YASKAWA Solectria PVI 25TL-480-R Operating instructions

Commercial 1000VDC String Inverter
Solectria PVI 25TL-480-R
Installation and Operation Guide
Model: PVI 25TL-480-R

Installation and Operation Guide SOLECTRIA PVI 25TL-480-R
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1. Important Safety Instructions .........................................................................................................................................4
1.1 Hazard Symbols.......................................................................................................................................................4
1.2 Symbols on Labels...................................................................................................................................................5
1.3 General Safety Messages ........................................................................................................................................ 6
1.4 Status Panel.............................................................................................................................................................8
2. Overview .........................................................................................................................................................................9
2.1 Intended Use........................................................................................................................................................... 9
2.2 Inverter Features...................................................................................................................................................10
2.3 Inverter Protections ..............................................................................................................................................10
2.4 Communication Overview.....................................................................................................................................11
2.5 Inverter Diagrams .................................................................................................................................................11
2.6 Schematic Diagram and Circuit Design ................................................................................................................. 13
2.7 Labels ....................................................................................................................................................................13
2.8 Unpacking .............................................................................................................................................................14
3. Installation ....................................................................................................................................................................16
3.1 Installation Sequence Overview............................................................................................................................18
3.2 Mechanical Installation......................................................................................................................................... 18
3.3 Wire-Box ...............................................................................................................................................................28
3.4 Electrical Installation DC ....................................................................................................................................... 29
3.5 Electrical Installation AC........................................................................................................................................35
3.6 Communication Installation.................................................................................................................................. 41
3.7 Resealing the Wiring Box ...................................................................................................................................... 47
4. Startup...........................................................................................................................................................................47
4.1 Startup Checklist ................................................................................................................................................... 47
4.2 Startup Steps......................................................................................................................................................... 48
4.3 Connection to the Inverter –Wireless Option......................................................................................................48
5. App Interface ................................................................................................................................................................51
5.1 Overview ...............................................................................................................................................................51
5.2 Main Menu............................................................................................................................................................51
6. Fault Shutdown and Troubleshooting...........................................................................................................................76
6.1 LED Status Panel.................................................................................................................................................... 76
6.2 Fault and Troubleshooting .................................................................................................................................... 77

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7. Maintenance and Decommissioning of Inverters.........................................................................................................84
7.1 Product Maintenance ...........................................................................................................................................84
7.2 Uninstall the Inverter ............................................................................................................................................89
8. Accessories....................................................................................................................................................................89
8.1 Roof Racking and Shade Cover Kit (OPT-ROOFKIT-PVI-25TL) ...............................................................................90
9. Technical Data...............................................................................................................................................................93
9.1 Datasheet.............................................................................................................................................................. 93
9.2 Measurement Tolerances ..................................................................................................................................... 96
9.3 Production Graphs ................................................................................................................................................ 96
10. Appendix .....................................................................................................................................................................101
10.1 Warranty and RMA Instructions .........................................................................................................................101
10.2 Datasheet............................................................................................................................................................101
2.1 Contact Information............................................................................................................................................101

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1. Important Safety Instructions
1.1 Hazard Symbols
DANGER
Indicates a hazardous situation, which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation, which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation, which, if not avoided, could result in minor or moderate injury.
NOTICE!
Indicates a hazardous condition, which, if not avoided, could result in property damage.
INFO ✔
Indicates important supplementary information to use the product effectively.

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1.2 Symbols on Labels
Table 1-1 Explanation of Symbols on Labels
SYMBOL
DESCRIPTION
DC Signal
AC Signal
Equipment Ground
Phase
Off
On
Refer to Operating Instructions
Caution: Risk of Electric Shock
Do not remove cover until 5 minutes after disconnecting all supply sources
Caution: Risk of Electric Shock
Timed Discharge
Caution: Hot Surface
Do Not Touch
Warning: Hazardous voltage area under plastic cover. Do not open fuse holders under load.
Proper PPE must be used while accessing fuses. For continued protection against risk of fire,
replace only with same make and type of fuse.
Information: For more information, please see the installation and operations manual

