PVI 50-100KW Installation and Operation Manual

PVI 50-100KW Installation and Operation Manual
PVI 50KW
PVI 60KW
PVI 75KW
PVI 85KW
PVI 100KW
INSTALLATION AND OPERATION MANUAL
Revision D
© 2017, Yaskawa – Solectria Solar
PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
IMPORTANT REGISTRATION AND
WARRANTY INFORMATION
For warranty to become active, this inverter
must be registered. To activate warranty and
register inverter, please visit the link below.
www.solectria.com/registration
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
In this manual “inverter” or “inverters” refers to the inverter models: PVI 50KW, PVI 60KW, PVI
75KW, PVI 85KW, and PVI 100KW unless one of the specific models is noted.
This manual contains important instructions that shall be followed during installation and
maintenance of the inverter.
To reduce the risk of electrical shock, and to ensure the safe installation and operation of the
inverter, the following safety symbols are used to indicate dangerous conditions and important
safety instructions:
WARNING: Use extreme caution when performing this task.
This indicates a fact or feature very important for the safety of the user
and/or which can cause serious hardware damage if not applied
appropriately.
NOTE: This indicates a feature that is important either for optimal and
efficient use or optimal system operation.
EXAMPLE: This indicates an example.
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
IMPORTANT SAFETY INSTRUCTIONS

All electrical installations shall be performed in accordance with applicable local, state, and national codes.

The inverter contains no user serviceable parts. Please contact Solectria Renewables or a Solectria Renewables
authorized system installer for maintenance. See Appendix C for Solectria Renewables contact information
and authorized system installers.

Before installing or using the inverter, please read all instructions and caution markings in this manual, on the
inverter, as well as on the PV modules.

Connection of the inverter to the electric utility grid must be completed after receiving prior approval from the
utility company and must only be performed by qualified personnel.

PV modules produce dangerous electrical voltage and current when exposed to light and could create
hazardous conditions. Completely cover the surface of all PV modules with an opaque material before wiring
them or do not connect inter-module cables, PV source circuits, and/or PV output circuits under load.

The inverter enclosure and both disconnect switches must be locked (requiring a tool or key for access) for
protection against risk of injury to persons. The enclosure includes a lockable handle and comes with a key. Keep
the key in a safe location in case access to the cabinet is needed. A replacement key can be purchased from
Solectria Renewables.
SAVE THESE INSTRUCTIONS
PRESCRIPTIONS DE SECURITE IMPORTANTES

Tous les travaux d’installation électrique doivent être exécutés en conformité aux normes électriques locales
ainsi qu’à la norme nationale américaine et canadienne.

Le PVI ne contient aucune pièce requérant un entretient effectué par l‘utilisateur. Pour toute maintenance,
veuillez consulter Solectria Renewables ou un installateur agrée par Solectria Renewables (les coordonnées de
Solectria Renewables et des installateurs agrées sont indiquées sur le site web de Solectria Renewables:
www.solectria.com.

Avant d’installer ou d’utiliser le PVI veuillez lire toutes instructions et toutes les mises en garde présentes dans
ce manuel, sur le PVI et sur les modules PV.

Le raccordement du PVI au réseau électrique ne doit être effectuée qu’après avoir obtenu une entente
d’interconnexion auprès de la compagnie locale de distribution électrique et uniquement par du personnel
autorisé et qualifié.

La surface de tous les capteurs PV doivent être recouverte entièrement d’un matériel opaque

(noir) avant de procéder au câblage. Les capteurs PV exposés a la lumière produisent du courant électrique
susceptible de créer une situation de risque.
CONSERVEZ CES INSTRUCTIONS
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
Table of Contents
1 Introduction ................................................................................................................................. 7
2 Site Preparation and Inverter Placement .................................................................................... 9
2.1 Clearance Requirements ..................................................................................................... 10
2.2 Inverter Dimensions ............................................................................................................ 11
3 Installation ................................................................................................................................. 11
3.1 Checking For Shipping Damage........................................................................................... 11
3.2 Inverter Lifting..................................................................................................................... 11
3.3 Mounting Details................................................................................................................. 12
4 DC Connections from the PV Array and AC Connections to the Grid ........................................ 14
4.1 Grounding ........................................................................................................................... 14
4.2 AC Grounding Connections ................................................................................................. 16
4.3 DC Grounding Connections ................................................................................................. 17
4.4 AC Power Connections ........................................................................................................ 18
AC Cable Entry....................................................................................................................... 19
Neutral Kit Option ................................................................................................................. 22
4.5 AC Ground Fault Detection ................................................................................................. 23
4.6 DC Power Connections........................................................................................................ 24
DC Cable Entry ...................................................................................................................... 24
Standard DC Disconnect Switch ............................................................................................ 27
Fused DC Subcombiner ......................................................................................................... 27
DC Breaker Subcombiner ...................................................................................................... 28
DC Breaker Damage .............................................................................................................. 28
4.7 DC Ground Fault Detection and Interruption ..................................................................... 28
4.8 Lightning and Surge Protection........................................................................................... 31
4.9 Remote Shutdown and Revenue Grade Meter Terminals.................................................. 31
5 Commissioning the Inverter....................................................................................................... 33
5.1 Turning on the Inverter ....................................................................................................... 33
5.2 Operation ............................................................................................................................ 34
5.3 Turning Off the Inverter ...................................................................................................... 34
6 Inverter Control and Communications” in the PVI 50-100 ........................................................ 35
LED Indicators ........................................................................................................................... 37
6.1 Button Descriptions ............................................................................................................ 38
6.2 Main Display........................................................................................................................ 39
6.3 Accessing the Menu ............................................................................................................ 39
6.4 Navigating the Menu Structure .......................................................................................... 40
6.5 Displaying Inverter Measurements..................................................................................... 41
6.6 Controlling the Inverter ...................................................................................................... 43
6.7 Stopping and Starting the Inverter ..................................................................................... 44
Quick Stop and Start ............................................................................................................. 44
6.8 Accessing Password Protected Functions ........................................................................... 45
6.9 Changing the Inverter Password ......................................................................................... 46
6.10 Changing Voltage and Frequency Trip Settings ................................................................ 47
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6.11 Establishing Ethernet Connectivity ................................................................................... 50
6.12 Setting up TCP/IP Networking .......................................................................................... 51
6.13 Viewing Current TCP/IP settings: ...................................................................................... 51
6.14 Manually Configuring Network Settings ........................................................................... 53
6.15 Automatically Configuring Network Settings ................................................................... 56
6.16 Setting Fallback IP Address ............................................................................................... 57
6.17 Enabling SolrenView Web-based Monitoring ................................................................... 60
6.18 Viewing and setting the Date/Time .................................................................................. 61
6.19 Rebooting the SolrenView Gateway ................................................................................. 64
6.20 Resetting the SolrenView Gateway to Factory Defaults................................................... 65
6.21 Inverter Counts and Logs .................................................................................................. 66
6.22 Displaying Error Counts..................................................................................................... 67
6.23 Displaying Error Logs ......................................................................................................... 69
6.24 Clearing Error Counts or the Log....................................................................................... 71
6.25 HMI Menu Structure ......................................................................................................... 73
7 Troubleshooting and Maintenance ........................................................................................... 74
7.1 Inverter Messages ............................................................................................................... 74
7.2 Troubleshooting .................................................................................................................. 76
7.3 Preventative Maintenance ................................................................................................. 77
7.4 Intake Louver Vent Cleaning ............................................................................................... 78
7.5 Opening Main Enclosure, DC Disconnect Switch, and AC Disconnect Switch .................... 78
7.6 Fuse replacements .............................................................................................................. 80
8 Product Warranty and RMA Policy ............................................................................................ 81
9 Technical Data ............................................................................................................................ 82
9.1 Input DC (PV) Specifications................................................................................................ 82
9.2 Output AC Specifications .................................................................................................... 83
9.3 Other Specifications ............................................................................................................ 84
9.4 Internal Circuit Diagram ...................................................................................................... 86
10 Appendices ............................................................................................................................... 87
10.1 Appendix A – PVI 50KW, 60KW, 75KW, 85KW, 100KW Data Sheet ................................. 87
10.2 Appendix B – String Sizing Tool ......................................................................................... 87
10.3 Appendix C – Contact Information ................................................................................... 87
10.4 Appendix D – Authorized Distributors .............................................................................. 87
10.5 Appendix E – UL1741/IEEE 1547 Authorization Letter to Mark Product ......................... 88
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1 Introduction
The PVI 50-100KW inverter series are commercial, three-phase grid-tied PV inverters designed to
be interconnected to the electric utility grid. By following this manual the inverter can be installed
and operated safely. This installation guide is used as a reference for commissioning and as a
guideline on how to use the inverter most effectively.
Feeding power onto the grid involves conversion of the DC voltage from the PV array to grid
compatible AC voltage by inverting DC to AC. This unit feeds power into a standard, three-phase
commercial, industrial, institutional or electrical utility facility’s electrical system which is
connected to the electrical grid.
If the PV system and inverter are providing the same amount of electrical power that the facility is
using, then no power is taken from or fed into the utility grid. If the facility is using more power
than the PV system is providing, then the utility grid provides the balance of power. If the facility
is using less power than the PV system is generating, then the excess is fed into the utility grid.
Be sure to follow local regulations regarding net metering and interconnection in your local area.
Note that some utilities need to change their revenue kWh meter for proper net metering
measurement and billing.
Photovoltaic Array
PVI Series Inverter
Figure 1.1 – Grid-Tied Inverter Application
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Electrical
Grid
PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
AC Disconnect
switch
LCD Display, Keypad,
& LED Indicators
DC disconnect
switch
Nameplate
Cooling Air Intake
Figure 1.2 – PVI Inverter (Front View)
Communications or
SolrenView AIR
Exhaust Air Output
Figure 1.3 – PVI Inverter (Rear View)
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2 Site Preparation and Inverter Placement
The inverter is comprised of a rainproof, industrial enclosure containing electrical and electronic
components and AC and DC integrated disconnecting means.
NOTE: If the inverter is mounted outside, ensure that the enclosure and disconnect switch
doors remain closed during the installation process in case of rain or snow. Leaving these
doors open during installation will void the warranty.
NOTE: It is recommended to store the inverter indoors before installation. If the inverter
is to be stored outdoors for more than one month before being installed and
commissioned, care must be taken to avoid condensation inside the unit. Removing the
protective shipping wrap and placing a small space heater inside the unit minimizes the
amount of condensation that can occur during onsite outdoor storage. Once operational,
the inverter will generate its own heat to prevent condensation.
Criteria for Device Mounting:

Because the power electronics are within the rainproof enclosure, the inverter can be mounted
outdoors.

