APsystems YC600 User manual

Installation / User Manual
Rev 1.0
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ALTENERGY POWER SYSTEM Inc.
WEB: www.APsystems.com
APsystems Australia
Suite 502, 8 Help Street, Chatswood NSW 2067 Australia
TEL: [phone] EMAIL: [e-mail]
© All Rights Reserved (For Australia / New Zealand)
YC600 Microinverter

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Table of Contents
1.Important Safety Instructions.......................................................................................................... 2
1.1 Safety Instructions ........................................................................................................................2
1.2 Radio Interference Statement.........................................................................................................3
1.3 Symbols replace words on the equipment, on a display, or in manuals ................................................4
2.APsystems Microinverter System Introduction............................................................................... 5
3.APsystems Microinverter YC600 Introduction ................................................................................ 7
4.APsystems Microinverter System Installation.................................................................................8
4.1 Additional Installation components from APsystems.........................................................................8
4.2 Required Parts and Tools from you .................................................................................................8
4.3 Installation Procedures ..................................................................................................................9
4.3.1 Step 1 - Verify the grid voltage to match with microinverter rating ............................................9
4.3.2 Step 2 - The AC bus distribution ............................................................................................9
4.3.3 Step 3 - Attach the APsystems Microinverters to the racking or the PV module frame ..................9
4.3.4 Stpe 4 - Connect the APsystems microinverter to AC bus cable ...............................................10
4.3.5 Step 5 - Install a AC bus protective end cap at the end of AC bus cable.....................................11
4.3.6 Step 6 - Connect APsystems Microinverters to the PV Module s ...............................................11
4.3.7 Step 7 - Complete the APsystems installation map ................................................................12
5.APsystems microinverter system operating instructions ............................................................. 14
6.Troubleshooting.............................................................................................................................. 15
6.1 Status Indications and Error Reporting ..........................................................................................15
6.1.1 Start up LED .....................................................................................................................15
6.1.2 Operation LED ..................................................................................................................15
6.1.3 IRD Error..........................................................................................................................15
6.1.4 Other Faults .....................................................................................................................15
6.2 Troubleshooting a non-operating APsystems Microinverter..............................................................16
6.3 Maintenance..............................................................................................................................16
7.Replace a microinverter.................................................................................................................17
8.Technical Data.................................................................................................................................18
8.1 YC600 Microinverter Datasheet ....................................................................................................19
9.Wiring Diagram............................................................................................................................... 19
9.1 Sample Wiring Diagram - Single Phase...........................................................................................20

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1.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.
Specifications subject to change without notice - please ensure you are using the most recent
update found at www.APsystems.com
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 performing this task.
This indicates information that is important for optimized microinverter operation.
Follow these instructions closely.
1.1 Safety Instructions
Do NOT disconnect the PV module from the APsystems Microinverter without first
disconnecting the AC power.
Only qualified professionals should install and/or replace APsystems Microinverters.
Perform all electrical installations in accordance with local electrical codes.
Before installing or using the APsystems Microinverter, please read all instructions and
cautionary markings in the technical documents and on the APsystems Microinverter
system and the solar-array.
Be aware that the body of the APsystems Microinverter is the heat sink and can reach a
temperature of 80°C. To reduce risk of burns, do not touch the body of the Microinverter.
Do NOT attempt to repair the APsystems Microinverter. If it fails, contact APsystems
Customer Support to obtain an RMA number and start the replacement process. Damaging
or opening the APsystems Microinverter will void the warranty.
Caution!
The external protective earthing conductor is connected to the inverter protective earthing
terminal through AC connector. When connecting, connect the AC connector first to ensure
the inverter earthing then do the DC connections. When disconnecting, disconnect the AC
by opening the branch circuit breaker first but maintain the protective earthing conductor
in the branch circuit breaker connect to the inverter ,then disconnect the DC inputs.
In any circumstance, do not connect DC input when AC connector is unplugged.
Please install isolation switching devices on the AC side of the inverter.

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1.Important Safety Instructions
1.2 Radio Interference Statement
CE EMC Compliance：The equipment can comply with CE EMC, 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 compliance may
void the user’s authority to operate the equipment.

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1.Important Safety Instructions
1.3 Symbols replace words on the equipment, on a display, or in
manuals
Trademark.
Caution, risk of electric shock.
Caution, hot surface.
Symbol for the marking of electrical and electronics devices according to Directive
2002/96/EC. Indicates that the device, accessories and the packaging must not be
disposed as unsorted municipal waste and must be collected separately at the end of
the usage. Please follow Local Ordinances or Regulations for disposal or contact an
authorized representative of the manufacturer for information concerning the
decommissioning of equipment.
Refer to the operating instructions.
Qualified
personnel
Person adequately advised or supervised by an electrically skilled person to enable
him or her to perceive risks and to avoid hazards which electricity can create. For
the purpose of the safety information of this manual, a "qualified person" is
someone who is familiar with requirements for safety, refrigeration system and
EMC and is authorized to energize, ground, and tag equipment, systems, and
circuits in accordance with established safety procedures. The inverter and endues
system may only be commissioned and operated by qualified personnel.

