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Sungrow SG285HX User Manual

Pv grid-connected inverter
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User Manual
PV Grid-Connected Inverter
SG285HX / SG320HX / SG333HX / SG350HX
SG285HX /
Grid-Connected InverterUser
ManualSG285_320_333_350HX-
UEN-Ver17-202209
SG285_320_333_350HX-UEN-Ver17-202209

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Summary of Contents for Sungrow SG285HX

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

  • Page 3: All Rights Reserved

    Software Licenses • It is prohibited to use data contained in firmware or software developed by SUNGROW, in part or in full, for commercial purposes by any means. • It is prohibited to perform reverse engineering, cracking, or any other operations that...

  • Page 4: About This Manual

    Please read this manual carefully before using the product and keep it properly at a place for easy access. All contents, pictures, marks, and symbols in this manual are owned by SUNGROW. No part of this document may be reprinted by the non-internal staff of SUNGROW without written authorization.
  • Page 5 Symbols This manual contains important safety instructions, which are highlighted with the following symbols, to ensure personal and property safety during usage, or to help optimize the prod- uct performance in an efficient way. Please carefully understand the meaning of these warning symbols to better use the manual. Indicates high-risk potential hazards that, if not avoided, may lead to death or seri- ous injury.

  • Page 7: Table Of Contents

    Contents All Rights Reserved .....................I About This Manual......................II 1 Safety Instructions ....................1 1.1 Unpacking and Inspection ................1 1.2 Installation Safety ...................2 1.3 Electrical Connection Safety................2 1.4 Operation Safety ....................4 1.5 Maintenance Safety ..................4 1.6 Disposal Safety ....................5 2 Product Description ..................6 2.1 System Introduction ..................6 2.2 Product Introduction..................7...
  • Page 8 4.4.2 Hoisting Transport................24 4.5 Installing the mounting-bracket ..............26 4.5.1 Bracket-Mounted Installation..............27 4.5.2 Wall-Mounted Installation..............29 4.5.3 Pole-Mounting ..................32 4.6 Installing the Inverter..................35 5 Electrical Connection ..................36 5.1 Safety Instructions ..................36 5.2 Terminal Description ..................37 5.3 Electrical Connection Overview ..............38 5.4 Crimp OT / DT terminal .................42 5.5 External Protective Grounding Connection .............43 5.5.1 External Protective Grounding Requirements ........43 5.5.2 Connection Procedure.................43...
  • Page 9 6.1 Inspection before Commissioning ..............75 6.2 Commissioning Procedure ................75 7 iSolarCloud App ....................77 7.1 Brief Introduction ..................77 7.2 Installing the App ..................77 7.3 Login ......................78 7.3.1 Requirements ..................78 7.3.2 Login Procedure .................78 7.4 Function Overview..................81 7.5 Home page ....................81 7.6 Run Information....................83 7.7 Records .......................85 7.8 More......................87 7.8.1 System Parameters................87...

  • Page 11: Safety Instructions

    Perform operations considering ac- tual onsite conditions. • SUNGROW shall not be held liable for any damage caused by violation of gen- eral safety operation requirements, general safety standards, or any safety in- struction in this manual.

  • Page 12: Installation Safety

    1 Safety Instructions User Manual Installation Safety Make sure there is no electrical connection before installation. Before drilling, avoid the water and electricity wiring in the wall. Improper installation may cause personal injury! • If the product supports hoisting transport and is hoisted by hoisting tools, no one is allowed to stay under the product.
  • Page 13 User Manual 1 Safety Instructions Danger to life due to a high voltage inside the inverter! • Be sure to use special insulation tools during cable connections. • Note and observe the warning labels on the product, and perform operations strictly following the safety instructions.

  • Page 14: Operation Safety

    1 Safety Instructions User Manual Operation Safety Please comply with the following requirements when the product is running: • Do not touch its enclosure. • It is strictly forbidden to plug and unplug any connector on the inverter. • Do not touch any wiring terminal of the inverter. Otherwise, electric shock may occur.