The longest life for the inverter can be achieved by mounting the unit in a clean, dry and cool
location.

For optimal electrical system efficiency, use the shortest possible AC and DC cables and use the
maximum allowable cable size.

Avoid installation in close proximity to people or animals, as there is an audible high-frequency
switching noise.

Install the inverter in an accessible location following local electric codes for enclosure and
disconnect switch door clearances and proximity to other equipment.

Although the inverter is designed to function at full power continuously in up to 55oC ambient
temperature, for longest inverter life and performance, do not mount the inverter in direct
sunlight, especially in hot climates. If the unit must be mounted in direct sunlight a metal sunshield is recommended. It is recommended that the inverter is mounted on the north side of
buildings or on the north side of a ground mount PV array.
CAUTION:
Be sure to verify load capacity of floor, roof or pad, and ensure that
lifting equipment has adequate lifting capacity to lift the unit.
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Inverter Model
PVI 50-60KW
PVI 75-85-100KW
Weight
1,450 lbs
1,875 lbs
Table 2.1 – Weight of PVI 50-100 Inverters

Installations in most US jurisdictions are subject to NFPA 70, known commonly by electricians
as the National Electric Code (NEC). The NEC requires that the inverter be connected to a
dedicated circuit and no other outlets or devices may be connected to this circuit. The NEC
also imposes limitations on the size of the inverter and the manner in which it is connected to
the utility grid. See applicable revision of the NEC for more information. It is the installer’s
responsibility to follow all applicable electric codes.
2.1 Clearance Requirements

The ambient temperature must be between –40oF and +130oF (–40oC and +55oC) for full power,
continuous operation. The inverter will automatically reduce power or may shut down to
protect itself if ambient air temperature at the intake rises above 130oF (55oC).

The cooling air exhausts at the rear and bottom of the enclosure. Nothing should block the 4 inch
clear space under the enclosure between the mounting feet.

A minimum distance of 8 inches (200mm) must be clear behind the inverter for rear cooling air
exhaust. 12 inches (300mm) is recommended.

A minimum distance of 12 inches (300mm) must be clear above the inverter for ventilation.

Make sure the AC and DC disconnect switches are accessible during operation and that all doors
may be fully opened for maintenance. Install the inverter in an accessible location following
applicable electrical codes for working clearance requirements and proximity to other
equipment.

If you are installing the inverter in an electrical closet, the air circulation must be sufficient for
heat dissipation. Provide external ventilation to maintain an ambient condition of less than
130oF (55oC). The ambient temperature should be kept as low as possible at all times for
optimal inverter operation and life.
Model
Max. Heat Loss
PVI 50KW 7,000 Btu/hr
PVI 60KW 8,250 Btu/hr
PVI 75KW 8,000 Btu/hr
PVI 85KW 12,000 Btu/hr
PVI 100KW 14,000 Btu/hr
Table 2.2 – Indoor Cooling Requirements
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
2.2 Inverter Dimensions
Refer to the customer interface drawing (DOCR-070190) for detailed inverter dimensions.
3 Installation
WARNING: Before installing the inverter, read all instructions and caution markings
in this manual and on the inverter as well as on the photovoltaic modules.
WARNING: Electrical installation shall be performed in accordance with all local
electrical codes, the National Electrical Code (NEC), NFPA 70, or Canadian Electrical
Code for Canada (CEC).
WARNING: Connecting the inverter to the electric utility grid must only be completed
after receiving prior approval from the utility company and installation performed only
by qualified personnel/licensed electrician(s).
3.1 Checking For Shipping Damage
The inverter is thoroughly checked and tested rigorously before it is shipped. Even though it is
bolted onto a rugged, oversized pallet for delivery, the inverter may have been damaged during
shipping by poor handling, trucking or transfer station activity.
Please inspect the inverter thoroughly after it is delivered. If any damage is seen, immediately
notify the shipping company to make a claim. If there is any question about potential shipping
damage, contact Solectria Renewables. Photos of the damage will be helpful in documenting
potential shipping damage.




Do not accept the unit if it is visibly damaged or if you note visible damage when signing
shipping company receipt.
Note damage on shipping papers with the truck driver. Report damage immediately to the
shipping company.
Do not remove the unit from pallet/packaging if damage is evident.
If it is determined that the unit must be returned, a RMA number must be obtained from
Solectria Renewables prior to shipping the unit back.
3.2 Inverter Lifting
WARNING: The inverter may tip over if improperly moved, potentially causing damage
to equipment, personal injury or death. Do not tilt the pallet or inverter while moving
it.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)



Use a forklift or fork attachment or other equipment if lifting from the bottom. The forks should
be set with a 27" outside spacing so they fit just in between the inverter's 4 x 4" aluminum tube
feet. Before lifting, make sure forks are against the inside edges of both feet.
Once off the pallet, a pallet jack can also be used to roll the unit on a floor. Use a 27” wide jack.
Alternatively, the inverter can be lifted using the lifting tabs on the top. If using this lifting
method, lift with vertical chains and hooks connected to a proper lifting device. Please refer to
the customer interface drawing (DOCR-070190) for the minimum recommended chain length
to prevent damage to the inverter.
3.3 Mounting Details
WARNING: Do not install the inverter on or over combustible surfaces or materials.
The inverter includes mounting feet with four holes sized for ½” diameter hardware. Refer to the
diagram below and the customer interface drawing (DOCR-070190) for detailed mounting
dimensions.
It is recommended to use four bolts for the mounting feet. Hot dip galvanized grade 5, grade 8, or
stainless steel bolts ½” (13mm) in diameter are acceptable. Use a lock washer and flat washer with
each bolt.
Once mounting is completed, remove shipping aids from the inverter including packing material
under cowl on front door, packing material between large power cables and the contactor inside
upper portion of the inverter, and packing material inside the DC disconnect switch enclosure near
the switch mechanism.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
Fig. 3.3 Mounting Hole Diagram (View from top of Inverter)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
4 DC Connections from the PV Array and AC Connections to the Grid
WARNING: All electrical installations shall be performed in accordance with applicable
local, state, and national electric codes.
WARNING: Only connect the DC and AC power and grounding wires with the AC and DC
disconnect switches off and the circuits isolated from AC power from the grid and DC
power from the array.
WARNING: Make sure to connect the inverter and other exposed metal equipment in
the system to the grounding electrode system through the installation of the Grounding
Electrode Conductor(s) and Equipment Grounding Conductors before proceeding to
connect any DC or AC power wires.
WARNING: Only make AC connections directly to the lugs within the AC disconnect
switch and DC connections to the lugs within the DC disconnect switch.
NOTE: All grounding and power wiring terminals are dual rated for Copper and
Aluminum Wire. When using aluminum wire exercise best industry practices to ensure a
reliable connection; thoroughly clean the conductor just prior to making the electrical
connection and use an oxide inhibitor to prevent the formation of aluminum oxide.
NOTE: Grounding and power wiring terminals are rated to 167°F (75ᵒC).
NOTE: When conduit hubs are used for DC and AC cable entry in an outdoor or wet
location, rain-tight or wet location hubs that comply with the requirements in the
Standard For Fittings For Conduit and Outlet Boxes, UL514B, are to be used.
AC grounding and power connections are made in the AC disconnect switch of the inverter. The
type of AC disconnect switch provided with the inverter depends on the inverter power rating,
output voltage, and fusing specified by the customer (i.e. fused or unfused).
DC grounding and power connections are made in the DC disconnect switch of the inverter. The
type of DC disconnect switch provided with the inverter depends on the inverter power rating and
DC overcurrent protection specified by the customer (i.e. fuses or breakers, amperage, and
quantity).
4.1 Grounding
The PVI 50-100KW inverter has grounding connection points in the DC and AC disconnect switches
as listed below. These points are used for Grounding Electrode Conductor (GEC) and Equipment
Grounding Conductor (EGC) connections. PV systems have EGC and GEC conductor requirements
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
on both the AC and DC points of entry. GEC(s) and EGC(s) should be sized and installed per the
electrical code requirements of the Area Having Jurisdiction.

DC Disconnect Switch
o Ground Lug – For DC GEC connection. Depending on the grounding system
configuration, the DC ground lug may serve as the connection point for combined:
 DC GEC and AC GEC
 DC GEC, AC GEC, and AC EGC
o Ground Bar – For DC EGC connection(s)

