APsystems YC500i Series Instruction Manual

Installation/User Manual
APsystems YC500i
Photovoltaic Grid-connected Inverter
Version 1 7/16
© All Rights Reserved
APsystems
600 Ericksen Ave. NE Ste 200
Seattle, WA 98110
TEL: [phone] EMAIL: [email protected]
WEB: www.APsystems.com

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
iii
APsystems YC500i Installation/User Manual

APsystems YC500i Installation/User Manual 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.
SAVE THESE INSTRUCTIONS! This manual contains important instructions
for the YC500i that must be followed during Installation and maintenance of the
Photovoltaic Grid-connected Inverter.
Specications 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 performing this task.
NOTE: This indicates information that is important for optimized microinverter
operation. Follow these instructions closely.
SAFETY INSTRUCTIONS
✔Do NOT disconnect the PV module from the APsystems microinverter
without rst disconnecting the AC power.
✔Only qualied 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
PV – array.
✔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.
✔Do NOT attempt to repair the APsystems microinverter. If it fails, contact
APsystems Customer Support (844-666-7034) to obtain an RMA number and start
the replacement process. Damaging or opening the APsystems microinverter will
void the warranty.
1



APsystems YC500i Installation/User Manual 2
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.
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 technician for
help.
Changes or modications not expressly approved by the party
responsible for compliance may void the user’s authority to operate the
equipment.
RADIO INTERFERENCE STATEMENT

APsystems YC500i Installation/User Manual 3
The APsystems microinverter is used in utility-interactive grid-tied
applications, and is comprised of three key elements:
✹APsystems microinverter
✹APsystems Energy Communication Unit (ECU)
✹APsystems Energy Monitor and Analysis (EMA) web-based
monitoring and analysis system
This integrated system improves safety; maximizes solar energy harvest;
increases system reliability, and simplies solar system design, installation,
maintenance, and management.
APSYSTEMS YC500I SYSTEM INTRODUCTION
APsystemsYC500I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

APsystems YC500i Installation/User Manual 4
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. 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–array. 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 rating.
NOTE: The YC500i is “chassis grounded”, and the ground wire (PE)
is embedded in the AC Bus Cable, eliminating the need to install an
additional external copper grounding wire.
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 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 YC500i Installation/User Manual 5 5
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 MAX.# MODULE CONNECTOR
NUMBER PER BRANCH
YC500i 60Hz/240V 60,72 Cell 7 for 20A breaker MC-4 Type or Customize
YC500i 60Hz/208V 60,72 Cell 6 for 20A breaker MC-4 Type or Customize

APsystems YC500i Installation/User Manual 6
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 fed. Also, AC AFCIs have not been
evaluated for back feeding and may be damaged if back fed with the
output of a PV inverter.
WARNING: Perform all electrical installations in accordance with
local electrical codes.
WARNING: Only qualied professionals who have been trained by
Apsystems should install and/or replace APsystems microinverters.
WARNING: Before 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.
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.
NOTE: Strongly recommend you install surge protection devices in
the dedicated power distribution box.





APSYSTEMS MICROINVERTER SYSTEM INSTALLATION


APsystems YC500i Installation/User Manual 7
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
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 bus cable into the
junction box using an appropriate gland or strain relief
tting.
c) Wire the conductors: L1-BLACK; L2-RED; N-WHITE;
PE-GREEN
d) Connect the AC branch circuit junction box to the point
of utility interconnection.
Figure 2

APsystems YC500i Installation/User Manual 8
Step 3 – Attach the APsystems microinverters to the
racking or the PV module frame
Attach 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.
WARNING: 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.
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 proper air ow.


Figure 3
Figure 4
YC500IInstallationProcedures
Step1PositiontheACbuscable
Step2InstalltheACbranchcircuitjunctionbox



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buscableintothejunctionboxusinganappropriateglandorstrain
relieffitting.
c)Wiretheconductors:L1RED;L2BLACK;NWHITE;PEGREEN.
d)ConnecttheACbranchcircuitjunctionboxtothepointofutilityinterconnection.

Step3AttachtheAPsystemsmicroinverterstotherackingorthePVmoduleframe

Attach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.



 

APsystems YC500i Installation/User Manual 9
Step 4 – Connect the APsystems microinverter to AC bus
cable
Best Practice: Use the AC Connector Unlock Tool to split the connectors.
a) Check the microinverter Technical Data page (page 16) for
the maximum allowable number of microinverters on each AC
branch circuit.
b) Plug the AC connector of the microinverter into the AC bus
cable.
c) Install an AC bus protective end cap on the open end of the AC
bus cable.
Connector Interface
9
Figure 6
Figure 7
Figure 5
WARNING: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.

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properairflow.

