Summary of Contents for ABB MICRO-0.25-I-OUTD-US-208/240
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ABB solar inverters Product manual MICRO-0.25/0.3/0.3HV-I-OUTD-US-208/240...
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IMPORTANT SAFETY INSTRUCTIONS This manual contains important safety instructions that must be followed during installation and maintenance of the inverter. SAVE THESE INSTRUCTIONS! Keep this document in a safe place near the inverter for easy access during installation and maintenance. THE INSTALLER MUST READ THIS DOCUMENT IN ITS ENTIRETY BEFORE INSTALLING OR COMMISSIONING THIS EQUIPMENT.
ontents ntroduction and safety ........................7 Warnings in this document ........................7 Equipment safety warnings ....................7 General installation warnings....................8 Electrical connection warnings ...................8 Safety instructions ..........................8 Thermal and voltage hazard ....................9 Location of safety notices and labels .................9 Appropriate usage ..........................9 Improper or prohibited use ....................9 Available models ..........................10 Regulatory label ........................10...
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roubleshooting ..........................33 Alarm messages generated by the MICRO inverter .................33 Verification of ground leakage ......................38 Behavior of a system without leakage ................38 Behavior of a system with leakage ...................39 Measuring the insulation resistance of the PV module ..............39 Making a service call ..........................40 aintenance .............................
Introduction and safety arnings in this document This is a list of special safety symbols used in this manual that highlight potential safety risks and/or useful information. The symbol usage is described below: CAUTION The reader should stop, use caution and fully understand the operations explained before proceeding.
1- Introduction and safety eneral installation warnings The inverter is designed and tested according to international safety requirements (UL1741/ IEEE1547); however, certain safety precautions must be observed when installing and operating this inverter. Read and follow all instructions, cautions and warnings in this installation manual.
1- Introduction and safety hermal and voltage hazard Certain parts may be extremely hot immediately following shut down due to normal Prior to touching any part of the inverter use care to ensure surfaces and equipment are at touch-safe temperatures and voltages before proceeding. Anytime the inverter has been disconnected from the AC utility grid, use extreme caution time to dissipate the charge.
(HV)). Each version is also available for either a 240Vac split phase or 208Vac single phase AC grid connection. All model dimensions are 10.5” x 9.7” x 1.37” and weigh 3-1/2 lb (1.65kg). Output power Model number MICRO-0.25-I-OUTD-US-208/240 MICRO-0.3-I-OUTD-US-208/240 MICRO-0.3HV-I-OUTD-US-208/240 egulatory label 2.
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1- Introduction and safety 5. AC output ratings 6. Environmental rating 7. Serial number 8. MAC address...
1- Introduction and safety roduct identification label The sample product shown provides the following information: and the product label above, are attached to the inverter in a plastic bag as shown below. Use the small label to create a map of the system for use with the monitoring software. A template to be used for the diagram can be found in part 7.
Installation location ransportation and handling shocks, humidity, etc. ncoming inspection It is the customer’s responsibility to examine the condition of the unit. Upon receipt of the inverter check the following: Inspect the shipping container for any external damage. Inventory the contents against list below; verify receipt of all items. Use care not to discard any equipment, parts, or manuals.
2 - Installation location verall dimensions and minimum clearances and roof. nvironmental check of installation location See technical data in part 7 to check the environmental parameters to be observed (degree of protection, temperature, humidity, altitude, etc.) The maximum operational ambient air temperature MUST be considered when choosing the inverter installation location.
2 - Installation location nstallation position Install the inverter underneath the photovoltaic modules so that they work in the shade; if this condition cannot be met, the inverter could undergo power reduction. Any maintenance or replacement of the device could require the technician to dismount the photovoltaic module mounted on the top of the MICRO inverter.
2 - Installation location hoice of AC cable The AC cable is shipped on a reel with the connectors pre-mounted. The available spacing between connectors is: 41”, 67”, and 81”. The installer is responsible for choosing the AC cable model with the correct spacing on the basis of the orientation (shown below) and type of photovoltaic modules.
