Related Manuals for Ampt V750-20-20
Summary of Contents for Ampt V750-20-20
- Page 1 Ampt String Optimizer V750-20-20 V750-20-16 Installation Manual 57070017-1 A ©2021 Ampt LLC...
- Page 2 Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A...
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Page 3: Read This First
® within a photovoltaic (PV) installation. The result? Energy realized All Ampt trademarks are the property of Ampt, LLC. All trademarks are recognized even if they are not marked separately. Visit www.ampt.com/trademarks for a list of Ampt trademarks. Any unauthorized use of Ampt trademarks is prohibited. All other trademarks are the property of their respective owners. -
Page 4: Important Safety Instructions
Important Safety Instructions This manual contains important instructions for Ampt optimizers that shall be followed during installation and maintenance. The optimizer has been designed and tested according to international safety requirements, but requires certain precautions are observed when installing and/or operating the optimizer. To reduce the risk of personal injury and to ensure the safe installation and operation of the optimizer, please be sure you carefully read and follow all instructions and safety messages in this manual. -
Page 5: General Safety
Before installing or using the Ampt optimizer, read all instructions and safety messages on the optimizer and in this manual. Follow the safety precautions for this product as well as the other components in the PV system. -
Page 6: Disclaimer Of Liability
Readers are cautioned, however, that Ampt reserves the right to make changes without notice and shall not be responsible for any damages, including indirect, incidental or consequential damages, caused by reliance on the material presented, including, but not limited to, omissions, typographical errors, arithmetical errors or listing errors in the content material. -
Page 7: Before You Begin
Using Optional Wireless Communication NOTICE If the String Optimizers are being used with optional wireless communication, then refer to the Ampt Communication Unit (Ampt CU) manual for important requirements related to the String Optimizer installation. Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. -
Page 8: Table Of Contents
Connecting the Output ..........................25 Disconnecting the Output and Inputs ....................26 Parts and Tools Needed ..........................26 Steps ................................27 Appendix ..........................29 Compliance ............................29 Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A... - Page 9 Reference: Electrical Connection Order .................... 33 Handling and Storage Best Practices ......................34 Mounting Best Practices ..........................34 Electrical Connections Best Practices ......................34 Ampt Support Contacts ..........................34 Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved.
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Page 11: Chapter 1: Product Overview
50% with less circuitry and a higher power density. • High DC/AC – Ampt’s unique combination of output current limits and a higher DC bus voltage allows PV system designers to achieve optimal DC/AC ratios (up to 3:1). With Ampt, system owners can expand the DC power on existing systems without replacing inverters, combiners, or cables;... -
Page 12: Dimensional Drawings
Dimensional Drawings The dimensions for the String Optimizer shown below are in millimeters and inches. 8.66” 8.19” Figure 1: Dimensional drawings Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A... -
Page 13: Physical Overview
The image below shows the bar code label with model and serial numbers. Do NOT remove this label. Removing any label from the optimizer voids warranty. Bar code label Figure 3: Bar code tag with the model and serial numbers Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A... -
Page 14: Chapter 2: Understanding Electrical Configurations
Ungrounded PV Arrays Figure 4: Electrical connections for an ungrounded PV array Grounded PV Arrays (positive or negative) Figure 5: Electrical connections for a grounded PV array Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A... -
Page 15: Acceptable Input Configurations
National Electrical Code (ANSI/NFPA 70); Canadian Electrical Code, Part I; or the applicable standards, codes, and regulations for your region. The output current limit of the Ampt String Optimizer eliminates the need for the 1.25 multiplication factor for over-sun conditions when calculating ampacity. The 1.25 multiplier for continuous use is still required. -
Page 16: Inter-Row Shading Wiring Example
Inter-row Shading Wiring Example When inter-row shading is expected, the best practice is to wire the modules on the two inputs of the Ampt String Optimizer to be on the same row as shown below. Ampt String Optimizer to combiner... -
Page 17: Chapter 3: Installing The String Optimizer
Chapter 3: Installing the String Optimizer Getting Started This chapter addresses the proper mounting and installation of the Ampt String Optimizer. Read the entire chapter before starting the procedures and then conduct each task in the order given. Parts and Tools Needed •... -
Page 18: Mounting And Grounding The String Optimizer
All electrical installations must be done in accordance with the local and National Electrical Code ANSI/NFPA 70; Canadian Electrical Code, Part I; or the applicable standards, codes, and regulations for your region. The Ampt optimizer is to be installed so that it is not expected to be contacted by persons. CAUTION Keep connectors dry and clean. -
Page 19: Steps
Optimizer coating is 4 mil (0.1 mm). 4. Verify that the optimizer is adequately grounded using continuity tester. Figure 7: Example of optimizer mounted and grounded. Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. -
Page 20: Making Electrical Connections
Optimizer Ignore polarity markings on the Top View bulkhead connectors on the output Output Mating Connectors Top View Figure 8: Output connector polarity Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A... - Page 21 CAUTION Read the caution statements below: To reduce the risk of fire, connect the outputs of the Ampt equipment only to conductors with sufficient ampacity based on the maximum output fault current (maximum optimizer output current) for the chosen optimizer. Over-current protection devices and conductors shall be sized in accordance with the National Electrical Code (ANSI/NFPA 70);...