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1.3 General Safety Messages
DANGER
Electric Shock Hazard: Components with hazardous voltage and energy will electrocute operator. Operator shall avoid
touching live components with hazardous voltage and energy.
WARNING
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, and
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.
Heavy Lifting Hazard: Solectria PVI 25TL-480-R inverters weigh ~22 kg (48.5 lbs). The wire-box weighs ~6 kg (13.2 lbs).
Ensure the mounting bracket is properly installed prior to hanging the inverter and wire-box on the bracket. A team of
two is recommended to lift and place the inverter and wire-box into position.
Chemicals Hazard: This product can expose you to chemicals including lead, known to the State of California to cause
cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
NOTICE!
General Damage to Equipment: Attempting to service the inverter improperly may result in damage. Contact Yaskawa
Solectria Solar Technical Support for maintenance.
Use as Intended: Solectria PVI 25TL-480-R inverters are designed for PV grid-tied systems. The inverters are to be
installed with floating or ungrounded PV arrays only.
INFO ✔
Read and Follow Instructions: Failure to read and follow instructions may void the warranty. Install the inverter
according to the instructions in this manual.
Grid Standard: Please check with the local electric utility supply company before selecting a grid standard. If the inverter
is operated with an incorrect grid standard, the electric utility supply company may cancel the interconnection
agreement. Placing the inverter into operation before the overall system complies with the national codes, rules and
safety regulations of the application is not permitted.

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SAVE THESE INSTRUCTIONS
This manual contains important instructions for model:
PVI 25TL-480-R

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1.4 Status Panel
The Status Panel consists of four LED icons that provide useful information to the user regarding the current state of the
inverter. The Status Panel is shown in Figure 1-1 and the icon symbols are defined in Table 1-2.
Figure 1-1 Status Panel
Table 1-2 LED Indication Meaning
LED LIGHT
DESCRIPTION
POWER
Working Power Indicator Light
On: AC Power is available
Off: AC Power is not available
FAULT
Fault Status Indicator Light
On: Permanent fault
Fast Flash: Fault (on 0.5 seconds, off 0.5 seconds)
Slow Flash: Warn (on 0.5 seconds, off 2 seconds)
Off: No detected fault or power supply is not working
AFCI
GFCI/AFCI Status Indicator Light
On: AFCI protection
Flash: GFCI fault (on 0.5 seconds, off 2 seconds)
Off: No GFCI/AFCI fault or power supply is not working
RSD
RSD Status Indicator Light
Green Light On: Power supply working and grid checked
Red Light On: Power supply working and grid not checked
Off: Rapid shutdown triggers, end of discharge, no AC power

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2. Overview
2.1 Intended Use
The SOLECTRIA PVI 25TL-480-R is a grid-tied, photovoltaic (PV), three-phase inverter, suitable for use in commercial or
utility-scale installations. The SOLECTRIA PVI 25TL-480-R is an integral part of a typical PV installation, which typically
includes PV modules, DC power distribution equipment, a PV inverter, and AC power distribution equipment. The
SOLECTRIA PVI 25TL-480-R converts solar power (DC) to 480VAC power suitable for use in buildings and back feeding
onto the electrical grid. This inverter is a grid following inverter, which means it synchronizes the output voltage with the
grid, as well as synchronizes the output current to the same frequency and phase as the AC grid. The SOLECTRIA PVI
25TL-480-R is an ideal product for use in rooftop, carport, or ground mount installations where quality and performance
are paramount.
The SOLECTRIA PVI 25TL-480-R is not intended for use in micro-grid or off-grid applications. Although successful
integration into AC-couple systems is possible, Yaskawa Solectria Solar does not support or provide guidance for use in
this type of application.
Figure 2-1 Inverter Usage

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2.2 Inverter Features
CONVERSION TECHNOLOGY
3 - Level
HIGH EFFICIENCY
Max 98.5%, CEC 98%
GRID ADAPTABILITY
Supports multiple grid trip setpoints
Pre-set grid setpoints: IEEE 1547, CA Rule 21, ISO-NE
Adjustable reactive power
Adjustable power factor (PF) ±0.8
Remote power curtailment
CONNECTIVITY
Modbus, SunSpec Modbus and XML
Ethernet Network Card (optional) allows for remote
firmware upgrades and advanced controls of the inverter
USER INTERFACE (UI)
Wi-Fi UI accessible with dongle and smart device
MULTICHANNEL MPPT CONFIGURATION
2 MPPT zones
PROTECTIVE ENCLOSURE
NEMA Type 4X
Corrosion resistant aluminum
Rated for indoor and outdoor use
EASY INTEGRATION
Integrated AC and DC switches
6 positive-fused string input positions
Accommodates wide range of AC/DC conductors
RAPID SHUTDOWN READY
Tigo transmitter installed in wire-box
2.3 Inverter Protections
DC POLARITY
Reverse polarity protection on DC inputs
SHORT CIRCUIT PROTECTION
AC and DC short circuit protection
ARC FAULT
DC series arc fault detection
ANTI-ISLANDING
Bidirectional frequency perturbation based on Sandia
Frequency Shift Detection
OVER VOLTAGE PROTECTION
Integrated input and output over-voltage protection
OVER CURRENT PROTECTION
Input over-current protection
CONTINUOUSLY MONITORED VARIABLES
DC input insulation resistance with respect to ground
DC injection of AC output
AC output voltage and frequency
Leakage current to ground
Internal ambient temperature
IGBT power module temperature