Step4ConnecttheAPsystemsmicroinvertertoACbuscable



BestPractice:UsetheACConnectorUnlockTooltosplittheconnectors.



a)Check the microinverter technical data page (page xx) for the maximum allowable number of
microinverters on each AC branch circuit.
b)Plug the AC connector of the microinverter into the AC bus cable.
c)Install an AC bus protective end cap on the open end of the AC bus cable.
ConnectorInterface

 
WARNING: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.

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properairflow.

Step4ConnecttheAPsystemsmicroinvertertoACbuscable



BestPractice:UsetheACConnectorUnlockTooltosplittheconnectors.



a)Check the microinverter technical data page (page xx) for the maximum allowable number of
microinverters on each AC branch circuit.
b)Plug the AC connector of the microinverter into the AC bus cable.
c)Install an AC bus protective end cap on the open end of the AC bus cable.
ConnectorInterface

 
WARNING: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.

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properairflow.

Step4ConnecttheAPsystemsmicroinvertertoACbuscable



BestPractice:UsetheACConnectorUnlockTooltosplittheconnectors.



a)Check the microinverter technical data page (page xx) for the maximum allowable number of
microinverters on each AC branch circuit.
b)Plug the AC connector of the microinverter into the AC bus cable.
c)Install an AC bus protective end cap on the open end of the AC bus cable.
ConnectorInterface

 
L2
L1

APsystems YC500i Installation/User Manual 10
Cover any unused connectors with sealing caps to protect the connectors.
WARNING: Do NOT exceed maximum number of microinverters in
an AC branch circuit, as displayed on the Technical Data page (page
16) of this manual.
Step 5 - Install an AC bus protective end cap at the end of
AC bus cable
Step 6 - Connect APsystems Microinverters to the
PV Modules
1 0
Figure 9
Figure 10
Figure 8
Coveranyunusedconnectorswithsealingcapstoprotecttheconnectors.



WARNING:DoNOTexceedmaximumnumberofmicroinvertersinanACbranchcircuit,asdisplayedon
theTechnicalDatapage(pagexx)ofthismanual.

Step5InstallanACbusprotectiveendcapattheendofACbuscable



Step6ConnectAPsystemsMicroinverterstothePVModules


 
Coveranyunusedconnectorswithsealingcapstoprotecttheconnectors.



WARNING:DoNOTexceedmaximumnumberofmicroinvertersinanACbranchcircuit,asdisplayedon
theTechnicalDatapage(pagexx)ofthismanual.

Step5InstallanACbusprotectiveendcapattheendofACbuscable



Step6ConnectAPsystemsMicroinverterstothePVModules


 
Coveranyunusedconnectorswithsealingcapstoprotecttheconnectors.



WARNING:DoNOTexceedmaximumnumberofmicroinvertersinanACbranchcircuit,asdisplayedon
theTechnicalDatapage(pagexx)ofthismanual.

Step5InstallanACbusprotectiveendcapattheendofACbuscable



Step6ConnectAPsystemsMicroinverterstothePVModules


 


APsystems YC500i Installation/User Manual 11 1 1
WARNING: 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.
NOTE: When plugging in the DC cables, the microinverter should
immediately blink green three (3) times. This will happen as soon as
the cables are plugged in and will indicate 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 rst connecting the DC cables.
Step 7 - Complete the APsystems Installation Map
a) 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 accommodate
labels in vertical or horizontal orientation to meet all the eld
PV connections. Each APsystems Microinverter has removable
serial number labels. Peel labels off, afx one to the respective
location on the APsystems installation map, and ll in A,B in
the label below (gure 11) according to the layout on the roof.
Then afx another label to the PV module frame which is easy
to see. The warranty cards can be obtain from the appendix of
this manual or APsystems website www.APsystems.com


WARNING: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.

Note:WhenpluggingintheDCcables,themicroinvertershouldimmediatelyblinkgreenthree(3)times.
Thiswillhappenassoonasthecablesarepluggedinandwillindicate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firstconnectingtheDCcables.


Step7CompletetheAPsystemsInstallationMap

a)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accommodatelabelsinverticalorhorizontalorientationto
meetallthefieldPVconnections.EachAPsystemsMicroinverterhasremovableserialnumber
labels.Peellabelsoff,affixonetotherespectivelocationontheAPsystemsinstallationmap,andfill
inA,Binthelabelbelow(figurexx)accordingtothelayoutontheroof(asfigureXX).Thenaffix
anotherlabeltothePVmoduleframewhichiseasytosee.Thewarrantycardscanbeobtainfrom
theappendixofthismanualorAPsystemswebsitewww.APsystems.com




 
Figure 11

APsystems YC500i Installation/User Manual 12 1 2
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 ve-minute safety
related delay. The units should start blinking green every two
(2) seconds, ve (5) 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.
3. Plug in the ECU and follow the instructions according to the
instructions in the ECU Installation and Operation Manual.
4. The APsystems microinverters will start 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 0.1A 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.
The inverters will energize following the 300 second safety period.
APSYSTEMS MICROINVERTER SYSTEM OPERATING INSTRUCTIONS


