DP User Manual

Industrial and commercial power conversion system

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料号: 4257-0278

最初使用机种：KAC50DP

说明：

电气规格

1.构件描述变更 2.规格书变更升级

6.4.3 和图 6-4 更改内容

ECN 号为：PD24011120

1.构件描述变更 2.规格书变更升级

6-1 增加： The three-phase AC external switch is recommended

to use a switch with rated current ≥125A and rated voltage ≥

400V ac

ECN 号为：PD24040818

制作人：林艳萍

注；在规格书里应尽量避免出现供应商的信息；

材料规格、尺寸等附页放在首页后；

变更需把变更记录写上，并写上 ECN 编号；

零件规格书

物料描述: 用户手册 KAC50DP 285*210mm 157g 铜版纸+80g 书纸英文

KSTAR C 版 RoHS (并离网)

结构尺寸

辅料类 █其他

变更记录

RoHS 属性：█RoHS

版本

修改人

林艳萍

审核人：张新谱

第 1 页共

非 RoHS

审核人

日期

张新谱

2024/01/11

张新谱

2024/03/11

页

Table of Contents

Troubleshooting

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Summary of Contents for KStar KAC50DP

Page 1 零件规格书第 1 页共页料号: 4257-0278 物料描述: 用户手册 KAC50DP 285*210mm 157g 铜版纸+80g 书纸英文 KSTAR C 版 RoHS (并离网) 最初使用机种：KAC50DP RoHS 属性：█RoHS 非 RoHS 说明：电气规格结构尺寸辅料类 █其他变更记录版本修改人审核人日期...
Page 2 KAC50DP Industrial and Commercial Power Conversion System User Manual Shenzhen Kstar New Energy Co., Ltd. V1.0...
Page 4: Table Of Contents
Contents About 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 Safety Instructions..................... 3 2.1 Personnel Requirements..................3 2.2 Safety Warning Operation..................
Page 5 5.6 Air Duct Design and Installation................21 6 Electrical Installation Instructions ..................22 6.1 Cable Requirements .....................22 6.2 Wiring Specifications ....................23 6.3 Fixing and Protection of Connecting Cables............23 6.4 DC Side Wiring .....................25 6.5 AC Side Wiring......................27 6.6 Communication interface..................29 6.7 System Grounding ....................30 6.8 Installation Complete ...................30 Commissioning......................
Page 6: About This Manual
 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...
Page 7: Description Of Signs
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 s eri ous injury i f not avoided.
Page 8: Safety Instructions
Man-made tearing or damage is strictly prohibited!  If any symbol is damaged or blurred, please contact Shenzhen Kstar New Energy Co. , Ltd. Attention  Pl ease ensure that the s ymbols on equipment body a re cl ear a nd readable a t all times.
Page 9: Matters On Electricity Safety
2.4 Matters on Electricity Safety 2.4.1 Electrical safety Danger Pl ease 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 gri d ci rcuit. ...
Page 10: Specification Of Live Test
User Manual of KAC50DP Power Conversion System 2.6 Specification of Live Test 2.6.1 Live measurement Danger There is high voltage in the equipment. Accidental contact may ca use fatal electric shock. Therefore, during live measurement, be s ure to: ...
Page 11: Product Scrapping
Al l descriptions in this Ma nual are for the power conversion s ystem with standard configuration. If you ha ve s pecial needs, please explain to the s taff of Shenzhen Kstar New Energy Co., Ltd. when ordering. Pl ease refer to the a ctual product you received for details.
Page 12: Product Introductions
Product Introductions 3.1Power Conversion System On the power generation side, Power Conversion System (PCS) can effectively connect renewable energy power generation such as solar power and wind power to the power grid; on the transmission side, it can respond to the power grid and achieve peak and frequency modulation, and peak load shifting to coordinate with grid dispatch and stabilize the frequency of the power grid;...
Page 13: Product Appearance
3.2 Product Appearance The appearance of the power conversion system and the introduction of external components are shown in the following figures: Figure 3-1 Front view of KAC50DP Figure 3-2 Bottom view of KAC50DP Guide for Mechanical Installation...
Page 14: Main Power Topology
Figure 3-3 KAC50DP main circuit topology 3.4 Product Features KAC50DP power conversion system adopts advanced digital control technology to optimize control performance and improve system reliability. It is suitable for different battery charging and discharging needs and the main performance features are as follows: ...
Page 15: Communication Scheme
3.5 Communication Scheme 3.5.1 Background communication scheme The PCS communicates with the EMS through RS485, and the EMS communicates with the PC through Ethernet, and it is monitored by self-designed ESS monitoring software. Ethernet Figure 3-4 PC monitoring via Ethernet 3.5.2 EMS communication scheme Through the RS485 communication line, the PCS can communicate with the EMS, and it can be monitored in real time by self-designed ESS monitoring software.
Page 16: Pcs Modes And Functions
User Manual of KAC50DP Power Conversion System PCS Modes and Functions 4.1Mode Introduction 4.1.1 On-grid mode and off-grid mode Figure 4-1 System block diagram On-grid mode: connected to the public grid, following the grid voltage amplitude/phase and frequency, with island protection.
Page 17: Pcs Functions
