Static Transfer Switch Series (User Manual)
Contents
1. 11 A NELTA 0 NETWORK port Connects to the Ethernet Network LOCAL port Connects to a workstation with an RJ45 to DB9 cable to configure the system 3 RESET button Resets InsightPower SNMP IPv6 for STS hereafter referred to as SNMP IPv6 This DOES NOT affect the operation of the STS LED indicators NET LED green indicates network communication status STS LED yellow indicates the STS s communication status LED Condition Meaning i Blinking a Rapidly Firmware is upgrading NET LED Ethemetis unlinked 0 is unlinked Ethernet is linked but no DHCP server is found NET LED Blinking IP 192 168 1 100 NET LED Ethernet is Ethernet is linked E LED 1 Initialization 2 SNMP IPv6 mr STS LED LED Amber SNMP IPv6 SNMP abnormality Every Poor connection between the STS and second the SNMP IPv6 STSLED Blinking Every Normal connection between the STS 50 ms and the SNMP IPv6 Set up operation mode 5 DIP switches OFF OFF Normal Mode The built in SNMP IPv6 provides the STS s status information and parameters through a network system Infrasuite Power Management 12 Chapter 6 Operation OFF ON Pass Through The built in SNMP IPv6 stops Mode polling the STS but transfers the communication data between the LOCAL port and the STS ModBus Communication 9600bps 8 N 1 ON ON Configuration In this mode users can login through Mode the2. A NELTA 4 2 Rear Installation for Rack Mounting Model STS30002SR00035 STS30002SR10035 D D D D D D D D D D D n D D D D n D n D QO n D D D D L n D D D Li D Infrasuite Power Management 8 Chapter 5 Wiring Chapter 5 Wiring e Connect input power cables to two power sources source 1 S1 amp source 2 S2 Source 1 S1 is the preferred source Connect output power cable to load e Connect Ethernet cable to the front panel s NETWORK port Model STS30002SR00035 Model STS30002SR10035 9 A NELTA Chapter 6 Operation 6 1 Front Panel NETWORK LOCAL 9 1 S1 ON l RESET o 1 TEST Q Test button Use this button to test the STS Press this button the STS will transfer to the 2nd source for 1 minute and then transfer back to original preferred source Test LED Green If you press the test button the STS will be under test conditions and the Test LED will flash on 0 5s off 0 5s In normal operation this LED will be off S1LED Green This LED indicates the condition of input source 1 If the input source 1 is within acceptable range this LED will light up as green If the input source 1 is out of acceptable range this LED will be off S2LED Green This LED indicates the condition
3. Report the recover time of transfer from secondary to primary Report the max voltage of comparing cycles for primary AC blackout Report the max voltage of comparing cycles for secondary AC blackout Report the max time of comparing cycles for primary AC blackout Report the max time of comparing cycles for secondary AC blackout Log Report the event code and time 1 10 of prior transfers Tprev 1 9 Report the time of prior transfer event Tprev1 is the most recent time Event 1 9 Report the event code for prior transfer Event1 is the most recent event hh mm ss MM DD YYYY Ox hh mm ss MM DD YYYY ClearLog Clear event log SetTime Set the present time hh mm ss MM DD YYYY SetDate Set the present date MM DD YYYY SetPrefer Set the preferred source SetDevID Set the unit s device ID 20 characters alphanumeric only SetVtp2s Set the primary to secondary trip 165 0 175 0 voltage SetVts2p Set the secondary to primary trip 165 0 175 0 voltage SetVbp2s Set the primary to secondary 180 0 264 0 brownout voltage SetVbs2p Set the secondary to primary 180 0 264 0 brownout voltage SetTdp2s Set the recover time of transfer 12 0 1800 0 from primary to secondary SetTds2p Set the recover time of transfer 12 0 1800 0 from secondary to primary SetMvs1 Set the max voltage of comparing 30 50 cycles for primary AC blackout SetMvs2 Set the max voltage of 30 50
