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Huawei SUN2000-33KTL-US, User Manual

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Huawei SUN2000-33KTL-US User Manual Download Page 47

SUN2000-(33KTL, 36KTL, 40KTL)-US 
User Manual 

5 Connecting Cables 

 

Issue 07 (2019-06-20) 

Copyright © Huawei Technologies Co., Ltd. 

40 

 

5 

Connecting Cables 

Precautions 

 

 

Before connecting cables, ensure that the two DC switches on the inverter are OFF. Otherwise, 
the high voltage of the inverter may result in electric shocks. 

 

 

To prevent poor cable connection due to overstress, it is recommended that the cables be bent 
and reserved, and then connected to the appropriate ports. 

 

The cable colors shown in the electrical connection drawings provided in this chapter are for reference 
only. Select cables in accordance with local cable specifications (green-and-yellow wires are used for 
grounding only). 

5.1 Preparing OT Terminals 

Figure 5-1

 shows how to prepare an OT terminal. 

 

Summary of Contents for SUN2000-33KTL-US

Page 1: ...SUN2000 33KTL 36KTL 40KTL US User Manual Issue 07 Date 2019 06 20 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...stomer All or part of the products services and features described in this document may not be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this document is subject to ...

Page 3: ...chnicians Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Indicates an imminently hazardous situation which if not avoided will result in serious injury or death Indicates a potentially hazardous situation which if not avoided could result in serious injury or death Indicates a potentially hazardous situation which if not avoided may resu...

Page 4: ...ted 6 2 Powering On the SUN2000 Issue 06 2018 07 12 Changed Power Grid Types in 2 1 Product Overview to Power Grid Earthing Systems Updated 8 2 Troubleshooting Issue 05 2018 05 06 Updated 5 4 Connecting AC Output Power Cables Added the description about the metal stamping forming contact in 5 5 Connecting DC Input Power Cables Updated 8 1 Routine Maintenance Added B Contact Information Issue 04 20...

Page 5: ...echnologies Co Ltd iv Issue 02 2017 06 09 Added the description of supplying the mounting bracket separately to 4 5 Installing the Mounting Bracket Added the description of preparing MC4 DC terminals to 5 5 Connecting DC Input Power Cables Issue 01 2017 04 01 This issue is the first official release ...

Page 6: ...unting Bracket 28 4 5 1 Wall mounted Installation 29 4 5 2 Common Support mounted Installation 31 4 5 3 Tilted Support mounted Installation 33 4 6 Installing the SUN2000 34 4 7 Optional Installing the DC Protection Shroud 37 5 Connecting Cables 40 5 1 Preparing OT Terminals 40 5 2 Connecting the Ground Cable 41 5 2 1 Grounding the SUN2000 over a PE Point 42 5 2 2 PV Side Grounding 43 5 3 Opening t...

Page 7: ...the SUN2000 87 6 3 Powering Off the SUN2000 93 7 Man Machine Interactions 95 7 1 Operations with a USB Flash Drive 95 7 1 1 Exporting Configurations 95 7 1 2 Importing Configurations 97 7 1 3 Exporting Data 98 7 1 4 Upgrading 98 7 2 Operations with a SmartLogger 100 7 3 Operations with the NMS 100 7 4 Operations with the SUN2000 APP 100 8 Maintenance 101 8 1 Routine Maintenance 101 8 2 Troubleshoo...

Page 8: ...recautions in this document for installation cable connecting and maintenance Operation in extreme environments which are not covered in this document Unauthorized modifications to the product or software code Installation or use in environments which are not specified in related international standards Important Safety Instructions Save These Instructions This manual contains important instructio...

Page 9: ... installation ensure that the SUN2000 bottom is at most 730 mm 28 74 in from the ground If you have any questions about the distance consult the local technical support engineers Ensure that the SUN2000 is installed in a well ventilated environment Ensure that the SUN2000 heat sinks are free from blockage Open the maintenance compartment door of the chassis before connecting cables Do not perform ...

Page 10: ...re maintenance power off the SUN2000 and strictly comply with the safety precautions in this document and associated documents to operate the SUN2000 Maintain the SUN2000 with sufficient knowledge of this document and proper tools and testing equipment Before performing maintenance tasks power off the SUN2000 and wait at least 5 minutes Place temporary warning signs or erect fences to prevent unau...

Page 11: ...strings into AC power and feeds the power into the power grid Model Figure 2 1 describes the model number of the SUN2000 33KTL US Figure 2 1 Model number description Table 2 1 describes the rated output power and voltage of all models of SUN2000s Table 2 1 SUN2000 models and corresponding rated output power and voltage Model Rated Output Power Rated Output Voltage SUN2000 33KTL US 33 3 kW 480 V SU...

Page 12: ...s AC power distribution units and isolation transformers Figure 2 2 Network application A PV string B SUN2000 C ACDU D Isolation transformer E Power grid Power Grid Earthing Systems The following figure shows the power grid earthing systems supported by the SUN2000 Figure 2 3 Power Grid Earthing System The SUN2000 can be installed in common transformer secondary winding configuration such as neutr...

Page 13: ...rview Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 6 2 2 Appearance SUN2000 Dimensions Figure 2 4 shows the SUN2000 dimensions Figure 2 4 SUN2000 dimensions including the mounting plate Front View Figure 2 5 shows the SUN2000 front view ...

Page 14: ... string is properly connected and the DC input voltage of the corresponding MPPT circuit is higher than or equal to 200 V Green off The SUN2000 disconnects from all PV strings or the DC input voltage of each MPPT circuit is less than 200 V Grid tied indicator Green on The SUN2000 connects to the power grid Green off The SUN2000 does not connect to the power grid Communications indicator Blinking g...