3 - Mounting and wiring ssembly instructions 1. Run the AC cable along the racking system used for installing the photovoltaic modules. The cable must be compatible with the expected installation conditions, particularly concerning the number of modules and their orientation (portrait or landscape). Legislation in force in the country of installation and the installed power will determine the maximum number of MICRO inverters permitted for installation at each AC cable section.
3 - Mounting and wiring C grounding electrode conductors for each MICRO inverter The conductor linking the assembly to the grounding distribution structure must be at Tighten with 2Nm (17.7 in-lb) torque. Ensure that the quality of the bond made between the conductor and the structure is secure.
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3 - Mounting and wiring 4. Fasten the AC-TRUNK cable to the frame with listed cable ties. Each connector is provided with two guides for ideal fastening. Cable ties are not supplied with the inverter or AC-TRUNK cable. Use listed cable ties rated to 75°C.
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3 - Mounting and wiring 6. Fit the appropriate AC-trunk end cap on the unused ends of the AC-trunk cable. Connect the AC-TRUNK cable/s coming from the MICRO inverters to the junction box or to the AC distribution panel. 8. Use the duplicate label in the attached plastic bag to create a map of the system by placing the adhesive labels on the diagram (found in the appendix, part 7).
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3 - Mounting and wiring 9. Plug the DC cables into the corresponding inputs on the MICRO inverters and install the photovoltaic modules. It is recommended to install the MICRO inverters underneath the PV modules to operate in the shade. Direct sunlight may cause elevated temperatures and consequently power limiting.
3 - Mounting and wiring nstalling the AC trunk end cap The unused ends of the AC-trunk cable must be terminated; the following is necessary for properly installing the cap: Fit the ring nut and gasket around the cross section of the cable to terminate. Strip 18-25 mm/0.7in –...
3 - Mounting and wiring Disconnection of the MICRO inverter AC cable: Removal of the AC trunk plug cap iring details oad protection switch (AC disconnect switch) The dimensions of the thermal-magnetic circuit breaker should be determined by the number of MICRO inverters connected to a single AC line.
3 - Mounting and wiring ifferential protection downstream of the inverter ABB Micro inverters with a high frequency transformer are equipped with an isolation transformer for each of the DC/DC converters which operate at high frequency (switch-over frequency of the converter). This transformer allows for high frequency galvanic isolation between the DC and AC side of the system.
The installation technician is responsible for selecting a junction box with the appropriate dimensions and insulation. Do not to reverse the phase with the neutral! It is required that the CDD be installed with any ABB MICRO inverter in compliance with UL1741, for the purpose of indication and resetting of ground faults.
Operations ommissioning The MICRO inverter operating state is controlled through the CDD. The MICRO inverters must be acquired using the CDD before commissining the inverter. knowledge of the CDD equipment and the functions that have been enabled in the installation. The CDD Quick Installation Guide is shipped with the CDD and can be found on the website along with the CDD product manual.
4 - Operations ED indicators LED behavior of MICRO inverters with LED on front panel System Description Grid Duration GREEN Status Power Connection 1 Start up MICRO 10sec. 50% DUTY virgin CYCLE, PERIOD 2SEC 2 Start up MICRO 10sec. SOLID GREEN acquired STATIC PHASE No DC...
Troubleshooting larm messages generated by the MICRO inverter The equipment communicates errors/warnings via radio to the associated CDD. Any messages received and ror (Exxx) messages generated by the MICRO inverters and displayed on the CDD, refer to the table below. Display code Cause Solution...
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5 - Troubleshooting Display code Cause Solution LED status Alarm message E006 The error appears when the inverter a) Check that the grid voltage is stable, blinking red output current exceeds the internal mainly upon: Output OC inverter alarm threshold. - loading with high current peak loads.
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5 - Troubleshooting Display code Cause Solution LED status Alarm message E018 The error is generated when a ground blinking green leakage current is detected in the DC age” and “Measuring the insulation Ground fault section of the system. This may be resistance”...
