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5.4

Crimp OT / DT terminal

1. Heat shrink tubing

2. OT DT terminal

3. Hydraulic pliers

4. Heat gun

Aluminium Cable 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 terminal connection sequence

1. Copper to Aluminium adapter terminal

2. Flange nut

3. Aluminium cable

Ensure that the selected terminal can directly contact with the copper bar. If there

are any problems, contact the terminal manufacturer.

Ensure that the copper bar is not in direct contact with the aluminum wire. Other-

wise, electrochemical corrosion may occur, impairing the reliability of electrical

connection.

5 Electrical Connection

User Manual

Summary of Contents for SG285HX

Page 1: ...X SG320HX SG333HX SG350HXPV Grid Connected InverterUser ManualSG285_320_333_350HX UEN Ver17 202209 User Manual PV Grid Connected Inverter SG285HX SG320HX SG333HX SG350HX SG285_320_333_350HX UEN Ver17...

Page 2: ......

Page 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...

Page 4: ...o meet the following requirements Know electronic electrical wiring and mechanical expertise and be familiar with electri cal and mechanical schematics Have received professional training related to t...

Page 5: ...Indicates high risk potential hazards that if not avoided may lead to death or seri ous injury Indicates moderate risk potential hazards that if not avoided may lead to death or serious injury Indica...

Page 6: ......

Page 7: ...n 7 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...

Page 8: ...Side Requirements 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 cor...

Page 9: ...ion Parameters 89 7 8 4 Communication Parameters 93 7 8 5 Firmware Update 94 7 8 6 Password Changing 95 8 Troubleshooting and Maintenance 96 8 1 Troubleshooting 96 8 2 Maintenance 104 8 2 1 Maintenanc...

Page 10: ......

Page 11: ...or any safety in struction in this manual When installing operating and maintaining the product comply with local laws and regulations The safety precautions in this manual are only supplements to lo...

Page 12: ...Connection Safety Before electrical connections please make sure that the inverter is not damaged otherwise it may cause danger Before electrical connections please make sure that the inverter switch...

Page 13: ...n the PV generation system must be firmly attached properly insulated and adequately dimensioned Check the positive and negative polarity of the PV strings and connect the PV con nectors to correspond...

Page 14: ...k the inverter status If the inverter indicator is off please wait until night to disconnect the DC switch If the inverter indicator is on directly disconnect the DC switch After the inverter is power...

Page 15: ...his manual If necessary contact SUNGROW for maintenance Oth erwise the losses caused is not covered by the warranty 1 6 Disposal Safety Please scrap the product in accordance with relevant local regul...

Page 16: ...ex cept for the tracking axis The inverter is only applicable to the scenarios described in the manual and cannot be used in other situations The intended usage of the inverter is illustrated in the f...

Page 17: ...2 2 Appearance The image shown here is for reference only The actual product received may differ No Name Description 1 LED indicator To indicate the current working state of the inverter 2 AC Wire Bo...

Page 18: ...arning symbols and QR code Dimensions The following figure shows the dimensions of the inverter figure 2 3 Dimensions of the Inverter in mm Weight Model Weight SG285HX SG320HX SG333HX SG350HX 116 kg 2...

Page 19: ...dicator The LED indicator on the front of the inverter indicates the working state of the inverter table 2 1 State description of the LED indicator LED color State Definition Blue On The device is con...

Page 20: ...age may still be present in AC side circuits after the indicator is off Pay atten tion to the electricity safety during operating 2 5 DC Switch The inverter is equipped with four DC switches which can...

Page 21: ...relay isolates the AC output of the inverter from the grid making the inverter safe from the grid in case of inverter failure or grid failure The AC SPD provides a discharge circuit for the AC side o...

Page 22: ...enabling the PID recovery function the ad verse effects caused by PID can be recovered and this function only works when the DC side of the inverter is voltage free Anti PID function and PID recovery...

Page 23: ...ti PID function or PID recovery function make sure the voltage polarity of the PV modules to ground meets requirement If there are any questions contact the PV module manufacturer or read the correspo...

Page 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...

Page 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...

Page 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...

Page 27: ...g 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 equipment before performing operations on...

Page 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...

Page 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...

Page 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...

Page 31: ...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 two i...

Page 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...

Page 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...

Page 34: ...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 600 kg No...

Page 35: ...erminals 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 Continue...

Page 36: ...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 mounting brac...

Page 37: ...the mounting bracket and dimensions after installation are as follows figure 4 2 Dimensions of inverter installed to mounting bracket figure 4 3 Distance from mounting bracket bottom to ground 4 5 1...

Page 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...

Page 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...

Page 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...