Page 15: ... 0 125s and then off for 0 125s Local maintenance fails Steady green Local maintenance succeeds Local maintenance refers to operations performed after a USB flash drive a WLAN module a Bluetooth module or a USB data cable is inserted into the USB port of the solar inverter For example local maintenance includes data import and export using a USB flash drive and connecting to the SUN2000 app over a...

Page 16: ...00 bottom view Figure 2 7 shows the SUN2000 bottom view Figure 2 7 SUN2000 bottom view No Component Description Silk Screen 1 3 4 inch waterproof cable connector Inner diameter 14 18 mm 0 55 0 71 in COM1 COM2 COM3 2 2 inch waterproof cable connector Inner diameter 37 44 mm 1 46 1 73 in AC OUTPUT 3 USB port N A USB 4 DC switch 1 N A DC SWITCH 1 5 DC switch 2 N A DC SWITCH 2 ...

Page 17: ...arning Signs Warning signs are available on the SUN2000 side as described in Table 2 3 Table 2 3 Warning signs Symbol Name Meaning Electric shock Lethal voltages 1000 V DC Keep out No user serviceable parts inside Only trained service personnel are allowed access Both AC and DC voltage sources are terminated inside this equipment Each circuit must be disconnected before servicing When the photovol...

Page 18: ...e safe voltage Transformerless inverter The SUN2000 output does not pass through an isolation transformer Symbols Table 2 4 describes the labels on the SUN2000 chassis and their meanings Table 2 4 Label description Symbol Name Meaning PE point Indicates the position for connecting the PE cable Operation warning Do not remove the DC input connector when the SUN2000 is running SUN2000 serial number ...

Page 19: ...country of manufacture The nameplate figure is for reference only The actual nameplate prevails Table 2 5 describes the compliance symbols Table 2 5 Compliance symbols Symbol Name Meaning American FCC Part 15B certification The SUN2000 complies with FCC Part 15B certification standards American FCC Part 15G certification The SUN2000 complies with FCC Part 15G certification standards Canadian IC ce...

Page 20: ...riod WEEE label Do not dispose of the SUN2000 as household garbage 2 4 Working Principle Conceptual Diagram The SUN2000 receives inputs from eight PV strings Then the inputs are grouped into four MPPT routes inside the SUN2000 to track the maximum power point of the PV strings The DC power is then converted into three phase AC power through an inverter circuit Surge protection is supported on both...

Page 21: ...the requirements for starting the SUN2000 In standby mode The SUN2000 continuously performs self check and enters the operating mode once the operating requirements are met If the SUN2000 enters the shutdown mode after detecting a shutdown command or a fault after startup Operating In operating mode The SUN2000 converts DC power from PV strings into AC power and feeds the power to the power grid T...

Page 22: ...wei Technologies Co Ltd 15 Working Mode Description Shutdown In standby or operating mode the SUN2000 enters the shutdown mode after detecting a fault or shutdown command In shutdown mode the SUN2000 enters the standby mode after detecting a startup command or that a fault is rectified ...

Page 23: ...dhesive tape Keep the storage temperature at 40 C to 70 C 40 F to 158 F and the humidity at 5 95 RH The SUN2000 should be stored in a clean and dry place and be protected from dust and water vapor corrosion A maximum of five SUN2000s can be stacked Periodic inspections are required during the storage If any rodent bites are found replace the packing materials immediately If the SUN2000 has been lo...

Page 24: ... found or the inverter model is not what you requested do not unpack the package and contact your supplier as soon as possible Figure 4 1 Position of the inverter model label 1 Position of the model label You are advised to remove the packing materials within 24 hours before installing the inverter Package Contents After unpacking the inverter check that the contents are intact and complete If any...

Page 25: ...m 0 54 in and Φ16 mm 0 63 in Φ14 mm 0 54 in drill bit Drills holes in supports Φ16 mm 0 63 in drill bit Drills holes in walls Socket wrench set Works with a torque wrench Secures bolts and AC output terminals Torque wrench N A Secures bolts and AC output terminals Diagonal pliers N A Cut cable ties Wire stripper N A Peels cable jackets Torque screwdriver Flat head M3 Phillips head M4 Connects cabl...

Page 26: ... crimping tool N A Prepares RJ45 connectors for communications cables Amphenol Helios H4 crimping tool Model UTXTC0005 or H4TC0003 Manufacturer Amphenol Crimps metal contacts when preparing DC input power cables NOTE UTXTC0005 Amphenol is used to crimp metal cold forming contacts H4TC0003 Amphenol is used to crimp metal stamping forming contacts Amphenol Helios H4 open end spanner H4TW0001 Manufac...

Page 27: ...ng tool PV CZM 19100 Crimps MC4 metal contacts when preparing DC input power cables MC4 open end spanner PV MS open end spanner Removes MC4 DC connectors from the SUN2000 Vacuum cleaner N A Cleans up dust after drilling holes Multimeter DC voltage measurement range 1000 V DC Measures voltages Marker N A Marks signs Measuring tape N A Measures distances ...

Page 28: ...tion Level N A Levels hole positions Protective gloves N A Protect your hands during installation Insulation gloves Operating voltage 2000 V Protect you from electric shocks Safety goggles N A Protect your eyes during hole drilling Anti dust respirator N A Protects you from dust during hole drilling Hydraulic pliers N A Crimp OT terminals ...