  • Page 15: Disposal Safety

    1 Safety Instructions To avoid the risk of electric shock, do not perform any other maintenance opera- tions beyond this manual. If necessary, contact SUNGROW for maintenance. Oth- erwise, the losses caused is not covered by the warranty. Disposal Safety Please scrap the product in accordance with relevant local regulations and stand- ards to avoid property losses or casualties.

  • Page 16: Product Description

    Monocrystalline silicon, polycrystalline silicon and thin-film PV strings without grounding Inverter SG285HX / SG320HX / SG333HX / SG350HX Raises the output voltage of the inverter to a level that meets Transformer the requirements of the grid The grid form supported by the inverter is shown in the figure...

  • Page 17: Product Introduction

    User Manual 2 Product Description Product Introduction Model Description The model description is as follows (take SG350HX as an example). Appearance The following figure shows the appearance of the inverter. figure 2-2 Appearance The image shown here is for reference only. The actual product received may differ. Description Name To indicate the current working state of the inverter.

  • Page 18: Symbols On The Product

    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 Symbols on the Product Symbol Explanation Do not dispose of the inverter together with household waste.

  • Page 19: Led Indicator

    User Manual 2 Product Description Symbol Explanation Disconnect the inverter from all the external power sources be- fore maintenance! Burn danger due to the hot surface that may exceed 60℃. Danger to life due to high voltages! Do not touch live parts for 25 minutes after disconnection from the power sources.

  • Page 20: Dc Switch

    2 Product Description User Manual LED color State Definition A fault occurs and the device cannot connect to the grid. The Bluetooth connection is established, data commu- Twinkling nication in process, and a system fault occurs. Both the AC and DC sides are powered down. Gray Voltage may still be present in AC side circuits after the indicator is off.

  • Page 21: Function Description

    User Manual 2 Product Description 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 circuit for the DC side over-voltage power to prevent it from damaging the internal circuits of the inverter.
  • Page 22 2 Product Description User Manual After communication connection is established, users can view inverter information or set in- verter parameters through the iSolarCloud. Protection Function The protective functions are integrated in the inverter, including anti-island protection, LVRT, DC reverse connection protection, AC short circuit protection, leakage current protection, surge protection, etc.
  • Page 23 User Manual 2 Product Description • Make sure the inverter is applied to an IT system before enabling the anti-PID function. • PID recovery and Q at night can be enabled at the same time, but can not work at the same time. In the IT system, anti-PID and Q at night can work at the same time.

  • Page 24: Unpacking And Storage

    • Check the inner contents for damage after unpacking. Contact SUNGROW or the transport company in case of any damage or incompleteness, and provide 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.
  • Page 25 User Manual 3 Unpacking and Storage step 2 Remove the packing box upwards. step 3 Remove the surrounding paper angle beads. step 4 Remove the upper cushion.

  • Page 26: Inverter Storage

    3 Unpacking and Storage User Manual - - End Inverter Storage Proper storage is required if the inverter is not installed immediately. • Store the inverter in the original packing case with the desiccant inside. • The storage temperature must be always between -40℃ and +70℃, and the storage rel- ative humidity must be always between 0 and 95 %, non-condensing.

  • Page 27: Mechanical Mounting

    Mechanical Mounting Respect all local standards and requirements during mechanical installation. Safety during Mounting Make sure there is no electrical connection before installation. Before drilling, avoid the water and electricity wiring in the wall. Poor installation environment will affect system performance! •...

  • Page 28: Environment Requirements

    The ambient temperature and relative humidity must meet the following requirements. • Please consult SUNGROW before installing inverters outdoors in salt stress areas. Salt stress areas mainly refer to coastal areas that are within 500 meters from the coast. The deposition of salt fog varies largely with nearby seawater characteristics, sea wind, pre- cipitation, relative humidity, terrain, and forest coverage.

  • Page 29: Angle Requirements

    User Manual 4 Mechanical Mounting 4.2.3 Angle Requirements Install 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: Clearance Requirements

    4 Mechanical Mounting User Manual In case the installation site is a level surface, mount the inverter to the bracket to meet the mounting angle requirements, as shown in the figure below. Take the following items into account when designing the bracket scheme: •...
  • Page 31 User Manual 4 Mechanical Mounting The AC cable is vertically led into the AC terminal, and the straight length is higher than 200 mm. In case of multiple inverters, reserve specific clearance between the inverters. Back-to-Back Installation When installing inverters back-to-back, the distance between every two inverters should be at least 600 mm (recommended).