APsystems YC500i Installation/User Manual 13 1 3
Status Indications and Error Reporting
Start up LED
One (1) quick red light followed by three (3) short green blinks when DC power is
rst 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 60 minute period
Flashing Red - Not producing power
Steady Red - Electrode assembly ground fault protection
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 xed, follow the instructions in the ECU Installation and Operation
Manual to clear this GFDI error reporting.
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.
WARNING: Only qualied professionals who have been trained by Apsystems
should install and/or replace APsystems microinverters.
WARNING: Never disconnect the DC wire connectors under load. Ensure that no
current is owing in the DC wires prior to disconnecting. An 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 rst AC connector of the rst microinverter in a
branch circuit is suitable as a means of disconnection.
WARNING: The APsystems microinverter is powered by the PV module DC power.
AFTER disconnecting the DC power, when reconnecting the PV modules to the
microinverter, be sure to watch for the three (3) short green LED ashes.
TROUBLESHOOTING





APsystems YC500i Installation/User Manual 14 1 4
There are two possible overall areas of trouble:
A. The microinverter may be malfunctioning.
B. The microinverter is working ne 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 – either blinking
or solid on the microinverter, or no light at all. No light, or a red light,
means it is denitely a microinverter related malfunction. A ashing
red LED – also check to make sure that AC power is reaching the
inverter.
2. Diagnosing from the ECU:
a. “No Data” Display: This is probably a communication issue, not a
microinverter malfunction.
b. Problems with an erratic display: Data is displayed for
some period and then no data is displayed. This is 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: This is 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 (page16) 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 (3) short
green LED ashes.
3. Check the AC branch circuit interconnection between all of the
microinverters. Verify that each inverter is energized by the utility
grid as described in the previous step.
4. Make sure that all AC breakers 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 section (page 16) of this manual.
7. If the problem persists, call APsystems Customer Support.
WARNING: Do not attempt to repair the APsystems microinverter. If
troubleshooting methods fail, following the documented RMA procedures, return the
microinverter to your distributor for replacement.
TROUBLESHOOTING A NON-OPERATING APSYSTEMS MICROINVERTER


APsystems YC500i Installation/User Manual 15 1 5
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.
Remember to observe the ashing LED light as soon as
the new microinverter is plugged into the DC cables.
C. Close the branch circuit breaker, and verify operation of
the replacement microinverter.

APsystems YC500i Installation/User Manual 16 1 6
WARNING: Be sure to verify the voltage and current specications of
your PV module match with those of the Microinverter. Refer to the
APsystems YC500i datasheet for Input specications.
TECHNICAL DATA



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 specied 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 54.8A
Maximum Output Fault Current (RMS) 2.79A 4.85A
Maximum Output Fault Current Duration 1.875ms 1.639ms
Reactive Current 0.1A
Extended Output Voltage Range 181V-298V
Nominal Output Frequency 60Hz
Default Output Frequency Range 59.3Hz-60.5Hz**
Extended Output Frequency Range 55.1Hz -64.9Hz
Total Harmonic Distortion <3%
Maximum Units Per Branch 6 for 20A Breaker 7 for 20A Breaker
EFFICIENCY
Peak Efficiency 95.5%
CEC Weighted Efficiency 95%
Nominal MPPT Efficiency 99.5%
Night Power Consumption 120mW
MECHANICAL DATA
Operating Ambient Temperature Range -40°F to +149°F (-40°C to +65°C)
Storage Temperature Range -40°F to +185°F (-40°C to +85°C)
Dimensions (WxHxD) inches 8.75” x 6.5” x 1.1”
Dimensions (WxHxD) mm 221mm x 167mm x 29mm
Weight 5.5 lbs (2.5kg)
AC Bus (trunk cable) 12AWG
Enclosure Rating NEMA 6
Cooling Natural Convection - No Fans
FEATURES & COMPLIANCE
Communication (Inverter to ECU) Power line Communication
Emissions & Immunity (EMC) Compliance FCC PART 15, ANSI C63.4, ICES-003
Safety Class Compliance UL1741 CSA C22.2 No.107.1-01
Grid Connection Compliance IEEE 1547
Monitoring Via EMA Software
07.19.16 © All Rights Reserved
Specifications subject to change without notice – please
ensure you are using the most recent version found at
APsystems.com
* The default AC output is 240V mode. Programmable to 208V mode.
**Programmable per customer and utility requirements. All settings UL approved.
600 Ericksen Ave NE, Suite 200, Seale, WA 98110 | 844.666.7035 | APsystems.com

APsystems YC500i Installation/User Manual 18
WiringDiagram
YC500ISampleWiringDiagram–120V/240VSplitPhase


Figure 12
YC500i Sample Wiring Diagram – 120V/240V Split Phase
20