 Charge and discharge control of energy storage battery All KAC50DP models can be charged and discharged in on-grid mode. The depth of charging and charging can be set by the user. 4.2.3 Cooling system start The cooling system will automatically start when the PCS reaches a certain power or the temperature reaches a threshold, and the speed will be adjusted steplessly.
Page 18: Introduction To Pcs States
User Manual of KAC50DP Power Conversion System 4.3 Introduction to PCS States The PCS has 5 states in total, as shown in Table 4-1 below: Table 4-1 State and Description LED status State Description When the DC side switch is turned on, the DC side of...
Page 19: Guide For Mechanical Installation
Safety signs “Work in progress! Do not switch on!” must be set up at all upstream switches. 5.2 Installation Process The installation process of KAC50DP power conversion system is as follows: Sta rt Prepa ra ti on before i ns ta l l a ti on...
Page 20: Preparation For Installation
5.3.1 Packaging inspection Check whether the equipment is damaged before installation. If any transportation damage is found, please contact the transportation company or Shenzhen Kstar New Energy Co., Ltd. and provide a photo of the damage. 5.3.2 Checking delivery list...
Page 21 5.3.3 Check the parts list When the converter is shipped separately, the following optional parts are not included. If the customer needs it, it must be placed separately. note: does not include wire. Battery terminal PV positive terminal PV negative terminal COM terminal Figure 5-1 Option icon Table 5-2 Accessories list Quantity...
Page 22: Machine Transportation
User Manual of KAC50DP Power Conversion System Screwdriver 1 set Sleeve 1 set Multimeter 1 set Inner hexagon spanner 1 pcs PV wrench 1 pcs Screws, nuts, washers Several 5.3.5 Requirements of installation environment Please confirm the following environment requirements before installing the power...
Page 23: Positioning And Fixing
Table 5-5 Description of Symbols on the Package Symbol Description Keep the front side up. Do not place the PCS horizontally, i ncl ined or upside down. Ha ndle wi th ca re to a voi d da mage to the power convers ion s ystem due to excessive collision and friction i n the tra nsportation environment.
Page 24 User Manual of KAC50DP Power Conversion System Figure 5-5 Requirements installation space 5.5.2 Model dimensions The mechanical dimensions of the KAC50DP power conversion system are shown in the figure below. Users can design and install according to this data. Figure 5-6 Dimensions of KAC50DP model 5.5.3 Hanger installation...
Page 25 bottom of the foundation. There are fixing holes at the bottom of the power conversion system, which are used to fix the system on the bottom supporting channel steel or on the ground. As shown below: Figure 5-7 Hanger installation and fixation Guide for Mechanical Installation...
Page 26: Air Duct Design And Installation
5.6.1 Forced air cooling system KAC50DP power conversion system use forced air cooling for heat dissipation. 5.6.2 Ventilation environment In order to meet the ventilation requirements of the KAC50DP power conversion system, the installation environment must meet the following requirements: ...
Page 27: Electrical Installation Instructions
6A, and the connecting wires on the same side shou ld be of the same specification and type. Kstar has given the reference requirements of various interface cables. Users can refer to the design related cables according to the table below.
Page 28: Wiring Specifications
User Manual of KAC50DP Power Conversion System 6.2 Wiring Specifications When laying cables, communication wires and power wires must be laid separately. The DC loop and AC loop need to be laid separately, and the distance between different cables must be greater than 30mm.
Page 29 Grounding: 6.3.2 Cable protection Cable protection includes communication cables and power cables. The protection methods are as follows: Protection of communication cables: The communication cables may be torn off or fall off from the wiring terminal easily during construction as they are thin. It is recommended to connect the power circuit first.
Page 30: Dc Side Wiring
A total of 3 MPPTs, the MPPT voltage access range is 350V~1000V, and the max DC current of each MPPT is 36A. The max PV input power of a single KAC50DP power conversion system is 75KW. Please refer to Section 6.5 for the location of the wiring ports.
Page 31 6.4.3 Bus voltage output interface KAC50DP is equipped with a bus voltage output interface, which is connected to the positive and negative bus inside the machine, the voltage is 350V~820V DC, there are 4A fuses to do protection. When the machine is turned on, the output voltage of the interface can supply voltage to the auxiliary power supply of devices such as STS.
Page 32: Ac Side Wiring
User Manual of KAC50DP Power Conversion System 6.5 AC Side Wiring 6.5.1 AC connection All models of KAC50DP power conversion systems have grid connection. Only the models with bypass need to consider bypass connection. The correspondences are shown in the tables below.
Page 33 6.5.2 Steps for AC side wiring: Step 1: Use a multimeter to measure and confirm whether all terminals have been powered off. Step 2: Confirm the phase sequence of the cables and make the wire labels. The AC output 3-phase cables L1, L2, L3, N, and PE should be added with yellow, green, red, black/blue, yellow-green cables respectively to distinguish the phase sequence.
