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Huawei MERC Smart PV Optimizer User Manual
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Huawei MERC Smart PV Optimizer User Manual

Huawei MERC Smart PV Optimizer User Manual

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MERC Smart PV Optimizer
User Manual
Issue
05
Date
2023-03-31
HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei MERC Smart PV Optimizer

  • Page 1 MERC Smart PV Optimizer User Manual Issue Date 2023-03-31 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 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 05 (2023-03-31) 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 5: Table Of Contents

    3.2 Detecting Optimizer Disconnection..........................21 3.3 Rapid Shutdown..................................22 3.4 Troubleshooting..................................23 3.5 Replacing an Optimizer..............................24 3.6 Maintaining PV Modules..............................26 4 Technical Specifications....................... 28 A Acronyms and Abbreviations..................... 30 Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 6: Safety Information

    ● The equipment is operated beyond the conditions specified in this document. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 7: Personal Safety

    D ANGER During operations, use dedicated insulated tools to prevent electric shocks or short circuits. The dielectric withstanding voltage level must comply with local laws, regulations, standards, and specifications. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 8 – Trained personnel: personnel who are trained in technology and safety, have required experience, are aware of possible hazards on themselves in Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 9: Electrical Safety

    WARNING For the equipment that needs to be grounded, install the ground cable first when installing the equipment and remove the ground cable last when removing the equipment. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 10 Disconnect the power supply. Check whether the equipment is live. Install a ground cable. Hang warning signs and set up fences. ● Do not open equipment panels. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 11 Secure buried cables using cable supports and cable clips. Ensure that the cables in the backfill area are in close contact with the ground to prevent cable deformation or damage during backfilling. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 12 (ASICs), observe ESD protection regulations and wear ESD clothing and ESD gloves or a well- grounded ESD wrist strap. Figure 1-2 Wearing an ESD wrist strap Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 13: Environment Requirements

    General Requirements ● Ensure that the equipment is stored in a clean, dry, and well ventilated area with proper temperature and humidity and is protected from dust and condensation. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 14 ● After installing the equipment, remove the packing materials such as cartons, foam, plastics, and cable ties from the equipment area. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 15: Mechanical Safety

    ● Use correct tools and operate them in the correct way. Moving Heavy Objects ● Be cautious to prevent injury when moving heavy objects. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 16 Do not pile up scaffolding, springboards, or other objects on the ground under the area involving working at heights. Do not allow people to stay or pass under the area involving working at heights. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 17 If a single ladder is used, the recommended angle for the ladder against the floor is 75 degrees, as shown in the following figure. A square can be used to measure the angle. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 18 To avoid short circuits or other risks, do not drill holes into buried pipes or cables. ● When drilling holes, protect the equipment from shavings. After drilling, clean up any shavings. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 19: 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 20: 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 21: 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 22: Application Scenarios

    KTL-M3 SUN2000-50 20 kW 8-20 – – 0.8-0.9 0.9-1.6 SUN2000M KTL- ZHM3/M3/ V200R023C NHM3 00SPC100 or later 2.4 Application Scenarios Full configuration: All PV modules are connected to optimizers. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 23 (keeping the positive and negative cables close to one another or twisting them together) as shown in the following figure for either a single string installation or a multi-string installation. Figure 2-4 Required routing Figure 2-5 Prohibited routing Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 24: System Maintenance

    Incorrect parameter settings may result in noncompliance with local grid connection requirements and affect the normal operations of the equipment. 3.1 Setting the Physical Layout of the Smart PV Optimizers Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 25 ● 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 26: 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 27: 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 28: Troubleshooting

    Output backfeed Optimizer 1. Check whether PV modules are shaded output when PV strings are connected in backfeed parallel. occurred. 2. If the fault persists, contact your installer. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 29: 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 insulated gloves before performing operations. Issue 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 30 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 31: 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 32 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 33: 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 34 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 35: 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 05 (2023-03-31) Copyright © Huawei Digital Power Technologies Co., Ltd.

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