APsystems YC600B User manual

APsystems YC600B Microinverter
(For LATAM)
APsystems Microinverter
Installation manual
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ALTENERGY POWER SYSTEM Inc.
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APsystems
APsystems Guadalajara:
AV. Lazaro Cardenas 2850-5º Piso, Colonia Jardines del Bosque
P. 44520, Guadalajara, Jalisco
TEL: 52 (33) -3188-4604 EMAIL: [e-mail]

APsystems YC600B Installation/User Manual
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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 YC600B 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 ................................... 9
4.3.4 Step 4 - Ground the systems ................................................................................................ 10
4.3.5 Step 5 - Connect the APsystems microinverter to AC bus cable ............................10
4.3.6 Step 6 - Install a Bus Cable End Cap at the end of AC bus cable ...........................11
4.3.7 Step 7 - Connect APsystems Microinverters to the PV Modules ............................. 11
4.3.8 Step 8 - 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 GFDI 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 YC600B Microinverter Datasheet .................................................................................................... 19
9. Wiring Diagram .......................................................................................................................21
9.1 Sample Wiring Diagram - Single Phase ......................................................................................... 21

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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.
Please install AC breakers on the AC side of the inverter.
CAUTION – Hot surfaces - To reduce the risk of burns - Do not touch. Risk of electric
shock-(a) both ac and dc voltage source are terminated inside this equipment. Each circuit
must be individually disconnected before servicing, and (b) When the photovoltaic array is
exposed to light, it supplies a dc voltage to this equipment. Warranty void if cover removed.
No user serviceable parts inside.Refer servicing to qualified service personnel. This inverter
has an integral ground-fault detector / interrupter (GFDI). This Utility-InteractiveInverter
contains active anti-islanding protection(IEEE1547) .

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1. Important Safety Instructions
1.2 Radio Interference Statement
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.
NOTICE, danger!This device directly connected with electricity generators
and public grid.
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, electrical 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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PV
Module
Junction Box
YC600B
Distribution box
ECU
Internet EMA
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

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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 produced 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 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 Type 6 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).
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 abroad band 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 YC600B Introduction
YC600B was designed to accommodate today’s high output PV panels, offer enhanced
capability and meet the latest grid compliance standards. Offering an unprecedented 375VA
peak output power per channel, the YC600B works with 60 and 72-cell PV modules and
offers dual, independent MPPT per panel. The YC600B also operates within a wider MPPT
voltage range than competing brands for a greater energy harvest.
Key Product Features:
Dual-module microinverter with independent MPPT per panel
750VA maximum output power
Accommodates 60 & 72-cell PV modules up to 550W+
Connect to 120V or 127V grid
Stable wireless communication

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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 local electrical 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 Y-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

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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.
Do NOT carry the microinverter by the AC cable. This may cause the AC cable to
partially or fully disconnect from the unit, resulting in no or poor operation.
4.3.3 Step 3 - Attach the APsystems Microinverters to the racking
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.When install microinverter, grounding washer must be
facing the racking.
Figure 2
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.The
racking of install microinverter must be reliably grounding.
grounding washer
(Warning injure hand)

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4. APsystems Microinverter System Installation
4.3.4 Step 4 - Ground the systems
a. There already has earth wire inside the AC cable, thus the grounding work could be
done directly by it.
b. For those areas that have special requirements, the external grounding work could
be done by grounding brackets.
Figure 3
4.3.5 Step 5 - Connect the APsystems microinverter to AC bus cable
Push the microinverter AC connector into the trunk cable connector until you hear a "click".
Try to remove it to check that it is properly locked.
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
AC connector interface as follows.
Figure 6
Cover any unused connectors with Bus Cable Y-CONN to protect the connectors.
Figure 7
Click
grounding brackets

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4. APsystems Microinverter System Installation
4.3.6 Step 6 - 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
4.3.7 Step 7 - 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.
Nut
Seal
Body

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4. APsystems Microinverter System Installation
4.3.8 Step 8 - 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.
Figure 10
Figure 11