Page 29: ...quirements The SUN2000 is protected to Type 4X and can be installed indoors or outdoors Do not install the SUN2000 in a place where personnel are easy to come into contact with its chassis and heat sinks because these parts are extremely hot during operation Do not install the SUN2000 in areas with flammable or explosive materials Installation Environment Requirements The SUN2000 must be installed...

Page 30: ... residents Installation Angle Requirements The SUN2000 can be installed on a wall normal support and tilted support Tilt requirements for installing a SUN2000 on a wall and normal support Install the SUN2000 vertically or at a maximum back tilt of 15 degrees to facilitate heat dissipation Do not install the SUN2000 at a front tilt excessive back tilt side tilt horizontally or upside down Figure 4 ...

Page 31: ...ounted installation The SUN2000 may operate with power derating if installed with a tilt Installation Space Requirements The SUN2000 dimensions W x H x D including the mounting plate are 930 mm x 550 mm x 283 mm 36 61 in x 21 65 in x 11 14 in Reserve enough clearance around the SUN2000 to ensure sufficient space for installation and heat dissipation ...

Page 32: ...of the SUN2000 and maintaining the SUN2000 in future it is recommended that the bottom clearance be between 600 mm 23 62 in and 730 mm 28 74 in If you have any questions about the distance consult the local technical support engineers When installing multiple SUN2000s install them in horizontal mode if sufficient space is available and install them in triangle mode if no sufficient space is availa...

Page 33: ...TL 36KTL 40KTL US User Manual 4 System Installation Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 26 Figure 4 6 Horizontal installation mode recommended Figure 4 7 Triangle installation mode recommended ...

Page 34: ...sonal injury keep balance when moving the SUN2000 because the SUN2000 is heavy Do not place the SUN2000 with its wiring terminals at the bottom contacting the floor or any other object because the terminals are not designed to support the weight of the SUN2000 When placing the SUN2000 on the floor put foam or paper under the SUN2000 to protect its cover Procedure Step 1 Arrange two persons to hold...

Page 35: ... The mounting bracket has four groups of tapped holes each group containing four tapped holes Mark any hole in each group based on site requirements and mark four holes in total Two round holes are preferred Figure 4 10 Mounting bracket dimensions Before installing the mounting bracket check whether there is a security torx wrench on the mounting bracket If yes remove the security torx wrench from...

Page 36: ...re Step 1 Determine the positions for drilling holes using the mounting bracket Level the hole positions using a level and mark the hole positions using a marker Figure 4 12 Determining hole positions Step 2 Drill holes using a hammer drill and install the supplied expansion bolts Avoid drilling holes in the water pipes and power cables buried in the wall An expansion bolt contains four parts as s...

Page 37: ... drill holes again Level the head of the expansion sleeve with the concrete wall after removing the bolt spring washer and flat washer Otherwise the mounting bracket will not be securely installed on the concrete wall 1 Drill a hole at a marked hole position in the wall using a hammer drill 2 Slightly tighten an expansion bolt vertically insert an expansion bolt into a hole and knock the expansion...

Page 38: ... 4 5 2 Common Support mounted Installation Procedure Step 1 Determine the positions for drilling holes using the mounting bracket Level the hole positions using a level and mark the hole positions using a marker Figure 4 16 Determining hole positions Step 2 Drill holes using a hammer drill You are advised to apply anti rust paint on the hole positions for protection ...

Page 39: ... mounting bracket holes with the drilled holes insert supplied bolt assemblies flat washers spring washers and bolts into the holes through the mounting bracket and secure them using stainless steel nuts and flat washers If the screw length does not meet the installation requirements prepare M12 bolt assemblies by yourself Figure 4 18 Securing a mounting bracket End ...

Page 40: ...lation Procedure Step 1 Determine the positions for drilling holes using the mounting bracket Level the hole positions using a level and mark the hole positions using a marker Figure 4 19 Determining hole positions Step 2 Drill holes using a hammer drill You are advised to apply anti rust paint on the hole positions for protection Figure 4 20 Drilling holes ...

Page 41: ... by yourself Figure 4 21 Securing a mounting bracket End 4 6 Installing the SUN2000 Procedure Step 1 If the installation position is low and you can mount the SUN2000 onto the mounting bracket go to Step 3 and then Step 5 Step 2 If the installation position is high and you cannot mount the SUN2000 onto the mounting bracket perform Step 3 to Step 6 Step 3 Ensure that two people lift the SUN2000 and...

Page 42: ...Copyright Huawei Technologies Co Ltd 35 Figure 4 22 Lifting a SUN2000 Step 4 Run a rope that is strong enough to bear the SUN2000 through the lifting eyes and hoist the SUN2000 When hoisting the SUN2000 keep balance to protect the SUN2000 from colliding with the wall or other objects ...

Page 43: ...User Manual 4 System Installation Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 36 Figure 4 23 Hoisting a SUN2000 Step 5 Install the SUN2000 on the mounting bracket and level the SUN2000 chassis with the mounting bracket ...

Page 44: ...nting the SUN2000 onto the mounting bracket Step 6 Tighten the two security torx screws using a security torx wrench to a torque of 5 N m Figure 4 25 Tightening security torx screws End 4 7 Optional Installing the DC Protection Shroud Context To avoid electric shocks you are advised to install a DC protection shroud in a rooftop PV plant ...

Page 45: ...m Installation Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 38 Procedure Step 1 Install the protection shroud bracket Figure 4 26 Installing a bracket Step 2 Install the protection shroud rear panel Figure 4 27 Installing a rear panel End ...