AC Disconnect Switch
o Ground Lug (400A AC disconnect switch only) – For AC GEC in systems with separate
DC and AC GEC’s.
o Ground Bar – For AC EGC connection(s). Depending on the grounding system
configuration, the AC ground bar may also serve as the connection point for the AC
GEC.
The DC and AC grounding connection points are internally bonded within the inverter along with the
inverter enclosure, disconnect switches, and other internal metal components and circuits that
require a connection to ground. The grounding circuit is isolated from the internal isolation
transformer neutral point and optional neutral kit.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
4.2 AC Grounding Connections
AC grounding connection locations, connection quantity, conductor range, and terminal torque
requirements are shown below.
AC Ground Bar
AC Ground Bar
AC Ground Lug
(400A AC Disco Only)
Fig. 4.1a AC Ground Connection – 200A
(200A Unfused AC Disconnect Switch Shown)
Fig. 4.1b AC Ground Connection – 400A
(400A Unfused AC Disconnect Switch Shown)
AC Disconnect
Switch Type*
200A
AC Ground
Max Number of
Connection
Connections
Conductor Range
2
6 AWG - 1/0 AWG
Ground Bar
2
4 AWG - 1/0 AWG
Ground Bar
400A
1
2 AWG– 250 kcmil
Ground Lug
*See Tables 4.3 & 4.4 to determine the AC disconnect switch type by inverter model.
Torque
40 in-lbs
40 in-lbs
275 in-lbs
Table 4.1 – AC Ground Conductor Sizes & Torques
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4.3 DC Grounding Connections
DC grounding connection locations, connection quantity, conductor range, and terminal torque
requirements are shown below.
DC Ground Lug
DC Ground Bar
Fig. 4.2 DC Ground Connection
(600A DC Disconnect Switch w/ DC Breakers Shown)
DC Disconnect
Switch Type*
DC Ground
Max Number of
Connection
Connections
Conductor Range
4
14 - 1/0 AWG
Ground Bar
400A
1
6AWG - 250kcmil
Ground Lug
5
14 - 6 AWG
Ground Bar
600A
1
6AWG - 250kcmil
Ground Lug
*See Table 4.6 to determine the DC disconnect switch type by inverter model.
Torque
40 in-lbs
275 in-lbs
40 in-lbs
275 in-lbs
Table 4.2 – DC Ground Conductor Sizes & Torques
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
4.4 AC Power Connections
NOTE: Each AC lug is designed for single conductor use only. Where multiple lugs per
phase are provided, each lug is designed for single conductor use only.
NOTE: Note that each inverter power rating is offered with the option of either a fused
or unfused AC disconnect switch. The installer should refer to the current requirements
for the specific inverter power rating, AC voltage, and disconnect switch type
(fused/unfused) to determine the appropriate wire sizes.
NOTE: The phase rotation of the grid connections to the inverter must follow the L1/A,
L2/B and L3/C clockwise order.
NOTE: When a fused AC disconnect switch is not provided, overcurrent protection of AC
power output cables shall be provided by others according to local, state, and national code
requirements.
The PVI 50-100KW models come with either a standard AC disconnect switch without fuses or
optional fused AC disconnect switch (depending on what was ordered). The AC Power Wiring
connections are made within the inverter’s AC disconnect switch as shown below.
Note that the AC disconnect switches of PVI 50-100KW inverters are load break rated.
L1
L2
L3
Fig. 4.3 AC Power Connections - 200A
(200A Unfused AC Disconnect Switch Shown)
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L1
L2
L3
Fig. 4.4 AC Power Connections - 400A
(400A Unfused AC Disconnect Switch Shown)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
AC Cable Entry
The AC cable entry location depends on the AC disconnect switch current rating and orientation
(side facing or forward facing). Use the following tables to determine which disconnect switch your
inverter uses, and then refer to the customer interface drawing (DOCR-070190) for AC cable entry
locations.
AC Voltage Drop
AC voltage drop should be minimized to avoid nuisance tripping resulting from increased AC
voltage seen at the inverter’s output terminals as the inverter feeds current into the grid.
Minimizing AC voltage drop also results in higher system efficiency. An AC voltage drop of less than
1% is recommended.
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The table below pertains to the standard AC disconnect switches without fuses. It includes
requirements for the AC conductor size, the number of terminals available, proper terminal torque,
and AC disconnect switch current ratings for all PVI 50-100KW inverter models. The PE models use
the same AC disconnect switches as the standard models.
AC
VOLTAGE
INVERTER MODEL
With Unfused AC
Disconnect Switch
PVI 50KW 208V
TERMINALS
PER PHASE
WIRE GAUGE
TERMINAL
TORQUE
1
2/0AWG - 250kcmil
275 in-lbs
DISCONNECT
SWITCH
SIZE
200A
1
4/0AWG - 250kcmil
275 in-lbs
200A
1
300kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
1
350kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
1
500kcmil - 750kcmil
500 in-lbs
2
2/0AWG - 300kcmil
500 in-lbs
PVI 50KW 240V
1
1/0AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 240V
1
3/0AWG - 250kcmil
275 in-lbs
200A
1
4/0AWG - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
1
300kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
1
350kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
PVI 50KW 480V
1
4AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 480V
1
3AWG - 250kcmil
275 in-lbs
200A
PVI 75KW 480V
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 85KW 480V
1
1AWG - 250kcmil
275 in-lbs
200A
PVI 100KW 480V
1
1/0AWG - 250kcmil
275 in-lbs
200A
PVI 50KW 600V
1
6AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 600V
1
4AWG - 250kcmil
275 in-lbs
200A
PVI 75KW 600V
1
3AWG - 250kcmil
275 in-lbs
200A
PVI 85KW 600V
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 100KW 600V
1
1AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 208V
PVI 75KW 208V
208V
PVI 85KW 208V
PVI 100KW 208V
PVI 75KW 240V
240V
PVI 85KW 240V
PVI 100KW 240V
480V
600V
400A
400A
400A
400A
400A
400A
Table 4.3 – AC Power Conductor Sizes & Torques for Standard AC Disconnect Switches
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The table below pertains to the optional AC disconnect switches with fuses. It includes
requirements for the AC conductor size, the number of terminals available, proper terminal torque,
and AC fuse and disconnect switch current ratings for all PVI 50-100KW inverter models. The PE
models use the same AC disconnect switches as the standard models.
AC
VOLTAGE
INVERTER MODEL With
Fused AC Disconnect
Switch
AMPERAGE
OF
INTEGRATED
FUSING
TERMINALS
PER PHASE
WIRE GAUGE
TERMINAL
TORQUE
DISCONNECT
SWITCH SIZE
PVI 50KW 208V
175A
1
2/0AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 208V
225A
1
4/0AWG - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
PVI 75KW 208V
300A
1
300kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
PVI 85KW 208V
300A
1
350kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
PVI 100KW 208V
350A
1
500kcmil - 750kcmil
500 in-lbs
2
2/0AWG - 300kcmil
500 in-lbs
PVI 50KW 240V
150A
1
1/0AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 240V
200A
1
3/0AWG - 250kcmil
275 in-lbs
200A
PVI 75KW 240V
225A
1
4/0AWG - 750kcmil
500 in-lbs
400A
PVI 85KW 240V
300A
1
300kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
PVI 100KW 240V
300A
1
350kcmil - 750kcmil
500 in-lbs
2
1/0AWG - 300kcmil
500 in-lbs
PVI 50KW 480V
110A
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 480V
110A
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 75KW 480V
125A
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 85KW 480V
150A
1
1AWG - 250kcmil
275 in-lbs
200A
PVI 100KW 480V
150A
1
1/0AWG - 250kcmil
275 in-lbs
200A
PVI 50KW 600V
110A
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 60KW 600V
110A
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 75KW 600V
110A
1
2AWG - 250kcmil
275 in-lbs
200A
PVI 85KW 600V
110A
1
2AWG - 300kcmil
500 in-lbs
200A
PVI 100KW 600V
125A
1
1AWG - 250kcmil
275 in-lbs
200A
208
240
480
600
Table 4.4 – AC Power Conductor Sizes & Torques for Fused AC Disconnect Switches
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400A
400A
400A
400A
400A
400A
PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
Neutral Kit Option
A neutral is not required for proper inverter operation; hence, the inverter is most often connected
as a 3-wire system with no connection point for a neutral conductor. For the interconnection of
the inverter as a 4-wire system, a neutral kit option is available. As shown in Figure 4.5, the kit
includes a factory installed neutral lug inside the AC disconnect switch to connect a neutral
conductor. When configured with the neutral kit, a jumper from the neutral lug to the isolation
transformer neutral point is installed at the factory (see Simplified One-Line Drawing – Section 8.4).
The neutral kit circuit is fully isolated from ground.
NOTE: When a neutral conductor is connected to the inverter, currents may flow on the
neutral due to site specific characteristics of the electric service feeding the project site,
such as voltage imbalance and voltage harmonics. This neutral current may increase the
inverter’s operating temperature, reduce inverter efficiency, and shorten the inverter’s
life. If a neutral is connected at the inverter, it is the customer’s responsibility to
determine if the site will be impacted by neutral currents and to determine if additional
overcurrent protection is required to protect the inverter and neutral conductor.
Neutral Kit
(Optional)
Fig. 4.5 Neutral Kit (200A Unfused AC Disconnect Switch shown)
The following table shows the number and size of neutral conductors and the torque specifications
for the neutral connection. The type of neutral kit installed is determined by the AC disconnect
switch. Refer to Tables 4.3 and 4.4 to find the AC disconnect switch for your specific PVI 50-100KW
model.
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AC
DISCONNECT
SWITCH TYPE
NO. OF
NEUTRAL
CONDUCTORS
WIRE GAUGE
TERMINAL
TORQUE
200A
1
6AWG - 250kcmil
275 in-lbs
3
6AWG - 250kcmil
275 in-lbs
1 or
2
1/0AWG - 750kcmil
400A
1/0AWG - 300kcmil
500 in-lbs
*See Tables 4.3 & 4.4 to determine the AC disconnect switch type by inverter model.
Table 4.5 – AC Neutral Conductor Sizes & Torques
4.5 AC Ground Fault Detection
The PVI series of inverters are not equipped with AC ground fault protection. When AC ground fault
protection is used on the onsite electrical service, determine if the ground fault device is listed to
be backfed. The inverter AC output should be connected on the supply side of the device unless
the device is specifically listed for a backfeed application, then the inverter may be installed on
either the load or supply side of the device. Always consult the AC ground fault manufacturer for
guidance on backfeeding their devices in a Code compliant manner.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
4.6 DC Power Connections
NOTE: The PVI 50-100KW inverter models are designed for negative-grounded PV arrays
only. Contact Solectria Renewables before you install a system with positive-grounded
PV arrays.
NOTE: The maximum current from the PV array must be below the rating of the DC
disconnect switch. The DC disconnect switches of the PVI 50-100KW inverters are load
break rated.
The PVI 50-100KW models come with either a standard DC disconnect switch or optional DC
subcombiner located inside the DC disconnect switch enclosure. The table below indicates the DC
disconnect switch current ratings for PVI 50-100KW inverters.
Inverter Power