  • Page 32: Installation Tools

    4 Mechanical Mounting User Manual Installation Tools Installation tools include but are not limited to the following recommended ones. If necessary, use other auxiliary tools on site. table 4-1 Tool specification Goggles Earplugs Dust mask Protective gloves Insulated shoes Utility knife Slotted screwdriver Phillips screwdriver (M2, M3, M6)

  • Page 33: Moving The Inverter

    User Manual 4 Mechanical Mounting MC4–Evo2 terminal MC4–Evo2 terminal Multimeter Vacuum cleaner crimping pliers wrench (≥ 1500 Vdc) 4–6mm Scissors Hexagon socket Electric drill wrench (φ12) (T30) Moving the Inverter Move the inverters by carrying them manually or using a hoisting tool based on site conditions.

  • Page 34: Hoisting Transport

    4 Mechanical Mounting User Manual When handling the inverter, do not remove the cushion to avoid damage to the housing or bottom terminals. 4.4.2 Hoisting Transport Tools Device Requirement Source Name Crane Load bearing capacity ≥ 180 kg Not included in the scope of delivery Not included in the Lifting ring...
  • Page 35 User Manual 4 Mechanical Mounting When handling the inverter, do not remove the cushion to avoid damage to the housing or 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.

  • Page 36: Installing The Mounting-Bracket

    4 Mechanical Mounting User Manual step 4 Remove the lifting rings and reassemble the sealing screws released in Step 1. Keep the inverter balanced throughout the hoisting process and avoid collisions with walls or other objects. Stop hoisting in the event of severe weather, such as heavy rain, thick fog, or strong wind.

  • Page 37: Bracket-Mounted Installation

    User Manual 4 Mechanical Mounting figure 4-1 Dimensions of mounting-bracket Install the inverter to 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 Bracket-Mounted Installation Tools...
  • Page 38 4 Mechanical Mounting User Manual Item Specification Phillips screwdriver Marker Level Electric drill Drill bit: φ12 Wrench Opening: 16 mm Spare parts Quantity Specification Item Source Delivery scope Grub screw M4×10 Bolt assembly Delivery 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 ground shown in the figure.

  • Page 39: Wall-Mounted Installation

    User Manual 4 Mechanical Mounting (A) Mounting-bracket (B) Full threaded bolt (C) Metal bracket (D) Flat washer (E) Spring washer (F) Hex nuts - - End 4.5.2 Wall-Mounted Installation Tools Item Specification Phillips screwdriver / electric screw driver Marker Level Hammer drill Drill bit: φ12 Wrench...
  • Page 40 4 Mechanical Mounting User Manual step 2 Level the assembled mounting-bracket by using the level, and mark the positions for drilling holes on the installation site. step 3 Drill the holes by using a hammer drill. Insert the expansion bolts into the holes and secure them with a rubber hammer.
  • Page 41 User Manual 4 Mechanical Mounting (A) Wall (B) Expansion bolt (C) Mounting-bracket step 5 Fix the baffle plate to the wall with the expansion bolts.

  • Page 42: Pole-Mounting

    4 Mechanical Mounting User Manual figure 4-4 Dimensions of baffle plate (mm) figure 4-5 Relative distance between baffle plate and mounting-bracket (mm) - - End 4.5.3 Pole-Mounting Tools Item Specification Phillips screwdriver — Marker — Level Electric drill * Drill bit: φ12 Wrench Opening: 16 mm * Confirm the need for other sizes of tools based on the bolts of the matching clamps.
  • Page 43 User Manual 4 Mechanical Mounting Quantity Specification Item Source Delivery scope Grub screw M4×10 Bolt assembly Delivery scope Nut assembly Self-prepared U-shaped steel — Self-prepared Determined by column Clamp Self-prepared specifications 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.
  • Page 44 4 Mechanical Mounting User Manual step 5 Use bolts to secure the pegboard to the U-beam. - - End...

