Huawei SUN2000 Series User Manual

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SUN2000-(12KTL-25KTL)-M5 Series

User Manual

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Date

2022-06-15

HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei SUN2000 Series

Page 1 SUN2000-(12KTL-25KTL)-M5 Series User Manual Issue Date 2022-06-15 HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei Digital Power Technologies Co., Ltd. and the customer. 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"...
Page 3: About This Document
Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 4 Changes between document issues are cumulative. The latest document issue contains all updates made in previous issues. Issue 01 (2022-06-15) This issue is used for first office application (FOA). Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 5: Table Of Contents
4.6 (Optional) Installing a Junction Box..........................23 5 Electrical Connections......................25 5.1 Precautions....................................25 5.2 Preparing Cables................................... 26 5.3 Connecting the Ground Cable............................28 5.4 Installing DC Input Power Cables............................ 31 Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 6 B Device Commissioning......................81 C Resetting Password.......................83 D Locating Insulation Resistance Faults................84 E Rapid Shutdown........................88 F NS Protection..........................89 G Preconfigured Certificate Disclaimer................90 H Acronym and Abbreviation....................91 Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 7: Safety Information
The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document do not cover all the safety instructions. They are only supplements to the safety instructions. Huawei will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards.
Page 8: Personnel Requirements
Do not touch the energized equipment, as the enclosure is hot. 1.2 Personnel Requirements ● Personnel who plan to install or maintain Huawei equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.
Page 9: Electrical Safety
Obtain approval from the local electric utility company before using the equipment in grid-tied mode. ● Ensure that the cables you prepared meet local regulations. ● Use dedicated insulated tools when performing high-voltage operations. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 10: Installation Environment Requirements
Do not overload it. ● Ensure that the wider end of the ladder is at the bottom, or protective measures have been taken at the bottom to prevent the ladder from sliding. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 11 Moving Heavy Objects ● Be cautious to avoid injury when moving heavy objects. ● When moving the equipment by hand, wear protective gloves to prevent injuries. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 12: Commissioning
If the equipment is faulty, contact your dealer. ● The equipment can be powered on only after all faults are rectified. Failing to do so may escalate faults or damage the equipment. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 13: Overview
This document involves the following product models: ● SUN2000-12KTL-M5 ● SUN2000-15KTL-M5 ● SUN2000-17KTL-M5 ● SUN2000-20KTL-M5 ● SUN2000-25KTL-M5 ● SUN2000-15KTL-ZHM5 ● SUN2000-17KTL-ZHM5 ● SUN2000-20KTL-ZHM5 ● SUN2000-25KTL-ZHM5 Figure 2-1 Model description (SUN2000-15KTL-ZHM5 is used as an example) Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 14 M5: product series with an input voltage level of 1100 V DC Supported Power Grids Power grid types supported by the SUN2000 include TN-S, TN-C, TN-C-S, TT, and Figure 2-2 Supported power grids Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 15 Figure 2-3 Networking application (single inverter) (A) PV string (B) SUN2000 (C) AC power distribution unit (D) Load (E) Power meter (F) Power grid (G) Smart Dongle (H) Optimizer Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 16: Appearance
The DC switch locking screw is delivered with the device. Table 2-2 LED indicator description Category Status Meaning Running LED1 LED2 indication Steady green Steady green The SUN2000 is operating in grid- tied mode. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 17 SUN2000. There is no communication. Device LED1 LED2 LED3 replacement Steady red Steady red Steady red The SUN2000 hardware is faulty. indication The SUN2000 needs to be replaced. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 18: Label Description
Scan the QR code to connect Fi connection to the SUN2000 inverter Wi-Fi. 2.4 Working Principles 2.4.1 Working Modes The SUN2000 can work in Standby, Operating, or Shutdown mode. Figure 2-5 Working modes Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 19: Circuit Diagram
PV strings through two maximum power point tracking (MPPT) circuits. It also converts DC power into three-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 21: Sun2000 Storage
● If the SUN2000 has been stored for more than two years, it must be checked and tested by professionals before being put into use. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 23: Tools
Rubber mallet Utility knife Model: PV-MS-HZ Open-end Wrench; manufacturer: Staubli Crimping tool Cable cutter Multimeter Vacuum cleaner Model: PV- DC voltage CZM-22100/19100; measurement range ≥ 1100 V DC manufacturer: Staubli Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 24: Determining The Installation Position
Do not install the inverter in noise-sensitive areas. ● Do not install the inverter in areas with flammable or explosive materials. ● Do not install the inverter in a place within children's reach. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 25: Space Requirements
Do not install the inverter at forward tilted, excessive back tilted, side tilted, horizontal, or upside down positions. Figure 4-1 Installation angle Clearance Requirements ● Reserve enough clearance around the inverter to ensure sufficient space for installation and heat dissipation. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 26: Moving An Inverter