Rating
50KW, 60KW, 75KW
85KW, 100KW
DC Disconnect
Voltage Rating
600 VDC
600 VDC
DC Disconnect
Current Rating
400 Amps
600 Amps
Table 4.6 DC Disconnect Switch Types
Optional string subcombiners are offered. See Tables 4.8 & 4.9 and inverter spec sheet (link
provided in Section 9.1) for more information on DC disconnect switch integrated overcurrent
protection options (fusing or breakers, amperage, and quantity).
DC Cable Entry
The DC cable entry location depends on the DC disconnect switch current rating and orientation
(side facing or forward facing). Use Table 4.7 to determine which disconnect switch your inverter
uses, and then refer to the customer interface drawing (DOCR-070190) for DC cable entry locations.
The DC Power Wiring connections are made within the inverter’s DC disconnect switch enclosure.
The grounded conductor is bonded to the inverter’s internal ground bus through the ground fault
detection and interrupt circuit (GFDI). Grounded conductors should not be bonded to ground at any
other point in the system. The ungrounded conductors must never be bonded to ground.
Figures 4.6a and 4.6b on the following pages show the locations of ungrounded and grounded DC
power connections for some typical PVI 50-100KW DC disconnect switch and subcombiner options.
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Grounded
Conductor
Connection
Grounded
Conductor
Connection
Ungrounded
Conductor
Connection
Ungrounded
Conductor
Connections
No Subcombiner
Grounded
Conductor
Connection
Subcombiner with (8) 40-60A Fuses
Grounded
Conductor
Connection
Ungrounded
Conductor
Connections
Ungrounded
Conductor
Connections
Subcombiner with (6) 70-100A Fuses
Subcombiner with (4) 110A-200A Fuses
Figure 4.6a DC Power Connection Locations (1 of 2)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
Grounded
Conductor
Connection
Grounded
Conductor
Connection
Ungrounded
Conductor
Connections
Ungrounded
Conductor
Connections
Subcombiner with (2) 225A-300A Fuses
Grounded
Conductor
Connection
Subcombiner with (6) 40-100A Breakers
Grounded
Conductor
Connection
Ungrounded
Conductor
Connections
Ungrounded
Conductor
Connections
Subcombiner with (3) 110A-200A Breakers
Subcombiner with (2) 225A-300A Breakers
Figure 4.6b DC Power Connection Locations (2 of 2)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
Standard DC Disconnect Switch
The table below includes requirements for the DC conductor size, the number of terminals
available, proper terminal torque, and DC disconnect switch current ratings for the standard DC
disconnect switches provided (no subcombiner) on the PVI 50-100KW. The PE models use the
same DC disconnect switches as the standard models.
NOTE: The torque is different for the grounded and ungrounded terminals on the DC
disconnect switch.
INVERTER
MODEL
WIRE GAUGE
TERMINAL
TORQUE
(GROUNDED)
TERMINAL
TORQUE
(UNGROUNDED)
CURRENT
RATING
2
1/0AWG - 300kcmil
275 in-lbs
500 in-lbs
400A
2
1/0AWG - 350kcmil
275 in-lbs
375 in-lbs
600A
NO. OF
TERMINALS
PVI 50KW
PVI 60KW
PVI 75KW
PVI 85KW
PVI 100KW
Table 4.7 DC Disconnect Switch Conductor Size and Torques
Fused DC Subcombiner
The table below includes requirements for the DC conductor size, the number of terminals
available and proper terminal torque for the fused DC subcombiner options on the PVI 50-100KW.
NOTE: The torque is different for the grounded and ungrounded terminals on the fused
DC subcombiner.
FUSE CURRENT RATING
FUSE
QUANTITY
NO. OF
TERMINALS
(per Fuse)
WIRE GAUGE
TERMINAL
TORQUE
(GROUNDED)
TERMINAL
TORQUE
(UNGROUNDED)
40A, 50A, 60A
6, 8
1
6AWG - 2AWG
275 in-lbs
45 in-lbs
70A, 80A, 90A, 100A
2, 4, 6
1
6AWG - 1/0AWG
275 in-lbs
100 in-lbs
110A, 125A, 150A, 175A, 200A
2, 3, 4
1
2AWG - 350kcmil
275 in-lbs
375 in-lbs
225A, 250A
2
2
2AWG - 350kcmil
275 in-lbs
275 in-lbs
Table 4.8 Fused DC Subcombiner Conductor Size and Torques
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
DC Breaker Subcombiner
The table below includes requirements for the DC conductor size, the number of terminals
available and proper terminal torque for the fused DC subcombiner options on the PVI 50-100KW.
NOTE: The torque is different for the grounded and ungrounded terminals on the DC
breaker subcombiner.
BREAKER CURRENT RATING
BREAKER
QUANTITY
NO. OF
TERMINALS
(per
Breaker)
WIRE GAUGE
TERMINAL
TORQUE
(GROUNDED)
TERMINAL
TORQUE
(UNGROUNDED)
40A, 50A, 60A, 70A, 80A, 90A,
100A
110A, 125A, 150A, 175A, 200A
2-8
1
8AWG - 1/0AWG
275 in-lbs
45 in-lbs
2, 3, 4
1
275 in-lbs
275 in-lbs
275 in-lbs
275 in-lbs
225A, 250A, 300A
2
2AWG - 300kcmil
4/0AWG 350kcmil
2/0AWG 250kcmil
275 in-lbs
375 in-lbs
1
2
Table 4.9 Fused DC Subcombiner Conductor Size and Torques
DC Breaker Damage
When tightening the DC breaker lugs use a wrench (positioned as shown below) to prevent rotation
of the lug while the connection is being torqued. This method must be used when the wires are
installed, inserted and mechanically torqued. This method helps prevent damage to the breaker
housing.
Figure 4.7 – Lug Damage Prevention
4.7 DC Ground Fault Detection and Interruption
The inverter is equipped with an automatic DC Ground Fault Detection and Interruption (GFDI)
circuit. When a single ground fault exceeding the ground fault fuse pickup value is present in the
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
PV array or in the DC wiring to the inverter, the DC GDFI fuse will blow and a ground fault will be
signaled by means of a yellow LED and a message on the front LCD display.
DC Ground Fault Current Pickup
PVI 50KW
PVI 60KW
PVI 75KW
PVI 85KW
PVI 100KW
2 Amps (PN: Bussmann KLM-2,
2A DC, 600 VDC rated)
REPLACE ONLY WITH SAME
MAKE/MODEL
Table 4.10 – DC GFDI Specifications
WARNING: In the event of a ground fault, DO NOT TOUCH any equipment (including,
but not limited to: the inverter, the PV array disconnect switch, the PV array combiners,
the PV panels, the PV racking system). Immediately contact the installer or another
qualified person to locate and repair the source of the ground fault. Be aware that
normally grounded conductors and equipment may be energized and may pose a
significant shock and / or fire hazard.
WARNING: If the GFDI fuse blows upon connection of one or more combined strings, a
ground fault in the array must be located and eliminated before proceeding. The DC
ground fault is eliminated when the GFDI fuse is replaced and remains intact. Failure
to obey these instructions may cause the grounded conductor to rise to potentially
unsafe voltage levels.
WARNING: Even when the DC disconnect switch is in the off position, the ungrounded
DC conductor leading up to the DC disconnect switch will remain energized on the PV
side as long as the PV modules are in daylight. The inverter side of the DC disconnect
switch will also remain energized after the disconnect switch has been shut off until 60
seconds after the LEDs turn off, as the DC bus capacitors in the inverter discharge.
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GFDI Fuse Holder
(Fuse Holder F3)
Figure 4.8 Location of GFDI Fuse
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
4.8 Lightning and Surge Protection
The inverter is designed with certain protections against voltage surges in accordance with IEEE 1547.
The DC inputs are equipped with IEC 61643-1/-11 Class II, EN 61643-11 Type 2 surge protection
devices (SPD). The SPD helps protect the inverter from surges by creating a temporary low
impedance path to ground. On the DC input, separate surge paths exist from positive (+) to ground
and negative (-) to ground. Each path is made by a separate insert within the SPD. A red indicator
flag will mark that an insert requires replacement. The SPD’s can are installed inside the DC
disconnect switch. Added protection and proper grounding provisions will help protect against utility
surges and surges created by indirect lightning strikes. In some instances surge and lightning can
damage the equipment. Please review the warranty section for details.
4.9 Remote Shutdown and Revenue Grade Meter Terminals
The PVI 50-100KW provides dedicated terminal blocks for customer connections for remote
shutdown and an RS-485 based revenue grade meter. The terminal blocks are found on a separate
DIN rail located on the left wall of the inverter as shown below:
DIN rail with Customer
Terminal Blocks
Figure 4.9 Location of Customer Connections
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
The terminal blocks are labeled 9-13 and are wired per the picture and table below:
Location
Terminal Block 12
Connection
Remote Shutdown
Input
Remote Shutdown
Return
Revenue Grade
Meter (RS485A)
Revenue Grade
Meter (RS485B)
Terminal Block 13
Revenue Grade
Meter (RS485-Gnd)
Terminal Block 9
Terminal Block 10
Terminal Block 11
Table 4.11 – Customer Terminal Block Definition
Remote Shutdown Wiring
The PVI 50-100KW inverters feature a remote shutdown input to allow for advanced remote
command and control systems. The input required is an isolated 24VDC signal that is wired to the
terminal blocks on the left panel of the inverter by the installer. Once the signal is activated, the
inverter will slowly ramp down power and then disconnect from the grid. The inverter will not
reconnect until the signal is removed.
Typical
Shutdown
Ramp Time
1 second
Nominal
Input
Voltage
24VDC
Minimum
Input
Voltage
21.6VDC
Maximum
Input
Voltage
26.4VDC
Minimum
Current
Capability
100mADC
Terminal
Wire Size
26 – 14AWG
Table 4.12 – Remote Shutdown Specifications
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
5 Commissioning the Inverter
Before commissioning, ensure that the inverter is properly secured to the mounting structure and
that all power and grounding connections are made to ensure that the inverter is ready to power
up.
NOTE: Make sure all tools, parts, etc. are removed from the inverter cabinet, DC and
AC disconnect switches, and around the vicinity of the inverter before turning on.
WARNING: Make a final check of all AC and DC power and grounding wiring at
the inverter and within the system before turning the inverter on.
NOTE: With the PV modules connected and inverter disconnect switches still off,
perform a final check of the PV voltage and polarity using a digital volt meter by probing
the positive (+) and negative (-) PV connections.
NOTE: Verify clockwise AC phase rotation for L1, L2, L3 using a phase rotation meter.
5.1 Turning on the Inverter
WARNING: The inverter may only be turned on by trained and qualified personnel
only. Before attempting to operate the inverter, please read the entire
manual.
1. Turn on the dedicated three-phase interconnection circuit breaker or disconnect switch at
the system’s point of interconnection.
2. Turn on the inverter’s AC disconnect switch.
3. Turn on the inverter’s DC disconnect switch.
4. Watch the LED indicators for initialization (green and red LEDs on), then a slow blinking
green LED followed by a faster blinking green LED. Watch the LCD display for prompts and
system status.
5. Listen for contactor closing (inverter on-line).
6. Listen for slight 60 Hz hum (transformer on-line).
7. Following the blinking green LED and high frequency switching sound you should see a solid
green LED. This confirms that the inverter is operating normally. The LCD display will show
the AC Power (PAC) and Energy (EAC).
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5.2 Operation
The control electronics and DSP will be active as soon as DC (PV) voltage reaches 245 VDC. The
inverter will go on-line with the utility/building 3-phase grid when the DC voltage first exceeds 400
VDC (strike voltage). Next, the inverter will load the array, bringing the DC voltage down from 400