  • Page 45: Installing The Inverter

    User Manual 4 Mechanical Mounting Installing the Inverter Tools Item Specification Phillips screwdriver Spare parts Item Quantity Specification Source Grub screw M6×65 Delivery scope step 1 Hoist the inverter to the installation position when necessary (refer to "4.4.2 Hoisting Trans- port").

  • Page 46: Electrical Connection

    Electrical Connection 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. •...

  • Page 47: Terminal Description

    User Manual 5 Electrical Connection • All vacant terminals must be covered with waterproof covers to prevent affect- ing the protection rating. • When the wiring is completed, seal the gap of cable inlet and outlet holes with fireproof / waterproof materials such as fireproof mud to prevent foreign matter or moisture from entering and affecting the long-term normal operation of the inverter.

  • Page 48: Electrical Connection Overview

    5 Electrical Connection User Manual figure 5-2 Terminal Description (Two Wires per Phase with Multi-core Cable) * The image shown here is for reference only. The actual product received may differ. Item Terminal Mark Note 24 / 28 / 32, PV connector PV terminals + / - The number of PV terminals varies, subject to...
  • Page 49 User Manual 5 Electrical Connection (A) PV string (B) Inverter (C) Tracking control box (D) Grid (E) Monitoring device (F) AC circuit breaker Note: S is the cross-sectional area of the AC cable, and Sp is the cross-sectional area of the grounding cable.
  • Page 50 5 Electrical Connection User Manual figure 5-3 Sealing Plate for One Wire per Phase with Multi-core Cable table 5-2 AC Cable Requirements(One Wire per Phase with Multi-core Cable) Specification Type Cross-sectional Area Cable Diameter(mm) Outdoor four-core copper / copper wire: four-core cable: 40 ~ aluminum wire cable S: 70 ~ 185...
  • Page 51 User Manual 5 Electrical Connection figure 5-4 Sealing Plate for Two Wires per Phase with Multi-core Cable table 5-3 AC Cable Requirements(Two Wires per Phase with Multi-core Cable) Specification Type Cross-sectional Area Cable Diameter(mm) Outdoor three-core copper wire cable copper/aluminum wire: three-core cable: 47 ~ Outdoor PE cable S: 120 ~ 185...

  • Page 52: Crimp Ot / Dt Terminal

    5 Electrical Connection User Manual Crimp OT / DT terminal 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.

  • Page 53: External Protective Grounding Connection

    AC side grounding terminal are reliably grounded. The grounding connection can be made by other means if they are in accordance with the local standards and regulations, and SUNGROW shall not be held liable for the possible consequences.

  • Page 54: Ac Cable Connection

    5 Electrical Connection User Manual step 2 Remove the screw on the grounding terminal 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- ery, and do not need to be prepared.
  • Page 55 The apparent power of the inverter should never exceed the power of the transformer. The maximum AC current of all inverters connected in parallel must be taken into ac- count. If more than 15 inverters are connected to the grid, contact SUNGROW. •...
  • Page 56 5 Electrical Connection User Manual • Take ambient temperature, relative humidity, altitude, air quality, and other environmental conditions into account when selecting and installing the transformer. • The overall technical requirements of the box-type LV cabinet are as follows: – The breaking capacity of the branch molded case circuit breaker (MCCB) and air cir- cuit breaker (ACB) of the box-type LV cabinet should be greater than the short circuit current at the LV side of the transformer.

  • Page 57: Requirements For Ot/Dt Terminal

    User Manual 5 Electrical Connection – The string serial communication box EMU200 requires an external power supply of 220 Vac, so a power supply port and 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 scope) are required for fixing AC cables to the terminal block.

  • Page 58: Cable

    5 Electrical Connection User Manual OT/DT Terminal of PE Wire • Specification: M12 5.6.3 Connection Procedure of One Wire per Phase with Multi-core Cable This section introduces the connection steps with four-core cable as an example, and the wiring method for three-core cable is the same. step 1 Disconnect the AC-side circuit breaker and prevent it from inadvertent reconnection.
  • Page 59 User Manual 5 Electrical Connection The screws on the sealing plate are captive screws, which will remain on the seal- ing plate when 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 sealing ring and fix the screws on the bottom sealing plate.
  • Page 60 5 Electrical Connection User Manual step 7 Fix cables with crimped OT/DT terminals to corresponding terminals.
  • Page 61 User Manual 5 Electrical Connection Ensure that the depth L of the socket used is not 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 wrench provided.