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2.4 Communication Overview
The SOLECTRIA PVI 25TL-480-R utilizes an advanced communication platform that can be accessed over Wi-Fi using a
smart device via the FOMlink wireless antenna device. This provides the user with a single point of access to all inverters
within a network, without needing to travel the site to interact with individual inverters.
The SOLECTRIA PVI 25TL-480-R is compatible with Solectria’s SolrenView with no additional hardware required. Yaskawa
Solectria also supports integration with other third party monitoring platforms.
Figure 2-2 Communications Overview
2.5 Inverter Diagrams
Figure 2-3 SOLECTRIA PVI 25TL-480-R Inverter

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COMM. PORT
VENT
LINKIT
DC INPUT
AC OUTPUT
For more details please see the user manual.

WARNING:
High touch current.
Earth connection essential before connecting supply.
4.4in (111.0mm)
11.1in(283.0mm)
12.1in(308.0mm)
13.1in(333.0mm)
323
4
5
1
6323
1.4in (35.0mm)
2.4in(60.0mm)
3.3in(85.0mm)
Figure 2-4 Wire-box Conduit Knockout Locations
①Knock-outs for DC input, (1) 1-1/2 inch Trade Size
②Knock-outs for AC output, (2) 1-1/2 inch Trade Size
③Knock-out for communication, (4) 3/4 inch Trade Size
④FOMlink Dongle port
⑤Vent
⑥External ground connection point (M6)
10
78 9
11 12
Figure 2-5 Wire-box Internal Connection Points

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①DC Input fuse holder/terminal (positive)
②DC Input terminal (negative)
③Communication board
④Internal ground terminal
⑤RSD transmitter
⑥AC output terminal block
2.6 Schematic Diagram and Circuit Design
The basic electrical schematic diagram of SOLECTRIA PVI 25TL-480-R inverters is shown in Figure 2-4. The input from PV
source circuits passes through surge protection circuitry, DC EMI wave filters, and independent DC-DC boost circuitry to
achieve maximum-power-point tracking and boost the voltages to a common DC bus. The inverter uses line voltage and
frequency measurements to synchronize to the grid and converts the available PV power to AC power by injecting
balanced 3-phase AC current into the electric utility grid. Any high frequency AC component is removed by passing
through a two-stage relay and EMI wave filter to produce high quality AC power.
WIRE BOX
INVERTER POWER HEAD
L1
L2
L3
N
PV1+
PV1+
PV1+
PV1-
PV1-
PV1-
MPPT1
MPPT2
AC
Output
PV Input
PV2+
PV2+
PV2+
PV2-
PV2-
PV2-
AC
Switch
Fuses
DC MOV
PV1+
DC Switch
Three
level
inverter
PV2+ PV-
PE
Type ⅢMOV
AFD
RSD
Figure 2-4 Basic electrical schematic diagram
2.7 Labels
The SOLECTRIA PVI 25TL-480-R has labels on the Power Head. Do not deface these labels as they contain important
information required for warranty service. The labels on the Power Head show the inverter specifications and FCC
compliance. See Figure 2-5.

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Figure 2-5 Example Power Head Labels for SOLECTRIA PVI 25TL
2.8 Unpacking
The SOLECTRIA PVI 25TL-480-R inverter ships in one box. Prior to installation, be sure to store the packaged inverter(s)
out of the elements. The inverter enclosures are not NEMA Type 4X rated until fully installed. Storage temperatures are
-40°F to +158°F (-40°C to +70°C). Open the boxes carefully to avoid damaging the contents.
NOTICE!
Store Packaged Inverter Properly: Never expose packaged inverters to rain, water, snow, or other elements that may
damage the electronics. The Power Head and Wiring Box are not NEMA Type 4X rated until fully installed. Failure to
store the inverters properly will result in damage that is not covered under warranty.
INFO ✔
Do Not Discard Packaging Before Removing all Contents: There are multiple components in each box. Check packaging
thoroughly before discarding.
A complete inverter ships with the components show in Figure 2-6 and described in Table 2-1.

