Installation/User Manual APsystems YC500i Photovoltaic Grid-connected Inverter Version 1.0 7/16 APsystems 600 Ericksen Ave. NE Ste 200 Seattle, WA 98110 TEL: 844-666-7035 EMAIL: info@APsystems.com WEB: www.APsystems.
TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTIONS 1 Radio interference statement 2 APsystems YC500i system introduction 3 APsystems microinverter system installation 6 Installation procedure 7 APsystems microinverter system operating instructions 12 Troubleshooting 13 Troubleshooting a non-operating APsystems microinverter 14 Technical data 16 Wiring diagrams 18 APsystems YC500i Installation/User Manual iii
IMPORTANT SAFETY INSTRUCTIONS This manual contains important instructions 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.
RADIO INTERFERENCE STATEMENT RADIO INTERFERENCE STATEMENT FCC Compliance: The equipment can comply with the limits for a class B digital device, 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.
APSYSTEMS YC500I SYSTEM INTRODUCTION APsystems YC500I System Introduction The APsystems microinverter is used in utility-interactive grid-tied and is comprised of three key elements: grid-tied applications, comprised of The applications, APsystems microinverter is used in utility-interactive three key elements: ✹✹ APsystems microinverter • APsystems microinverter ✹✹ APsystems Energy Communication Unit (ECU) • APsystems Energy Communication Unit (ECU) ✹✹ APsystems Energy Monitor and Analy
APsystems microinverters maximize PV energy production Each PV module has individual Maximum Power Point 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.
The APsystems YC500 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 (page 16) of this manual. MODEL AC GRID PV MODULE NUMBER MAX.
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.
Required parts and tools In addition to your PV array and its associated hardware, you will need the following items: ✹✹ ✹✹ ✹✹ ✹✹ ✹✹ ✹✹ AC connection junction box Mounting hardware suitable for module racking Sockets and wrenches for mounting hardware AC Connector Unlock Tool Phillips screwdriver Torque wrench YC500I INSTALLATION PROCEDURES Step 1 - Position the AC bus cable Step 2 - Install the AC branch circuit junction box Figure 2 a) Install an appropriate junction box at a suitable location on th
a) Install an appropriate junction box at a suitable location on the PV racking system (typically at the end o a branch of modules). b) Connect the open wire end of the AC bus cable into the junction box using an appropriate gland or strain relief fitting.
WARNING: Prior to installing any of the microinverters, verify that the utility voltage at the point of Step 4 -‐ Connect the APsystems microinverter to AC bus cable common connection matches the voltage rating on microinverter label. WARNING: Do not mount the microinverter in a location that allows exposure to direct sunlight.
Cover any unused connectors with sealing caps to protect the connectors. Cover any unused connectors with sealing caps to protect the connectors. Cover any unused connectors with w sealing caps tco aps protect the connectors. Cover any unused connectors ith sealing to protect the connectors.
WARNING: DDouble ouble check check to to make make sure sure f the AC and DC wiring has been correctly installed. Ens WARNING: allall ofothe AC and DC wiring has been installed. Ensure that none ofothe AC and/or none of tcorrectly he AC and/or DC w ires are pinched r damaged. MDC ake sure that all of the junction boxes ar wires are pinched or damaged.
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 standard five-minute safety related delay. The units should start blinking green every two (2) seconds, five (5) minutes after turning on the AC circuit breaker.
TROUBLESHOOTING Status Indications and Error Reporting Start up LED One (1) quick red light followed by three (3) 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.
TROUBLESHOOTING A NON-OPERATING APSYSTEMS MICROINVERTER There are two possible overall areas of trouble: A. The microinverter may be malfunctioning. B. The microinverter is working fine but it is having trouble communicating 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.
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 PV module DC wire connectors from the microinverter. 3. Remove the microinverter from the PV array racking. 4. Cover the module with an opaque cover. B. Install a replacement microinverter to the rack.
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 YC500i datasheet for Input specifications. 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 YC500i EnergyMaxTM Microinverter Datasheet INPUT DATA (DC) MPPT Voltage Range 22-45V Operation Voltage Range 16V-52V Maximum Input Voltage 55V Startup Voltage 22V Maximum Input Current 12A X 2 OUTPUT DATA (AC) Nominal Output Voltage 208V* 240V* Peak Output Power 548W 548W Maximum Continuous Output Power 500W 500W Nominal Output Current 2.4A 2.08A Default Output Voltage Range 183V-229V** 211V-264V** Maximum Output Fault Current (peak) 33.4A 54.
ng Diagram YC500I Sample Sample Wiring Wiring Diagram Diagram –– 1 20V/240V SSplit plit PPhase hase YC500i 120V/240V Figure 12 20 APsystems YC500i Installation/User Manual 18
