Installation / User Manual
Contents
1. To register your APsystems microinverter please mail this warranty registration card to emasupport altenergy power com2. BLACK L WHITE N GREEN GROUND METER AC JUNCTION BOX SOLAR PANEL E d HS S4 v A APsystems BRANCH END CAP YC250 120A INSTALLED ON THE UP TO 7 YC250 PER OPEN AC CONNECTOR BRANCH CIRCUIT ETHERNET CONNECTION TO BROADBAND ROUTER 120 VAC POWER CABLE ORAC DISTRIBUTION ECU ENERGY COMMUNICATION UNIT GROUND NEUTRAL PANEL 20 AMP CIRCUIT BREAKER PER BRANCH CIRCUIT DISTRIBUTION PANEL 120V 240V SPLIT PHASE 120A Installation User Manual APsystems YC250 APsystems Microinverter amp Energy Communication Unit Warranty Card The APsystems Installation Map 1s a diagram of the physical location of each microinverter in your PV installation Each APsystems microinverter has a removable serial number label located on the mounting plate Peel the label and affix it to the respective location on the APsystems installation map Installation Map Template 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
3. Range Dimensions W x H x D Weight AC CABLE Enclosure Rating Cooling Features amp Compliance Communication Design Lifetime Emissions amp Immunity EMC Compliance 180W 310W 16V 55V 24V 45V 16V 52V 55V 22V 11 5A 120 250W 2 08A 105V 132V 17 83A 2 95A 18 27ms 95V 155V 60Hz 59 3 2 60 5 2 55 1Hz 64 9Hz 50 99 396 7 for 20A Breaker 95 596 9596 99 596 120mW 40 F to 149 F 40 C to 65 C 40 F to 185 F 40 C to 85 C 160mm 150mm x 29mm 6 3 x 5 9 x 1 1 3 3lbs 1 5kg 12AWG NEMA 6 Natural Convection Power line 25yrs FCC Part15 Monitoring Life monitoring via EMA software Safety Class Compliance UL1741 Grid Connection Compliance 1547 Specifications subject to change without notice please ensure you are Programmable through ECU to meet customer need using the most recent update found at www APsystems com Depending on the local regulations All Rights Reserved APsystems YC250 120A Installation User Manual 18 o 5 iring W Sample Wiring Diagram 120V 240V Split Phase Figure 14 AC BRANCH END CABLE a TO METER
4. to send performance data over power line to the ECU The time required for all the Microinverters in the system to report to the ECU will vary with the number of Microinverters in the system You can verify proper operation of the APsystems Microinverters via the ECU See the ECU Installation and Operation Manual for more information NOTE Once AC power is applied about current and 25VA W power for each microinverter may be measured with a meter This Current and Power are Reactive The inverters ARE NOT operating After an over 300s waiting time the inverters will start operation APsystems YC250 120A Installation User Manual 13 Troubleshooting Qualified personnel can use the following troubleshooting steps if the PV system does not operate correctly Status Indications and Error Reporting Start up LED One quick red light followed by three short green blinks when DC power is first applied to the Microinverter indicates a successful Microinverter startup Operation LED Flashing Slow Green 10 sec gap Producing power and communicating with ECU Flashing Fast Green 2 sec gap Producing power and not communicating with ECU over 60mins Flashing Red Not producing power GFDI Error A solid red LED indicates the Microinverter has detected a Ground Fault Detector Interrupter error in the PV system Unless the error has been cleared the LED will remain red and the ECU will keep reporting the fa
5. ALTENERGY POWER P APsystems e Installation User Manual APsystems YC250 120A Photovoltaic Grid connected Microinverter Version 1 0 APsystems America 600 Ericksen Ave NE Suite 2 TEL 844 666 7035 EMAIL i ights Reserve For USA Canada TABLE OF CONTENTS Important Safety INSCFUCTIONS e Safety Instr ctlOns eie E bee i eere 2 Radio interference 4 4 4 4 10 nennen nnne 3 APsystems Microinverter System 2 2 1 eese esee seen oe eeee esee esses 4 APsystems Microinverter YC250 120A Introduction ecce eese eee eerte ee ee eese eese APsystems Microinverter System Installation ecce eee eee ee eee e ee eee eese esso o 7 Additional Installation components from APSYStEMS c ccccscceesssceessecesssecesssecesscecesseessusecsseeecssseeesseeeseecesees 7 Required Parts Tools fromiyou scc roter eee DR Ed ete 7 Installation Procedures rere tet ER He RYE ATE RESER ERR FEN Ree RV e Rs 8 Step 1 Installing the AC Branch Circuit Junction BOX esses enne nenne enhn enne 8 Step 2 Attaching the APsystems Microinverters to the Racking or the PV
