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Electrical Connection

5.1

Safety Instructions

The PV string will generate lethal high voltage when exposed to sunlight.

•

Operators must wear proper personal protective equipment during electrical
connections.

•

Must ensure that cables are voltage-free with a measuring instrument before
touching DC cables.

•

Respect all safety instructions listed in relevant documents about PV strings.

•

Before electrical connections, please make sure that the inverter switch and all
switches connected to the inverter are set to "OFF", otherwise electric shock
may occur!

•

Ensure that the inverter is undamaged and all cables are voltage free before
performing electrical work.

•

Do not close the AC circuit breaker until the electrical connection is complete.

Damage to the product caused by incorrect wiring is not covered by the warranty.

•

Electrical connection must be performed by professionals.

•

Operators must wear proper personal protective equipment during electrical
connections.

•

All cables used in the PV generation system must be firmly attached, properly
insulated, and adequately dimensioned.

All electrical connections must comply with local and national / regional electrical

standards.

•

Cables used by the user shall comply with the requirements of local laws and
regulations.

•

Only with the permission of the national / regional grid department, the inverter
can be connected to the grid.

Содержание SG320HX

Страница 1: ...SG320HX SG350HXPV Grid Connected InverterUser ManualSG320_350HX UEN Ver16 202207 User Manual PV Grid Connected Inverter SG320HX SG350HX SG320_350HX UEN Ver16 202207...

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Страница 3: ...anual are owned by SUNGROW All other trademarks or registered trademarks mentioned in this manual are owned by their respective owners Software Licenses It is prohibited to use data contained in firmw...

Страница 4: ...cal and mechanical schematics Have received professional training related to the installation and commissioning of elec trical equipment Be able to quickly respond to hazards or emergencies that occu...

Страница 5: ...te risk potential hazards that if not avoided may lead to death or serious injury Indicates low risk potential hazards that if not avoided may lead to minor or mod erate injury Indicates potential ris...

Страница 6: ......

Страница 7: ...n 6 2 3 Symbols on the Product 8 2 4 LED Indicator 9 2 5 DC Switch 10 2 6 Circuit Diagram 10 2 7 Function Description 11 3 Unpacking and Storage 14 3 1 Unpacking and Inspection 14 3 2 Unpacking Steps...

Страница 8: ...ements 44 5 6 2 Requirements for OT DT Terminal 47 5 6 3 Connection Procedure of One Wire per Phase with Multi core Cable 48 5 6 4 Connection Procedure of Two Wires per Phase with Multi core Cable 53...

Страница 9: ...tion Parameters 89 7 8 4 Communication Parameters 93 7 8 5 Firmware Update 94 7 8 6 Password Changing 95 8 System Decommissioning 96 8 1 Disconnecting the Inverter 96 8 2 Dismantling the Inverter 96 8...

Страница 10: ......

Страница 11: ...nstalling operating and maintaining the product comply with local laws and regulations The safety precautions in this manual are only supplements to local laws and regulations 1 1 Unpacking and Inspec...

Страница 12: ...rter are set to OFF otherwise electric shock may occur The PV string will generate lethal high voltage when exposed to sunlight Operators must wear proper personal protective equipment during electric...

Страница 13: ...s is not covered by the warranty Comply with the safety instructions related to PV strings and the regulations re lated to the local grid 1 4 Operation Safety When the inverter is running do not touch...

Страница 14: ...efore operating the inverter after it cools down Touching the power grid or the contact points and terminals on the inverter con nected to the power grid may lead to electric shock The power grid side...

Страница 15: ...re figure 2 1 Inverter Application in PV Power System Do not connect any local load between the inverter and the AC circuit breaker ex cept for the tracking axis The inverter is only applicable to the...

Страница 16: ...m before enabling the Anti PID function 2 2 Product Introduction Model Description The model description is as follows take SG350HX as an example Appearance The following figure shows the appearance o...

Страница 17: ...ound ing terminals 2 use at least one of them to ground the inverter 4 Bottom handles 2 used to move the inverter 5 Mounting ears 4 used to hang the inverter onto the mounting bracket 6 Wiring area DC...

Страница 18: ...gether with household waste Read the user manual before maintenance TUV mark of conformity CE mark of conformity EU EEA Importer UKCA mark of conformity The height of the label should not exceed 5 mm...