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2.APsystems Microinverter System Introduction
The APsystems Microinverter is used in utility-interactive grid-tied applications, comprised of
three key elements:
APsystems Microinverter
APsystems Energy Communication Unit (ECU)
APsystems Energy Monitor and Analysis (EMA) web-based monitoring and analysis
system
Figure 1
PV
Module
ECU Ground
Neutral
Meter
Junction Box
YC600
Internet EMA

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2.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 performance 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 Microin-verters are designed to operate at full power
at ambient outdoor temper-atures of up to 149°F (65°C). The inverter housing is designed for
outdoor installation and complies with the IP67 environmental enclosure rating.
Simple to install
You can install individual PV modules in any combination of Module quantity, orientation,
different type and power rate (check our online module compatibility checker called Edecider or
contact APsystems).The Ground wire (PE) of the AC cable is connected to the chassis
inside of the Microinverter,potentially eliminating the installation of grounding
wire (check local regulation).
Smart system performance monitoring and analysis
The APsystems Energy Communication Unit (ECU) is installed by simply plugging it into any
wall outlet and providing an Ethernet or Wi-Fi connection to abroadband router or modem.
After installing and setting the ECU(see ECU manual),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.)

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3.APsystems Microinverter YC600 Introduction
The APsystems YC600 Microinverters connect with the single-phase grid, and can also use
multiple APsystems Microinverters in the form of single-phase grid to achieve three-phase grid,
and operate with most 60 and 72 cell PV modules. For more information, please see the
Technical Data page (p.18) of this manual, or sign in APsystems website to obtain a solar panel
list which can match with APsystems Microinverters:www.APsystems.com
Model Number
AC grid
PV Module
Module Connector
YC600
50Hz/230V
60,72 Cell
MC-4 Type or Customize

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4.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! An 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
(5mA-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.
①Perform all electrical installations in accordance with localelectrical codes.
②Be aware that only qualified professionals should install and/or replace APsystems
Microinverters.
③Before installing or using an APsystems Microinverter, please read all instructions
and warnings in the technical documents and on the APsystems Microinverter
system itself as well as on the PV array.
④Be aware that installation of this equipment includes the risk of electric shock.
⑤Do 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.
4.1 Additional Installation components from APsystems
Bus Cable End Cap (sold separately)
Bus Cable T-CONN Cap (sold separately)
Bus Cable Unlock Tool (sold separately)
4.2 Required Parts and Tools from you
In addition to your PV array and its associated hardware, you will need the following items:
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

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4.APsystems Microinverter System Installation
4.3 Installation Procedures
4.3.1 Step 1 - Verify the grid voltage to match with microinverter rating
4.3.2 Step 2 - The AC bus distribution
a. The AC bus is arranged at the proper position of the inverter.
b. One end of the AC bus access junction box into power grid.
c. Wire the conductors of the AC bus: L - BROWN; N - BLUE; PE - YELLOW GREEN.
Wiring colour code can be different according local regulation, check all the wires of the
installation before connecting to the AC bus to be sure they match.Wrong cabling can
damage irreparably the microinverters, such an issue is not covered by the warranty.
4.3.3 Step 3 - Attach 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 2
Option 2:
Figure 3
Prior to installing any of the microinverters, verify that the utility voltage at the point
of common connection matches the voltage rating on microinverter label.
Do not place the inverters (including DC and AC connectors) Where exposed to the sun,
rain or snow, even gap between modules. Allow a minimum of 3/4’’(1.5cm.) between the
roof and the bottom of the Microinverter to allow proper air flow.
143mm
M8
M8

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4.Installation Procedures
4.3.4 Stpe 4 - Connect the APsystems microinverter to AC bus cable
Push the microinverter AC connector to the trunk cable‘ connector. Listen for the "Click".
Figure 4
Best Practice: Use the Bus Cable Unlock Tool of AC Bus to split the connectors.
Figure 5
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 connector of the Microinverter into the AC bus
c. Install a AC bus protective end cap on the open AC connector of the last Microinverter in
the AC branch circuit.
AC connector interface as follows.
Figure 6
Cover any unused connectors with Bus Cable T-CONN Cap to protect the connectors.
Figure 7
L
PE
N
Click

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4.Installation Procedures
4.3.5 Step 5 - Install a Bus Cable End Cap at the end of AC bus cable
a. Strip cable jacket. c. Insert the wires into the cable clamps.
b. Insert the cable end into the seal. d. Rotate the nut with 3.3N·m until the
latching mechanism meets the base.
Figure 8
4.3.6 Step 6 - Connect APsystems Microinverters to the PV Modules
Figure 9
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.
Double check to make sure all of the AC and DC wiring has been correctly installed.
Ensure that none of the AC and/or DC wires are pinched or damaged. Make sure that
all of the junction boxes are properly closed.
About A and B Sides corresponding the location of modules, EMA registration show
acquiesce in this installation. if there are different connection methods, please email
the detail installation drawings to us to register, or the A, B Sides corresponding
component location will not correspond to the EMA position.
Nut
Seal
Body