4. The power behind competitiveness Delta Infrasuite Power Management Static Transfer Switch Series User Manual www deltapowersolutions com A NELIA Smarter Greener Together Save This Manual This manual contains important instructions and warnings that you should follow during the installation operation storage and maintenance of this product Failure to heed these instructions and warnings will void the warranty Copyright 2014 by Delta Electronics Inc All Rights Reserved All rights of this User Manual Manual including but not limited to the contents information and figures are solely owned and reserved by Delta Electronics Inc Delta The Manual can only be applied to the operation or the use of this product Any disposition duplication dissemination reproduction modification translation extraction or usage of this Manual in whole or in part is prohibited without the prior written permission of Delta Given that Delta will continuously improve and develop the product changes may be made to the information in this Manual at any time without obligation to notify any person of such revision or changes Delta will make all possible efforts to secure the accuracy and the integrity of this Manual Delta disclaims any kinds or forms of warranty guarantee or undertaking either expressly or implicitly including but not limited to the completeness faultlessness accuracy non infringement merchan
5. LOCAL port and configure the built in SNMP IPv6 s settings 6 2 Operation 2 Pole circuit breaker f STS XL Uu L1 51 N Source 1 51 N1 y a e US Tote P s sensitive equipment 2 Pole circuit breaker 0 y L2 N Source 2 S2 Y N2 GH G After power connection the STS will automatically perform power on self test After the test the STS will start supplying power to its connected equipment You can also press the Test Button to force the STS to execute self test 13 A NELTA Chapter 7 InsightPower SNMP IPv6 for STS 7 1 Introdction of InsightPower SNMP IPv6 for STS The InsightPower SNMP IPv6 for STS hereafter referred to as SNMP IPv6 is built in the STS and is a device that provides an interface between the STS and a network It communicates with the STS acquires its information and remotely manages the STS via a network system The SNMP IPv6 supports public protocols including SNMP and HTTP You can effortlessly configure this SNMP IPv6 using a network system and easily obtain your STS s status and manage your STS via the SNMP IPv6 7 2 SNMP IPv6 Features Network STS management Allows remote management of the STS from any workstation through Internet or Intranet Remote STS monitoring via SNMP amp HTTP Allows remote monitoring of the STS using SNMP NMS Delta MIB Manag
6. comparing cycles for secondary AC blackout Infrasuite Power Management 24 Chapter 7 InsightPower SNMP IPv6 for STS SetMts1 Set the max time of comparing 2 0 4 0 cycles for primary AC blackout SetMts2 Set the max time of comparing 2 0 4 0 cycles for secondary AC blackout Status of upgrade progress Idle Run Error UpStep Stage of upgrade progress Init File ID Auth Addr Erase Program UpPercentage Percentage of upgrade progress Read p ENT Result of upgrade progress OK No response File ID fail Authentication fail Erase fail Flash fail Read fail Upgrade completion UpDate Report each FW upgrade time Index to hh mm ss MM DD show 1 20 YYYY AgentVer Report SNMP card version AA BB XXX Link Check current Modbus 1 Normal connection 2 Abnormal 3 Upgrading 7 7 Key Generation for SSH For Linux 1 Please download and install OpenSSH from http www openssh org 2 Launch shell and enter the following command to create your own keys Please ignore it when prompted to provide passphrase DSA Key ssh keygen t dsa RSA Key ssh keygen t rsa 3 Upload DSA and RSA key files on the web 25 A NELTA For Windows 1 Please download and install PUTTY from http www putty org 2 Run puttygen exe from the installed directory 3 Select SSH 2 RSA from the Parameters area and click Key Generate key pair to generate an RSA key 4 Select C
7. 07 18 2011 5 5 gt XCount 4402 STS Prefer S1 STS gt DevID 12345678901234567890 STS Serial 5 5 gt Tprevl 13 35 16 07718 STS gt Eventl 0x0029 STS gt Log S Log 1 13 35 16 07 18 2011 0 0029 5 gt STS SetDevID 34567890abcdefghijklmn TS DevID 12345678901234567890 STS SetDevID 1234567890abcdefghij STS DevID 1234567890abcdefgh 5 5 gt 19 A NELTA 7 5 Upgrade Upgrade via Web You can upgrade the SNMP IPv6 s firmware or the STS s firmware through the InsightPower SNMP IPv6 for STS Web please see the following figure The SNMP IPv6 will restart after finishing self upgrade If you upload the STS s firmware to the Web you can see the STS s firmware upgrade progress from the English 7 Device System About User Manager System Administration Upgrade gt Network Card Firmware gt STS Firmware Web Current Ver 01 12 12d Current Ver DELTA FT 2 07 Console Firmware File Choose File No file chosen Release Date 2012 03 21 Upload Firmware File Choose File No file chosen Upload DescriptionThis feature is used to update the network card Stage Idle state Time Server firmware Please follow the following steps to bon OK complete the process S Syslog ee Step 1 Select the network card firmware file and press the DescriptionThis feature is used to update the STS firmware Upload button to upload the file to the network card Please fo
