YASKAWA SOLECTRIA XGI 1500-DCG Series Operating instructions

Utility Scale 1500VDC String Inverter
SOLECTRIA
®
XGI 1500-DCG
Installation and Operation Guide
Models: XGI 1500-250/250-600-DCG
XGI 1500-225-600-DCG
XGI 1500-200/200-480-DCG
XGI 1500-175-480-DCG
Note: These XGI 1500 inverter models require a DC negative ground
and will prevent Potential Induced Degradation (PID) in PV modules
that are susceptible to this effect.

Installation and Operation Guide SOLECTRIA
®
XGI 1500 DCG Series Inverters
DOCR-071081-B 2 of 74
Table of Contents
IMPORTANT SAFETY INSTRUCTIONS .................................................................................................... 4
Hazard Symbols .................................................................................................................................. 4
Symbols on Labels .............................................................................................................................. 4
General Safety Messages ................................................................................................................... 5
Status Panel........................................................................................................................................ 6
Overview .................................................................................................................................................... 7
Inverter Overview ................................................................................................................................ 7
Inverter Placement ............................................................................................................................ 10
Unpacking ......................................................................................................................................... 11
Installation ................................................................................................................................................ 11
Installation Procedure........................................................................................................................ 11
Inverter Dimensions, Spacing and Mounting ..................................................................................... 12
Wiring................................................................................................................................................ 16
Transformer Configuration................................................................................................................. 19
Equipment Grounding........................................................................................................................ 20
AC Connections ................................................................................................................................ 22
AC Breaker Specifications................................................................................................................. 24
DC Connections ................................................................................................................................ 25
DC Connection Using an XGI 1500 Remote Combiner ..................................................................... 26
Conduit Sealing ................................................................................................................................. 27
Antenna Mounting ............................................................................................................................. 28
Replace Wiring Box Cover ................................................................................................................ 28
Startup and Verification Test .................................................................................................................... 29
Startup Checklist ............................................................................................................................... 29
Startup Steps..................................................................................................................................... 29
Commissioning Test.......................................................................................................................... 30
Communication Installation and User Interface......................................................................................... 31
Connection to the Internet ................................................................................................................. 31
Communication Conductors .............................................................................................................. 31
Connecting Multiple Inverters ............................................................................................................ 31
XGI Gateway Inverters Firewall ......................................................................................................... 34
Networking with Other Devices.......................................................................................................... 34

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XGI 1500 DCG Series Inverters
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Monitoring Compatibility .................................................................................................................... 35
Third-Party Data Acquisition System (DAS) Connection.................................................................... 35
Static IP Configuration, Gateway Inverter.......................................................................................... 36
Port Forwarding................................................................................................................................. 36
Static Routing.................................................................................................................................... 38
Manage Cluster IP Address............................................................................................................... 39
Communication and I/O Ports............................................................................................................ 40
Graphical User Interface........................................................................................................................... 41
XGI Terminology ............................................................................................................................... 41
Graphical User Interface (GUI) Overview .......................................................................................... 41
Menu Structure.................................................................................................................................. 47
Firmware Updates .................................................................................................................................... 48
Automatic Remote Firmware Updates ............................................................................................... 48
Manual Firmware Updates, Locally.................................................................................................... 48
Manual Firmware Updates, Remote Server....................................................................................... 48
Manual Firmware Updates, Remote Access Portal............................................................................ 48
Communication Commissioning ............................................................................................................... 50
Communication Commissioning Checklist ......................................................................................... 50
Maintenance and Troubleshooting............................................................................................................ 51
Event Codes...................................................................................................................................... 51
Regular Preventative Maintenance.................................................................................................... 56
Specifications........................................................................................................................................ 60
General Specifications....................................................................................................................... 60
Measurement Accuracy..................................................................................................................... 61
Enclosure .......................................................................................................................................... 61
Voltage and Frequency Limits and Trip Times................................................................................... 61
mperature and Altitude..................................................................................................................... 63
P-Q Curves ....................................................................................................................................... 65
Options ................................................................................................................................................. 71
Appendix............................................................................................................................................... 71
Warranty and RMA Instructions......................................................................................................... 71
Yaskawa Solectria Solar Contact Information.................................................................................... 71
12.3 External Transformer Specification Guide…………………………………………………………………..72