Step 1 Two persons are required to move the inverter with one person on both sides. Lift the inverter from the packing case and move it to the specified installation position. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 27: Installing An Inverter
● For support-mounting, prepare M6 stainless bolt assemblies (including flat washers, spring washers, and M6 bolts) with appropriate lengths as well as corresponding flat washers and nuts based on the support specifications. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 28 (2) Nut (3) Spring washer (4) Flat washer (5) Expansion sleeve Procedure Step 1 Install the mounting bracket. Step 2 Mount the inverter on the mounting bracket and install screws. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 29: Optional) Installing A Junction Box
4.6 (Optional) Installing a Junction Box NO TICE If you do not connect cables immediately after securing the inverter, install a junction box. Otherwise, the protection level of the inverter will be affected. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 31: Electrical Connections
The cable colors shown in the electrical connection diagrams provided in this chapter are for reference only. Select cables in accordance with local cable specifications (green-and- yellow cables are only used for grounding). Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 32: Preparing Cables
AC switch Recommended: three-phase AC Prepared by the circuit breaker, rated voltage ≥ customer 415 V AC, rated current: ● 12KTL–20KTL: 40 A ● 25KTL: 50 A or 63 A Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 33 15KTL–25KTL: ≥ 10 copper cable AC output Outdoor 11–26 mm 12KTL: 6–16 mm power cable copper cable 15KTL–25KTL: 10–16 DC input power Common 5.5–9 mm 4–6 mm cable outdoor PV cable Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 34: Connecting The Ground Cable
This function is used to check whether the inverter is properly grounded under limited conditions. To ensure the safe operation of the inverter, properly Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 35 ● Wrap the wire crimping area with heat-shrink tubing or insulation tape. The heat-shrink tubing is used as an example. ● Use a heat gun carefully to avoid heat damage to the equipment. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 36 (1) Cable (2) Core wire (3) Heat-shrink tubing (4) OT terminal (5) Crimping tool (6) Heat gun Step 2 Connect the PE cable. Figure 5-3 Connecting a PE cable ----End Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 37: Installing Dc Input Power Cables
PV string current drops to below 0.5 A. Then set DC SWITCH to OFF, remove the positive and negative connectors, and connect the DC input power cables correctly. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 38 Figure 5-4 DC input terminals Procedure WARNING Before inserting the positive and negative connectors into the positive and negative DC input terminals of the inverter, ensure that DC SWITCH is set to OFF. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 39 Using incompatible positive and negative metal terminals and DC connectors may result in serious consequences. The resulting device damage is not covered under any warranty. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 40: Installing Ac Output Power Cables And Signal Cables
It is recommended that a three-phase AC switch be installed on the AC side of the inverter. To ensure that the inverter can safely disconnect itself from the power Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 42 Step 1 Route the cables through the junction box and prepare cable terminals. NO TICE The cable stripping length must meet the requirements. Otherwise, the airtightness and waterproof performance of the device may be affected. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 43 Step 2 Install AC output power cables and signal cables. (The following uses the RS485 signal cables as an example. For details about other signal cables, see the signal definitions of communications ports.) Figure 5-9 Installing AC output power cables and signal cables Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 44: Optional) Installing The Smart Dongle And Anti-Theft Components
Smart Dongle Quick Guide . Step 1 Install the Smart Dongle. For details, see the Step 2 Install the anti-theft components. Figure 5-11 Installing the Smart Dongle anti-theft components ----End Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 45: Commissioning
Unused terminals and ports Unused terminals and ports are locked by watertight caps. Installation environment The installation space is proper, and the installation environment is clean and tidy, without foreign matter. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 46: Powering On The System
1s and grid. off for 1s) Blinking green slowly The DC is off and the AC (on for 1s and off for is on. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 47 The inverter needs to be replaced. Step 7 (Optional) Observe the Smart Dongle LED indicator to check the status of the Smart Dongle. ● WLAN-FE Smart Dongle Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 48 Check whether the Smart Dongle is faulty or the USB port of the inverter is faulty. Green Blinking slowly Normal Connecting to the router (on for 0.5s and off for 0.5s) Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 49 The inverter is for 0.2s and off communicating with the for 0.2s) management system through the Smart Dongle. Steady on Abnorma The Smart Dongle is faulty and needs to be replaced. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 50 Smart Dongle. – Connect the Smart Dongle to another inverter. Check whether the Smart Dongle is faulty or the USB port of the inverter is faulty. ----End Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 51: Man-Machine Interactions