8. of input source 2 If the input source 2 is within acceptable range this LED will light up as green If the input source 2 is out of acceptable range this LED will be off S1_ON LED Green If the STS uses input source 1 to supply power to the output this LED will light up as green If not this LED will be off Infrasuite Power Management 10 Chapter 6 Operation Q S2 ONLED Green If the STS uses input source 2 to supply power to the output this LED will light up as green If not this LED will be off O P LED Green This LED indicates the output condition voltage is gt 60Vac If there is output this LED will light up as green If not this LED will be off Q Fault LED Red If the STS has any internal fault this LED will light up as red If the STS has any environmental fault this LED will flash on 0 5s off 0 55 Via the NETWORK port fault messages will be sent to a connected PC From the PC you can see error codes as follows Environmental fault Output overload Over temperature due to detection of ambient temperature E03 Over temperature warning due to detection of S1 heat sink temperature E04 Over temperature warning due to detection of S2 heat sink temperature Internal Fault Over temperature due to detection of S1 heat sink temperature E12 Over temperature due to detection of S2 heat sink temperature E13 Auxiliary power 1 circuit is failed eu Annan over2eromiieieg
9. to setup the address netmask enable or disable Configuration Des wor bin a 1Pv4 Mask IPv6 Prefix length Upgrade button is used to load the device firmware file then transmit it to c m the single selected device Ignore the checkbox Upgrade 255 255 255 0 Device List IP Address Host Name Acco Password Version Model P Mac Addr Add E 172 16 188 76 MYUSER PC 29222 1 07 53000 00 08 AB 62 Add an new item of SNMP device 172 016 188 174 INSIGHTPOW 01 12 09 EMS2000 00 fe 1a 2b to the Device List manually 172 016 188 186 INSIGHTPOW admin 01 12 09k 00 18 23 1c 172 16 188 80 UPS FW IDC 2222222 1 07 53000 00 0 29 192 168 178 1 UPS FW IDC 1 07 53000 00 08 AB 29 Set the account and password E 172 16 188 148 N40281 1 05 EMS3000 60 8 69 55 for the selected device 7 0 0 0 0 N40281 105 EMS3000 00 27 10 8 172 16 188 115 TWTNI1NB0059 1 07 EMS3000 60 EB 69 BF 4 3 E77 m Please mark the checkbox of the devices which are listed in the Device List then press the Batch Upgrade iW Batch Upgrade button to upgrade all of the marked devices sequentially Remove the selected device from the Device List 2 Enter Administrator account and password Faxon SNMP Device Address IPAddress 172 16 188 186 Administrator Account A
10. 32A Length 450MM 18 inches 1000MM Model STS30002SR00035 ow Length 3600MM 12 feet 4000MM 5 A NELTA Model STS30002SR10035 3 2 Product Description The STS is designed to guarantee the uninterrupted operation of sensitive equipment It is powered by two independent power sources and automatically makes a rapid switch from one source to the other when the power supply used to power its connected load fails This STS is designed to be efficient and reliable Users can know power flow and the STS s status from the user friendly front panel Besides the unit has a network interface for users to read and write parameters The network interface can be implemented via the Ethernet protocol through an RJ45 connector All information is available on the front panel and the LOCAL port on the front panel is available over the network through the RJ45 connector 3 3 Features e Flexible installation Front installation and rear installation for rack mounting Three types of wirings L6 30P IEC309 and Phoenix Connector e Self test function Power on self test Manual self test e Withstands high inrush current SCR design withstands high inrush current during transferring process Infrasuite Power Management 6 Installation Chapter 4 ion Chapter 4 Installat Front Installation for Rack Mounting 4 1 Model STS30002SR00035 Model STS30002SR10035