Страница 19: ...e On The device is connected to the grid and operating normally Fast blink Period 0 2s The Bluetooth communication is connected and there is data communication No system fault occurs Slow blink Period...

Страница 20: ...r figure 2 4 Circuit Diagram DC switches can safely disconnect the PV input when necessary to ensure the safe op eration of the inverter and the safety of personnel The DC SPD provides a discharge cir...

Страница 21: ...d RS485 communication interfaces The standard RS485 communication interfaces are used to establish communication con nection with monitoring devices and upload monitoring data by using communication c...

Страница 22: ...ineering company and the user should confirm with the PV panel manufacturer the compensation voltage direction against PID of the selected panel when designing the plant Make sure the inverter is appl...

Страница 23: ...he voltage scheme for the anti PID function or PID recovery function does not meet the requirement of corresponding PV modules the PID will not work as expected or even damage the PV modules When the...

Страница 24: ...ovide photos to facilitate services Do not dispose of the original packing case It is recommended to store the device in the original packing case when the product is decommissioned After receiving th...

Страница 25: ...15 step 2 Remove the packing box upwards step 3 Remove the surrounding paper angle beads step 4 Remove the upper cushion User Manual 3 Unpacking and Storage...

Страница 26: ...irect sunlight rain and strong electric field Do not place the inverter in places with items that may affect or damage the inverter Store the inverter in a clean and dry place to prevent dust and wate...

Страница 27: ...b jects or smoke Improper handling may cause personal injury When moving the inverter be aware of its weight and keep the balance to pre vent it from tilting or falling Wear proper protective equipmen...

Страница 28: ...s free from direct sunlight direct rain and snow have longer service life Consider sheltered places as the installation location The inverter should be well ventilated Ensure air circulation The inver...

Страница 29: ...the inverter vertically or tilt backwards Do not install the inverter horizontally forward excessively backward sideways or upside down Inverters in floating plants cannot be installed at a back tilt...

Страница 30: ...e cables at the positions 300 350 mm away from the DC connector AC waterproof terminal and communication waterproof terminal The various waterproof terminals should be tightened in accordance with the...

Страница 31: ...ling inverters back to back the distance between every two inverters should be at least 600 mm recommended If the on site distance is shorter than the recommended clearance add a baffle between every...

Страница 32: ...able 4 1 Tool specification Goggles Earplugs Dust mask Protective gloves Insulated shoes Utility knife Slotted screwdriver M2 M3 M6 Phillips screwdriver M4 M6 M8 Hammer drill 12 Pliers Marker Level Ru...

Страница 33: ...uipment such as anti impact shoes and gloves Attention must be paid to the center of gravity of the inverter to avoid tilting dur ing handling Placing the inverter directly on a hard ground may cause...

Страница 34: ...included in the scope of delivery Lifting ring 2 M12 load bearing capacity of a single ring 260 kg Not included in the scope of delivery Sling 1 length 2 5 m load bearing capacity of a sin gle sling...

Страница 35: ...bottom terminals step 2 Lead the sling through the two lifting rings and fasten the tie down strap step 3 Hoist the inverter and stop to check for safety when the inverter is 100 mm above the ground...

Страница 36: ...r other objects Stop hoisting in the event of severe weather such as heavy rain thick fog or strong wind The lifting rings and the sling are not within the delivery scope End 4 5 Installing the mounti...

Страница 37: ...re 4 1 Dimensions of mounting bracket Install the inverter to the mounting bracket and dimensions after installation are as follows 4 5 1 Bracket Mounted Installation Tools User Manual 4 Mechanical Mo...

Страница 38: ...ivery scope step 1 Assemble the mounting bracket by using the connecting bar step 2 Place the assembled mounting bracket onto the PV bracket with the distance between the mounting bracket and the grou...

Страница 39: ...illips screwdriver electric screw driver M4 Marker Level Hammer drill Drill bit 12 Wrench Opening 16 mm Spare parts Item Quantity Specification Source Grub screw 2 M4 10 Delivery scope Expansion bolt...

Страница 40: ...step 3 Drill the holes by using a hammer drill Insert the expansion bolts into the holes and secure them with a rubber hammer Fasten the nut with a wrench to expand the bolt Remove the nut spring wash...