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5 - Troubleshooting Display code Cause Solution LED status Alarm message E051 The set grid standard is not compat- Solid red in the installation must be updated to a Country Not MICRO inverter. This condition may compatible version. Firmware updates Comp be generated if a MICRO inverter is replaced.
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5 - Troubleshooting Display code Cause Solution LED status Alarm message This alarm is generated when one or If the error is generated only on one of Blinking green more grid parameters lie outside the the installation MICRO inverters, this Grid Fail permitted range set by the country of may be due to an inverter fault.
5 - Troubleshooting erification of ground leakage In the presence of anomalies or report of ground fault, there may be a ground leakage from the photovoltaic module. To check this, measure the voltage between the positive pole and ground and between the negative pole and ground using a voltmeter.
5 - Troubleshooting ehavior of a system with leakage If the voltage measured between one of the two poles and ground does not tend to 0V and stabilizes on a value, there is a ground leakage from the photovoltaic module. easuring the insulation resistance of the PV module To measure the insulation resistance of the photovoltaic module compared to ground, the two poles of the PV generator must be short-circuited (using a suitably sized selector), and verify that the chassis of the module...
5 - Troubleshooting If the measured insulation resistance is less than 1Kohm the inverter does not connect to the grid due to a low insulation of photovoltaic module respect to ground. The insulation resistance is affected by the environmental conditions the photovoltaic module is in (E.g.: pho- tovoltaic module wet from dump or rain);...
Maintenance outine maintenance or generate electrostatic charges. The maintenance schedule may vary depending on the environmental conditions of the installation site. Maintenance operations must be carried out with the equipment disconnected from the grid (power switch open) and the photovoltaic modules obscured or isolated, unless otherwise indicated.
ABB CANNOT be held responsible for disposal of the equipment, displays, cables, batteries, etc. The customer must dispose of these substances, which are potentially harmful to the environment, in accordance with the regulations in force in the country of installation.
Appendix he MICRO inverter system This system is composed of a group of MICRO Inverters that convert direct electric current from a photovoltaic module into alternating electric current and feed it into the utility grid. Photovoltaic modules transform energy from the sun into direct current (DC) electrical energy (through a rotating parts and only through static electronic devices.
7 - Appendix unctionality of the equipment Data transmission and control The MICRO inverters are monitored remotely through an advanced communications system based on a wireless connection and the CDD. In addition to local monitoring of the system, it is possible to have remote data visualization through an internet access to AURORA® VISION web portal.
7 - Appendix ower reduction curves In order to allow inverter operation in safe thermal and electrical conditions, the unit automatically reduces the value of the power fed into the grid. Power reduction can take place due to adverse environmental conditions or due to unsuitable input voltage values.
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7 - Appendix Power reduction due to input voltage The graphs show the automatic reduction of supplied power when input voltage values are too high or too low. The conditions for power reduction due to environmental conditions and input voltage can also occur at the same time, but the power reduction will always relate to the lower value measured.
7 - Appendix lock diagram The diagram at right summarizes the layout of the MICRO inverter. The main blocks are the DC-DC input converter (the “boost” section) and the DC- AC output inverter. Both work at a high switching frequency, are small and relatively light. The inverter is equipped with a single input converter with Maximum Power Point Tracking (MPPT) to which it is possible to connect a single photovoltaic...
7 - Appendix iring diagram – 208Vac three phase If several MICRO inverters are installed in a three-phase AC GRID, it is recommended to distribute the inverters between the phases in order to reduce the power unbalances between the phases. Refer to the local standards.
7 - Appendix echnical data and types Type code MICRO-0.25-I-OUTD MICRO-0.3-I-OUTD MICRO-0.3HV-I-OUTD Nominal output power 250W 300W 300W Rated grid AC voltage 208V 240V 208V 240V 208V 240V Maximum output power 260W 310W 310W Input side (DC) Maximum usable DC input power Maximum PV panel rating (STC) 300W 360W...
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