Method 1: Access https://solar.huawei.com using the mobile phone browser and download the latest installation package. Figure 7-1 Download Mode ● Method 2: Search for FusionSolar on Huawei AppGallery and download the latest installation package. ● Method 3: Scan the following QR code and download the latest installation package.
Page 52: Optional) Registering An Installer Account
To create multiple installer accounts for a company, log in to the FusionSolar App and tap Add User to create an installer account. Figure 7-4 Creating multiple installer accounts for the same company Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 53: Creating A Pv Plant And A User
Log in to the FusionSolar app, choose Device Commissioning > Maintenance > Optimizer disconnection detection, tap the detection button to detect the optimizer disconnection, and rectify the fault based on the detection result. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 54: Parameters Settings
Limits or reduces the output power of the PV power system to ensure that the output power is within the power deviation limit. Procedure Step 1 On the home screen, choose Power adjustment > Grid-tied point control. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 55 Smart Dongle and the SUN2000 is disconnected, the Smart Dongle delivers the derating value of the SUN2000 active power by percentage. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 56 Smart Dongle and the SUN2000 is disconnected, the Smart Dongle delivers the derating value of the SUN2000 active power by percentage. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 57 Power control Specifies the dead zone for adjusting hysteresis the SUN2000 output power. If the power fluctuation is within the power control hysteresis, the power is not adjusted. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 58 Upper feed-in power threshold for inverter ● The default value is 0. This shutdown (kW) parameter specifies the power threshold of the grid-connection point for triggering inverter shutdown. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 59: Apparent Power Control On The Inverter Output Side
Note a: This parameter is supported only for the AS4777 grid code. ----End 7.2.1.2 Apparent Power Control on the Inverter Output Side On the home screen, tap Settings > Power adjustment to set inverter parameters. Figure 7-8 Apparent power control Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 60: Afci
To disable this function, log in to the FusionSolar App, enter the Device Commissioning screen, choose Settings > Feature parameters, and disable AFCI. NO TE The AFCI function works only with Huawei optimizers or ordinary PV modules, but does not support third-party optimizers or intelligent PV modules. Clearing Alarms The AFCI function involves the DC arc fault alarm.
Page 61 Switch to the owner account with PV plant management rights. On the home page, click the PV plant name to go to the PV plant page, and click OK as prompted to clear the alarm. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 62: Maintenance
8.2 Routine Maintenance To ensure that the SUN2000 can operate properly for a long term, you are advised to perform routine maintenance on it as described in this chapter. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 63: Troubleshooting
Major: The inverter is faulty. As a result, the output power decreases or the grid-tied power generation is stopped. ● Minor: Some components are faulty without affecting the grid-tied power generation. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 64 2. Check whether the open-circuit strings. voltage of the PV string is abnormal. Cause ID 1–4: PV 3. Check whether the PV string is strings 1–4 shaded. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 65 SmartLogger, or NMS with the consent of the local power operator. 3. If the alarm persists for a long time, check the AC circuit breaker and AC output power cable. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 66 4. If the AC output power cable is correctly connected, yet the alarm persists and affects the energy yield of the PV plant, contact the local power operator. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 67 2. If the alarm persists, check whether meet the the power grid frequency is within requirements for the acceptable range. If not, contact the local power the local power operator. grid code. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 68 2. If the alarm persists or lasts a long operating. time, check whether the impedance between the PV string and ground is too low. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 69 3. If both the ventilation and ambient upper threshold. temperature meet requirements yet the alarm persists, contact your ● The inverter is dealer or Huawei technical support. not operating properly. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 70 RS485 configurations of the inverter. 3. Check whether the power meter is powered on and whether the RS485 communications cable is connected. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 71 The optimizer modules in the string and check installation whether the string voltage exceeds position is the upper threshold of the inverter changed, or PV input voltage. strings are Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 72 PV array output and the ground. If a short circuit occurs or the insulation is insufficient, rectify the fault. 2. If the alarm persists, contact your dealer or Huawei technical support. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 73: Replacing A Fan
● Before replacing a fan, power off the inverter. ● When replacing a fan, use insulated tools and wear PPE. Procedure Step 1 Remove the fan cover, disconnect fan cables, and remove the faulty fan. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 74 SUN2000-(12KTL-25KTL)-M5 Series User Manual 8 Maintenance Figure 8-1 Removing a faulty fan Step 2 Install a new fan, connect and bind the cables, and install the fan cover. ----End Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 75: Handling The Inverter
9.3 Disposing of the SUN2000 If the SUN2000 service life expires, dispose of it according to the local disposal rules for electrical equipment waste. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 76: Technical Specifications