Page 46: ...d the DC input power cable through the tube conduit and then fittings 3 Connect the ground cable to the ground point on the PV side see 5 2 2 PV Side Grounding 4 Connect the DC input power cable by following the instructions in 5 5 Connecting DC Input Power Cables 5 Connect the conduit and fitting of the pipe 6 Check that the cables are connected correctly and securely Then take appropriate measur...

Page 47: ...er may result in electric shocks To prevent poor cable connection due to overstress it is recommended that the cables be bent and reserved and then connected to the appropriate ports The cable colors shown in the electrical connection drawings provided in this chapter are for reference only Select cables in accordance with local cable specifications green and yellow wires are used for grounding on...

Page 48: ...e conductor crimp strip of the OT terminal is crimped must wrap the core wires completely The core wires must contact the OT terminal closely Wrap the wire crimping area with heat shrink tubing or PVC insulation tape The following figure uses heat shrink tubing as an example When using the heat gun protect devices from being scorched Figure 5 1 Preparing an OT terminal 5 2 Connecting the Ground Ca...

Page 49: ...uisites The ground point on the enclosure is preferred to connect to the PE cable for the SUN2000 The ground point in the maintenance compartment is mainly used for connecting to the ground cable included in the multi core AC power cable If you connect a ground cable to the PE point on the shell ensure that the ground cable and OT terminal are available Recommended ground cable an outdoor copper c...

Page 50: ...orrosion resistance of the ground terminal apply silica gel or paint on the ground terminal after connecting the ground cable 5 2 2 PV Side Grounding Prerequisites A ground cable and an OT terminal are available Recommended ground cable an outdoor copper core cable with a cross sectional area of 6 AWG or more OT terminal M6 Procedure Step 1 Prepare the OT terminal Step 2 Secure the ground cable us...

Page 51: ...disconnect the AC and DC power supplies For processes of disconnecting the power supplies see 6 3 Powering Off the SUN2000 After powering off the SUN2000 wait at least 5 minutes before performing operations on it If you need to open the maintenance compartment door in rainy or snowy days take protective measures to prevent rain and snow entering the maintenance compartment If it is impossible to t...

Page 52: ... Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 45 Figure 5 4 Removing screws Step 2 Open the maintenance compartment door and adjust the support bar Figure 5 5 Adjusting a support bar Step 3 Remove the AC terminal cover and set it aside ...

Page 53: ...on device according to local power distribution regulations Do not connect loads between the SUN2000 and the AC switch Connect AC output power cables according to the requirements specified by local power grid operators The AC output power cable can be connected in a common way or through a pipe 5 4 1 Connection Through a Pipe Prerequisites The AC output power cable OT terminal and pipe are availa...

Page 54: ...cenario with a neutral wire you are advised to use five single core outdoor cables L1 L2 L3 N and PE Table 5 1 describes the cable specifications Table 5 1 Cable specifications Cable Specifications Copper Core Cable Copper Clad Aluminum Cable or Aluminum Alloy Cable Conductor cross sectional area Value range 6 2 0 AWG 4 2 0 AWG Recomm ended value 4 AWG 2 AWG Cable outer diameter 6 3 12 1 mm 0 25 0...

Page 55: ...n aluminum wiring terminal with a copper to aluminum adapter washer must comply with UL486 A and UL486 B Do not mix up the aluminum and copper sides of the copper to aluminum adapter washer Ensure that the aluminum side of the washer contacts the aluminum wiring terminal and the copper side contacts the AC terminal block Figure 5 7 Requirements for OT terminals Context The pipe specifications shou...

Page 56: ...ng are the reference torque values for the waterproof connector and pipe Observe the requirements of the specific manufacturer if any AC OUTPUT and COM ports 7 5 N m plastic or 10 N m metal RESERVE port 3 75 N m plastic or 6 25 N m metal Figure 5 9 Diameters of the bottom cable holes Procedure Step 1 Install the pipe fittings 1 Remove the AC filter and keep the screws aside 2 Remove the locking ca...

Page 57: ...s Co Ltd 50 4 Place the AC filter Figure 5 10 Installing pipe fittings Step 2 Route the AC output power cable through the conduit and fittings of the pipe and then the AC filter Step 3 Prepare the OT terminal Pay attention to the OT terminal and ensure that it can successfully connect to the AC terminal block ...

Page 58: ...Connecting Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 51 Figure 5 11 OT terminal direction using one cable as an example Step 4 Connect the AC output power cable and secure it using a socket wrench that has an extension rod ...

Page 59: ... operate or experience any fault that will cause the damage of the terminal block For example the SUN2000 may generate heat during operating due to unreliable connection If the SUN2000 is insecurely installed and the AC output power cable bears the pulling force ensure that the last cable bearing the force is the PE cable Figure 5 12 Connecting theAC output power cable excluding the ground cable a...

Page 60: ...e 07 2019 06 20 Copyright Huawei Technologies Co Ltd 53 Figure 5 13 Connecting theAC output power cable including the ground cable but excluding the neutral wire Figure 5 14 Connecting theAC output power cable excluding the ground cable but including the neutral wire ...

Page 61: ...ings are secured reliably and seal the cable holes Step 7 Secure the AC filter using screws Step 8 Clear foreign matter from the maintenance compartment End 5 4 2 Common Connection Prerequisites The AC output power cable and OT terminal are available Use a cable that can withstand 90 C 194 F or 105 C 221 F To facilitate the installation you are advised to use cords If you connect a ground cable to...