  • Page 62: Connection Procedure Of Two Wires Per Phase With Multi-Core

    5 Electrical Connection User Manual - - End When a separate single-core cable is used as the PE cable, lead it into the junction box through the standby grounding terminal. 5.6.4 Connection Procedure of Two Wires per Phase with Multi-core Cable step 1 Disconnect the AC-side circuit breaker and prevent it from inadvertent reconnection.
  • Page 63 User Manual 5 Electrical Connection The screws on the front cover of the junction box are captive screws, which will re- main on the front cover when the cover is open to avoid screw loss. step 3 Loosen the screws on the bottom sealing plate with the hexagon socket wrench provided and remove the bottom sealing plate.
  • Page 64 5 Electrical Connection User Manual 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.
  • Page 65 User Manual 5 Electrical Connection step 7 Fix cables with crimped OT/DT terminals to corresponding terminals.
  • Page 66 5 Electrical Connection User Manual 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. 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 wrench provided.

  • Page 67: Dc Cable Connection

    User Manual 5 Electrical Connection - - End 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.

  • Page 68: Pv Input Configuration

    The damage caused by this is not covered by the warranty. • Electric arc or contactor over-temperature may occur if the PV connectors are not firmly in place, and SUNGROW shall not be held liable for any damage caused. •...

  • Page 69: Assembling The Pv Connectors

    • Do not connect the AC circuit breaker before finishing electrical connection. SUNGROW provides corresponding PV connectors in the scope of delivery for quick connection of PV inputs. To ensure IP66 protection, use only the supplied connector or the connector with the same ingress of protection.
  • Page 70 5 Electrical Connection User Manual step 2 Assemble the cable ends with the crimping pliers. 1: Positive crimp contact 2：Negative crimp contact step 3 Lead the cable through cable gland, and insert the crimp contact into the insulator until it snaps into place.

  • Page 71: Installing The Pv Connector

    User Manual 5 Electrical Connection If the PV polarity is reversed, the inverter will be in a fault or alarm state and will not operate normally. - - End 5.7.3 Installing the PV Connector step 1 Ensure that the DC switch is in "OFF" position. Otherwise, manually turn it to "OFF". step 2 Check the cable connection of 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.

  • Page 72: Wiring Of Tracking System Power Cable (Optional)

    5 Electrical Connection User Manual step 4 Follow the foregoing steps to connect PV connectors of other PV strings. step 5 Seal any unused PV terminal with a terminal cap. - - End Wiring of Tracking System Power Cable (Optional) step 1 Refer to step 1 to step 2 described in"5.6.3 Connection Procedure of One Wire per Phase with Multi-core...
  • Page 73 User Manual 5 Electrical Connection step 4 Stack the OT terminals on the OT/DT terminal of the AC cables, and fix the 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.

  • Page 74: Rs485 Connection(Com1)

    5 Electrical Connection User Manual Protection devices required between the inverter and the tracking system control box: disconnector switch (≥ 800 Vac) + fuse (16A, gM). Length of the cable connecting the internal wiring terminal of the inverter and the fuse should be less than 2.5 m.

  • Page 75: Connection Procedure

    User Manual 5 Electrical Connection (A) Inverter (B) Data Logger (C) PC Multi-inverter Communication System In case of multiple inverters, all the inverters can be connected via RS485 cables in the daisy chain manner. The communication cable of the tracking system can be connected to the port RS485_2 of any inverter in the daisy chain.
  • Page 76 5 Electrical Connection User Manual 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 according to the cable outer diameter. Lead the cable through the swivel nut, seal and on-site making of wire parts.
  • Page 77 User Manual 5 Electrical Connection 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 appropriate torque. step 7 Remove the waterproof lid from the communication terminal COM1.

  • Page 78: Dry Contact Connection(Com2)

    5 Electrical Connection User Manual step 8 Insert the connector into the communication terminal. step 9 Seal the vacant connector seal with 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 is located at the bottom of the inverter, as shown in the figure below.