Page 34: Communication Interface
User Manual of KAC50DP Power Conversion System 6.6 Communication interface 6.6.1 KAC50DP has two external communication interfaces, PARA1 and PARA2 are used for hand-in-hand communication between two or more PCS when they are combined. The parallel interface is in parallel, the foot position is the same, and the foot network is shown...
Page 35: System Grounding
Receive BMS 6.7 System Grounding The case of KAC50DP power conversion system needs to be reliably connected with a grounding cable. The resistance must not be higher than 4Ω, and the diameter of the grounding cable shouldn’t be less than 16mm .
Page 36: Commissioning
Commissioning 7.1 Check before Starting Before commissioning, thoroughly check the installation of the equipment, especially whether the DC and AC terminal voltage meets the requirements of the power conversion system and whether the polarity and phase sequence are correct. Check whether all connections have met the requirements of relevant standards and whether the system is properly grounded.
Page 37: Power On/Off Operation Process
Step 4: Check other content After completing the above-mentioned inspection, you need to carefully check the following items to ensure that they are correct.  All connections are made according to the contents of Chapter 6 of this manual.  The switches on AC side and DC side are disconnected, that is, in “OFF”...
Page 38: Maintenance And Troubleshooting
If a malfunction still can’t be solved with the help of this manual, please contact Shenzhen Kstar New Energy Co., Ltd. and provide the following information so that we can provide you with better services: ...
Page 39 Warning If onl y the s witch i s disconnected, the ca ble connection terminals inside the power convers ion s ystem are s till live! Before opening the machine cover a nd s tarting the formal maintenance work, not only the s wi tch, but also the front a nd rear ci rcuit breakers of the power conversion s ystem must be di s connected.
Page 40: Troubleshooting
If it is necessary to replace products of other manufacturers or different models of the same manufacturer, it must be analyzed and confirmed by Kstar in advance, or else Kstar shall not be liable for any casualties or property losses that may be caused thereby.
Page 41 Fault type Treatment method Di s connect the DC s witch a nd check the DC s i de vol tage and the Low ba ttery vol tage confi guration of the energy s torage battery Di s connect the DC s witch a nd check the DC s i de vol tage and the Hi gh battery vol tage confi guration of the energy s torage battery Ba ttery reverse connection...
Page 42 User Manual of KAC50DP Power Conversion System Table 8-3 PCS Alarm and Protection Functions Function Description When the DC vol tage of the energy s torage battery exceeds the a llowable voltage DC over/under ra nge, the power conversion system will stop working, and display the fault type vol ta ge protection on the PC or EMS.
Page 43 When the power conversion system detects that the difference between the three- AC vol ta ge unbalance pha se AC voltages exceeds the allowable ra nge, it will stop working, and display the protecti on fa ult type on the PC or EMS. The power conversion s ystem can quickly detect the a bnormal voltage and react.
Page 44: Appendix 1: Technical Parameters
Appendix 1: Technical Parameters Model KAC50DP PV i nput parameters Ma x. i nput voltage 1000V d.c. MPPT vol ta ge ra nge 350~800V d.c. MPPT vol ta ge ra nge (full load) 667V d.c. Ma xi mum continuous PV i nput power 75kW No.
Page 45 Power gri d monitoring AC l ea kage current detection General parameters Di mensions (W x H x D) 650*715*325mm Wei ght 75kg Is olation mode Non-i solated type Protecti on gra de IP65 Overvol ta ge l evel (DC) OVC II Overvol ta ge l evel (AC) OVC III...
Page 46: Appendix 2: Quality Assurance
Appendix 2: Quality Assurance For products that fail during the warranty period, Shenzhen Kstar New Energy Co., Ltd. will repair or replace with new products free of charge. Evidence During the warranty period, the customer needs to show the invoice and date of purchasing the product.
Page 47: Appendix 3: Terminology Interpretation
Appendix 3: Terminology interpretation terminology definition ATS ——————Automatic change-over switch STS ——————Static transfer switch AC —————— Alternating current DC —————— Direct current BESS ————— Battery energy storage system ESS—————— Energy storage system EMS————— Energy management system BMS ————— Battery Management System (Converter) PCS ——————Power conversion system SLD——————Single line diagram SOH——————(battery) health, expressed as a percentage...
Page 48 Shenzhen Kstar New Energy Co., Ltd. Address: Kstar Industrial Park, No. 7 Road, West District, High-tech Park, Guangming New District, Shenzhen Zip code: 518106 After-sales service hotline: 400-700-9662 URL: www.kstar.com.cn E-mail: service@kstar.com.cn ※The product size and parameters are subject to change without prior notice.