Page 62: ...scribes the cable specifications Table 5 2 Cable specifications Cable Specifications Copper Core Cable Copper Clad Aluminum Cable or Aluminum Alloy Cable Conductor cross sectional area Range 6 2 0 AWG 4 2 0 AWG Recomm ended value 4 AWG 2 AWG Cable outer diameter range supported by the AC OUTPUT waterproof connector 37 44 mm 1 46 1 73 in OT terminal M8 L1 L2 L3 and N and M6 PE Requirements for OT t...

Page 63: ... terminal with a copper to aluminum adapter washer must comply with UL486 A and UL486 B Do not mix up the aluminum and copper sides of the copper to aluminum adapter washer Ensure that the aluminum side of the washer contacts the aluminum wiring terminal and the copper side contacts the AC terminal block Figure 5 16 Requirements for OT terminals Procedure Step 1 Remove an appropriate length of the...

Page 64: ...nologies Co Ltd 57 Figure 5 17 Three core cable excluding the ground cable and neutral wire A Core wire B Insulation layer C Jacket Figure 5 18 Four core cable including the ground cable but excluding the neutral wire Figure 5 19 Four core cable excluding the ground cable but including the neutral wire ...

Page 65: ...logies Co Ltd 58 Figure 5 20 Five core cable including the ground cable and neutral wire Step 2 Prepare the OT terminal Step 3 Route the cable through the waterproof connector Figure 5 21 Routing cables Step 4 Connect the AC output power cable and secure it using a socket wrench that has an extension rod ...

Page 66: ... operate or experience any fault that will cause the damage of the terminal block For example the SUN2000 may generate heat during operating due to unreliable connection If the SUN2000 is insecurely installed and the AC output power cable bears the pulling force ensure that the last cable bearing the force is the PE cable Figure 5 22 Connecting theAC output power cable excluding the ground cable a...

Page 67: ...e 07 2019 06 20 Copyright Huawei Technologies Co Ltd 60 Figure 5 23 Connecting theAC output power cable including the ground cable but excluding the neutral wire Figure 5 24 Connecting theAC output power cable excluding the ground cable but including the neutral wire ...

Page 68: ...he cable colors in figures are for reference only Select appropriate cables according to the local standards Step 5 Tighten the waterproof connector to a torque of 7 5 N m End Follow up Procedure Check that the cables are connected correctly and securely Then seal the waterproof connectors and cable holes and clear foreign matter from the maintenance compartment 5 5 Connecting DC Input Power Cable...

Page 69: ...g current reduces to below 0 5 A Then turn off the two DC switches remove the positive and negative connectors and correct the polarity of the DC input power cable Ensure that the PV module output is well insulated to ground If the SUN2000 directly connects to the power grid with the neutral wire connected to the PE cable for example a low voltage power grid or a power grid with the neutral wire g...

Page 70: ...onnects to sets 1 2 3 5 6 and 7 7 Connects to sets 1 2 3 4 5 6 and 7 8 Connects to sets 1 2 3 4 5 6 7 and 8 DC input power cable specifications Table 5 4 lists the recommended DC input power cable specifications Table 5 4 Recommended DC input power cable specifications Cable Type Conductor Cross Sectional Area Cable Outer Diameter Range Recommended Value Common PV cables in the industry model PV1 ...

Page 71: ...itive and negative power cables into the appropriate positive and negative connectors Then pull back the DC input power cables to ensure that they are connected securely The Amphenol Helios H4 metal contacts supplied with the DC connectors are either cold forming contacts or stamping forming contacts Choose the crimping tools that fit the metal contact types Do not mix up the tools Crimp the Amphe...

Page 72: ... 36KTL 40KTL US User Manual 5 Connecting Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 65 Figure 5 28 Preparing positive and negative connectors usingAmphenol Helios H4 metal cold forming contacts ...

Page 73: ...6KTL 40KTL US User Manual 5 Connecting Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 66 Figure 5 29 Preparing positive and negative connectors usingAmphenol Helios H4 metal stamping forming contacts ...

Page 74: ...ep 2 Ensure that the DC input voltage of each PV string does not exceed 1000 V DC using a multimeter and check that the polarities of the DC input power cables are correct If the voltage is a negative value the PV string is reversely connected Correct the polarity If the voltage is greater than 1000 V DC too many PV modules are configured Remove some PV modules ...

Page 75: ...ing the DC input voltage Amphenol Helios H4 Figure 5 32 Measuring the DC input voltage MC4 Before performing Step 3 ensure that the two DC switches are OFF Step 3 Remove the dustproof cap and insert the positive and negative connectors into the corresponding positive and negative DC input terminals of the SUN2000 until they snap into place ...

Page 76: ...ht Huawei Technologies Co Ltd 69 After the positive and negative connectors snap into place pull the DC input power cables back to ensure that they are connected securely Figure 5 33 Connecting the DC input power cable Amphenol Helios H4 Figure 5 34 Connecting the DC input power cable MC4 ...

Page 77: ...the positive and negative connectors and correct the polarity of the DC input power cable End Follow up Procedure Before removing the positive and negative connectors ensure that the two DC switches are OFF To remove the positive and negative connectors from the SUN2000 insert an open end wrench into the notch and press the wrench with an appropriate force Figure 5 35 Removing a DC input connector...

Page 78: ...ation mode for a single SUN2000 Figure 5 38 shows the communication mode for multiple SUN2000s If multiple SUN2000s are used connect all the SUN2000s in daisy chain mode over an RS485 communications cable Figure 5 38 Communication mode for multiple SUN2000s The RS485 communication distance between the SUN2000 at the end of the daisy chain and the SmartLogger cannot exceed 1000 meters If multiple S...