Page 41: ...31 A Wall B Expansion bolt C Mounting bracket step 5 Fix the baffle plate to the wall with the expansion bolts User Manual 4 Mechanical Mounting...

Page 42: ...te and mounting bracket mm End 4 5 3 Pole Mounting Tools Item Specification Phillips screwdriver M4 Marker Level Electric drill Drill bit 12 Wrench Opening 16 mm Confirm the need for other sizes of to...

Page 43: ...elf prepared step 1 Bury the column into the installation site Please skip this step if you need to install the inverter on a concrete post PV bracket etc by holding the post step 2 Assemble the mount...

Page 44: ...34 step 5 Use bolts to secure the pegboard to the U beam End 4 Mechanical Mounting User Manual...

Page 45: ...ans port If the installation position is not high enough skip this step step 2 Remove the bottom cushion and lift the inverter onto the mounting bracket making sure that the mounting ears fit well int...

Page 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...

Page 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...

Page 48: ...box for cable wiring through the standby grounding terminal D Tracker terminal Used for internal Tracker Tracker power wir ing to power the Tracker E Communica tion terminal COM1 For RS485 communicat...

Page 49: ...e cable 8 18 0 5 10 Recom mended 4 6 3 External ground ing cable Outdoor single core copper wire cable Sp S 2 4 AC cable One Wire per Phase with Multi core Cable refer to table 5 2 AC Cable Require me...

Page 50: ...70 400 Sp S 2 2 Outdoor three core copper aluminum wire cable 1 Outdoor PE cable 2 three core cable 40 75 PE cable 15 32 Note 1 A copper to aluminum adapter terminal is required when an aluminum cabl...

Page 51: ...0 copper aluminum wire S 120 185 Sp S 2 2 Outdoor three core alumi num wire cable 1 Outdoor PE cable 2 Note 1 A copper to aluminum adapter terminal is required when an aluminum cable is used For detai...

Page 52: ...inium cable figure 5 5 Aluminium cable terminal connection sequence 1 Copper to Aluminium adapter terminal 2 Flange nut 3 Aluminium cable Ensure that the selected terminal can directly contact with th...

Page 53: ...the grounding cable is less than 10 mm2 for copper wire or 16 mm2 for aluminum wire ensure that both the external protective grounding terminal and the AC side grounding terminal are reliably grounde...

Page 54: ...tment the inverter can be con nected to the grid Before connecting the inverter to the grid ensure the grid voltage and frequency comply with requirements for which refer to Technical Data Otherwise c...

Page 55: ...n 1 500V The line to line voltage on the HV side of the transformer should comply with the local power grid voltage A transformer with a tap changer on the HV side is recommended in order to keep con...

Page 56: ...binet and other branch circuit MCCBs thus the interior of the cabinet needs to be insulated A third party test report of the circuit breaking perform ance of the whole machine in an event of a short c...

Page 57: ...5 6 2 Requirements for OT DT Terminal OT DT terminals not included in the delivery scope are required for fixing AC cables to the terminal block Purchase the OT DT terminals according to the followin...

Page 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...

Page 59: ...late 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 sealing ring and...

Page 60: ...50 step 7 Fix cables with crimped OT DT terminals to corresponding terminals 5 Electrical Connection User Manual...

Page 61: ...ot less than 28 mm step 8 Close the protection cover step 9 Remove the limit rod and place it in place Close the junction block and tighten the two screws on its front cover with the hexagon socket wr...

Page 62: ...r Phase with Multi core Cable step 1 Disconnect the AC side circuit breaker and prevent it from inadvertent reconnection step 2 Loosen the two screws on the front cover of the junction box with the he...

Page 63: ...screws on the bottom sealing plate with the hexagon socket wrench provided and remove the bottom sealing plate The screws on the sealing plate are captive screws which will remain on the seal ing plat...

Page 64: ...54 step 5 Lead the cable with the protective layer removed through the sealing ring and fix the screws on the bottom sealing plate step 6 Open the protection cover 5 Electrical Connection User Manual...

Page 65: ...55 step 7 Fix cables with crimped OT DT terminals to corresponding terminals User Manual 5 Electrical Connection...

Page 66: ...Close the protection cover after fixing all cables to corresponding terminals step 9 Remove the limit rod and place it in place Close the junction block and tighten the two screws on its front cover...

Page 67: ...7 DC Cable Connection The PV string will generate lethal high voltage when exposed to sunlight Respect all safety instructions listed in relevant documents about PV strings User Manual 5 Electrical Co...

Page 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...

Page 69: ...may be 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 75: ...isy chain A Inverter B Data Logger C PC D Tracking system The length of the RS485 cable should be no longer than 1 000 m If multiple inverters are connected to the data logger the number of permissibl...