VDC. Once there is enough PV power to back-feed the grid, the inverter will produce power
according to what is being delivered by the PV array.
There is a 24 VDC power supply inside the inverter. This supply is powered from the PV array and
begins operation when the voltage is above 250 VDC. 24 volts is required for the display, control
relays, GFDI circuits, SolrenView, and the SolrenView AIR and Switch options.
5.3 Turning Off the Inverter
1. Use the SolrenView HMI keypad to temporarily disable the power output by pressing and
holding the ESCAPE button for two seconds.
2. Turn off the inverter’s DC disconnect switch.
3. Turn off the inverter’s AC disconnect switch.
4. Wait at least one minute for the capacitor bank to discharge before restarting the
inverter.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
6 Inverter Control and Communications” in the PVI 50-100
Every Solectria Renewables commercial inverter includes a SolrenView gateway integrated into the
inverter door. This device performs multiple functions including control, monitoring and data
logging.
From the inverter a user can configure, monitor and control the inverter using a human-machine
interface (HMI). This HMI consists of the LCD display, four buttons, and LED indicators for power,
ground fault, and error.
Figure 6.1 – SolrenView Gateway HMI (Front)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
The back side of SolrenView gateway, which can only be physically accessed when the inverter
door is open, provides connectivity to data monitoring systems. Solectria Renewables’ own
SolrenView.com data monitoring system can be interfaced using Ethernet over twisted pair. Thirdparty monitoring systems can be connected to the inverter using Modbus RTU protocol (RS-485.)
WARNING: SolrenView gateway connections must be made by qualified personnel only.
To reduce the risk of electric shock, you should never attempt to open the inverter, DC,
or AC enclosure doors, or perform any service or troubleshooting without prior training.
Before attempting to service or troubleshoot the inverter, please read the entire
manual.
Figure 6.2 – SolrenView Gateway
Data Monitoring Connectivity (Back)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
LED Indicators
The LED indicators mounted on the front left of the inverter enclosure just above the LCD screen
allow the installer and user to see the current status of the inverter.
CAUTION
RISK OF ELECTRICAL
SHOCK
NORMALLY
GROUNDED
CONDUCTORS MAY
BE UNGROUNDED
AND ENERGIZED
WHEN A GROUND
FAULT IS INDICATED
Power
Ground Fault
Error
Figure 6.3 – LED Indicators at Normal Status
The basic LED indicator statuses are as follows:
For other LED indications please contact Solectria Renewables Customer Support.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
WARNING: If the yellow Ground Fault indicator is lit then normally grounded
conductors may be ungrounded and energized. Do not touch the inverter as there
is a risk of electrical shock. For maintenance, please contact Solectria Renewables
or an authorized installer by visiting http://www.solectria.com or by calling +1-978683-9700.
6.1 Button Descriptions
The SolrenView HMI is controlled by four buttons that are integrated into the inverter door. These
buttons are operated by momentarily pushing the center of the button.
The buttons perform the following functions:
ESCAPE
To move up a level from the current menu.
To cancel changing a data value.
Hold for two seconds to STOP or START the inverter
from the Main Display
UP
To scroll up within the individual menu items.
To increase a data value.
DOWN
To scroll down within the individual menu items.
To decrease a data value.
ENTER
To enter into the selected menu.
To begin to edit a data value.
To accept a data value.
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6.2 Main Display
Figure 6.4 Main Display
During normal inverter operation the Main Display shows AC Energy (Eac) and AC Power (Pac).
The display updates every few seconds with new data from the inverter. Units are dynamically
displayed based on the energy and power levels.
6.3 Accessing the Menu
From the Main Display press the ENTER button to access the menu.
Figure 6.5 Main Menu
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
6.4 Navigating the Menu Structure
The Main Menu allows the user to configure, monitor and control inverter functions.
The selected menu option is shown with an arrow on the left. Please note that the display only
shows two menu options at a time and will scroll to show the other options.
Press the DOWN or UP button to change the selected menu option, as indicated by the arrow.
Press the ENTER button to activate the selected function or submenu.
Hint: All menus wrap around. Pressing the UP button when the at the top of a menu will select
the bottom-most menu option. Pressing the DOWN button when at the bottom of a menu will
select the top-most menu option.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
6.5 Displaying Inverter Measurements
1. From the Main Menu select the Measurements function and then press the ENTER button.
2. The display will show the AC Energy readout:
Figure 6.6 – Measurements Function
3. Press the DOWN or UP buttons to display different measurement values.
4. Press the ESCAPE button to return to the Main Menu.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
The following table summarizes the measurements available:
AC Energy
AC Power
AC Voltage
AC Frequency
AC Current
DC Current #1-2
DC Current #3-4
DC Current #5-6
DC Current #7-8
DC Voltage
Apparent Power
Reactive Power
Reactive Power Avail.
React. Energy (+)
React. Energy (-)
Int. Temp Sensor 1
Int. Temp Sensor 2
Int. Temp Sensor 3
Cumulative AC Energy (kWh)
AC Power output (W)
AC Voltage, Three-phase (V)
AC Frequency (Hz)
AC Current, Three-phase average (A)
DC Current(A) #1- 2 (Only available with SolZone)
DC Current(A) #3-4 (Only available with SolZone)
DC Current(A) #5-6 (Only available with SolZone)
DC Current(A) #7-8 (Only available with SolZone)
DC Voltage (V)
Apparent AC Power output (VA)
Reactive AC Power output (VAr)
Available Reactive AC Power output (Var)
Cumulative reactive energy generated (kVArh)
Cumulative reactive energy received (kVArh)
Internal temperature Sensor #1 ( C)
Internal temperature Sensor #2 ( C)
Internal temperature Sensor #3 ( C)
NOTE: Data for measurements is only available when inverter is operating.
NOTE: DC Currents 1-8 are only available if the SolZone sub-array monitoring
option is installed.
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6.6 Controlling the Inverter
Many inverter functions can be controlled through the HMI under the Set Inverter menu option.
The power can be temporarily disabled or curtailed. Third-party RS-485 Modbus settings can be
viewed and modified, including inverter id and baud rate. Inverter AC voltage and frequency trip
settings can be viewed and modified.
The following table summarizes the control functions:
Power Disable
Inverter ID
Baud Rate
Vac Very High
Vac High
Vac Low
Vac Very Low
Fac Low
Fac Very Low
Fac High
Limit Power
Restart Delay
Password
Temporarily disables the AC output of the inverter
Serial port address/ID of the inverter
Serial port baud rate (19200 or 9600)
AC Voltage Critical High Trip Setting
AC Voltage High Trip Settings
AC Voltage Low Trip Settings
AC Voltage Critical Low Trip Setting
AC Frequency Low Trip Setting
AC Frequency Critical Low Trip Setting (not adjustable)
AC Frequency High Trip Setting (Not adjustable)
AC Power Curtailment (%)
UL Reconnect wait time in minutes/seconds
4-digit pin code to protect settings
NOTE: Data for many functions is only available when inverter is operating.
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6.7 Stopping and Starting the Inverter
WARNING: Before conducting any maintenance or service on the PV System the
inverter disconnect switches must be set to the “OFF” position and the absence of
voltage must be verified by qualified personnel. Do not rely on HMI functions to stop
the inverter as a reset might cause the inverter to start unexpectedly.
Quick Stop and Start
The Inverter can be temporarily stopped so that it ceases to export power to the grid. Hold down
the ESCAPE button for two seconds to temporarily stop the inverter if it is running. Likewise, hold
down the ESCAPE button for two seconds to initiate inverter starting if it is stopped.
Alternatively, the inverter can be started and temporarily stopped through the menu.
1. From the Main Menu select the Set Inverter function and then press the ENTER button.
2. The Power Stopped status will be displayed, indicating the current status.
3. Press the ENTER button. The display prompt will change to Power Stop and the setting can be
modified. Press the DOWN button to change the setting to Yes.
4. Press the ENTER button to accept the setting. The inverter will shut down.
NOTE: To start the inverter, change the Power Stop setting in step 3 to No instead
of Yes.
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6.8 Accessing Password Protected Functions
Certain menu functions can only be accessed after the four digit password (or PIN) is entered
through the HMI interface.
1. Select the Set Inverter submenu from the Main Menu.
2. Select the Password function at the bottom of the Set Inverter submenu.
Hint: This option can quickly be accessed by pressing the UP button from the top of the Set
Inverter submenu, as the menu wraps around.
3. The Password screen will appear.
4. Press the ENTER button to begin entering the default password (PIN).
5. Specify each of the four PIN digits one at a time. Press the UP button to increment the digit.
Press the DOWN button to decrement the digit. Press the ENTER button to accept the digit.
Press the ESCAPE button to cancel PIN entry at any point. When the fourth digit is entered the
PIN entry will be evaluated and the “Password Correct” message will flash if the PIN is verified.
6. The Password screen will be shown again. Press ESCAPE twice to return to the Main Menu.
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6.9 Changing the Inverter Password
The inverter password ensures that unauthorized users are not able to access certain menu
functions. The default password (0000) should be changed on commissioning. Please use a
password that you can easily remember. Solectria Renewables does NOT have a master
password to reset the unit.
1. Enter the inverter password (PIN) as shown in section 6.9.
2. Once the current password has successfully been entered the password can be changed by
pressing the ENTER button from the Password screen. (Second time allows changing the PIN.)
3. Specify each of the four password digits one at a time. Press the UP button to increment the
digit. Press the DOWN button to decrement the digit. Press the ENTER button to accept the
digit. Press the ESCAPE button to cancel password entry. When the fourth digit is entered the
password entry will be changed.
4. The Password screen will be shown again. Press ESCAPE twice to return to the Main Menu.
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6.10 Changing Voltage and Frequency Trip Settings
The inverter is designed to operate within certain voltage and frequency ranges, as specified by
the utility. When the inverter senses that the inverter and/or grid is outside any of these ranges
the inverter ceases exporting power and disconnects from the grid. This action is referred to as an
inverter trip.
Inverter trip settings that can be reviewed include:













Vac Very High Voltage
Vac Very High Trip Time (not changeable)
Vac High Voltage
Vac High Voltage Trip Time
Vac Low Voltage
Vac Low Voltage Trip Time
Vac Very Low Voltage
Vac Very Low Voltage Trip Time (not changeable)
Fac Low Frequency
Fac Low Frequency Trip Time
Fac Very Low Frequency (not changeable)
Fac Very Low Frequency Trip Time (not changeable)
Fac High Frequency (not changeable)
NOTE: Prior to changing trip settings, the password must be entered through the
HMI. See section 6.9 for details on entering the password.
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1. To change trip settings, first select Set Inverter on the Main Menu:
2. Next, select VAC Very High function on the Set Inverter submenu:
3. The VAC Very High function will be displayed. Press ENTER to modify the setting. The
voltage value will flash, indicating that it can be changed. Press the DOWN and UP buttons to
change the voltage setting.
4. Press the ENTER button to accept the voltage setting change.
5. If the trip time is adjustable, it will flash to indicate that it can be changed.
Press the DOWN and UP buttons to change the trip time setting.
6. Press the ENTER button to accept the trip time setting change.
7. Press the DOWN button to step to the next trip setting (VAC High).
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8. Repeat steps 3–6 for each trip setting to be modified.
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6.11 Establishing Ethernet Connectivity
Before SolrenView web-based monitoring can function the inverter must be networked to the
Internet. Customers ordering the SolrenView AIR 3G Router have network connectivity turned on
in the factory; no additional steps are required.
WARNING: Before conducting any maintenance or service on the PV System the inverter
disconnect switches must be set to the “OFF” position and the absence of voltage must
be verified by qualified personnel. Do not rely on HMI functions to stop the inverter as
a reset might cause the inverter to start unexpectedly.
To connect the inverter to the network in preparation for using SolrenView web-based monitoring:
1. Locate the Ethernet port on the back of the SolrenView gateway.
Ethernet port
Figure 6.7 – Ethernet Connection
to the back of the SolrenView gateway.
2. Install a CAT5, CAT5e, or CAT6 networking cable between the SolrenView gateway and
router/switch/firewall. If molded cables cannot be used we suggest using a network cable
tester to ensure cable and crimp quality.
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NOTE: The green link and yellow activity LEDs only light when the SolrenView
gateway is powered.
6.12 Setting up TCP/IP Networking
Connection to the Internet and to the SolrenView web-based monitoring service requires
functioning TCP/IP protocol. This protocol runs over twisted pair Ethernet wiring and requires
certain connections to properly operate. See Section 6.11 or details on establishing Ethernet
connectivity.
By default the SolrenView gateway should automatically configure TCP/IP address from a network
router by using the DHCP protocol. In certain cases it may be necessary to override these settings
or to manually configure the TCP/IP settings.
NOTE: The network router must be 10T capable.
NOTE: Customers using SolrenView AIR do not need to setup TCP/IP as this is done
in the factory prior to shipping the inverter.
6.13 Viewing Current TCP/IP settings:
1. Select the Info function on the Main Menu and the press ENTER button.
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2. Information on the inverter will be displayed including the IP, gateway, and netmask
settings. Press the ENTER button to hold the display on the item of interest.
In the above example, the IP address, gateway and netmask values are being automatically
being set through the DHCP service. The exact values displayed will depend on the
configuration of the network, but typically are in one of three ranges:
10.0.0.0
192.168.0.0
172.16.0.0
–
–
–
10.255.255.255
192.168.255.255
172.31.255.255
3. If the network is working on the Ethernet protocol level, but the SolrenView is unable to
obtain settings through the DHCP service the following will typically be displayed:
If the network is not working on the Ethernet protocol level, such as if the twisted pair Ethernet
cable is not plugged in, the following will be displayed:
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6.14 Manually Configuring Network Settings
To manually configure network settings:
1. Select Config from the Main Menu and press ENTER.
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2. Select LAN from the Config Menu and press ENTER.
3. Select the DHCP function and press ENTER to edit this setting.
4. Press the DOWN button to turn DHCP Mode Off and press ENTER to save this setting.
5. The DHCP Mode setting will now show Off.
6. Press the DOWN button to access the Static IP setting.
7. Press ENTER to modify the Static IP value.
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8. Specify each of the four octet values (0-255), one at a time. Press the UP button to
increment the octet. Press the DOWN button to decrement the octet. Press the ENTER
button to accept the octet. Press the ESCAPE button to cancel entry at any point. When
the fourth octet is entered the entry will be saved.
9. Press the DOWN button to access the Gateway setting. Change in the same manner that
the Static IP was modified.
10. Press the DOWN button to access the Netmask setting. Change in the same manner that
the Static IP was modified.
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6.15 Automatically Configuring Network Settings
When shipped from the factory, the SolrenView gateway uses DHCP to configure the TCP/IP
settings. If the gateway has been changed to use static IP address the following instructions will
explain how to turn on DHCP.
To configure the SolrenView gateway to use DHCP:
1.
Select Config from the Main Menu and press ENTER.
2. Select LAN from the Config Menu and press ENTER.
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3. Select the DHCP function and press ENTER to edit this setting.
4. Press the DOWN button to turn DHCP Mode On and press ENTER to save this setting.
5. The DHCP Mode setting will now show On.
6.16 Setting Fallback IP Address
When the SolrenView gateway is set to use DHCP, but is unable to acquire an IP address lease, it
will “fallback” to using a specified IP address after a few seconds.
1. To specify a fallback IP, first select Config on the Main Menu and press ENTER.
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2. Select LAN from the Config Menu and press ENTER.
3. Confirm that the DHCP Mode setting shows On. The Fallback IP is only available when
DHCP is turned on.
4. Press the Down button to show the Fallback IP setting.
5. To change the Fallback IP, press the ENTER button.
6. Specify each of the four octet values (0-255), one at a time. Press the UP button to
increment the octet. Press the DOWN button to decrement the octet. Press the ENTER
button to accept the octet. Press the ESCAPE button to cancel entry at any point. When
the fourth octet is entered the entry will be saved.
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7. Press the DOWN button to show the Gateway IP setting.
8. To change the Gateway, press the ENTER button.
9. When DHCP is on, the Gateway can either be autodetected or manually specified.
10. To configure the SolrenView gateway to autodetect the gateway from the DHCP server,
select the “Autodetect” option in using the HMI. Autodetect is the special gateway value
of 0.0.0.0.
11. To configure the SolrenView gateway to use a manual gateway, specify each of the four
octet values (0-255), one at a time. Press the UP button to increment the octet. Press the
DOWN button to decrement the octet. Press the ENTER button to accept the octet. Press
the ESCAPE button to cancel entry at any point. When the fourth octet is entered the entry
will be saved.
12. Press the DOWN button to access the Netmask setting. Change in the same manner that
the Fallback IP was modified.
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6.17 Enabling SolrenView Web-based Monitoring
Before SolrenView web-based monitoring can function the inverter must be networked to the
Internet, see sections 6.12 through 6.15 for more details.
As explained in section 6, data logging is one of the main functions of the SolrenView gateway. This
option is turned on with the SRV Mode setting. Once enabled, the SolrenView gateway will
periodically update various operational values and send this data to the SolrenView web-based
monitoring service.
If SRV Mode is turned on and the gateway is unable to transfer data to the monitoring service then
data will accumulate in a queue on the SolrenView gateway. This queue is stored in non-volatile
flash memory. After a few weeks the data queue will become full and the oldest data will be lost,
so it is important to establish Internet connectivity soon after the inverters are commissioned.
NOTE: If a third party monitoring service is installed, SRV mode should be set to off.
NOTE: Enabling SRV Mode when the SolrenView.com data monitoring service has
not been purchased will result in unnecessary wear and tear on the SolrenView
gateway.
1. To enable SolrenView.com data monitoring, first select Config on the Main Menu and press
ENTER:
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2. Next, select SRV Mode function on the Config Menu and press ENTER:
3. The SRV Monitoring function will be displayed. Press ENTER to modify the setting.
Press the DOWN button to change the setting to On.
4. Press the ENTER button to accept the setting change.
6.18 Viewing and setting the Date/Time
When the SolrenView web-based monitoring service is purchased and functioning, it is normally
not necessary to set or maintain the time on the inverter. The time will automatically be set and
adjusted based on the inverter’s time-zone.
NOTE: The date is only editable if SRV Mode is off.
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To view the date and time:
1. First select Config on the Main Menu and press ENTER.
2. Select the Date/Time option on the Config Menu and press ENTER.
3. The current date will be displayed. If the date can be modified an arrow will appear just
before the month. Note: The date is only editable if SRV Mode is off. When SRV Mode is
on, the date and time is automatically set.
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4. Press the ENTER button to begin changing the date. The month will flash, indicating that
this portion of the date can be changed with the buttons. Press the UP button to increment
the month and the DOWN button to decrement the month. Press the ENTER button to
accept the month. Press the ESCAPE button to cancel and return to the menu.
5. The day will flash, indicating that this portion of the date can be changed with the buttons.
Press the UP button to increment the day of the month and the DOWN button to
decrement the day of the month. Press the ENTER button to accept the day value. Press
the ESCAPE button to cancel and return to the menu.
6. The year will flash, indicating that this portion of the date can be changed with the buttons.
Press the UP button to increment the year and the DOWN button to decrement the year.
Press the ESCAPE button to cancel and return to the menu. Press the ENTER button to
accept the year value and save the date to the SolrenView unit’s memory.
7. After modifying the date, the new date will be shown. Press the DOWN button to
proceed to the time.
8. Press the ENTER button to begin changing the time. The format is HH:MM:SS and hours
are shown in 24 hour format. The hour will flash, indicating that this portion of the time
can be changed with the buttons. Press the UP button to increment the hour and the
DOWN button to decrement the hour. Press the ENTER button to accept the hour value.
Press the ESCAPE button to cancel and return to the menu.
9. The minute will flash, indicating that this portion of the time can be changed with the
buttons. Press the UP button to increment the minute and the DOWN button to decrement
the minute. Press the ENTER button to accept the minute value. Press the ESCAPE button
to cancel and return to the menu.
10. The second value will flash, indicating that this portion of the time can be changed with the
buttons. Press the UP button to increment the seconds and the DOWN button to
decrement the seconds. Press the ESCAPE button to cancel and return to the menu. Press
the ENTER button to accept the second value and save the time to the SolrenView unit’s
memory.
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6.19 Rebooting the SolrenView Gateway
If the SolrenView Gateway cannot communicate over the Internet or is not updating inverter data
it may need to be rebooted. To reboot SolrenView gateway:
1. First select Config on the Main Menu and press ENTER:
2. Select the Reboot option from the menu and press ENTER.
3. The Reboot monitor prompt will be shown. Press the ENTER button to reboot the
SolrenView gateway.
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6.20 Resetting the SolrenView Gateway to Factory Defaults
It may be necessary to reset the SolrenView gateway to factory defaults. This does not reset the
inverter core, nor shutdown the inverter for any period of time.
NOTE: Resetting the SolrenView gateway will also clear events, revenue-grade KYZ
counters and SolrenView.com data queue. Caution should be used with this
function to avoid data loss.
To reset the SolrenView gateway:
1. First select Config on the Main Menu and press ENTER.
2. Select the Reset All option from the menu and press ENTER.
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3. A message warning that the SolrenView gateway is about to be set to factory defaults is
shown. Press the ESCAPE button to cancel the reset.
4. Select the Yes option under Clear settings to reset the SolrenView gateway to factory
defaults. The Reset Storage screen will appear for a moment.
6.21 Inverter Counts and Logs
The inverter keeps track of various events and errors through error logging and cumulative
counters.
Error logs are a record of events (changes of state), with the earliest event shown first. There are
a total of 30 log entries available and newer entries overwrite older entries. Each entry in the log
is time stamped in MM/DD/YY format.
Error counts display cumulative counters for each supported event/error, with the highest error
count shown first.
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6.22 Displaying Error Counts
1. Select Inv Events from the Main Menu and press ENTER.
2. Select Err Counts from the Inv Events Menu and press ENTER.
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3. The Error Counts are displayed in order of occurrence, with the most frequent error
displayed at index position 1. In this example the most frequent error is Contactor
Failure; two contactor fail events were logged with the last one logged on Jan 02, 2013 at
7:12 am.
The data format is index number, date/time and occurrences on the first line. The second
line is the type of the event.
4. Press the DOWN button to see the next Error Count entry. Continuing our example, the
second most frequent error is Lost Frequency lock, which occurred once on Jan 01, 2013
at 7:10 am.
5. If no Count data is recorded, the date and time that the Counts were last cleared is
displayed.
6. Press the ESCAPE button to return to the Inv Events menu.
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6.23 Displaying Error Logs
1. Select Inv Events from the Main Menu and press ENTER.
2. Select Err Logs from the Inv Events Menu and press ENTER.
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3. The most recent Error Log entries is displayed at index position 1.
The data format is index number, date/time and event state on the first line. When the
Error first is asserted the event state is shown as “On”. When the Error ceases the event
state is shown as “Off”. The second line is the type of the event.
4. Press the DOWN buttons to see the next event stored in the log.
In this example, the inverter asserted a Lost Freq Lock error on Jan 01, 2013 at 7:10 am
and ceased to assert the Lost Freq Lock error on Jan 01, 2013 at 7:11 am.
5. If no Events are recorded, the date and time that the Events were last cleared is displayed.
6. Press the ESCAPE button to return to the Inv Events menu.
Hint: Press the UP button from Error log index 1 to see the most recent Error logged.
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6.24 Clearing Error Counts or the Log
1. Select Inv Events from the Main Menu and press ENTER.
2. Select Clear from the Inv Events Menu and press ENTER.
The Clear History prompt will be shown. Select the type of history to be cleared by
pressing the UP and DOWN buttons. Press ENTER to clear the history based on one of
these settings. Press the ESCAPE button to cancel.
None: History is not cleared.
Err Counts: Clears the Error Counts only.
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Err Log: Clears the Error Log only.
All: Clears the Error Counts and Error Log.
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List of Logged Events
The following events are logged and counted:

