Страница 41: ...nting bracket step 5 Fix the baffle plate to the wall with the expansion bolts figure 4 2 Dimensions of baffle plate mm figure 4 3 Relative distance between baffle plate and mounting bracket mm End Us...

Страница 42: ...Bolt assembly 4 M10 Delivery scope Nut assembly 4 M10 Self prepared U shaped steel 2 Self prepared Clamp 2 Determined by column specifications Self prepared step 1 Bury the column into the installatio...

Страница 43: ...33 step 4 Use bolts and clamps to fix the U beam to the column step 5 Use bolts to secure the pegboard to the U beam User Manual 4 Mechanical Mounting...

Страница 44: ...verter to the installation position when necessary refer to 4 4 2 Hoisting Trans port If the installation position is not high enough skip this step step 2 Remove the bottom cushion and lift the inver...

Страница 45: ...35 It is necessary to secure the left and right sides of the inverter to the mounting bracket with screws otherwise the inverter may become unstable End User Manual 4 Mechanical Mounting...

Страница 46: ...amaged and all cables are voltage free before performing electrical work Do not close the AC circuit breaker until the electrical connection is complete Damage to the product caused by incorrect wirin...

Страница 47: ...ffecting the long term normal operation of the inverter Comply with the safety instructions related to PV strings and the regulations re lated to the utility grid The cable colors in figures in this m...

Страница 48: ...ion wiring F Communica tion terminal COM2 3 Optional digital input output DI DO and CAN wiring etc G External grounding terminal For reliable grounding 2 use at least one of them to ground the inverte...

Страница 49: ...racking system power cable Outdoor double core copper wire cable 8 18 0 5 10 Recommended 4 6 3 External ground ing cable Outdoor single core copper wire cable The same as that of the PE wire in the AC...

Страница 50: ...5 4 PE Wire Requirements 2 Outdoor three core cop per wire cable Outdoor PE cable L1 L2 L3 wire 40 75 PE wire 15 32 3 Outdoor four core alumi num wire cable 1 40 75 L1 L2 L3 wire 70 400 PE wire refer...

Страница 51: ...able 1 Outdoor PE cable L1 L2 L3 wire 47 59 PE wire 10 30 L1 L2 L3 wire 120 185 PE wire refer to table 5 4 PE Wire Requirements 1 A copper to aluminum adapter terminal is required when an aluminum cab...

Страница 52: ...able Requirements If an aluminium cable is selected use a copper to aluminium adapter terminal to avoid direct contact between the copper bar and the aluminium cable figure 5 5 Aluminium cable termina...

Страница 53: ...xternal protective grounding terminal must meet at least one of the following requirements The cross sectional area of the AC side grounding cable is not less than 10 mm2 for copper wire or 16 mm2 for...

Страница 54: ...and fasten the cable with a screwdriver step 3 Apply paint to the grounding terminal to ensure corrosion resistance The grounding screws have been anchored to the side of the inverter before deliv er...

Страница 55: ...oad at night The transformer may be of the liquid immersed type or dry type and shield winding is not necessary The line to line voltage on the LV side of the transformer should endure the output volt...

Страница 56: ...impedance of 8 can be calculated in the fol lowing way I 4480 1 1 0 8 1 732 0 08 44 46 kA Thus the MCCB lcu of the LV cabinet branch circuit should be no less than 44 46kA at 880Vac The temperature an...

Страница 57: ...nd an input port including switches should be re served in the LV power distribution room of the boost transformer 5 6 2 Requirements for OT DT Terminal OT DT terminals not included in the delivery sc...

Страница 58: ...tion step 2 Loosen the two screws on the front cover of the junction box with the hexagon socket wrench provided Open the junction box During the wiring process the limit rod attached to the cover kee...

Страница 59: ...en the sealing plate is removed to avoid screw loss step 4 Cut off excess sealing ring according to the outer diameter of the cable step 5 Lead the cable with the protective layer removed through the...

Страница 60: ...50 step 6 Open the protection cover step 7 Fix cables with crimped OT DT terminals to corresponding terminals 5 Electrical Connection User Manual...

Страница 61: ...51 Ensure that the depth L of the socket used is not less than 28 mm step 8 Close the protection cover User Manual 5 Electrical Connection...