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Figure 2-6 Shipment Box Contents

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Table 2-1 Shipment Box Contents
IDENTIFIER
PART
QUANTITY
DESCRIPTION
1
Power Head
1
Inverter Power Head, top
2
Wire-Box
1
Inverter Wire Box, bottom
3
Mounting Bracket Assembly
1
Mounting Bracket assembly, 1 piece
4
Accessory Kit
1
Necessary hardware and accessories for installation
A
M6 x 18mm Phillips Screw
12
4 for securing and bonding Wire-Box to Power Head; 6 for
securing the inverter to the mounting bracket; 1 for an
External Ground connection; 1 spare
B
6 Pin PCB Connector Plug
1
For RS485 Connection
C
2 Pin PCB Connector Plug
1
For Power Supply
D
Hex Socket Screw
1
Spare (for Wire-Box Cover)
E
FOMlink Wi-Fi Module
1
For access to HMI
3. Installation
Before attempting to install the SOLECTRIA PVI 25TL-480-R read Section 3 in its entirety.
WARNING
Read These Instructions: Failure to follow these installation instructions may result in personal injury or death. Read this
section in its entirety before attempting to install a SOLECTRIA PVI 25TL-480-R.
NOTICE!
Improper Installation Will Void Warranty: This section includes important information regarding the proper installation
environment and mechanical and electrical requirements. Failure to follow these instructions will void the warranty.
NOTICE!
Maintain NEMA 4X Rating: Water ingress could result in unsafe conditions. Please take note of the following
recommendations in order to maintain the NEMA rating and prevent water from entering into the system.
Adding weep holes or any other holes will void the warranty.
All conduits must be sealed to prevent moisture ingress.
oSealing conduit entries at the PV array will provide additional protection. Firestop putty or electrically
rated conduit foam is recommended.
NOTICE!
Allowable Ambient Temperature Ranges:
Storage Temperatures: -40°C to 70°C, Inverter not installed and in storage (in packaging or unpackaged).
Normal Operating Temperatures: -30°C to 60°C, Inverter installed, connected to electric utility grid, and
operating during daylight hours.
Connected but Off Temperatures: No low temperature limit to 70°C, Inverter installed, connected to electric
utility grid but non-operating (daylight or nighttime hours).

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PRE-INSTALLATION CHECKLIST
Check that the inverter environmental specifications (protection degree, operating temperature range,
humidity and altitude, etc.) meet the requirements of the specific project location.
Make sure that the electric utility grid voltage is within range for the grid standard chosen.
Ensure that the local electric utility grid authority has granted permission to connect to the grid.
Installation personnel must be qualified electricians or those who have received professional training.
Wear and use proper personal protective equipment (PPE) during installation.
Sufficient space according to Figure 3-3 must be provided to allow the inverter cooling system to operate
effectively.
Install the inverter away from flammable and/or combustible substances.
Avoid installing the inverter in locations that exceed the temperature limits specified for the inverter to prevent
undesirable power loss.
NOTICE!
Outdoor Installations that are Left for Extended Periods of Time without Power:
Yaskawa Solectria Solar advises against leaving inverters mounted outdoors for an extended period of time (more than
90 days) or exposing the inverters to cycles of freezing temperatures without both DC and AC power connected to the
inverters.
The inverter enclosures are tested and rated NEMA 4X. However, there exists the possibility of water condensation
inside the inverter enclosure when it is left exposed to an outdoor environment without power for an extended period
of time. Humidity can enter the power head through a small opening between itself and the wire-box. When the inverter
is exposed to temperature swings, especially in cold weather, moisture inside the inverter power head could condense
over the aluminum heatsink area where inverter semiconductors are mounted. Water droplets on the heatsink may
cause a short circuit on live semiconductor devices. When a PV source is applied to the inverter, this PV power source
could cause the inverter to fail and result in a short circuit across the PV array.
If the inverter is mounted outdoors without operating power for an extended period of time, Yaskawa Solectria Solar
recommends that the inverter power head be inspected for water condensation before any DC or AC power is applied to
the inverter. Without inspection, customers run the risk of having electronic circuit damage when power is applied to
the inverter during startup. It is advised that customers contact the Yaskawa Solectria Solar service department at +1
[phone] x2 for further advice and to schedule an inspection of the inverters on-site.
This Installation Section is broken into five sub-sections: Mechanical Installation, Wire-Box, DC Electrical Installation, AC
Electrical Installation, and Communications Installation.