Page 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...

Page 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...

Page 78: ...a waterproof plug End 5 10 Dry Contact Connection COM2 Communication terminal COM2 is optional subject to actual product received 5 10 1 Interface Description The inverter communication terminal COM2...

Page 79: ...act and PGND contact are shorted by external controlled switch The ex ternal switch can be configured as normally open contact or normally closed contact the in verter will immediately stop The dry co...

Page 80: ...ED indicators or other equipment to indicate whether the inverter is in the faulty state figure 5 8 Normal open contact figure 5 9 Normal close contact Devices connected to the relay should comply wit...

Page 81: ...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...

Page 82: ...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...

Page 83: ...tion distance from the box type substation to the inverter is If there is one cable per phase with single core cable the maximum communication dis tance is 800 m Bind three phase cables with cable tie...

Page 84: ...gth difference must be smaller than 2m The Data Logger is an optional device that can be ordered from SUNGROW The Data Logger conducts data communication by directly using the AC output cable of the i...

Page 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...

Page 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...

Page 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...

Page 88: ...he App to enter the login page tap Local Access at the bottom of the page to go to the next page step 2 Establish the Bluetooth connection by either of the two following ways If the LED indicator flas...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 106: ...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...

Page 107: ...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...

Page 108: ...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...

Page 109: ...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 return...

Page 110: ...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...

Page 111: ...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...

Page 112: ...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...

Page 113: ...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...

Page 114: ...5 A 3 It is prohibited to power up the inverter again Please contact Sungrow Customer Service 8 2 Maintenance 8 2 1 Maintenance Notices Risk of inverter damage or personal injury due to incorrect ser...

Page 115: ...t board unnecessarily Observe the regulations to protect against electrostatic and wear an anti static wrist strap 8 2 2 Disconnecting the Inverter Danger of burns Even if the inverter is shut down it...

Page 116: ...all cable are firmly connected in place Check whether a cable is damaged especially the part contacting the met al enclosure Six months to a year 8 2 4 Cleaning Air Inlet and Outlet A significant amou...

Page 117: ...y fans and replace the broken fans in a timely manner The operation procedure is as follows step 1 Stop the inverter see 8 2 2 Disconnecting the Inverter step 2 Loosen the screw on the sealing plate o...

Page 118: ...Clean them with a soft brush or vacuum cleaner and replace them when necessary If there is not enough space pull out part of the fans and remove the screws be tween the two fans End 8 Troubleshooting...

Page 119: ...lectrical Connection for the inverter disconnection of all cables in reverse steps In particular when removing the DC connector use an MC4 Evo2 wrench to loosen the locking parts and install waterproo...

Page 120: ...the inverter may cause environmental pollution Please dispose of them in accordance with the disposal regulations for electronic waste applicable at the installation site 8 Troubleshooting and Mainte...

Page 121: ...t current per MPPT 40 A optional 30 A for 16 MPPT inputs Max PV input current 12 40 A Max DC short circuit cur rent per MPPT 60 A 60 A Output AC AC output power 285 kVA 40 352 kVA 30 320 kVA 40 295 kV...

Page 122: ...1136 870 361 mm Weight 116 kg Isolation method Transformerless Degree of protection IP66 Power consumption at night 6 W Operating ambient temper ature range 30 to 60 Allowable relative humidity range...

Page 123: ...5 kVA 50 Max AC output current 240 5 A 254 A Nominal AC voltage 3 PE 800 V AC voltage range 640 920V Nominal grid frequency Grid frequency range 50 Hz 45 55 Hz 60 Hz 55 65 Hz THD 3 at nominal power DC...

Page 124: ...orced air cooling Max operating altitude 4000 m 3000 m derating 4000 m 3000 m derating 13123 ft 9843 ft derating Display LED Bluetooth App Communication RS485 PLC DC connection type MC4 Evo2 Max 6 mm...

Page 125: ...maximum wiring distance Number of inverter Maximum wiring distance unit m 16AWG 1 31mm2 17AWG 1 026mm2 1 13030 10552 2 6515 5276 3 4343 3517 4 3258 2638 5 2606 2110 6 2172 1759 7 1861 1507 8 1629 131...

Page 126: ...riod to repair the faulty device Exclusion of Liability In the following circumstances SUNGROW has the right to refuse to honor the quality guarantee The free warranty period for the whole machine com...

Page 127: ...to provide you the best assistance Model of the device Serial number of the device Fault code name Brief description of the problem For detailed contact information please visit https en sungrowpower...

Page 128: ...www sungrowpower com Sungrow Power Supply Co Ltd...

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