6. APsystems YC250 120A Installation User Manual 16 Technical Data WARNING Be sure to verify the voltage and current specifications of your PV module match with those of the Microinverter Refer to the APsystems website www APsystems com for a list of approved PV modules WARNING You must match the DC operating voltage range of the PV module with the allowable input voltage range of the APsystems Microinverter WARNING The maximum open circuit voltage of the PV module must not exceed the specified maximum input voltage of the APsystems APsystems YC250 120A Installation User Manual 17 APsystems YC250 120A Microinverter Datasheet Input Data DC Recommended PV Module Power STC Range MPPT Voltage Range MPPT Voltage Range 9 Full Power Operation Voltage Range Maximum Input Voltage Startup Voltage Maximum Input Current Output Data AC Nominal Output Voltage Maximum Continuous Output Power Nominal Output Current Default Output Voltage Range Maximum Output Fault Current peak Maximum Output Fault Current RMS Maximum Output Fault Current Duration Extended Output Voltage Range Nominal Output Frequency Default Output Frequency Range Extended Output Frequency Range Power Factor Total Harmonic Distortion Maximum Units per Branch Efficiency Peak Efficiency CEC Weighted Efficiency Nominal MPPT Efficiency Night Power Consumption Mechanical Data Operating Ambient Temperature Range Storage Temperature
7. Module 9 Step 3 Connecting the APsystems Microinverter AC Cables 10 Step 4 Connecting APsystems Microinverters to the PV 2 Step 5 Completing the APsystems Installation 04000400 nennen enhn 12 APsystems microinverter system operating instructions esee 13 TroubleshOOting ee oie aaa roo Fo Fa 2 699098880680 Fee n aene 14 Status Indications and Error REPOrting ccccccccssccesssccssccccsssecesseccesseccessecesseecesseccesseceesecceeaecceaeceesaecesseeessaees 14 casi mE 14 Operation p E 14 cisee T 14 LEER 14 Troubleshooting a non operating APsystems Microinverter esee enne 15 ese lO Uum t Wa APsystems YC250 120A Microinverter Datasheet neret nnne nnne entren 18 Wiring Dist Sample Wiring Diagram 120V 240V Split 42 20 0 20000 19 APsystems YC250 120A Installation User Manual 1 Important Safety Instructions This manual contains important instr
8. cating with the ECU The items below refer to Microinverter issues not communication issues addressed in the ECU manual A quick way to tell whether the issue is the Microinverter or a communication problem with the ECU 1 Diagnosing from the Microinverter A red light either blinking or solid on the Microinverter or no light at all No light or a red light means it is definitely a Microinverter problem 2 Diagnosing from the ECU a No Data Display This is probably a communication issue not a Microinverter problem b Problems with erratic display Data is displayed for some period and then no data is displayed most likely a communication issue c 0 watts or 2 watts Possibly a Microinverter problem d Erratic data display that is not coordinating with data displays from other units most likely a Microinverter problem To troubleshoot a non operating APsystems Microinverter Follow the steps below in order 1 Verify the utility voltage and frequency are within ranges shown in the Technical Data section of this manual 2 Check the connection to the utility grid Verify utility power 1s present at the inverter in question by removing AC then DC power Never disconnect the DC wires while the microinverter is producing power Re connect the DC module connectors and watch for three short LED flashes 3 Check the AC branch circuit interconnection between all the microinverters Verify each inverter 1s energized by the util
9. e rating on microinverter label proper air flow A APsystems YC250 120A Installation User Manual 9 Installation Procedures Step 3 Connecting the APsystems Microinverter AC Cables i gt c Figure 6 Figure 7 a Check the Microinverter technical data page P 18 for the maximum allowable number of Microinverters on each AC branch circuit b Plug the AC female connector of the first Microinverter into the male connector of the next Microinverter and so on to form a continuous AC branch circuit c Install a protective end cap on the open AC connector of the last Microinverter 1n the AC branch circuit Figure 8 WARNING Do NOT exceed maximum number of Microinverters in an AC branch circuit as displayed on the Technical Data page p 17 of this manual NOTE Please contact with ALTENERGY POWER SYSTEM Inc for the purchase of AC extended cables when microinverters which are installed space far and AC cable 1s not long enough APsystems YC250 120A Installation User Manual 10 Installation Procedures Step 4 Connecting APsystems Microinverters to the PV Module Connect the DC cables from the PV Modules to the Microinv