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®
XGI 1500 DCG Series Inverters
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IMPORTANT SAFETY INSTRUCTIONS
Hazard Symbols
Table 1-1 Hazard Symbols
DANGER indicates a hazardous situation, which, if not avoided, will result in serious
injury or death.
WARNING indicates a hazardous situation, which, if not avoided, could result in serious
injury or death.
CAUTION indicates a hazardous situation, which, if not avoided, will result in minor or
moderate injury.
NOTICE indicates a hazardous condition, which, if not avoided, could result in equipment
working abnormally or property loss.
INFO indicates important supplementary information to use the product effectively.
Symbols on Labels
Table 1-2 Explanation of Symbols
AC Signal
DC Signal
Equipment Ground
AC Power Phase
Off
On
Refer to Operating Instructions
Caution: Risk of Electric Shock
Caution: Risk of Electric Shock
Timed Discharge

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®
XGI 1500 DCG Series Inverters
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General Safety Messages
Electric Shock Hazard
Components with hazardous voltage and energy will electrocute operator. Operator shall
avoid touching live components with hazardous voltage and energy.
Unqualified Operator Hazard
Operator may cause a hazardous situation by making incorrect installation or wiring
connections. A qualified technician shall do all installation and wiring connections to
comply with all local, national, or country specific guidelines for safety.
Electrical Shock Hazard
Operator may contact components with hazardous voltage and energy. Use proper safety
equipment including Personal Protective Equipment (PPE) when de-energizing the unit.
De-energize the unit, wait 5 minutes, and verify the absence of voltage before opening the
equipment or removing any protective shields.
General Damage to Equipment
Attempting to service the inverter improperly may result in damage. Contact Yaskawa
Solectria Solar Technical Support for maintenance.
Read and Follow Instructions
Failure to read and follow instructions may void the warranty. Install the inverter according
to the instructions in this manual.
SAVE THESE INSTRUCTIONS
This manual contains instructions for these models:
XGI 1500-250/250-600-DCG
XGI 1500-225-600-DCG
XGI 1500-200/200-480-DCG
XGI 1500-175-480-DCG

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®
XGI 1500 DCG Series Inverters
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Status Panel
The status panel consists of five LEDs that provide useful information to the user regarding the function of the
inverter. LEDs are shown in Figure 1-1 and defined in Table 1-3.
Figure 1-1 Status Panel
Table 1-3 Explanation of Symbols on Status Panel
Ready (Yellow)
On: Inverter is initialized and ready to operate
Off: Inverter is not ready to operate
Network and Communication (Yellow)
On: Network and communication services are working properly
Off: Network and communication services are offline
Power (Yellow)
On: Inverter is generating AC power
Off: Inverter is not generating AC power
Maintenance (Yellow)
On: Inverter needs maintenance or service
Off: Inverter does not need maintenance or service
Ground Fault (Red)
On: Ground fault that needs service and may be a hazard
Off: There is no ground fault