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4. APsystems Microinverter System Installation
APsystems Microinverter & Energy Communication Unit Warranty Card
The APsystems Installation Map is a diagram of the physicallocation of each microinverter in
your PV installation.Each APsystems microinverter has a removable serialnumber
labellocated on the mountingplate. Peel the label and affix it to the respective location on the
APsystems installation map.
Installation Map Template
Figure 12
1The layout of the inverters' serial numbers on the warranty card is only suitable
for general arrangement.
2Installation card is located in Appendix last page of this manual.
3You can use Scanning Gun or mobile phone to scan the serial numbers on the
map when set ECU (see ECU manual).
1 2 34 5 6 7 89 1 0 11 12 13 14 15 1716 18 19 20 2221
APsystems Microinverter&Energy Communication Unit
Warranty Card
The APsystems Installation Map is 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. Pee l the label
and affix it to the respective location on the APsystems installation map.
Installation Map Template
To register your APsystems microinverter, please mail this warranty registration 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 , setup 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 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.

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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 troubleshooting procedures.
Only qualified personnel should directly handle the APsystems Microinverter.
1Never disconnect the DC wire connectors under load. Ensure that no current is
flowing in the DC wires prior to disconnecting.
2Always disconnect AC power before disconnecting the PV module wires from the
APsystems Microinverter.
3The APsystems Microinverter is powered by PV module DC power. AFTER
disconnecting the DC power, when reconnecting the PV modules to the
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 inverter AC connector from the AC Bus.
3. Disconnect the PV module DC wire connectors from the microinverter.
4. Remove the Microinverter from the PV array racking.
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 to the AC bus.
D. Close the branch circuit breaker, and verify operation of the replacement Microinverter.

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8. Technical Data
1Be 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.
2You must match the DC operating voltage range of the PV module with the
allowable input voltage range of the APsystems Microinverter.
3The 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 YC600B Microinverter Datasheet
Region
LATAM
Input Data (DC)
Recommended PV Module Power (STC) Range
300Wp-550Wp+
Peak Power Tracking Voltage
22-48V
Operation Voltage Range
16-60V
Maximum Input Voltage
60V
Maximum Input Current
12A x 2
Maximum Input Short Circuit Current
13.2A
Output Data (AC)
Maximum Output Power
750VA
Nominal Output Voltage/Range(1)
120V/95-155V
Adjustable Output Voltage Range
90-160V
Nominal Output Current
6.26A
Nominal Output Frequency/Range(1)
60Hz/57-62Hz
Adjustable Output Frequency Range
55.1-64.9Hz
Power Factor(Adjustable)
>0.99
Maximum Units per 12AWG Branch(2)
4
Efficiency
Peak Efficiency
96%
Nominal MPPT Efficiency
99.5%
Night Power Consumption
20mW
Mechanical Data
Operating Ambient Temperature Range (3)
-40 oF to +149 oF (-40 °C to +65 °C )
Storage Temperature Range
-40 oF to +185 oF (-40 °C to +85 °C )
Dimensions (W x H x D)
10.3” ×7.4” ×1.3” (260mm X 188mm X 31.5mm)
Weight
5.7lbs (2.6kg)
AC Bus Cable
12AWG (28A)
DC Connector Type
Stäubli MC4 PV-ADBP4-S2&ADSP4-S2
Enclosure Environmental Rating
Type 6
Cooling
Natural Convection - No Fans
Overvoltage Category
OVC II For PV Input Circuit, OVC III For Mains Circuit
Utility Interconnection Voltage And Frequency
Trip Limits And Trip Times
See NOTE 1 Below
Trip Limit And Trip
Time Accuracy
Voltage
+/-2V
Frequency
+/-0.1Hz
Alternate Trip times
See NOTE 1 Below
Features
Communication (Inverter To ECU)(4)
Wireless
Transformer Design
High Frequency Transformers, Galvanically Isolated
Monitoring
Energy Management Analysis (EMA) system
Warranty(5)
10 Years Standard
Certificate&Compliance
Compliance
UL1741 (IEEE1547); CSA C22.2 No. 107.1; NOM-001;
ABNT NBR 16149:2013; ABNT NBR 16150:2013;
ABNT NBR IEC 62116: 2012