11. 4 7 3 Veiw and Front Veiw of SNMP IPv6 15 7 4 Console Managemnt 16 III A NELTA 7 5 Upgrade 20 7 6 STS Command Settings 22 7 7 Key Generation for SSH 25 Chapter 8 Troubleshooting 27 Appendix 1 Specifications 28 Appendix 2 Warranty 29 Infrasuite Power Management IV Chapter 1 Important Safety Instructions Chapter 1 Important Safety Instructions 1 4 Important Safety Notes e Only qualified personnel can service this equipment e Follow the following precautions when working on this unit 1 Remove watches rings or other metal objects 2 Use tools with insulated handles 3 Examine the packing container Notify the carrier immediately if any damage is present 4 Donotdisassemble the unit 5 Do not operate the unit near water or in an area with excessive humidity 6 Keep liquid and foreign objects from getting inside the unit 7 Do not operate the unit close to gas or fire e Upstream circuit breaker must be added for each input The recommended breaker is D curve 30A for STS30002SR00035 and D curve 32A for STS30002SR10035 e Verify whether the branch circuit breaker o
12. Server HTTPS Server Telnet Server SSH SFTP Server PTP Server Syslog HTTP Server Port HTTPS Server Port Telnet Server Port SSH Server Port FTP Server Port Syslog Server Syslog Server2 e Syslog Server3 f Syslog Server4 g SNMP Get Set Port Enable Enable Disable Enable Enable Disable 80 443 23 22 gt 161 0 Back To Previous Menu Please Enter Your Choice gt 17 A NELTA e Time Server Time Server Time Selection Time Zone lst Time Server 2nd Time Server Manual Date 01 01 2000 MM DD YYYY Manual Time 00 00 00 hh mm ss Back To Previous Menu Web Card Main Menu Card Version 01 12 11f Address 00 30 ab 26 b1 b4 1 User Manager 2 TCP IP Setting 3 Network Parameter 4 Time Server 5 Soft Restart 6 Reset All To Default d Device Communication z Exit Without Save 0 Save And Exit Please Enter Your Choice gt 5 The Web Card Will Restart Are You Sure Y es N o gt Infrasuite Power Management 18 Chapter 7 InsightPower SNMP IPv6 for STS e Device Communication You can enter the STS Command Mode below by selecting Device Communi cation STS gt Vsl 216 8 STS gt Vs2 247 9 STS gt Iout 8 1 STS gt Vout 217 1 STS gt Vbp2s 180 0 STS gt Vbs2p 180 0 STS Tdp2s 12 0 STS gt Tds2p 1200 STS gt TempF 96 STS TempC 36 STS gt Age 75878 5 5 gt Time 13 3 24
13. ccount Default admin Password Default password 21 A NELTA 3 Click Upgrade The upgrade dialog box pops up Click Browse to select a valid firmware binary file Verify the firmware version shown under File Information and then click Upgrade Now to continue Upgrade Select Firmware File Ne g Firmware File Name Z Nsts DELTA 01 12 12d bin File Information Product Ver 0112124 Upgrade Now Exit 7 6 STS Command Settings Report summary information Command lt unit gt TempF Report internal STS fahrenheit temperature TempC Report internal STS celsius temperature Ae Report internal STS age Time Report present time hh mm ss MM DD YYYY XCount Report number of times that STS has transferred report tne modernare zm was Regon ne Freese daie Serie Resorts nts seal number meer Report preterea soree eme Reporte sensi Infrasuite Power Management 22 Chapter 7 InsightPower SNMP IPv6 for STS Report the operation mode Initialization Diagnosis Report the output voltage Report the output current T Report the primary to secondary trip voltage Report the secondary to primary trip voltage Report the primary to secondary brownout voltage Report the secondary to primary brownout voltage Report the recover time of transfer from primary to secondary
14. d Main Menu Web Card Main Menu Card Version 01 12 11f Address 00 30 ab 26 b1 b4 User Manager TCP IP Setting Network Parameter Time Server Soft Restart Reset All To Default Device Communication Exit Without Save Save And Exit Please Enter Your Choice gt User Manager User Manager RADIUS 1 RADIUS Auth Disable 2 Server 3 Secret 4 Port Local Auth Administrator 5 Account admin 6 Password d 7 Limitation Only in This LAN Device Manager 8 Account device 9 Password oko k k k a Limitation Only in This LAN Read Only User b Account user c Password KKKKKKKK d Limitation Allow Any 0 Back To Previous Menu Please Enter Your Choice Infrasuite Power Management 16 e TCP IP Setting TCP IP Setting 4 Address IPv4 Subnet Mask IPv4 Gateway IP IPv4 DNS or WINS IP DHCPv4 Client IPv6 Address IPv6 Prefix Length IPv6 Gateway IP 6 DNS DHCPv6 Host Name NetBIOS System Contact System Location Auto Negotiation Speed Duplex Status Stable i Telnet Idle Time Chapter 7 InsightPower SNMP IPv6 for STS 192 168 1 100 25912592550 192 168 1 254 192 168 1 254 Enable 0 fe80 226 Sbff fecc fdal Disable INSIGHTPOWER Enable 100M Full 3 60 Seconds 0 Back To Previous Menu Please Enter Your Choice gt e Network Parameter Network Parameter HTTP