Page 79: ... communication is set to Enable by default You can set a single SUN2000 over the SUN2000 app or set multiple SUN2000s in batches over the SmartLogger 5 6 2 Selecting a Mode for Connecting RS485 Communications Cables Description An RS485 communications cable can be connected in two ways Terminal block connection Recommended outdoor communications cable with a conductor cross sectional area of 18 AW...

Page 80: ...ect communication from being affected Terminal Block Pin Definitions Figure 5 39 shows an RS485 terminal block Figure 5 39 Terminal block Table 5 5 describes pin definitions of the RS485 terminal block Table 5 5 Pin definitions of the RS485 terminal block No Port Definition Description 1 RS485A IN RS485A RS485 differential signal 2 RS485A OUT RS485A RS485 differential signal 3 RS485B IN RS485B RS4...

Page 81: ...e 5 41 RJ45 connector Table 5 6 lists the RJ45 connector pin definitions Table 5 6 RJ45 connector pin definitions Pin Color Function 1 White and orange RS485A RS485 differential signal 2 Orange RS485B RS485 differential signal 3 White and green N A 4 Blue RS485A RS485 differential signal 5 White and blue RS485B RS485 differential signal 6 Green N A 7 White and brown N A 8 Brown N A Figure 5 42 sho...

Page 82: ...nd brown 8 Brown 5 6 3 Connecting RS485 Communications Cables Through a Pipe Connecting Cables to the Terminal Block Step 1 Install the pipe fittings 1 Remove the locking cap and plug from the waterproof connector and then remove the waterproof connector 2 Secure the pipe fittings to the chassis using the nut delivered with the pipe Figure 5 43 Installing pipe fittings Step 2 Route the communicati...

Page 83: ... communications cables to the terminal base Figure 5 44 Connecting cables to a terminal base 1 RS485A IN 2 RS485A OUT 3 RS485B IN 4 RS485B OUT Step 4 Install the terminal base on the terminal block and connect the shield layers to the ground point When connecting the shielded cables choose whether to crimp the OT terminal based on site requirements Figure 5 45 Connecting communications cables ...

Page 84: ...ting them Figure 5 46 Binding communications cables Step 6 Connect the conduit and fittings of the pipe End Connecting a Cable to the RJ45 Network Port Step 1 Install the pipe fittings 1 Remove the locking cap and plug from the waterproof connector and then remove the waterproof connector 2 Secure the pipe fittings to the chassis using the nut delivered with the pipe ...

Page 85: ...ei Technologies Co Ltd 78 Figure 5 47 Installing pipe fittings Step 2 Route the communications cable through the conduit and then fittings of the pipe Step 3 Insert the RJ45 connectors into the RJ45 network ports in the SUN2000 maintenance compartment Figure 5 48 Connecting communications cables ...

Page 86: ...ttings of the pipe End Follow up Procedure Check that the cables are connected correctly and securely Then take appropriate measures to ensure that the pipe conduit and fittings are secured reliably and seal the cable holes Clear foreign matter from the maintenance compartment 5 6 4 Connecting the RS485 Communications Cable in a Common Way Connecting Cables to the Terminal Block Step 1 Route the c...

Page 87: ... from the terminal block Connect the communications cables to the terminal base Figure 5 51 Connecting cables to a terminal base 1 RS485A IN 2 RS485A OUT 3 RS485B IN 4 RS485B OUT Step 3 Install the terminal base on the terminal block and connect the shield layers to the ground point When connecting the shielded cables choose whether to crimp the OT terminal based on site requirements ...

Page 88: ...er Manual 5 Connecting Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 81 Figure 5 52 Connecting communications cables Step 4 Bind communications cables after connecting them Figure 5 53 Binding communications cables ...

Page 89: ...td 82 Step 5 Tighten the waterproof connectors to a torque of 7 5 N m End Connecting Cables to the RJ45 Network Port Step 1 Route the communications cables through the waterproof connector Figure 5 54 Routing cables Step 2 Insert the RJ45 connectors into the RJ45 network ports in the SUN2000 maintenance compartment ...

Page 90: ...er Manual 5 Connecting Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 83 Figure 5 55 Connecting communications cables Step 3 Bind communications cables after connecting them Figure 5 56 Binding communications cables ...

Page 91: ...a torque of 7 5 N m End Follow up Procedure Check that the cables are connected correctly and securely Then seal the waterproof connectors and cable holes and clear foreign matter from the maintenance compartment 5 7 Closing the Maintenance Compartment Door Procedure Step 1 Install the AC terminal cover Figure 5 57 Installing a cover Step 2 Adjust the support bar ...

Page 92: ...nce compartment door and tighten the two screws on the door Figure 5 59 Tightening screws on the maintenance compartment door If a screw on the maintenance compartment door is missing use the unused ground screw on the chassis shell as a standby screw If the floating nut used for securing the maintenance compartment door is missing use the standby floating nut shown in Figure 5 60 ...

Page 93: ...SUN2000 33KTL 36KTL 40KTL US User Manual 5 Connecting Cables Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 86 Figure 5 60 Removing a standby floating nut End ...

Page 94: ...s or short circuits 7 The communications cables are connected correctly and securely 8 Check that all pipes and the waterproof connectors in use at the bottom of the chassis are sealed 9 The AC terminal cover is reinstalled 10 Check that the maintenance compartment is clean and tidy without foreign matter 11 The maintenance compartment door is closed and the door screws are tightened 12 Idle DC in...