AC Contact Open
AC Frequency High
AC Frequency Low
AC Islanding
AC Voltage High
AC Voltage Low
Contactor Err
CT Failure
DC GND FAULT
DC Voltage High
Desat Error
DMGI Overtemp
Fan Life Reached
IGBT Overtemp
Lost Freq Lock
MAG Fail
Min Vmpp Reached
MOV Fault
NTC Failure
Open Phase
Power Derated
Power stage failure
PS Wake Fail
VDC Ctrl. Fail
Vsense Err
List of Displayed Events
The following events are frequently encountered or events that only occur during installation:






AC Disconnect switch
DC Disconnect switch
PS Config Fail
Reconnecting
Reverse phase & restart PVI!
Wait for grid
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6.25 HMI Menu Structure
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7 Troubleshooting and Maintenance
This section provides guidelines for troubleshooting and routine maintenance of your inverter.
WARNING: These troubleshooting and maintenance instructions are for use by qualified
personnel only. To reduce the risk of electric shock, you should never attempt to open
the inverter, DC, or AC enclosure doors, or perform any service or troubleshooting
without prior training. Before attempting to service or troubleshoot the inverter, please
read the entire manual.
7.1 Inverter Messages
Although the inverter is designed for many years of uninterrupted power production, there may
be instances where messages are displayed on the LCD screen. For ease of diagnostics most
messages are displayed as an error message. Examples of Error Messages, Descriptions, and
Corrective Actions are found in this section.
Pac: XXXX W
Power Derating
Pac: XXXX W
AC Voltage High
Pac: XXXX W
AC Voltage Low
Pac: XXXX W
AC Freq High
Pac: XXXX W
AC Freq Low
Contactor Fail
978-683-9700
CT Failure
978-683-9700
Thermal disc.
978-683-9700
DOCR-070233-D
The inverter is in derating mode. Can
be caused by high input power, high
temperature, AC line impedance.
The AC grid voltage is exceeding the
high limit.
The AC grid voltage is less than the
low limit.
The AC grid frequency is exceeding
the high limit.
The AC grid voltage is less than the
low limit.
The AC contactor or sensing circuit
has failed
Check string sizing, ambient temp, fans
operating, vents are clear, AC wire sizing
Measure the actual VAC compared to the LCD
display VAC. If VAC is greater than acceptable
limits, the inverter will restart when VAC
returns to normal range.
Measure the actual VAC compared to the LCD
display VAC. If VAC is less than acceptable
limits, the inverter will restart when VAC
returns to normal range.
If possible measure the frequency or contact
local utility provider. If AC frequency is above
acceptable limits, the inverter will restart
when frequency returns to normal range.
If possible measure the frequency or contact
local utility provider. If AC frequency is below
acceptable limits, the inverter will restart
when frequency returns to normal range.
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
The internal current monitoring has
failed
Turn the DC and AC off, restart the inverter.
The inverter may need to be inspected and
serviced by an authorized service provider.
The AC contactor is open when it is
being commanded to be closed
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
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NTC Failure
978-683-9700Pac:
The internal temperature sensor has
failed.
Turn the DC and AC off, restart the inverter.
The inverter may need to be inspected and
serviced by an authorized service provider.
IGBT Overtemp
978-683-9700
The internal temperature is exceeding
operational limits
Turn the DC and AC off, let the inverter cool
to ambient temperature and restart the
inverter.
Desat Error
978-683-9700
Internal component sensing fault
Turn the DC and AC off, restart the inverter.
The inverter may need to be inspected and
serviced by an authorized service provider.
DC GND Fault
Check DC Wiring
A ground fault has been detected in
the PV array
DO NOT TOUCH any equipment (including, but
not limited to: the inverter, the PV array
disconnect switch, the PV array combiners, the
PV panels, the PV racking system). Immediately
contact the installer or another qualified
person to locate and repair the source of the
ground fault.
Wait for the inverter to restart
VAC Low
Reconnecting
Pac: XXXX W
Waiting for grid
The inverter experienced an
abnormal AC voltage condition and is
in the 5 minute reconnect wait
Grid voltage may not be present
Check for grid voltage on all phases
Reverse phasing
& restart PVI!
The VAC grid connection phasing does
not match the inverter’s phasing
Swap two of the phase wire positions at the
inverter AC wiring terminals in the AC
disconnect switch, then restart
Pac: XXXX W
Min Vmpp reached
The power point tracking has been
reached
The inverter will hold the DC voltage at this
level until Vmpp increases.
AC Contact Open
978-683-9700
The AC contactor is open when it is being
commanded to be closed
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
Vsense Err
978-683-9700
An internal failure of the voltage
sensing circuit has occurred
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
Open Phase
978-683-9700
One of the AC phases is not present at
the inverter
Verify that there is AC voltage on all phases at
the inverter and all fuses are intact.
Pac: XXXX W
PS Fail
An internal failure of the power stage
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
Pac: XXXX W
Lost Freq Lock
An internal failure of the voltage
sensing circuit
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
Pac: XXXX W
VDC Ctrl Fail
The DC voltage is outside of the
regulation specifications
Turn off the inverter and contact Solectria
Renewables. The inverter may need to be
serviced by an authorized service provider.
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7.2 Troubleshooting
WARNING: These troubleshooting instructions are for use by qualified personnel only.
To reduce the risk of electric shock, you should never attempt to open the inverter, DC,
or AC enclosure doors, or perform any service or troubleshooting without prior training.
Before attempting to troubleshoot the inverter, please read the entire manual.
Steps to Perform when PV system not functioning:
 Check inverter LED indicator status and LCD screen for inverter status and error messages
 Check to ensure that inverter is connected to AC power
 Check for clockwise phase rotation of AC power connections
 Check to ensure that DC (PV) input is connected
 Verify proper polarity of DC (PV) positive (+) and negative (-) input pairs
 Verify PV string Maximum Power Point Voltage at design high temperature and PV string
Open Circuit Voltage at design low temperature is compatible with inverter input voltage
specifications.
 Contact installer or Solectria Renewables if malfunction persists
If contacting Solectria Renewables for assistance, please provide:
1. Inverter Model Number/Part Number
2. Inverter Serial Numbers
3. Short Description of Problem (LCD messages, when problem started, how often problem
occurs, under what conditions the problem occurs)
4. Design Information (PV modules, string sizing, output power, short-circuit current and
open circuit voltage string layout)
See Appendix for Solectria contact information.
Some specific problems that can be identified quickly:
GFDI Problem: If the LED indicators show a ground fault problem but the GFDI fuse is not blown
then a ground fault in PV array or wiring must be found. If the LED indicators show that the GFDI
fuse is blown, the fault in PV array or wiring must be found and GFDI fuse replaced. For fuse
replacement, see section 4 “Power, GFDI and Error LED Indicators”. GFDI fuse must be replaced
with identical make/model. Do not use larger amperage fuse.
Inverter over-heating and power de-rating: If the power output is lower than normal and there is
an LED indication of power de-rating due to high temperature, check the following
 Is the ambient air temperature above 130°F (55oC)?
 Is the intake (front) louver grill or output (rear or bottom) visibly blocked?
Unit overheating, power de-rating, or unit not putting out power
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