15. ement Information Base or a Web Browser STS and system function configuration from any client password protect ed Sets the STS and system parameters through a Web Browser Event logs amp metering data keeping Provides a history data of the STS s power events power quality and status Other features and supported protocols include User notification via SNMP Traps and e mail Network Time Protocol Telnet configuration BOOTP DHCP HTTPS SSH SFTP and SNMPv3 security protocols Infrasuite Power Management 14 Chapter 7 InsightPower SNMP IPv6 for STS RADIUS Remote Authentication Dial In User Service login and local authentication Remote event log management through syslog IPv6 Ready Logo certified ID 02 C 000624 DEFAULT SETTING User Name admin Password password DHCP Client Enable IPv4 Address 192 168 1 100 7 3 Top Veiw and Front Veiw of SNMP IPv6 e Top View Network Port LED Indicators Local Port Reset Button Dip Switches e Front View Network Port Dip Switches LED Indicators Local Port Reset Button 15 A NELTA 7 4 Console Managemnt You can manage the SNMP IPv6 through the LOCAL port Please use an RJ45 to DB9 cable to connect the SNMP IPv6 s LOCAL port and your workstation s COM port Make sure both of the DIP switches are set to the OFF position normal mode The baud rate of the workstation s COM setting should be 2400 bps e Web Car
16. llow the following steps to complete the Batch Configuration process Step2 Wait about 1 minute for the network card to reprogram the flash and reboot again Step 1 Select the STS firmware file and press the Upload Upgrade o button to upload the file to the network card Step2 for the network card to reprogram the STS flash Upgrade via FTP SFTP You can also upgrade the SNMP IPv6 s firmware or the STS s firmware by using FTP or SFTP program Make sure you upload correct images to upgrade snmp when upgrading SNMP IPv6 s firmware and upload correct images to upgrade device when upgrading the STS s firmware P Gconfig_snmp P config system P https pem b ssh P Essh pubkey gt Gssh_rsa gt Gjupgrade device gt jupgrade snmp Infrasuite Power Management 20 Chapter 7 InsightPower SNMP IPv6 for STS Upgrade via EzSetting You can also upgrade the SNMP IPv6 s firmware or the STS s firmware by using EzSetting 1 Click Discover A list of SNMP devices is shown Select a device from the Device List and click Modify mas InsightPower ing Ln x LAN Press Discover button to search all of the SNMP devices in the LAN Discover Then select one of device in the Device List which you would like to configure or upgrade it But before to do that please provide the account name and password by pressing the Modify button Subnet ion i 172 16 188 0 Configuration is used
17. onversions Export OpenSSH Key and assign a file name to the RSA key Please ignore it when prompted to provide key passphrase 5 Select SSH 2 DSA from the Parameters area and select Key Generate key pair to generate a DSA key 6 Select Export OpenSSH Key from Conversions and assign a file name to the DSA key Please ignore it when prompted to provide key passphrase 7 Upload the DSA and RSA key files to the web if PuTTY Key Generator File Key Conversions Help Key Public key for pasting into OpenSSH authorized keys file Please copy the context of public key here and paste it into a key file Key comment dsa key 20110707 Key passphrase E Confirm passphrase Actions Generate a public private key pair Generate Load an existing private key file Load Save the generated key Save public key Save private key Parameters Type of key to generate SSH 1 RSA SSH 2RSA 55 2 DSA Number of bits generated key 1024 Infrasuite Power Management 26 Chapter 8 Troubleshooting Chapter 8 Troubleshooting All LEDs on the The power Check the output overload front panel are off sources S1 and short circuit S2 are both absent Check both power sources S1 and S2 Reset the upstream circuit breakers S1 or S2 LED is The corresponding Check the corresponding power off power source is source absent or out of Reset
