Installation/User Manual

Installation/User Manual
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: [email protected]
WEB: www.APsystems.com
© All Rights Reserved
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.
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.
Specifications subject to change without notice - please ensure you are using the
most recent update found at www.APsystems.com.
WARNING: This indicates a situation where failure to follow instructions may
cause a serious hardware failure or personnel danger if not applied appropriately.
Use extreme caution when 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 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
PV – a
rray.
✔✔ 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.
APsystems YC500i Installation/User Manual
1
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.
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 modifications not expressly approved by the party
responsible for compliance may void the user’s authority to operate the
equipment.
APsystems YC500i Installation/User Manual
2
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 Analysis
web-based
• APsystems
Energy
Monitor
and Analysis
(EMA)(EMA)
web-based
monitoring and analysis
monitoring
and
analysis
system
system
Figure 1
This integrated system improves safety; maximizes solar energy harvest;
increases system reliability, and simplifies solar system design, installation,
maintenance, and management.
APsystems YC500i Installation/User Manual
3
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
4
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.#
PER BRANCH
MODULE CONNECTOR
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
5
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 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 qualified 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 YC500i Installation/User Manual
6
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 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.
APsystems YC500i Installation/User Manual
7
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. 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 – A
ttach the APsystems microinverters to the
racking
orPsystems the PV module
frame to the racking or the PV module frame Step 3 -­‐‑ Attach the A
microinverters Attach to the racking
Attach to the racking a) Mark the location of the microinverter on the rack, with respect
a) Mark f the microinverter on the rack, with respect to the PV module junction box or to thethe PVlocation moduleojunction
box or any other
obstructions.
any other obstructions. b) Mount one microinverter at each of these locations using
b) Mount one microinverter at each of these locations using hardware recommended by your module
hardware recommended by your module racking vendor.
racking vendor. Figure 3
Figure 4
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.
APsystems YC500i Installation/User Manual
8
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. Allow a minimum of 3/4’’ (1.5cm.) between the roof and the bottom of the microinverter to allow proper air flow. Step -­‐ C–onnect the A
Psystems microinverter to AC bus able bus
Step4 4
C
onnect
the
APsystems
microinverter
tocAC
cable
Figure 5
Best Practice: Use the AC Connector Unlock Tool to split the connectors. Best Practice: Use the AC Connector Unlock Tool to split the connectors.
Best Practice: Use the AC Connector Unlock Tool to split the connectors.
Best Practice: Use the AC Connector Unlock Tool to split the connectors. Figure 6
a) Check the microinverter technical
data page (page xx) for the maximum allo
a) Check the microinverter technical data page (page xx) for the maximum allowable number of
microinverters
on Technical
each ACData
branch
a) Check
the microinverter
page circuit.
(page 16) for
microinverters on each AC branch circuit.
the maximum allowable number of microinverters on each AC
b) Plug
the
AC
connector
of the microinverter
intocable.
the AC bus cable.
b) Plug
thecircuit.
AC connector
of the microinverter
into the AC bus
branch
a) Check
the
microinverter
for th
b)
Plug
the
connector
the microinverter
the
AC
c) anAC
AC
bus
end cap on
theinto
open
end
ofbus
the
ACend
bus cable.
c) Install
Install
an
ACprotective
busof protective
end
cap
on
the
open
of the AC bus cable.
microinverters on each AC branch circuit.
cable.
c) Install an AC bus protective end cap on the open end of the AC
Connector Interface the AC connector of the microinverter into the AC bus c
b) bus Plug
cable.
Connector Interface Connector
c) Install
Interface an AC bus protective end cap on the open end of the A
technical data page (page xx)
Connector Interface Figure 7
APsystems YC500i Installation/User Manual
9
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. Figure 8
WARNING: Do NDo
OT NOT
exceed maximum number of microinverters in an AC binranch circuit, as displayed on WARNING:
exceed
maximum
number
of microinverters
the echnical Data page (page xx) of this mthe
anual. anTAC
branch
circuit,
as displayed
on
Technical Data page (page
16) of this manual.
Step 5 -­‐‑ Install an AC bus protective end cap at the end of AC bus cable WARNING: Do NOT exceed maximum number of microinverters in an AC branch circuit, as displayed on Technical Data page (page xx) of this manual. the WARNING: Do NOT exceed maximum number of microinverters in an AC branch circuit, as displayed on Step 5 - I nstall an AC bus protective end cap at the end of
the Technical Data page (page xx) of this manual. AC bus cable
Step 5 -­‐‑ Install an AC bus protective end cap at the end of AC bus cable Figure 9
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 Step 6 -­‐‑ Connect APsystems Microinverters to the PV Modules Step 6 - C
onnect APsystems Microinverters to the
PV
Modules
Step 6 -­‐‑ Connect APsystems Microinverters to the PV Modules Figure 10
APsystems YC500i Installation/User Manual
10
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. Make sure that all of the junction
properly closed. boxes are properly closed.
Note: When plugging in the DC cables, the microinverter should immediately blink green three (3) This will happen as soon as the cables are plugged in and will indicate that the microinverter is func
NOTE: When plugging in the DC cables, the microinverter should
correctly. This entire check ill start nd end as
within 5 seconds of plugging in the unit, so p
immediately
blink
green
threefunction (3) times.wThis
willahappen
soon as
the
cables
are plugged
in and
will indicate
that
the microinverter
careful attention to these lights when first connecting the DC is
cables. 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 Stepa) 7 -Fill C
omplete
the APsystems
Installation
Mapprovide system information and the installa
in the APsystems Registration Cards, which map. Feel free to provide your oCards,
wn layout a larger system
or more intricate installation map is re
a) Fill
in the
APsystems
Registration
whichif provide
information
the
installation
Feelto free
to provide your
The layout and
map provided is dmap.
esigned accommodate labels in vertical or horizontal orient
own layout if a larger or more intricate installation map is
meet all the field PV connections. Each APsystems Microinverter has removable serial numb
required. The layout map provided is designed to accommodate
labels. eel labels off, affix oorientation
ne to the respective ocation labels
in P
vertical
or horizontal
to meet alllthe
field on the APsystems installation map
PV
EachbAPsystems
Microinverter
hasto removable
in connections.
A,B in the label elow (figure xx) according the layout on the roof (as figure XX). Then a
serial number labels. Peel labels off, affix one to the respective
another to the PV m
odule frame which is ein
asy to in
see. The warranty cards can be obtain
location
onlabel the APsystems
installation
map,
and fill
A,B
the
label
below (figure
according
to the layout
on thew
roof.
the appendix of this 11)
manual or APsystems website ww.APsystems.com 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
11
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. 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 YC500i Installation/User Manual
12
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. 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 fixed, 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 qualified 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 flowing 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 first AC connector of the first microinverter in a
branch circuit is suitable as a means of disconnection.
WARNING: The APsystems microinverter is powered by 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 flashes.
APsystems YC500i Installation/User Manual
13
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.Diagnosing from the microinverter: A red light – either blinking
or solid on the microinverter, or no light at all. No light, or a red light,
means it is definitely a microinverter related malfunction. A flashing
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 flashes.
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.
APsystems YC500i Installation/User Manual
14
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 flashing 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
15
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 Installation/User Manual
16
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
*The default AC output is 240V mode. Programmable to 208V mode.
**Programmable
per customer and utility requirements. All settings UL approved.
Specifications subject to change without notice – please
ensure you are using the most recent version found at
APsystems.com
600 Ericksen Ave NE, Suite 200, Seattle, WA 98110 | 844.666.7035 | APsystems.com
06.27.16 © All Rights Reserved
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
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