  • Page 79: Dry Contact Function

    User Manual 5 Electrical Connection table 5-6 Communication terminal COM2 definition Description Port Definition emergency stop dry contact PGND fault output dry contact 5.10.2 Dry Contact Function DI terminal (emergency stop dry contact): the dry contact can be configured to be an emergency stop contact.

  • Page 80: Connection Procedure

    5 Electrical Connection User Manual DO terminal (fault output dry contact): the relay can be set to fault alarm output, and user 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 indicators or other equipment to indicate whether the inverter is in the faulty state.
  • Page 81 User Manual 5 Electrical Connection 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 according to the cable outer diameter. Lead the cable through the swivel nut, seal and on-site making of wire parts.
  • Page 82 5 Electrical Connection User Manual 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 appropriate torque. step 7 Remove the waterproof lid from the communication terminal COM2.

  • Page 83: Plc Communication Connection

    5.11 PLC Communication Connection With a PLC communication module built inside, the inverter can communicate with the Data Logger provided by SUNGROW. For specific wiring method, refer to the user manual for the data logger. The maximum PLC communication distance from the box-type substation to the inverter is: •...
  • Page 84 AC cables should be the same. If not, the length 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 inverter and thus saves the trouble to lay and maintain the special communication cables.

  • Page 85: Commissioning

    Commissioning Inspection before Commissioning Check the following items before starting the inverter: • All equipment has been reliably installed. • DC switch(es) and AC circuit breaker are in the "OFF" position. • The ground cable is properly and reliably connected. •...
  • Page 86 6 Commissioning User Manual 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...

  • Page 87: Isolarcloud App

    iSolarCloud App Brief Introduction The iSolarCloud App can establish communication connection to the inverter via the Blue- tooth, thereby achieving near-end maintenance on the inverter. Users can use the App to view basic information, alarms, and events, set parameters, or download logs, etc. Screenshots in this manual are based on the Android system V2.1.6 , and the ac- tual interfaces may differ.

  • Page 88: Login

    7 iSolarCloud App User Manual Login 7.3.1 Requirements The following requirements should be met: • The AC or DC side of the inverter is powered-on. • The mobile phone is within 5 meters away from the inverter and there are no obstructions in between.
  • Page 89 User Manual 7 iSolarCloud App figure 7-1 Bluetooth Connection step 3 Enter the identity verification screen after the Bluetooth connection is established.
  • Page 90 If the dis- tributor is unable to provide the required information, contact SUNGROW. step 4 If the inverter is not initialized, you will enter the quick setting screen of initializing protection parameter.

  • Page 91: Function Overview

    User Manual 7 iSolarCloud App - - End Function Overview The App provides parameter viewing and setting functions, as shown in the following figure. figure 7-4 App function tree map Home page After login, the home page is as follows:...
  • Page 92 7 iSolarCloud App User Manual figure 7-5 Home page table 7-1 Home Page Description Designation Description System date and time of the inverter Date and time Present operation state of the inverter For details, refer to Inverter state "table 7-2 Description of Inverter State".

  • Page 93: Run Information

    User Manual 7 iSolarCloud App table 7-2 Description of Inverter State Description State After being energized, inverter tracks the PV arrays’ maximum power point (MPP) and converts the DC power into AC power. This is the nor- mal operation mode. Stop Inverter is stopped.
  • Page 94 7 iSolarCloud App User Manual table 7-4 Run information Classifica- Description Parameter name tion String n Voltage The input voltage of the n String n Current The input current of the n Information Total grid-connected runtime Daily grid-connected runtime Negative to ground Inverter DC side negative to ground voltage value voltage Voltage between the positive and negative poles...

  • Page 95: Records

    User Manual 7 iSolarCloud App Records Tap Records on the navigation bar to enter the screen showing event records, as shown in the following figure. figure 7-6 Records Fault Alarm Record Tap Fault Alarm Record to enter the screen, as shown in the following figure. figure 7-7 Fault Alarm Record Click to select a time segment and view corresponding records.
  • Page 96 7 iSolarCloud App User Manual figure 7-9 Power Curve The App displays power generation records in a variety of forms, including daily power gen- eration graph, monthly power generation histogram, annual power generation histogram and total power generation histogram. table 7-5 Explanation of power yields records Description Parameter Show the power output from 5 am to 11 pm in a single day.