Страница 62: ...ction block and tighten the two screws on its front cover with the hexagon socket wrench provided End When a separate single core cable is used as the PE cable lead it into the junction box through th...

Страница 63: ...socket wrench provided Open the junction box During the wiring process the limit rod attached to the cover keeps the junction box open The screws on the front cover of the junction box are captive sc...

Страница 64: ...en the sealing plate is removed to avoid screw loss step 4 Cut off excess sealing ring according to the outer diameter of the cable step 5 Lead the cable with the protective layer removed through the...

Страница 65: ...55 step 6 Open the protection cover step 7 Fix cables with crimped OT DT terminals to corresponding terminals User Manual 5 Electrical Connection...

Страница 66: ...56 Ensure that the depth L of the socket used is not less than 28 mm step 8 Close the protection cover after fixing all cables to corresponding terminals 5 Electrical Connection User Manual...

Страница 67: ...the two screws on its front cover with the hexagon socket wrench provided End 5 7 DC Cable Connection The PV string will generate lethal high voltage when exposed to sunlight Respect all safety instr...

Страница 68: ...N position do not operate immediately Otherwise the inver ter may be damaged Please turn the DC switch to OFF and remove the DC connector to adjust the polarity of the strings when the string current...

Страница 69: ...present in the inverter Ensure all cables are voltage free before performing electrical operations Do not connect the AC circuit breaker before finishing electrical connection SUNGROW provides corresp...

Страница 70: ...ontact step 3 Lead the cable through cable gland and insert the crimp contact into the insulator until it snaps into place Gently pull the cable backward to ensure firm connection step 4 Tighten the c...

Страница 71: ...the PV string for polarity correctness and ensure that the open circuit voltage in any case does not exceed the inverter input limit of 1 500 V The range of the multimeter shall be greater than 1500 V...

Страница 72: ...nal step 1 Refer to step 1 to step 2 described in 5 6 3 Connection Procedure of One Wire per Phase with Multi core Cable step 2 Cut off excess sealing ring according to the outer diameter of the cable...

Страница 73: ...cables to corre sponding terminals The tracking power cable can be installed in any two phases of L1 L2 L3 step 5 Close the protection cover Close the wiring compartment and tighten the two screws on...

Страница 74: ...Port PIN Definition Description RS485_1 1 RS485A IN RS485 differential sig nal Used for cascading in verters or connecting to devices such as the Da ta Logger 2 RS485A IN RS485 differential sig nal 3...

Страница 75: ...isy chain A Inverter B Data Logger C PC D Tracking system The length of the RS485 cable should be no longer than 1 200 m If multiple inverters are connected to the data logger the number of permissibl...

Страница 76: ...e making of wire parts step 3 Select a seal according to the cable outer diameter Lead the cable through the swivel nut seal and on site making of wire parts step 4 Strip the cable of appropriate leng...

Страница 77: ...g terminals step 6 Pull cables outwards to confirm whether they are fastened firmly then tighten the swivel nut with appropriate torque step 7 Remove the waterproof lid from the communication terminal...

Страница 78: ...68 step 8 Insert the connector into the communication terminal step 9 Seal the vacant connector seal with a waterproof plug End 5 Electrical Connection User Manual...

Страница 79: ...t 4 PGND D0 5 COM fault output dry contact 6 NC 7 NO 8 5 10 2 Dry Contact Function DI terminal emergency stop dry contact the dry contact can be configured to be an emergency stop contact When the DI...

Страница 80: ...ser can configure it to be a normal open contact COM NO or a normal close contact COM NC The relay is initially at the NC terminal and it will trip to another contact when a fault occurs Use LED indic...

Страница 81: ...1 Unscrew the swivel nut from the communication terminal and take out the seal step 2 Press the snap on both sides of the connector to remove the on site making of wire parts step 3 Select a seal acco...

Страница 82: ...of protective and insulating layers step 5 Secure the wires to corresponding terminals step 6 Pull cables outwards to confirm whether they are fastened firmly then tighten the swivel nut with appropr...

Страница 83: ...e the waterproof lid from the communication terminal COM2 step 8 Insert the connector into the communication terminal step 9 Seal the vacant connector seal with a waterproof plug User Manual 5 Electri...