10. ebsite to obtain a solar panel list which can match with APsystems Microinverters www APsystems com Max AC grid PV Module Module Connector Per branch 7 for 20A YC250A 120A 60Hz 120V 60 72 Cell MC 4 Type or Customize breaker 7 for 20A YC2501 120A 60Hz 120V 60 72 Cell oe MC 4 Type or Customize APsystems YC250 120A Installation User Manual 6 APsystems Microinverter System Installation A PV system using APsystems Microinverters is simple to install Each Microinverter easily mounts on the PV racking directly beneath the PV module s Low voltage DC wires connect from the PV module directly to the Microinverter eliminating the risk of high DC voltage Installation MUST comply with local regulations and technical rules Special Statement AC GFCI device should not be used to protect the dedicated circuit to the APsystems microinverter even though it is an outside circuit None of the small GFCI devices 5 30 mA are designed for back feeding and will be damaged if back feed In a similar manner AC AFCIs have not been evaluated for back feeding and may be damaged if back feed with the output of a PV inverter WARNING Perform all electrical installations in accordance with local electrical codes WARNING Be aware that only qualified professionals should install and or replace APsystems Microinverters WARNING Before installing or using an APsystems Microinverter please read all instructions and warnings
11. erter per the diagram below NOTE When plugging in the DC cables the Microinverter should immediately blink green three times This will happen as soon as the cables are plugged in and will show that the Microinverter is functioning correctly This entire check function will start and end within 5 seconds of plugging in the unit so pay careful attention to these lights when connecting the DC cables Figure 10 APsystems YC250 120A Installation User Manual Installation Procedures WARNING Insure that all AC and DC wiring is correct Check that none of the AC and DC wires are pinched or damaged Be sure that all junction boxes are properly closed Step 5 Completing the APsystems Installation Map Fill in the APsystems Registration Cards which provide system information and the installation map Feel free to provide your own layout if a larger or more intricate installation map is required The layout map provided is designed to accomodate labels in vertical or horizontal orientation to meet all the field PV connections a Each APsystems Microinverter has removable serial number labels Peel labels off affix one to the respective location on the APsystems installation map and affix another label to the PV module frame which is easy to see The warranty cards can obtain fr
12. gure 2 To distribution box Step 1 Installing the AC Branch Circuit Junction Box Figure 3 a Install an appropriate junction box at a suitable location on the PV racking system typically at the end of a branch of modules b Connect the open wire end of the AC branch end cable into the junction box using an appropriate gland or strain relief fitting c Wire the conductors L BLACK N WHITE PE GREEN d Connect the AC branch circuit junction box to the point of utility interconnection APsystems YC250 120A Installation User Manual 8 Installation Procedures Step 2 Attaching the APsystems Microinverters to the Racking or the PV Module Frame a Mark the location of the Microinverter on the rack with respect to the PV module junction box or any other obstructions b Mount one Microinverter at each of these locations using hardware recommended by your module racking vendor Option 1 Figure 4 Option 2 Figure 5 WARNING Do not mount the Microinverter in a location that allows exposure to direct sunlight Allow a minimum of 3 4 1 5cm between the roof and the bottom of the Microinverter to allow WARNING Prior to installing any of the microinverters verify that the utility voltage at the point of common connection matches the voltag
13. iance may void the user s authority to operate the equipment APsystems YC250 120A Installation User Manual 3 APsystems Microinverter System Introduction The APsystems Microinverter is used in utility interactive grid tied applications comprised of three key elements e APsystems Microinverter e APsystems Energy Communication Unit ECU e APsystems Energy Monitor and Analysis EMA web based monitoring and analysis system m Neutral Ground Outlet Distribution Box gt ao aar 68 gt LL Internet EMA APsystems Microinverter AC powerline APsystems ECU Ethernet Router 6 APsystems EMA Figure 1 APsystems YC250 120A Installation User Manual 4 APsystems Microinverter System Introduction This integrated system improves safety maximizes solar energy harvest increases system reliability and simplifies solar system design installation maintenance and management APsystems Microinverters maximize PV energy production Each PV module has individual Maximum Peak Power Tracking MPPT controls which ensures that the maximum power is exported to the utility grid regardless of the performance of the other PV modules in the array When PV modules in the array are affected by shade dust orientation or any situation in which one module underperforms compared with the other units the APsystems Microinverter ensures top performance from the array by maximizing the perf