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Page 22: Connection/Disconnection Order Matters
Input 1. Cables from PV string Figure 9: Check the polarity and gender for PV string Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A... - Page 23 8. Connect the series of modules for Input 2 to the String Optimizer. Ensure that the locking mechanisms on the connectors are fully engaged. Figure 11: Connecting Input 2 Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved.
- Page 24 Figure 12: Verify proper installation 10. If you are connecting the output now, then proceed to the next section. Otherwise, use Amphenol Sealing Caps to protect the connectors until the output is connected. Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved.
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Page 25: Connecting The Output
8. Manage wires to prevent lateral strain on connectors and avoid movement of the connecting wires at all times. Pay special attention when in-line fuses are used and/or when mounted on a tracker. Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. -
Page 26: Disconnecting The Output And Inputs
CAUTION Read that caution statements below: The Ampt product contains no user-serviceable parts. All repairs and maintenance should be handled in accordance with the instructions and terms contained in the product warranty. The surface of the optimizer may be hot. -
Page 27: Parts And Tools Needed
Input 1 5. If the PV cables will not be immediately reconnected, use Amphenol sealing caps on the optimizer connectors to protect the unit from water and debris ingress. Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. -
Page 29: Appendix
The box is not meant to be user serviced or opened in any way. Model Numbering System The model numbers for Ampt String Optimizers are in the following format: • 31570020-xxxx (20A models, ranging from 400 – 1500V) • 31570021-xxxx (16A models, ranging from 400 – 1500V) •... -
Page 30: Fcc Compliance
(2) this device must accept any interference received, including interference that may cause undesired operation. IMPORTANT! Changes or modifications not expressly approved by Ampt, LLC could void the user’s authority to operate the equipment. -
Page 31: Specifications
Giteki 2-1-19; FCC Part 15, class A 1. Voc at coldest design temp. Follow Ampt’s design guidelines to determine the number of modules per input and max. system voltage. 2. Maximum Imp of modules on the input at standard test condition (STC) - irradiation level of 1000 W/m² at 25°C. -
Page 32: Models (V650 - V750)
Giteki 2-1-19; FCC Part 15, class A 1. Voc at coldest design temp. Follow Ampt’s design guidelines to determine the number of modules per input and max. system voltage. 2. Maximum Imp of modules on the input at standard test condition (STC) - irradiation level of 1000 W/m² at 25°C. -
Page 33: Reference: Electrical Connection Order
Note: Disconnect in reverse order (Output, Input 2, Input 1) using an Amphenol order can result in damage to the device. connector unlocking tool for H4 connectors (e.g. Amphenol p/n: H4TU0000) Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. -
Page 34: Handling And Storage Best Practices
• If using wireless communication, keep the antenna (located on the opposite side of the connectors) clear from obstructions. Line of sight from the optimizer to the Ampt Communication Unit (CU) is recommended. See Ampt CU manual for more information. - Page 36 Copyright 2021 Ampt LLC. V750-20 String Optimizer Platform All rights reserved. Installation Manual: 57070017-1 A...
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