  • Page 97: More

    User Manual 7 iSolarCloud App More Tap More on the navigation bar to enter the corresponding screen, as shown in the following figure. figure 7-10 More 7.8.1 System Parameters Tap Settings→System Parameters to enter the corresponding screen, as shown in the fol- lowing figure.
  • Page 98 7 iSolarCloud App User Manual figure 7-12 Running Time PID Parameters Tap Settings→Operation Parameters→PID Parameters to enter the corresponding screen, on which you can set "PID Parameters". figure 7-13 PID Setting table 7-6 PID Parameter Description Description Parameter Availability of Q at If this switch is turned on, PID recovery and Q at night can be en- Night during PID abled at the same time, but can not work at the same time.

  • Page 99: Power Regulation Parameters

    User Manual 7 iSolarCloud App Please ensure that the inverter is equipped with DC PID before setting PID parame- ters. If it is equipped with AC PID, please refer to the EMU200A user manual for PID parameter settings. The PID type of the inverter is subject to the actually received inverter.
  • Page 100 7 iSolarCloud App User Manual Definition/Setting Range Parameter Description Active power rising The rise rate of inverter active 1%/min~6000%/min gradient power per minute. Switch for enabling/disabling Active power setting the function of saving output Enable/Disable persistence limited power. The switch for limiting output Active power limit Enable/Disable power.
  • Page 101 User Manual 7 iSolarCloud App In the Qt mode, system rated reactive power is fixed, and the system injects reactive power according to the delivered reactive power ratio. The Reactive Power Ratio is set through the App. The setting range of the reactive power ratio is 0~100% or 0~-100%, corresponding to the ranges of inductive and capacitive reactive power regulation respectively.
  • Page 102 7 iSolarCloud App User Manual figure 7-15 Q(P) Curve “Q(U)” Mode table 7-10 “Q(U)” Mode Parameter Descriptions: Explanation Range Parameter Switch for enabling/disabling reactive Reactive response Enable/Disable response Reactive response Completion time of reactive response 0.1s~600.0s time Select corresponding curve according to lo- Q(U) curve A, B, C cal regulations...

  • Page 103: Communication Parameters

    User Manual 7 iSolarCloud App Explanation Range Parameter QU_ExitPower Active power for Q(U) function deactivation 1% ~ 20% Unconditional activation/deactivation of Q Yes / No / Yes, QU_EnableMode (U) function Limited by PF QU_Limited PF PF value for Q(U) function activation 0~1.00 Value * Curve C is reserved and consistent with Curve A currently.

  • Page 104: Firmware Update

    7 iSolarCloud App User Manual figure 7-18 MPLC Parameters table 7-12 MPLC Parameters Range Parameter Band Num Band1, Band2 Array ID 1–255 Winding ID 1–10 7.8.5 Firmware Update To avoid download failure due to poor on-site network signal, it is recommended to download the firmware package to the mobile device in advance.

  • Page 105: Password Changing

    User Manual 7 iSolarCloud App step 9 Wait for the file to be uploaded. When the upgrade is finished, the interface will inform you of 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.

  • Page 106: Troubleshooting And Maintenance

    App or the LCD. Modify the overvoltage protection values with the con- sent of the local electric power operator. 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 107 2. Check whether the protection parameters are appropriately set via the App or the LCD. 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 108 App or the LCD. 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. 1. Check whether the corresponding string is of reverse polarity.
  • Page 109 3. Check if the DC fuse is damaged. If so, replace Alarm the fuse. 4. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the alarm persists. *The code 548 to code 563 are corresponding to string 1 to string 16 respectively.
  • Page 110 If so, replace the dam- aged cable and secure terminals to ensure a reli- able connection. 5. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. 1. Check whether the AC cable is correctly connected.
  • Page 111 2. Reconnect the communication cable of the cation Abnormal meter. Alarm 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the alarm persists. 1. Check whether the output port is connected to actual grid. Disconnect it from the grid if so.
  • Page 112 Close the AC and DC switches in turn 15 248–255, 300– minutes later and restart the system. 322, 324–328, 3. Contact Sungrow Customer Service if the pre- 401–412, 600– ceding causes are ruled out and the fault persists. 603, 605, 608, 612, 616, 620, 622–624, 800,...
  • Page 113 Close the AC and DC switches in turn 15 364-395 minutes later and restart the system. Overvoltage Fault 2. If the fault persists, please contact Sungrow Power Customer Service. 1. Check whether the number of PV modules of the corresponding string is less than other strings.