18. r fuse on service feed is correct e Verify line voltage requirements and the supplied line voltage prior to installation 1 2 Electrical Warnings e When servicing this equipment you may need to remove its protective covers and connect utility power Please observe great caution during these procedures e Check that power cords plugs and outlets are in good condition 1 A NELTA 1 3 Standard Compliance Safety UL US UL 60950 1 CE EU IEC EN 60950 1 EMI CISPR 22 Class A and FCC Class A EMS IEC 61000 4 2 IEC 61000 4 6 IEC 61000 4 3 IEC 61000 4 8 IEC 61000 4 4 IEC 61000 4 11 IEC 61000 4 5 IPv6 Certification IPv6 Ready Logo Phase 2 Core for Host Logo ID 02 C 000624 Infrasuite Power Management 2 Chapter 2 Package and Storage Chapter 2 Package and Storage 2 4 Package Contents STS package contains the following items STS module X1 Rack mounting bracket X2 Bracket screw X8 Rack screw X4 Rack nut X4 ao fF ON gt Model STS30002SR00035 3 A NELTA Model STS30002SR10035 2 2 Storage Please store the STS in its original package and in a dry place Keep the storage temperature between 15 C 50 Infrasuite Power Management 4 Chapter 3 Product Introduction Chapter 3 Product Introduction 3 4 Models There are three models Please see the following table and pictures STS30002SR00035 STS30002SR10035 US Model EU Model L6 30P IEC309 32A L6 30R IEC309
19. r to damage resulting from improper installation operation usage maintenance or irresistible force i e war fire natural disaster etc and this warranty also expressly excludes all incidental and consequential damages Maintenance service for a fee is provided for any damage out of the warranty period If any maintenance is required please directly contact the supplier or Seller WARNING The individual user should take care to determine prior to use whether the environment and the load characteristic are suitable adequate or safe for the installation and the usage of this product The User Manual must be carefully followed Seller makes no representation or warranty as to the suitability or fitness of this product for any specific application 29 A NELTA A NELTA Smarter Greener Together I 5013212300
20. tability or fitness for a particular purpose of the Manual Infrasuite Power Management II Table of Contents Table of Contents Chapter 1 Important Safety Instructions 1 1 14 Important Safety Notes 1 1 2 Electrical Warnings 1 1 3 Standard Compliance 2 Chapter 2 Package and Storage 3 2 1 Package Contents 3 2 2 Storage 4 Chapter 3 Product Introduction 5 3 1 Models T sJ J 5 3 2 Product Description 6 3 3 Features 6 Chapter 4 Installation 7 4 1 Front Installation for Rack Mounting 7 4 2 Rear Installation for Rack Mounting 8 Chapter 5 Wiring MM 9 Chapter 6 Operation 0mm 10 6 1 Front Panel 10 G2 Operation 13 Chapter 7 InsightPower SNMP IPv6 for STS 14 7 1 Introdction of InsightPower SNMP IPv6 for STS 14 7 2 SNMP IPv6 Features 1
21. the corresponding range upstream circuit breaker Fault LED flashes Output overload Reduce the connected load Over temperature Check the environment temperature Fault LED lights Internal component Please contact service personnel up damage Can not Wrong setting or Refer to the user manual of communicate with malfunction InsightPower SNMP IPv6 for STS the STS 27 A NELTA Appendix 1 Specifications Operating 180V to 264V Voltage Operating 45Hz to 65HZ Frequency Current Rating 25 6A for CE 24A for UL 43mm 440mm x 355mm W x D Dimensions STS30002SR00035 7 7Kg 596 9595 RH non condensing lt 45dBA measured at a distance Acoustic noise of 1 meter in front of the STS under full load condition Operating Elevation 0 to 2000m 0 to 6252ft NOTE 1 Refer to the rating label for the safety rating Environment 2 All specifications are subject to change without prior notice Infrasuite Power Management 28 Appendix 2 Warranty Appendix 2 Warranty Seller warrants this product if used in accordance with all applicable instructions to be free from original defects in material and workmanship within the warranty period If the product has any failure problem within the warranty period Seller will repair or replace the product at its sole discretion according to the failure situation This warranty does not apply to normal wear o
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