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®
XGI 1500 DCG Series Inverters
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Overview
Inverter Overview
A solar inverter converts DC power from solar modules to AC power, and exports it to the electrical grid as
shown in Figure 2-1. The SOLECTRIA XGI 1500-DCG series are state-of-the-art inverters designed and made
in the USA using global components and are compliant with the Buy American Act.
Figure 2-1 Inverter Usage
2.1.1 Inverter Features
•High conversion efficiency using 3-level power conversion technology.
oMax efficiency: 99.0%
oCEC weighted average efficiency: 98.5%
•Grid adaptability
oSupports multiple grid standards
oCertified to UL 1741SB with IEEE 1547-2018, IEEE 1547.1 2020, and IEEE 1547a-2020
oAdjustable reactive power
oAdjustable power factor (PF) ±0.80
oRemote power curtailment
•Ethernet connectivity
•Wi-Fi accessible user interface
•Protective enclosure: NEMA 4X, Type 3R, IEC IP66 rated enclosure allows for outdoor use.
•Flexible design: The SOLECTRIA XGI 1500 DCG series inverters provide a flexible solution for both
distributed and centralized “virtual central” system architecture.
•PV Source Circuit Combiners: Pair the XGI 1500 DCG series inverter with one or two Solectria Remote
Combiners (CR1500-xxP-yyS-400 series, or CR1500-xxp-yyF-400S series with output fuse).
XGI
1500
-
250
-
DCG Series

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XGI 1500 DCG Series Inverters
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2.1.2 Inverter Protection Features
•Short-circuit protection
•Anti-islanding protection
•Input and output surge protection
•Input over-current protection
•Self-monitoring variables:
oAC output voltage and frequency
oLeakage current to ground
oDC injection in AC output
oInternal ambient temperature
oIGBT module temperature
2.1.3 Communication Overview
Users can communicate with the SOLECTRIA XGI 1500 DCG using a Wi-Fi-enabled smart device, such as a
laptop, tablet, or smartphone. The SOLECTRIA XGI 1500 DCG monitors internal variables that are sent via a
modem or gateway to the Internet cloud. In the cloud these data are stored on the SRV server where they can
be accessed by the end user (additional fee applies). Add-ons such as a weather station and a Data
Acquisition System (DAS) are supported using Ethernet cable.
Figure 2-2 Communications Overview
XGI 1500
DCG

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®
XGI 1500 DCG Series Inverters
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2.1.4 Inverter Features
Figure 2-3 SOLECTRIA XGI 1500 DCG Inverter Features
Front (Left), Right Side (Right), and Bottom (Bottom)
Power
Components
DC Disconnect
(Load Break)
User Wiring
Section
WiFi Antenna
DC Disconnect
(Load Break)
Status Panel
AC On/Off Switch
(Load Break)
Cooling
Fans
Mounting
Bracket
Mounting
Bracket
Conduit Entry
Area
Mounting Brackets

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®
XGI 1500 DCG Series Inverters
DOCR-071081-B 10 of 74
Inverter Placement
The SOLECTRIA XGI 1500 DCG inverter is rated for outdoor use and will operate when the connected solar
array provides sufficient voltage and power. To obtain the best performance and ensure longevity of the inverter,
it is recommended to mount the inverter out of the direct sunlight.
Inverter Facing Direction
It is recommended to install the inverter facing north to minimize direct sun exposure.
Figure 2-4 Inverter Environment (Left to Right) Direct Sunlight, Shaded, and Rain
Mount the inverter vertically and level to the ground. Do not install the inverter in a pitched/tilted/angled
orientation.
Figure 2-5 Inverter Mounted Correctly -- Vertical and Level to Ground