Page 95: ...ctors using a point test thermometer To ensure that the DC terminals are in good contact check the temperatures at the joints between DC terminals and connectors after the SUN2000 has been running for a period of time Ensure that the temperature rise does not exceed 40 C 104 F Step 4 Connect a mobile phone that runs the SUN2000 app to the inverter using a Bluetooth module a WLAN module or a USB da...

Page 96: ...06 20 Copyright Huawei Technologies Co Ltd 89 Figure 6 2 Data cable connection Android A Inverter B USB data cable C Mobile phone Use the USB data cable delivered with the mobile phone The port type of the USB data cable connected to the SUN2000 is USB 2 0 Figure 6 3 Login screen ...

Page 97: ...t security change the password periodically and keep the new password in mind Not changing the initial password may cause password disclosure A password left unchanged for a long period of time may be stolen or cracked If a password is lost devices cannot be accessed In these cases the user is liable for any loss caused to the PV plant After you select Use by default for this USB accessory the mes...

Page 98: ...In these cases the user is liable for any loss caused to the PV plant During the login if an incorrect password is entered for five consecutive times the interval between two consecutive invalid password entries is less than 2 minutes the account will be locked for 10 minutes The password consists of six digits Step 6 Enter the password and tap Log In Step 7 After the successful login the Quick Se...

Page 99: ...rameters are affected Set user parameters based on the current date and time Set Baud rate RS485 protocol and Com address based on site requirements Baud rate can be set to 4800 9600 or 19200 RS485 protocol can be set to MODBUS RTU and Com address can be set to any value in the range of 1 to 247 When multiple inverters communicate with the SmartLogger over RS485 the addresses for all the inverters...

Page 100: ...city and heat may still cause electric shocks and body burns Therefore put on protective gloves and begin servicing the SUN2000 five minutes after the power off Procedure Step 1 Run a shutdown command on the SUN2000 APP SmartLogger or NMS For details see the SUN2000 APP User Manual SmartLogger1000 User Manual SmartLogger2000 User Manual or iManager NetEco 1000S User Manual Step 2 Turn off the AC s...

Page 101: ...r Manual 6 System Commissioning Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 94 Turn off the DC switches To prevent turning on the switches by mistake you are advised to lock the DC switches Figure 6 8 Installing locks End ...

Page 102: ...ton are recommended Other brands may be incompatible 7 1 1 Exporting Configurations Procedure Step 1 Generate a boot script file by choosing Tool Kit Local maintenance script Inverter maint script Inverter Command Settings on the SUN2000 app For details see the SUN2000 APP User Manual Step 2 Import the boot script file to a PC Optional The boot script file can be opened as a txt file as shown in F...

Page 103: ... drive and executes all commands specified in the boot script file View the LED indicator to determine the operating status Verify that the ciphertext in the boot script file matches the login password of the SUN2000 APP If they do not match and you insert the USB flash drive for five consecutive times the user account will be locked for 10 minutes Table 7 1 LED indicator description LED Indicator...

Page 104: ...nnect the USB flash drive to the USB port The system automatically identifies the USB flash drive and executes all commands specified in the boot script file View the LED indicator to determine the operating status Verify that the ciphertext in the boot script file matches the login password of the SUN2000 APP If they do not match and you insert the USB flash drive for five consecutive times the u...

Page 105: ...of the SUN2000 APP If they do not match and you insert the USB flash drive for five consecutive times the user account will be locked for 10 minutes Table 7 3 LED indicator description LED Indicator Status Meaning Green off There is no operation with a USB flash drive Blinking green at long intervals on for 1s and then off for 1s There is an operation with a USB flash drive Blinking green at short...

Page 106: ...p For details see the SUN2000 APP User Manual Step 4 Import the boot script file to a computer Step 5 Replace the boot script file in the upgrade package with the one generated by the SUN2000 APP Step 6 Copy the extracted files to the root directory of the USB flash drive Ensure that all upgrade files are copied to the root directory of the USB flash drive Step 7 Connect the USB flash drive to the...

Page 107: ...ors turn off during the restart After the restart the green indicator is blinking at long intervals on for 1s and then off for 1s for 1 minute until it becomes steady on which indicates that the upgrade is successful The SUN2000 can also be upgraded through the Inverter Update in the SUN2000 APP For details see the SUN2000 APP User Manual End 7 2 Operations with a SmartLogger For operations with a...

Page 108: ...ce compartment If it is impossible to take protective measures do not open the maintenance compartment door in rainy or snowy days Table 8 1 Maintenance list Item Check Method Maintenance Interval System cleanliness Check the heat sink for foreign matter or the overall health of the SUN2000 Annual or every time an abnormality is detected System running status Check the SUN2000 for damage or deform...

Page 109: ...g open circuit voltage exceeds the maximum value of the inverter MPPT voltage Cause ID 2 The PV array is not properly configured Excessive PV modules are connected in series to PV strings 3 and 4 and therefore the PV string open circuit voltage exceeds the maximum value of the inverter MPPT voltage Cause ID 3 The PV array is not properly configured Excessive PV modules are connected in series to P...

Page 110: ...ther the PV string is shielded from sunlight 3 If the PV string is clean and not shielded from sunlight check whether any PV module is faulty 120 127 String 1 8 Reversed Cause ID 1 Major Cause ID 2 Warning Cause ID 1 The PV string is reversely connected Cause ID 2 Only a few PV modules are connected in series to the PV string and therefore the end voltage is lower than that of other PV strings Cau...

Page 111: ... at night of the SUN2000 to Disable 2 If there is a PID compensation device in the system check whether it is faulty If so rectify the fault 3 Check whether PID compensation direction Crystalline silicon PV compensation mode of the SUN2000 and PV module compensation voltage direction of the PID module are correctly set based on the PV module model If not reset them 4 If the alarm persists contact ...