Страница 84: ...ld be the same If not the length difference must be smaller than 2m If there is one wire per phase with multi core cable the maximum communication dis tance is 1000 m If there are two wires per phase...

Страница 85: ...e items mentioned above meet the requirements proceed as follows to start up the inverter for the first time step 1 Rotate one DC switch of the inverter to the ON position When the indicator blinks bl...

Страница 86: ...76 step 5 The home page is automatically displayed when the initialization is completed The indicator is steady blue and the inverter is in grid connected operation End 6 Commissioning User Manual...

Страница 87: ...logs etc Screenshots in this manual are based on the Android system V2 1 6 and the ac tual interfaces may differ 7 2 Installing the App Method 1 Download and install the App through the following app...

Страница 88: ...ter the login page tap Local Access at the bottom of the page to go to the next page step 2 Scan the QR code on the side of the inverter for Bluetooth connection Or tap MANUAL CONNECTION at the bottom...

Страница 89: ...79 figure 7 1 Bluetooth Connection step 3 Enter the identity verification screen after the Bluetooth connection is established User Manual 7 iSolarCloud App...

Страница 90: ...ep 4 If the inverter is not initialized you will enter the quick setting screen of initializing protection parameter figure 7 3 Initialization Protection Parameter The Country Region must be set to th...

Страница 91: ...n Overview The App provides parameter viewing and setting functions as shown in the following figure figure 7 4 App function tree map 7 5 Home page After login the home page is as follows User Manual...

Страница 92: ...flow chart Display the PV power generation power feed in power etc The line with an arrow indicates energy flow between con nected devices and the arrow pointing indicates energy flow direction 5 Real...

Страница 93: ...instructions received from the monitoring background Fault If a fault occurs inverter will automatically stop operation and discon nect the AC relay The fault information will be displayed in the app...

Страница 94: ...protection ground Country Information Power Limitation Mode Reactive Power Mode Input Total DC Power DC side total input power MPPT x Voltage The input voltage of MPPT x MPPT x Current The input curre...

Страница 95: ...7 7 Fault Alarm Record Click to select a time segment and view corresponding records The inverter can record up to 400 latest entries Select one of the records in the list and click the record to vie...

Страница 96: ...percentage of present power and nominal power Daily energy histogram Shows the power output every day in the present month Monthly energy histogram Shows the power output every month in a year Annual...

Страница 97: ...only Boot Shutdown Tap Boot Shutdown to send the boot shutdown instruction to the inverter Date Setting Time Setting The correct system time is very important Wrong system time will directly affect th...

Страница 98: ...covery functions between 22 00 pm and 5 00 am by default Anti PID Enable this function of the inverter to protect PV modules from PID effect during the daytime Clear PID Alarm If ISO impedance abnorma...

Страница 99: ...ng figure figure 7 14 Active Power Regulation table 7 7 Active Power Regulation Parameter Definition Setting Description Range Active power soft start after fault The switch for enabling dis abling th...

Страница 100: ...over 100 Enable Disable The inverter provides the reactive power regulation function Enable this function under Re active Power Regulation Mode and select the appropriate mode table 7 8 Descriptions o...

Страница 101: ...600 0s Q P Curve Select corresponding curve according to local regulations A B C QP_P1 Output power at P1 on the Q P mode curve in percentage 0 100 QP_P2 Output power at P2 on the Q P mode curve in pe...

Страница 102: ...limit at P1 on the Q U mode curve 80 100 QU_Q1 Value of Q Sn at P1 on the Q U mode curve 60 0 0 Over load Rate 1000 QU_V2 Grid voltage limit at P2 on the Q U mode curve 80 100 QU_Q2 Value of Q Sn at...

Страница 103: ...currently figure 7 16 Q U Curve 7 8 4 Communication Parameters Serial Port Parameters Tap Settings Communication Parameters Serial Port Parameters to enter the corre sponding interface as shown in th...

Страница 104: ...en on which you can view the device list step 4 Select the device model before downloading the firmware Tap the device name in the de vice list to enter the firmware upgrade package detail interface a...

Страница 105: ...the upgrade completion Tap Complete to end the upgrade End 7 8 6 Password Changing Tap Modify Password to enter the modify password screen as shown in the following figure figure 7 19 Change Password...