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XGI 1500 DCG Series Inverters
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Unpacking
When storing the packaged inverters, keep them in an area where they will not get damaged or flooded. Storage
temperatures should be maintained in the range -40°F to +167°F (-40°C to +75°C). Open the box carefully to
avoid damaging the contents.
Table 2-1 Contents of Box
1. Inverter (XGI 1500-250/250-600-DCG, XGI 1500-225-600-DCG, XGI 1500-200/200-480-DCG, or
XGI 1500-175-480-DCG)
2. Voltage-Frequency Test Report
3. One-page information sheet for Wi-Fi connection to a smart device
4. Hardware Kit containing:
a. Antenna for Wi-Fi connection to a smart device
b. 90-degree coaxial connection for the antenna
Installation
Installation Procedure
1. Remove the inverter from its crate and properly dispose of the packaging material.
2. Secure the inverter to the structure, carefully observing the lifting hazard notice below.
Lifting Heavy Object Hazard
Proper lifting technique must be used in order to avoid injuries.
Lift into place with at least two people or using a mechanical aid.
3. Turn OFF the upstream AC breaker and apply a lock.
4. Turn OFF the AC switch on the inverter. The AC switch actuates AC contactors (load-break rated).
5. Turn OFF the DC switch on the inverter. The DC switch is load-break rated.
6. Remove the wiring box cover.
7. Confirm that the PV Output Circuit conductors (from a PV Combiner) are de-energized.
8. Connect the AC wires from the grid to the AC terminal block in the wiring box.
9. Connect the PV Output Circuit wires (from one or two PV Combiners) to the DC terminals in the wiring
compartment.
10. Connect the communication wires.
11. Secure the inverter cover.
12. Connect the antenna to the inverter using the 90-degree coaxial connection.

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XGI 1500 DCG Series Inverters
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Inverter Dimensions, Spacing and Mounting
The dimensions of the XGI 1500 DCG inverter are shown in Figure 3-1.
Figure 3-1 Inverter Dimensions
Mount the inverter to 1
5
/
8
inch strut channel as shown in Figure 3-4. Ensure that the strut channel structure is
capable of supporting 290 lbs (132kg) plus an effective safety margin. Structural integrity of the strut structure is
the responsibility of the installer. Space the inverters no closer than shown in Figure 3-2 for thermal exhaust and
wiring clearance. Keep this area free from debris, vegetation, and other obstructions.
Figure 3-2 Inverter Minimum Spacing and Mounting – Top View
44.3 in
1125 mm
34.84 in
885 mm
29.5 in
750 mm

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XGI 1500 DCG Series Inverters
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Use Figure 3-3 to space strut channels for mounting. The holes on the bottom bracket use the center of the slot
as the reference point and the hook at the top bracket uses the top of the upper strut channel as its reference
point. Use two 8 mm (
5
/
16
in) stainless bolts (not provided) to connect the bottom brackets to the strut channel.
Figure 3-3 Mounting Brackets – Rear View
Centerline of Strut
Top of Strut

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XGI 1500 DCG Series Inverters
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Attach the inverter, with its mounting brackets firmly secured and in place, to the strut channel as shown in Figure
3-4 and Figure 3-5. The top inverter brackets fit over the upper strut bar to hang the inverter while securing the
upper and lower brackets to the strut channel. Note that the inverter’s brackets are secured to the inverter in the
factory.
Figure 3-4 Mounting the Inverter to the Strut Channels

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XGI 1500 DCG Series Inverters
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When positioned on the strut, the inverter and strut channels should appear as in Figure 3-5. To secure the
inverter in place, use two 8mm (
5
/
16
in) stainless bolts (not provided) through the holes provided in the top face
of the upper brackets, and two more through the front face of the lower brackets.
Figure 3-5 Inverter Mounted to Strut Channels, Back View (Upper Image) and Top View (Lower Image)
Lifting Heavy Object Hazard
Proper lifting technique must be used in order to avoid injuries.
Lifting requires at least two people or a mechanical hoist to install the Inverter.
C
L
C
L
Slotted Holes for 8mm stainless Bolts (not supplied)
27.8 in
706 mm