1100 V voltage Maximum input 20 A (one PV string)/30 A (one MPPT) current per MPPT Maximum short- 40 A circuit current per MPPT Minimum startup 200 V voltage Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 77 33.6 A/380 V 42.0 A/380 V current 23.9 A/400 V 27.1 A/400 V 31.9 A/400 V 39.9 A/400 V 23.1 A/415 V 26.1 A/415 V 30.8 A/415 V 38.5 A/415 V Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 78 Output Supported overcurrent protection Input reverse Supported connection protection DC surge TYPE II protection AC surge CLASS II protection Insulation Supported resistance detection Residual current Supported monitoring unit (RCMU) Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 79 Cooling mode Smart air cooling Maximum 4000 m (derated when the altitude is greater than 2000 m) operating altitude Storage –40°C to +70°C temperature IP rating IP66 Topology Transformerless Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 80: Sun2000-(12Ktl-25Ktl)-M5 Technical Specifications
25500 W 30000 W 37500 W d maximum input DC power Maximum 1100 V input voltage Maximum 20 A (one PV string)/30 A (one MPPT) input current per MPPT Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 81 13200 W 16500 W 18700 W 22000 W 27500 W active power (cosφ = 1) Rated output 220 V/380 V, 3W/N+PE voltage 230 V/400 V, 3W/N+PE 239.6 V/415 V, 3W/N+PE Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 82 THDI Protection Item SUN2000-12K SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-25K TL-M5 TL-M5 TL-M5 TL-M5 TL-M5 Overvoltage PV II/AC III category Input DC Supported switch Anti-islanding Supported protection Output Supported overcurrent protection Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 83 TL-M5 TL-M5 TL-M5 TL-M5 TL-M5 Display LED indicators; WLAN+app WLAN/FE Supported Dongle 4G Dongle Optional RS485 Supported communicatio Built-in WLAN Supported DC MBUS Supported AFCI Supported PID recovery Supported Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 84 Storage –40°C to +70°C temperature IP rating IP66 Topology Transformerless WLAN Item Technical Specifications Frequency 2400–2483.5 MHz Protocols 802.11b/g/n standards Bandwidth Maximum ≤ 20 dBm EIRP transmit power Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 85: A Grid Codes
Taiwan Power Support Support Support Support Support low-voltage power grid OMAN Oman low- Support Support Support Support Support voltage power grid Pakistan Pakistan power Support Support Support Support Support grid Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 86 Hong Kong Support Support Support Support Support low-voltage power grid SWITZERLAND- Switzerland Support Support Support Support Support NA/EEA:2020- power grid LV230 NA_CODE Default country Support Support Support Support Support code Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 87: B Device Commissioning
Device Commissioning Step 1 Access Device Commissioning screen. Figure B-1 Method 1: before login (not connected to the Internet) Figure B-2 Method 2: after login (connected to the Internet) Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 88 ● When you access the Device Commissioning screen of the SUN2000 for the first time, you need to manually set the login password because the SUN2000 does not have an initial login password. ----End Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 89: C Resetting Password
Step 6 Set router and management system parameters to implement remote management. ----End NO TICE You are advised to reset the password in the morning or at night when the solar irradiance is low. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 90: D Locating Insulation Resistance Faults
Low insulation resistance alarm on the FusionSolar app. Log in to the FusionSolar app, choose Alarm > Active alarm, select Low insulation resistance to enter the Alarm details screen. Figure D-1 Alarm details Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 91 Step 3 Connect one PV string to the inverter, and set DC SWITCH to ON. If the inverter status is,log in to the app, choose Maintenance > Inverter ON/OFF on the home screen, and send a startup command. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 92 PV module and optimizer, and repeat Step 5 to check the PV modules and optimizers adjacent to the possible fault location. Step 8 Determine the position of the ground insulation fault: Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 93 PV strings one by one. Then, go to Step Step 9 Set DC SWITCH to ON. If the inverter status is Shutdown: Command, choose Maintenance > Inverter ON/OFF, and send a startup command. ----End Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 94: E Rapid Shutdown
Figure E-1 Connecting cables to a rapid shutdown switch ● Method 4: If AFCI is enabled, the inverter automatically detects arc faults and implements AFCI lock protection which will trigger a rapid shutdown. Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 95: F Ns Protection
Settings > Feature parameters > Dry contact function, and set Dry contact function to NS protection. Figure F-1 Connecting cascaded inverters to the NS protection switch Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 96: G Preconfigured Certificate Disclaimer
Preconfigured Huawei-issued certificates are used only in the deployment phase, for establishing initial security channels between devices and the customer's network. Huawei does not promise or guarantee the security of preconfigured certificates. The customer shall bear consequences of all security risks and security incidents involved in using preconfigured Huawei-issued certificates as service certificates.
Page 97: H Acronym And Abbreviation
User Manual H Acronym and Abbreviation Acronym and Abbreviation AFCI arc-fault circuit interrupter light emitting diode maximum power point MPPT maximum power point tracking protective earthing potential induced degradation photovoltaic Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd.

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