Страница 106: ...he capacitors inside the inverter completely discharge step 4 Ensure that the DC cable is current free via a current clamp End 8 2 Dismantling the Inverter Risk of burn injuries and electric shock Aft...

Страница 107: ...conservation End 8 3 Disposal of the Inverter Users take the responsibility for the disposal of the inverter Please scrap the inverter in accordance with relevant local regulations and stand ards to a...

Страница 108: ...tual grid voltage and contact the local electric power company for solutions if the grid voltage is higher than the set value 2 Check whether the protection parameters are appropriately set via the Ap...

Страница 109: ...ted to the correct terminal whether the live wire and the N wire are correctly in place 4 Check whether the AC circuit breaker is connected 5 Contact Sungrow Customer Service if the pre ceding causes...

Страница 110: ...s of reverse polarity If so disconnect the DC switch and adjust the polarity when the string current drops below 0 5 A 2 Contact Sungrow Customer Service if the pre ceding causes are ruled out and the...

Страница 111: ...to code 595 are corresponding to string 17 to string 32 respectively 37 Excessively High Ambient Temperature Generally the inverter will resume operation when the internal or module temperature retur...

Страница 112: ...nals to ensure a reli able connection 5 Contact Sungrow Customer Service if the pre ceding causes are ruled out and the fault persists 106 Grounding Cable Fault 1 Check whether the AC cable is correct...

Страница 113: ...nication cable of the meter 3 Contact Sungrow Customer Service if the pre ceding causes are ruled out and the alarm persists 323 Grid Confrontation 1 Check whether the output port is connected to actu...

Страница 114: ...233 432 434 500 513 515 518 635 638 900 901 910 911 996 System Alarm 1 The inverter can continue running 2 Check whether the related wiring and terminal are abnormal check whether there are any for e...

Страница 115: ...re bat teries Close the AC and DC switches in turn 15 minutes later and restart the system 2 If the fault persists please contact Sungrow Power Customer Service 1548 1579 String Current Reflux 1 Check...

Страница 116: ...5 A 3 It is prohibited to power up the inverter again Please contact Sungrow Customer Service 9 2 Maintenance 9 2 1 Maintenance Notices Risk of inverter damage or personal injury due to incorrect ser...

Страница 117: ...covered by the warranty Touching the PCB or other static sensitive components may cause damage to the device Do not touch the circuit board unnecessarily Observe the regulations to protect against el...

Страница 118: ...nance Power off the inverter and disconnect it from all power supplies before main taining fans After the inverter is powered off for 25 minutes measure the voltage and cur rent with professional inst...

Страница 119: ...109 step 3 Press the tab of the latch hook unplug the cable connection joint outwards and loosen the screw on the fan holder User Manual 9 Troubleshooting and Maintenance...

Страница 120: ...110 step 4 Loosen screws on the sides of fans step 5 Pull out the fans Clean them with a soft brush or vacuum cleaner and replace them when necessary 9 Troubleshooting and Maintenance User Manual...

Страница 121: ...111 If there is not enough space pull out part of the fans and remove the screws be tween the two fans End User Manual 9 Troubleshooting and Maintenance...

Страница 122: ...nal 30 A for 16 MPPT inputs Max PV input current 12 40 A Optional 14 30 A 16 30 A Max DC short circuit cur rent per MPPT 60 A Output AC AC output power 352 kVA 30 320 kVA 40 295 kVA 50 Max AC output c...

Страница 123: ...General Data Dimensions W H D 1136 870 361 mm 1136 870 361 mm 44 7 34 3 14 2 Weight 116 kg 116 kg 255 7 lbs Isolation method Transformerless Degree of protection IP66 IP66 NEMA 4X Power consumption a...

Страница 124: ...distance of DC dry contact must meet the requirements in the Table below The wiring distance L is the total length of all DI signal cables LK refers to the cable length in one direction between the DI...

Страница 125: ...product faults occur during the warranty period SUNGROW will provide free service or replace the product with a new one Evidence During the warranty period the customer shall provide the product purc...

Страница 126: ...nd use range are beyond stipulations of relevant international standards The damage is caused by unexpected natural factors For faulty products in any of above cases if the customer requests maintenan...

Страница 127: ...www sungrowpower com Sungrow Power Supply Co Ltd...

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