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®
XGI 1500 DCG Series Inverters
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Wiring
Turn the AC Switch to OFF before wiring. The AC switch actuates two load-break-rated AC contactors to open.
The AC switch is located on the right side of the inverter (Figure 2-3.)
Turn AC Switch on the inverter to OFF
Verify the absence of AC voltage
Wiring terminals are rated for both 75°C and 90°C rated conductors. Ensure that all connections comply with the
National Electrical Code ANSI/NFPA 70 (NEC) and local electrical codes. With longer wire runs, larger
conductors than are strictly required by the NEC are often used in order to reduce the voltage drop. See Section
0 for AC connection specifications and Section 0 for DC connection specifications.
Keep AC and DC wiring in separate conduits. All conduit must be rain-tight. Use wet location connectors that
comply with UL 514B to maintain the inverter enclosure’s NEMA 4X, Type 3R, IEC IP66 rating. Conduit holes or
other modifications to the enclosure are not permitted anywhere on the enclosure except in the designated
conduit entry area (see Figure 3-9).
3.3.1 Open Inverter Cover
Make sure the DC disconnect switch handle is in the OFF position. The DC disconnect switch is load-break
rated. Use a flat-head screwdriver to unfasten the five quarter-turn latches on the inverter’s front cover, as shown
in Figure 3-6. Lift the bottom of the hinged cover and swing it upward. Make sure that both cover support arms
are engaged, as in Figure 3-7.
Figure 3-6 Inverter Cover Latches (Quantity 5)
Figure 3-7 Inverter Cover Support Arms
Raise cover
and engage
support arms
Rotate fasteners
to release cover

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XGI 1500 DCG Series Inverters
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When opening the inverter cover, both cover support arms must be fully engaged to secure
the cover in the open position. An unsecured cover could swing down and injure nearby
personnel.
When replacing the cover, all 5 latches must be secured to maintain the enclosure rating.
This prevents water from entering the enclosure that could potentially damage the
equipment. Damage due to water intrusion is not covered under warranty.
With the cover opened and secured, the inverter is ready for wiring as shown in Figure 3-8.
Figure 3-8 Wiring Box Power Connections
AC Phase Connections
DC Positive Connections
DC Negative Connections
(Negative is connected to
ground in the factory for the
XGI 1500-DCG inverters)

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XGI 1500 DCG Series Inverters
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3.3.2 Bottom Conduit Entry
All conduit connections must be made in the designated area on the bottom side of the inverter. Be sure to
remove all metal shavings from the inverter after drilling a hole in order to prevent metal chips and other debris
from damaging the inverter.
Conduit entries into the inverter often allow the introduction of moisture and
condensation to form inside the inverter enclosure. Use an appropriately rated sealant for
all conduit entries to prevent moisture entry and condensation. Condensation inside the
inverter may cause irreparable damage and is not covered under warranty.
Figure 3-9 Conduit Entry Area
17.32 in. (440mm)
5.51 in. (140mm)
1.38 in. (35mm)
1.18 in.
(30mm)
Figure 3
-
9 Conduit entry area on the bottom
face
of the
inverter

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XGI 1500 DCG Series Inverters
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Transformer Configuration
Grid Mismatch
If the grid does not match the requirements, the inverter will not start and damage may
occur. Check with the local electric utility before selecting a grid standard.
The system must comply with the National Electrical Code ANSI/NFPA 70 and with all
local rules and safety regulations before the inverter can be operated.
Yaskawa Solectria Solar’s XGI 1500 DCG inverters require AC output connection to a wye-configured service
with a floating neutral (see Figure 3-10), or an ungrounded delta. The XGI inverter uses Neutral for AC voltage
sensing, when a Neutral is available. Acceptable service configurations are depicted in the figure below.
Figure 3-10 Permitted Transformer Configurations
Maximum Number of Inverters on a Transformer Winding
Connect no more than eight (8) XGI 1500-DCG inverters to the same winding of a
transformer. All other connections, such as for site loads (lighting, metering, etc), must
be galvanically isolated from the inverters. See the Appendix for the External
Transformer Specification Guide for the XGI 1500-DCG inverters.

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XGI 1500 DCG Series Inverters
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Improper Transformer Configuration
Inverter will not run and may have hazardous current. Connect transformer in specified
configurations only. Incorrect transformer configuration may cause damage to the inverter.
Figure 3
-
11
. No more than 8 XGI 1500-DCG inverters in parallel
connected to a single transformer, to ensure proper functioning of the
GFDI functionality.