Related Manuals for Huawei MERC Series
Summary of Contents for Huawei MERC Series
- Page 1 MERC Smart PV Optimizer User Manual Issue Date 2022-11-30 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"...
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Page 3: About This Document
Indicates a potential hazard 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 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. - Page 4 3.5 Replacing an Optimizer. Issue 02 (2022-09-20) ● Updated 2.3 Configuration Principles. ● Updated Troubleshooting. ● Updated 4 Technical Specifications. Issue 01 (2022-08-30) This issue is the first official release. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 5: Table Of Contents
3.2 Detecting Optimizer Disconnection..........................12 3.3 Rapid Shutdown..................................13 3.4 Troubleshooting..................................14 3.5 Replacing an Optimizer..............................15 3.6 Maintaining PV Modules..............................17 4 Technical Specifications....................... 19 A Acronyms and Abbreviations..................... 21 Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. -
Page 6: Safety Precautions
● Install the product in strict accordance with the quick guide. Declaration Huawei will not be liable for any consequences in any of the following circumstances: Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. - Page 7 Reserve appropriate clearances around the optimizer for installation and heat dissipation. Electrical Connections D ANGER Before connecting cables, ensure that the optimizer is not damaged. Otherwise, electric shocks or fire may occur. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
- Page 8 The optimizer can be powered on only after all faults are rectified. Otherwise, faults may escalate or equipment may be damaged. ● Observe ESD precautions and wear ESD gloves during maintenance. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 9: Product Introduction
PV string can contain more PV modules than conventional PV strings. Model This document involves the following product models: ● MERC-1300W-P ● MERC-1100W-P Figure 2-1 Model description (MERC-1300W-P optimizer is used as an example) Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. -
Page 10: Structure
(Long input power m (positive) cables) 2.2 Structure Optimizer Ports Figure 2-2 Ports (1) Output port (positive) (2) Output port (negative) (3) Input port (negative) (4) Input port (positive) Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. -
Page 11: Configuration Principles
● Partial configuration is not allowed. All PV modules must be connected to optimizers. Otherwise, serious consequences may occur, and the resulting device damage is not covered by the warranty. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. - Page 12 8 or later SUN2000-2 20 kW 6-25 – 0.8-1.0 1.0-2.0 – 9.9/30KTL- SUN2000-3 20 kW 6-25 – 0.8-0.9 0.9-1.6 1.6-2.0 6KTL-M3 SUN2000-4 20 kW 6-25 – – 0.8-1.0 1.0-2.0 0KTL-M3 Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 13: Application Scenarios
● The SUN2000-(600W-P, 450W-P2) cannot be used together with the MERC-(1300W, 1100W)-P. Full configuration: All PV modules are connected to optimizers. In this scenario, the MPPT function, module-level shutdown and monitoring, and long-string design are supported. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. - Page 14 MERC Smart PV Optimizer User Manual 2 Product Introduction Figure 2-4 Full configuration (vertically mounted) NO TE The figure shows only the output (OUT) cables. Figure 2-5 Full configuration (horizontally mounted) Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 15: System Maintenance
● If you have uploaded the physical layout template photo on the FusionSolar app, skip the steps of Manage Drawings > Upload. Log in to https://intl.fusionsolar.huawei.com to access the WebUI of the FusionSolar Smart PV Management System. On the Home page, click the plant name to access the plant page. - Page 16 Confirm > Layout Generation > Confirm to save the result. If some optimizers' QR codes cannot be identified, manually bind the optimizer SNs on the WebUI. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 17: Detecting Optimizer Disconnection
Log in to the FusionSolar app and tap the plant name on the Home screen to access the plant screen. Choose Layout, tap Disconnection detection to check optimizer disconnection, and rectify the fault based on the result. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. -
Page 18: Rapid Shutdown
3 System Maintenance Figure 3-3 Detect optimizer disconnection ● Log in to https://intl.fusionsolar.huawei.com to access the WebUI of the FusionSolar Smart PV Management System. On the Home page, click the plant name to access the plant page. Choose Layout, tap Disconnection detection to check optimizer disconnection, and rectify the fault based on the result. -
Page 19: Troubleshooting
Output Optimizer 1. Check whether PV modules are shaded backfeed output backfeed when PV strings are connected in occurred. parallel. 2. If the fault persists, contact your installer. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. -
Page 20: Replacing An Optimizer
If the fault persists after all suggested measures listed above are completed, contact your installer. 3.5 Replacing an Optimizer Prerequisites ● Use dedicated insulation tools, and wear insulation shoes and protective gloves before performing operations. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. - Page 21 N optimizers need to be replaced, perform the preceding procedure for N times. ● If ● After the optimizer is replaced, the new optimizer automatically inherits the energy yield, physical layout, and logical layout of the faulty optimizer. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 22: Maintaining Pv Modules
3 System Maintenance ----End Follow-up Procedure Pack the faulty component and return it to the local Huawei warehouse. 3.6 Maintaining PV Modules Log in to the FusionSolar app and tap the plant name on the Home screen to access the plant screen. Select Layout and quickly identify inefficient PV modules by color in the physical or logical layout. - Page 23 40%–60% 60%–80% 80%–100% Default color The rated power of the optimizer cannot be reported or obtained. As a result, the calculation fails. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 24: Technical Specifications
Technical Specifications MERC-1300W-P MERC-1100W-P Rated output power 1300 W 1100 W Output voltage 2-80 V Maximum output current 22 A Output bypass Safe output voltage Typical value: 1 V Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd. - Page 25 Note a: When the operating temperature of the optimizer ranges from 70°C to 85°C, the optimizer may shut down for overtemperature protection and report an overtemperature alarm. After the operating temperature decreases, the optimizer automatically recovers with no risk of damage. Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.
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Page 26: A Acronyms And Abbreviations
User Manual A Acronyms and Abbreviations Acronyms and Abbreviations direct current electrical fast transient electromagnetic interference electromagnetic susceptibility electrostatic discharge MPPT maximum power point tracking radiated emission radiated susceptibility Issue 03 (2022-11-30) Copyright © Huawei Digital Power Technologies Co., Ltd.