Page 112: ...Cause ID 29 1 The power grid experiences an outage 2 The AC circuit is disconnected or AC switch is OFF Cause ID 31 32 33 The impedance of the output phase wire A cause Cause ID 4 1 If the alarm occurs accidentally the power grid may be abnormal temporarily The SUN2000 automatically recovers after detecting that the power grid becomes normal 2 If the alarm occurs frequently check whether the grid ...

Page 113: ...he actual grid frequency is higher than the standard requirement for the local power grid Cause ID 4 The actual grid frequency is lower than the standard requirement for the local power grid Cause ID 5 The actual change rate of the grid frequency does not meet the standard requirement for the local power grid Cause ID 2 4 1 If the alarm occurs accidentally the power grid may be abnormal temporaril...

Page 114: ...f the alarm occurs repeatedly or persists check whether the impedance between the PV string and the ground is excessively low 321 Cabinet Overtempe rature Major Cause ID 1 The SUN2000 is installed in a place with poor ventilation The ambient temperature exceeds the upper threshold The internal fan works abnormally 1 Check the ventilation and ambient temperature of the SUN2000 installation position...

Page 115: ... fault persists contact Huawei technical support 2 Disable the AFCI function if you are sure not to use it 412 DC Arc Fault Major Cause ID 1 2 3 4 The PV string cable is in poor contact or with open circuits Check whether the PV string cable is in poor contact or with open circuits If yes reconnect the cable 504 Software Version Unmatch Minor Cause ID 1 2 3 During inverter software upgrade the ver...

Page 116: ...L 36KTL 40KTL US User Manual 8 Maintenance Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 109 If you cannot rectify faults with the measures listed in the preceding table contact Huawei technical support ...

Page 117: ... to remove the SUN2000 1 Disconnect all cables from the SUN2000 including RS485 communications cables DC input power cables AC output power cables and ground cables 2 Remove the SUN2000 from the mounting bracket 3 Remove the mounting bracket 9 2 Packing the SUN2000 If the original packing materials are available put the SUN2000 inside them and then seal them by using adhesive tape If the original ...

Page 118: ...mum conversion efficiency 98 9 CEC efficiency 98 5 Input Item SUN2000 33KTL US SUN2000 36KTL US SUN2000 40KTL US Maximum input power 37 500 W 41 000 W 45 100 W Maximum input voltage 1000 V MPPT voltage range 200 1000 V Lowest operating startup voltage 200 V 250 V MPPT voltage range at full load 460 850 V 490 850 V 530 850 V Rated input voltage 720 V Maximum input current per MPPT 22 A Maximum shor...

Page 119: ...ctive power cosφ 1 36 600 W 40 000 W 44 000 W Rated output voltage 277 V 480 V 3W PE 3W Na PE Rated output current 40 1 A 43 4 A 48 2 A Maximum output current 44 1 A 48 2 A 53 A Adapted grid frequency 60 Hz Power factor 0 8 leading 0 8 lagging Maximum total harmonic distortion rated power 3 Note a Choose whether to connect the neutral wire based on the application scenario When the SUN2000 is used...

Page 120: ... monitoring unit RCMU Supported AFCI Supported UL 1699B Type I Communication Item SUN2000 33KTL US SUN2000 36KTL US SUN2000 40KTL US Display LED indicator Bluetooth module app USB data cable app and WLAN module app RS485 Supported MBUS PLC Supported Common Parameters Item SUN2000 33KTL US SUN2000 36KTL US SUN2000 40KTL US Dimensions W x H x D Including the mounting plate 930 mm x 550 mm x 283 mm 3...

Page 121: ...2019 06 20 Copyright Huawei Technologies Co Ltd 114 Item SUN2000 33KTL US SUN2000 36KTL US SUN2000 40KTL US Humidity 0 100 RH Input terminal Amphenol Helios H4 or MC4 Output terminal Waterproof cable connector OT terminal Ingress Protection Rating Type 4X Topology Transformerless ...

Page 122: ...oltage power grid 2 IEEE 1547a MV480 2016 US medium voltage power grid 3 PRC_024_ERCOT MV480 Texas medium voltage power grid 4 PRC_024_Eastern MV480 Eastern US medium voltage power grid 5 PRC_024_Western MV480 Western US medium voltage power grid 6 PRC_024_Quebec MV480 Quebec medium voltage power grid 7 ELECTRIC RULE NO 21 MV480 California medium voltage power grid 8 HECO MV480 Hawaii medium volta...

Page 123: ... following information to receive better service Customer Name Contact Info Project Name and Location Project Scale Project Grid connection Time Fault Occurrence Time Quantity of Faulty Inverters Inverter Model SN Inverter Firmware Version Warranty Info Problem Description SmartLogger Model SmartLogger Firmware Version SmartLogger Networking Scenarios Such as Optical Fiber RS485 MBUS PLC Networkin...

Page 124: ... C Acronyms and Abbreviations A ACDU AC distribution unit AFCI arc fault circuit interrupter C CCO central controller CEC California Energy Commission E EFUP environmentally friendly use period L LED light emitting diode M MBUS monitoring bus MPP maximum power point MPPT maximum power point tracking N NMS network management system ...

Page 125: ...ions Issue 07 2019 06 20 Copyright Huawei Technologies Co Ltd 118 P PID potential induced degradation PLC power line communication PV photovoltaic R RCMU residual current monitoring unit T THD total harmonic distortion W WEEE waste electrical and electronic equipment ...

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