14. in the technical documents and on the APsystems Microinverter system itself as well as on the PV array WARNING Be aware that installation of this equipment includes the risk of electric shock WARNING Do not touch any live parts in the system including the PV array when the system has been connected to the electrical grid Strongly recommend to install Surge protection Devices in the dedicated meter box A Additional Installation components from APsystems e AC branch end cable 1 per branch sold separately e Protective end cap 1 per branch sold separately Required Parts and Tools from you In addition to your PV array and its associated hardware you will need the following items e An AC connection junction box Mounting hardware suitable for module racking Sockets and wrenches for mounting hardware Continuous grounding conductor and grounding washers A Phillips screwdriver A torque wrench APsystems YC250 120A Installation User Manual Installation Procedures APsystems Microinverters are designed to only operate when they can sense power coming from the grid Even if they are plugged into the solar array they will not turn themselves on until they can read power from the grid WARNING Do NOT connect APsystems Microinverters to the utility grid or energize the AC circuit until you have completed all of the installation procedures as described in the following sections c Fi
15. ity grid as described in the previous step 4 Make sure that any AC breaker are functioning properly and are closed 5 Check the DC connections between the microinverter and the PV module 6 Verify the PV module DC voltage is within the allowable range shown in the Technical Data P 17 of this manual 7 Ifthe problem persists please call APsystems Energy customer support WARNING Do not attempt to repair the APsystems microinverter If troubleshooting methods fail please return the microinverter to your distributor for replacement APsystems YC250 120A Installation User Manual 15 Replace a microinverter Follow the procedure to replace a failed APsystems Microinverter A Disconnect the APsystems Microinverter from the PV Module in the order shown below 1 Disconnect the AC by turning off the branch circuit breaker 2 Disconnect the first AC connector in the branch circuit 3 Disconnect the PV module DC wire connectors from the microinverter 4 Remove the Microinverter from the PV array racking 5 Cover the module with an opaque cover B Install a replacement Microinverter to the rack Remember to observe the flashing LED light as soon as the new Microinverter is plugged into the DC cables C Connect the AC cable of the replacement Microinverter and the neighboring Microinverter to complete the branch circuit connections D Close the branch circuit breaker and verify operation of the replacement Microinverter
16. markings in the technical documents and on the APsystems Microinverter system and the solar array v Be aware that the body of the APsystems Microinverter is the heat sink and can reach high temperatures To reduce risk of burns do not touch the body of the Microinverter Yv Do NOT attempt to repair the APsystems Microinverter If it fails contact APsystems Customer Support 844 666 7035 to obtain an RMA number and start the replacement process Damaging or opening the APsystems Microinverter will void the warranty APsystems YC250 120A Installation User Manual 2 Radio interference statement FCC Compliance The equipment can comply with the limits for a class B digitaldevice pursuant to part 15 of the FCC Rules which are designed to protect against harmful interference in a residential installation The equipment could radiate radio frequency energy and this might cause harmful interference to radio communications if not following the instructions when installing and using the equipment But there is no guarantee that interference will not occur in a particular installation If this equipment causes harmful interference to radio or television reception the following measures might resolve the issues A Relocate the receiving antenna and keep it well away from the equipment B Consult the dealer or an experienced radio TV technical for help Changes or modifications not expressly approved by the party responsible for compl
17. om the appendix of this manual or APsystems website www APsystems com b Fill the warranty cards and email to APsystems at emasupport altenergy power com c APsystems will create the EMA account and email you the account information Then you can use the EMA website to view detailed performance of your PV system You can learn more information on energy monitoring and analysis system from APsystems website www APsystems com a Figure 11 NOTE 1 Step 1 5 change sequence for convenience of installation 2 Warranty card is located in Appendix last page of this manual APsystems YC250 120A Installation User Manual 12 APsystems microinverter system operating instructions To operate the APsystems microinverter PV system 1 Turn ON the AC circuit breaker on each microinverter AC branch circuit 2 Turn ON the main utility grid AC circuit breaker Your system will start producing power after a five minute waiting time 3 The units should start blinking green every 2 seconds five minutes after turning on the AC circuit breaker This means they are producing power normally but have not yet connected to the ECU After the ECU has been plugged in and acknowledges the Microinverters they will start to blink green every 10 seconds 4 Plug in the ECU and follow the instructions according to the manual for the ECU 5 The APsystems Microinverters will start