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4.Installation Procedures
4.3.7 Step 7 - Complete 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.
b. Peel labels off, affix one to the respective location on the APsystems installation
map,and fill in 1,2 in the label below,according to the layout on the roof.
c. The other one serial number label, posted on the solar module frame is easy to view the
position.
d. After the completion of installation drawings sent to APsystems website
www.APsystems.com.
Figure 10
Figure 11

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4.Installation Procedures
Figure 12
①. The layout of the inverters' serial numbers on the warranty card is only suitable for
general arrangement.
②. Warranty card is located in Appendix last page of this manual.
③. You can use Scanning Gun or mobile phone to scan the serial numbers on the map
when set ECU (see ECU manual).
④. Using apsystems' mobile app ArrayApp can make the installation and
registion much more simple.
1 2 34 5 6 7 8910 11 12 13 14 15 1716 18 19 20 2221
APsystems Microinverter&Energy Communication Unit
Warranty Card
The APsystems Installation Map is adiagram ofthe physical location of each microinverter in your PV installation.
Each APsystemsmicroinverter has aremovable serialnumber labellocated on the mounting plate. Pee lthe label
and affix it to the respective location on the APsystems installation map.
Installation Map Template
To register yourAPsystems microinverter, please mail this warrantyregistration card to: emasupport@altenergy-power com.
B A B A B A

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5.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 two-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 to send performance data to the ECU. The time
required for all the Microinverters in thesystem 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.

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6.Troubleshooting
Qualified personnel can use the following troubleshooting steps if the PV system does not
operate correctly:
6.1 Status Indications and Error Reporting
6.1.1 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.
6.1.2 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
Steady Red - Electrode assembly ground fault protection
6.1.3 GFDI Error
A solid red LED indicates the Microinverter has detected a Ground Fault Detector
Interrupter (GFDI) error in the PV system. Unless the GFDI error has been cleared, the
LED will remain red and the ECU will keep reporting the fault.
After the ground fault error is fixed, follow the instructions in the ECU Installation and
Operation Manual to clear this GFDI error reporting.
6.1.4 Other Faults
All other faults are reported to the ECU. Refer to the ECU Installation and Operation
Manual for a list of additional faults and trouble shooting procedures.
Only qualified personnel should directly handle the APsystems microinverter.
①. Never disconnect the DC wire connectors under load. Ensure that no current is
flowing in the DC wires prior to disconnecting. An opaque covering may be used to
cover the module prior to disconnecting the module.
②. Always disconnect AC power before disconnecting the PV module wires from the
APsystems microinverter.
③. 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.

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6.Troubleshooting
6.2 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 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. Diagnosing from the Microinverter: A red light:
a. A blinking red light means microinverter problem or AC connection problem.
b. A solid red light means ground fault detector interrupter error.
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 is 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 is energized by the utility 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 of this manual.
7. If the problem persists, please call APsystems Customer Support.
Do not attempt to repair the APsystems microinverter. If troubleshooting methods fail,
please return the microinverter to your distributor for replacement.
6.3 Maintenance
No need to Maintenance.

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7.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 theneighboring Microinverter to
complete the branch circuit connections.
D. Close the branch circuit breaker, and verify operation of the replacement Microinverter.

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8.Technical Data
①. Be sure to verify the voltage and current specifications of your PV module match
with those of the Microinverter. Please refer to the datasheet or usermanual which
can be download from APsystems website www.APsystems.com.
②. You must match the DC operating voltage range of the PV module with the
allowable input voltage range of the APsystems Microinverter.
③. The maximum open circuit voltage of the PV module must not exceed the specified
maximum input voltage of the APsystems

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8.1 YC600 Microinverter Datasheet
Region
Australia
New Zealand
Model
YC600
Input Data (DC)
MPPT Voltage Range
22V-45V
Operation Voltage Range
16V-55V
Maximum Input Voltage
55V
Startup Voltage
20V
Maximum Input Current
12A×2
Output Data (AC)
Maximum Continuous Output Power
550VA
Peak Output Power
600VA
Nominal Output Voltage
230V/240V
Nominal Output Current
2.39A
Adjustable Output Voltage Range
149V-278V
Nominal Output Frequency
50Hz
Adjustable Output Frequency Range
45.1Hz-54.9Hz
Power Factor (Adjustable)
0.7 leading...0.7 lagging
Total Harmonic Distortion
<3%
Efficiency
Peak Efficiency
95.5%
Nominal MPPT Efficiency
99.5%
Night Power Consumption
20mW
Mechanical Data
Operating Ambient Temperature Range
-40°C to +65°C
Storage Temperature Range
-40°C to +85°C
Dimensions (W x H x D)
260mm ×188mm ×31.5mm
Weight
3.25kg
AC BUS Maximum Current
20A
Enclosure Rating
IP67
Overvoltage Category
III
Pollution Degree(PD)
PD3
Cooling
Natural Convection - No Fans
Features & Compliance
Island Detection Method
Frequency Shifting
RJ45
Standard
Communication
Wireless (Zigbee)
Transformer Design
High Frequency Transformers, Galvanically Isolated
Monitoring
Via EMA*Software
© All Rights Reserved
*Energy Management Ana lysis
Specifications subject to change without notice.
2017.03.29 REV1.0