  • Page 114: Maintenance

    3. Do not reinsert the faulty strings before the grounding fault is cleared; 4. If the fault is not caused by the foregoing rea- sons and still exists, contact Sungrow Customer Service. 1. It is prohibited to disconnect the DC switch when the DC current is greater than 0.5 A when...

  • Page 115: Disconnecting The Inverter

    To avoid the risk of electric shock, do not perform any other maintenance opera- tions beyond this manual. If necessary, contact SUNGROW for maintenance. Oth- erwise, the losses caused is not covered by the warranty.

  • Page 116: Routine Maintenance

    8 Troubleshooting and Maintenance User Manual 8.2.3 Routine Maintenance Item Method Period Check the temperature and dust of the inverter. Clean the inverter enclo- Six months to a year sure if necessary. Device Clean (depend on the dust con- Check if the air inlet and outlet are tents in air) normal.
  • Page 117 User Manual 8 Troubleshooting and Maintenance Fans inside the inverter are used to cool the inverter during operation. If the fans do not op- erate normally, the inverter may not be cooled down and inverter efficiency may decrease. Therefore, it is necessary to clean dirty 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...
  • Page 118 8 Troubleshooting and Maintenance User Manual step 5 Pull out the fans. 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.

  • Page 119: Inverter Disposal

    User Manual 8 Troubleshooting and Maintenance Inverter Disposal 8.3.1 Dismantling the Inverter Risk of burn injuries and electric shock! After the inverter is powered off for 25 minutes, measure the voltage and current with professional instrument. Only when there is no voltage nor current can opera- tors who wear protective equipment operate and maintain the inverter.
  • Page 120 8 Troubleshooting and Maintenance User Manual Some parts of the inverter may cause environmental pollution. Please dispose of them in accordance with the disposal regulations for electronic waste applicable at the installation site.

  • Page 121: Appendix

    Appendix Technical Data Parameters SG285HX SG320HX Input (DC) Max. PV input voltage 1500 V 1500 V Min. PV input voltage / 500 V / 550 V 500 V / 550 V Startup input voltage Nominal PV input voltage 1080 V...
  • Page 122 9 Appendix User Manual Parameters SG285HX SG320HX Max. efficiency / European 99.02 % / 98.8 % efficiency Protection DC reverse connection protection AC short circuit protection Leakage current protection Grid monitoring Ground fault monitoring DC switch / AC switch Yes / No...
  • Page 123 User Manual 9 Appendix Parameters SG333HX SG350HX Min. PV input voltage / 500 V / 550 V Startup input voltage Nominal PV input voltage 1080 V MPP voltage range 500 V – 1500 V No. of independent MPP 12 (optional: 16) 12 (optional: 14/16) inputs Max.

  • Page 124: Wring Distance Of Di Dry Contact

    9 Appendix User Manual Parameters SG333HX SG350HX PV string current monitoring Q at night function Anti-PID and PID recovery Optional function Surge protection DC Type II / AC Type II General Data 1136*870*361 mm (44.7'' * Dimensions (W*H*D) 1136 * 870 * 361 mm 34.3'' * 14.2'') Weight ≤...
  • Page 125 User Manual 9 Appendix refers to the cable length in one direction between the DI dry contact terminal of the k verter and the corresponding terminal of the (k-1) inverter. table 9-1 Correspondence between number of inverters and maximum wiring distance Maximum wiring distance(unit:m) Number of inverter...

  • Page 126: Quality Assurance

    • The customer shall give SUNGROW a reasonable period 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/components has expired.
  • Page 127 User Manual 9 Appendix We need the following information 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.com/contactUS.
  • Page 128 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...

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