18. ormance of each module within the array More reliable than centralized or string inverters The distributed APsystems Microinverter system ensures that no single point of system failure exists across the PV system APsystems Microinverters are designed to operate at full power at ambient outdoor temperatures of up to 149 F 65 C The inverter housing is designed for outdoor installation and complies with the NEMA 6 environmental enclosure rating Simple to install You can install individual PV modules in any combination of module quantity orientation type and power rate Smart system performance monitoring and analysis The APsystems Energy Communication Unit ECU 1s installed by simply plugging it into any wall outlet and providing an Ethernet or Wi Fi connection to a broadband router or modem After installing the ECU the full network of APsystems Microinverters automatically reports to the APsystems Energy Monitor and analysis EMA web server The EMA software displays performance trends informs you of abnormal events and controls system shutdown when it is needed See ECU manual for instructions APsystems YC250 120A Installation User Manual 5 APsystems Microinverter YC250 120A Introduction The APsystems YC250A I 120A Microinverters connect with the Split phase grid and operate with most 60 and 72 cell PV modules For more information please see the Technical Data page p 17 of this manual or sign in APsystems w
19. uctions to follow during installation and maintenance of the APsystems Photovoltaic Grid connected Inverter Microinverter To reduce the risk of electrical shock and ensure the safe installation and operation of the APsystems Microinverter the following symbols appear throughout this document to indicate dangerous conditions and important safety instructions SAVE THESE INSTRUCTIONS This manual contains important instructions for models YC250A 1 120A that must be followed during installation and maintenance of the Photovoltaic Grid connected Inverter Specifications subject to change without notice please ensure you are using the most recent update found at www APsystems com WARNING This indicates a situation where failure to follow instructions may cause a serious hardware failure or personnel danger if not applied appropriately Use extreme caution when WARNING performing this task SYMBOL NOTE This indicates information that is important for optimized Microinverter operation Follow these instructions closely NOTE SYMBOL Safety Instructions v Do NOT disconnect the PV module from the APsystems Microinverter without first disconnecting the AC power Y Only qualified professionals should install and or replace APsystems Microinverters Y Perform all electrical installations in accordance with local electrical codes Y Before installing or using the APsystems Microinverter please read all instructions and cautionary
20. ult After the ground fault error 16 fixed follow the instructions in the ECU Installation and Operation Manual to clear this GFDI error reporting Other Faults other faults are reported to the ECU Refer to the ECU Installation and Operation Manual for a list of additional faults and troubleshooting procedures WARNING Only qualified personnel should directly handle the APsystems microinverter WARNING Never disconnect the DC wire connectors under load Ensure that no current 1s flowing the DC wires prior to disconnecting opaque covering may be used to cover the module prior to disconnecting the module WARNING Always disconnect AC power before disconnecting the PV module wires from the APsystems microinverter Either disconnecting by the appropriate AC circuit breaker or unplugging the first AC connector of the first Microinverter in a branch circuit is suitable as a means of disconnection WARNING The APsystems microinverter is powered by PV module DC power AFTER disconnecting the DC power when reconnecting the PV modules tothe Microinverter be sure to watch for the three short LED flashes APsystems 250 120 Installation User Manual 14 Troubleshooting Troubleshooting a non operating APsystems Microinverter There are two possible overall areas of trouble A The Microinverter itself may be having problems B The Microinverter itself is working fine but it is having trouble communi
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