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Each subsection begins with general requirements and guidelines which must be considered when designing a system
and planning the installation. Each sub-section is concluded with detailed systematic instructions to install the
SOLECTRIA PVI 25TL-480-R.
3.1 Installation Sequence Overview
1. Install the Mounting Bracket.
2. Install the Power Head.
3. Remove bulkhead cover from top of Wire-Box.
4. Install the Wire-Box.
5. Connect the Power Head and Wire-Box together.
6. Confirm that the site AC breaker is set to OFF.
7. Remove the cover of the Wire-Box.
8. Land the AC conductors from the grid to the AC terminal block in the Wiring Box, ensuring a Positive Phase
rotation.
9. Land the input PV circuit conductors by connecting to the DC fuse holders in the Wiring Box.
10. Land the communication conductors.
11. Install duct seal/firestop putty in all conduit entrances.
12. Replace the plastic shields and the cover of the Wire-Box.
3.2 Mechanical Installation
Inverter Environment3.2.1
The SOLECTRIA PVI 25TL-480-R is equipped with a NEMA Type 4X rated, Polyester Powder-Coated Aluminum enclosure
suitable for outdoor installation in many different climates. Select the mounting location appropriately taking into
consideration, snow, wind, rain, direct sun, pests, vegetation growth, and any other local environmental conditions. To
increase its life span, it is recommended that the inverter be installed out of direct sunlight; for example, under a shade
structure, on a north facing building wall, or on north facing racking. Never install inverters in areas that are prone to
flooding, standing water, prolonged snow coverage, or near explosive or flammable materials.
WARNING
Exposion or Fire Hazard: Electrical devices can cause fires. Never install in areas prone to explosive gasses, liquids, or in
close proximity to flammable materials.
NOTICE!
CAUTION
Lifting Heavy Object Hazard: Proper lifting techniques must be used in order to avoid injuries. The Power Head weighs
48.5 pounds (22 kg).

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Maintain NEMA Type 4X Rating: It is the responsibility of the installer to maintain the NEMA Type 4X rating of the
enclosure. Failure to maintain the NEMA Type 4X rating will void the warranty.
NOTICE!
Improper Installation Will Void Warranty: Never install the inverter in areas that are prone to flooding, standing water,
or prolonged snow coverage. It is important to ensure the cooling fans and exhausts remain clear from obstructions at
all times.
INFO ✔
Temperature Derating: The SOLECTRIA PVI 25TL-480-R is rated for a wide range of operating temperatures. When
installed in environments that may experience ambient temperatures near or above the derating temperature of
104F (40C), it is best to keep the inverter out of direct sunlight to minimize temperature de-rating and extend product
life.
Figure 3-1 Inverter Mounting Options
Inverter Mounting Angle and Orientation3.2.2
The SOLECTRIA PVI 25TL-480-R is designed to accommodate mounting angles between vertical and 75° from vertical. If
tilted at 75° from vertical (15° from horizontal) in an outdoor environment, the Shade Cover accessory is required. See
Section 8.1.2 for more details. When possible, install the inverter vertically facing north to minimize damage caused by
sunlight exposure and to improve ventilation.
1. The Power Head must be installed above the Wire-Box. Never install the inverter upside down.

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2. The bottom edge of the Wire-Box must remain horizontal (perpendicular to a plumb line). No side-to-side tilting is
permitted.
3. Do not mount the inverter leaning forward.
4. Do not mount the inverter at an angle lower than 15° from horizontal.
Inverter Dimensions3.2.3
The dimensions of the SOLECTRIA PVI 25TL-480-R are shown in Figure 3-2.
Figure 3-2 Inverter Dimensions
Inverter Spacing3.2.4
It is important to allow ample spacing for ventilation, wire management, and service. The minimum spacing
requirements are shown in Figure 3-3. Always keep the clearance area free from debris, plants, and other obstructions.
NOTICE!
Improper Installation Will Void Warranty: The requirements defined in this section are the minimum allowable
clearances. In areas that experience deep snows, heavy rain, excessive heat (greater than 45 °C), or excessive vegetation
growth, it may be necessary to increase spacing. It is the responsibility of the installer to ensure the clearance area
remains free from debris, plants, and other obstructions at all times. The recommended spacing below the inverter can
be modified according to installation requirements. Install the inverter higher than the flood line and/or typical snow
build-up.