Check the insect screens in the front louver grill on the main enclosure door for clogging
from dust, pollen and debris. The louver/grill can be removed with 16 Philips screws
holding it on and the insect screen can be cleaned or replaced. See Section 7.4 about
turning the inverter off before performing this service.
Fan not running, blocked or slow
o Check the fan fuses inside the main enclosure (10A AC).
o Check the fan relay inside the main enclosure.
o Check the fan and make sure it spins freely.
o See Section 7.4 about turning the inverter off before performing this service.
No grid sensing:
o Grid sensing fuses blown (1A AC or as labeled) inside the main enclosure. Contact
Solectria Renewables (Do not replace fuses, as this represents an abnormal failure).
No LED indications when the sun is shining. If the grid voltage and DC (PV) voltage is present
and no response from inverter is evident:
o Verify AC & DC (PV) voltages are within proper ranges.
o Verify fuses in AC & DC (PV) disconnect switch are good (if equipped with AC fuses
and/or PV sub-combiner).
If it is determined that the unit or any part of the unit should be shipped to Solectria Renewables
for repair or replacement, be sure to get an RMA# from Solectria Renewables and use the same
packing method as when it was shipped to you, or request instruction on packing and/or packing
materials from Solectria Renewables to help insure a safe shipment.
7.3 Preventative Maintenance
WARNING: These maintenance instructions are for use by qualified personnel only. To
reduce the risk of electric shock, you should never attempt to open the inverter, DC, or
AC enclosure doors, or perform any service or maintenance without prior training.
Before attempting to service the inverter, please read the entire manual.
For most installations PM should be performed once every 12 months. If the inverter is installed
in harsh environments the frequency of some items should be increased. Please review the
table below:
Installation
Specifics
Visual inspection
Clean front
screen and rear
louvers
Verify electrical
connections
Verify signal
connections
Inside climate
controlled
Outside covered
Once per 12
months
Once per 12
months
Once per 6 months
Once per 12
months
Once per 6 months
Once per 12
months
Once per 6 months
Once per 6 months
Once per 6 months
Once per 3 months
Once per 3 months
Once per 6 months
Once per 24
months
Once per 12
months
Once per 12
months
Once per 12
months
Outside
exposed
Outside harsh
environment
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Outside
extremely harsh
environment
Once per 1 month
Once per 1 month
Once per 6 months
Once per 12
months
A harsh environment is defined as any of the following conditions:
 Excessive temperature either hot or cold
 In a desert area with sand or other debris constantly in contact with the inverter
 In an area with excessive pollen or dust
 Indoors if located in a manufacturing area with airborne particles
 Coastal regions exposed to salt water
7.4 Intake Louver Vent Cleaning
WARNING: The intake louver vent can be cleaned only when the inverter is off,
both DC and AC Disconnect switches off and completely locked and tagged out.
Absence of dangerous voltages must be verified by qualified personnel before
performing any service.
Intake louver vent cleaning is recommended at the intervals specified in Section 7.3. Consider
cleaning intake louver vent during the early morning or late evening so little or no energy
generation is lost.
Method 1: Remove the shroud by removing all Philips Pan Head #2 machine screws around the
shroud (sides and top only, do not remove bottom screws), and remove the shroud. Without
removing the vent, use a powerful vacuum and clean entire louver vent/screen.
Method 2: Remove the shroud by removing all Philips Pan Head #2 machine screws around the
shroud (sides and top), and remove the shroud. Next remove the remaining bottom screws holding
the louver vent onto the inverter. Use compressed air from the back (insect screen) side of the
louver vent/screen unit to remove all debris.
Re-assemble putting all screws in LOOSELY first and then tighten snug (do not over-tighten).
7.5 Opening Main Enclosure, DC Disconnect Switch, and AC Disconnect Switch
Normally the main enclosure, DC, or AC disconnect switches will not have to be opened for any
reason by the user. If opening the unit is necessary follow these guidelines:
WARNING: The inverter, DC, and AC Disconnect switches should only be opened up
by authorized and qualified service personnel.
WARNING: If the inverter is outdoors, only open the inverter, DC, and AC
disconnect switches when it is clear and dry outside. As with any electrical system
do not work on it if there is a potential of an electrical storm.
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
WARNING: Both DC and AC disconnect switches must be in the off position and
wait 60 seconds after the LED indicators are off before opening as electrolytic
capacitors on the internal DC “bus” are discharging during this time.
Opening the Main Enclosure
WARNING: The enclosure can only be opened when the inverter is off, both DC and
AC Disconnect switches off and completely locked and tagged out. Absence of
dangerous voltages must be verified by qualified personnel before performing any
service.
1.
2.
3.
4.
5.
Use the SolrenView HMI keypad to temporarily disable the power output by pressing and
holding the ESCAPE button for two seconds.
Switch off DC disconnect switch
Switch off AC disconnect switch
Watch until all LED indicators have been off for 60 seconds to allow capacitors to discharge
Open handle on door (use key if locked)
Before closing the main enclosure always check for any signs of problems such as corrosion, loose
parts, insect or animal infestation, excessive dirt/dust or over heated or deformed/aged-looking
parts.
Opening the DC Disconnect Switch Enclosure
WARNING: DC Input wiring from the array may be energized even with inverter
off and DC Disconnect Switch open.
1.
2.
3.
4.
5.
6.
Disconnect inverter from DC power from array to ensure that live DC is not entering DC
disconnect switch enclosure.
Use the SolrenView HMI keypad to temporarily disable the power output by pressing and
holding the ESCAPE button for two seconds.
Switch off DC disconnect switch
Switch off AC disconnect switch
Watch until all LED indicators have been off for 60 seconds to allow capacitors to discharge
Remove DC disconnect switch cover door retention screws
Opening the AC Disconnect Switch Enclosure
WARNING: AC output wiring leaving the AC Disconnect Switch Enclosure to point of
interconnect may be energized even with inverter off and AC Disconnect switch
open.
1. Disconnect inverter from AC power at point-of-interconnection to ensure that live AC is not
entering AC disconnect switch.
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
2. Use the SolrenView HMI keypad to temporarily disable the power output by pressing and
holding the ESCAPE button for two seconds.
3. Switch off DC disconnect switch.
4. Switch off AC disconnect switch.
5. Watch until all LED indicators have been off for 60 seconds to allow capacitors to discharge.
6. Remove AC disconnect switch cover door retention screws.
7.6 Fuse replacements
AC Fuses (if equipped)
WARNING: If inverter is equipped with the fused AC disconnect switch, fuses must
only be replaced with 600VAC rated fuses of the same type and rating.
The following table includes current ratings of fuses provided with fused AC disconnect switch
option according to inverter power rating and AC output voltage.
AC Voltage
208V
PVI-50KW
175A
PVI-60KW
225A
240V
480V
600V
150A
110A
110A
200A
110A
110A
Inverter Model
PVI-75KW
PVI-85KW
300A
300A
225A
125A
110A
300A
150A
110A
PVI-100KW
350A
300A
150A
125A
Table 7.1 – AC Disconnect Switch Fuse Specifications
DC Input Fuses (if equipped)
WARNING: If inverter is equipped with the fused PV sub-combiner, fuses in DC
disconnect switch must only be replaced with 600VDC rated fuses of the same type.
Always refer to PV module and combiner fuse ratings and specification before
selecting or replacing fuses.
GFDI fuse
WARNING: Only replace GFDI fuse with Bussmann KLM-2 (2A, 600 VDC rated)
Other Fuses
WARNING: Unless otherwise specified, only replace other fuses with fuses of same
type and rating. See fuse schedule located along inverter enclosure interior right
wall for complete list of fuse ratings and types.
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
8 Product Warranty and RMA Policy
The current warranty and RMA statement for the product is available online at
http://www.solectria.com/support/documentation/warranty-information/grid-tied-inverterwarranty-letter/ . If you do not have access to the internet or to request a copy to be mailed to
you, please contact our Technical Service department 978-683-9700 x 2.
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
9 Technical Data
See Appendix for links to PVI 50-100KW data sheet and the string sizing tool.
Input (DC) from PV array:
WARNING: NEC 690-7 must be followed to calculate the maximum number of PV
modules allowed for a maximum inverter open circuit voltage (OCV) of 600V DC in
extreme cold temperatures for the installation location.
The open circuit voltage of PV modules depends on the cell temperature and the solar
irradiation. The highest open circuit voltage occurs when the PV modules are at the
coldest temperature and in bright sun.
Because the PV modules also have a reduction in voltage at high cell temperatures, you must make
sure the MPPT voltage of the strings will not drop below the minimum inverter DC input voltage in
hot temperature conditions.
Both the maximum open circuit voltage (OCV) when at maximum cold temperatures and
minimum MPPT voltage when at maximum hot temperatures can be calculated for a PV module
using its specification sheet. PV module string sizing can then be used to determine how many
modules can be used in a string. Visit http://www.solectria.com/?page_id=30 to use Solectria
Renewables’ interactive string sizing tool.
9.1 Input DC (PV) Specifications
PVI 50KW
PVI 60KW
PVI 75KW
PVI 85KW
PVI100KW
Unit
Standard Units
Operating voltage range
300-600
VDC
Input voltage MPPT range
300-550
VDC
400V
VDC
Startup Voltage
Maximum operating input current
Low Voltage (LV) Units*
Operating voltage range
Input voltage MPPT range
Startup Voltage
Maximum operating input current
All Units
Maximum open circuit voltage
Absolute Maximum open circuit
voltage
DOCR-070233-D
176
185
211
264
222
285-600
285-550
380V
278
299
314
351
ADC
370
VDC
VDC
VDC
ADC
600
VDC
630
VDC
Page 82 of 92
PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
DC voltage measurement accuracy
DC current measurement accuracy
(SolZone option only)
DC Ground Fault Protection
DC Ground Fault Trip Setting
Maximum backfeed current
DC Subcombiner Options
+/- 2%
+/- 2%
Per UL 1741
2
0
40A – 300A fuses available, 2-8 pole
40A – 300A Breakers available, 2-8 pole
Break load rated, NEMA 3R, Breaks Ungrounded Conductor
600
400A or 600A, Varies by model, see Table 4.6
DC Disconnect switch
DC Disconnect Voltage Rating
DC Disconnect Current Rating
ADC
A
VDC
ADC
*Low Voltage (LV) Units are not CEC listed, contact Solectria for availability
Table 9.1 – DC Input Specifications
9.2 Output AC Specifications
The inverters are designed to feed power into a standard 60Hz, three-phase AC utility service
provided within a facility by a transformer with a rating of not less than the rating of the inverter(s)
connected to it.
The inverter is designed to work with the range of AC voltages for a three-phase service defined by
IEEE 1547-2003 and ANSI C84.1.
Operating AC voltage range
Turn-on AC voltage range
PVI 50KW
PVI 75KW PVI 85KW
88 – 110%
92 – 105%
Operating frequency (Default)
59.3 – 60.5
Continuous Output Power
Continuous Output Current
208VAC
240VAC
480VAC
600VAC
Maximum Output Fault Current
and Duration (Line to Ground)
Frequency measurement
accuracy
AC Voltage measurement
accuracy
AC current measurement
accuracy
AC real power and energy
measurement accuracy
Total Harmonic distortion (THD,
@ full power)
Power Factor, Rated Power
Anti-islanding protection
AC Disconnect switch
AC Disconnect Voltage Rating
AC Disconnect Current Rating
DOCR-070233-D
PVI 60KW
PVI100KW
Unit
Hz
50
60
75
85
100
kW
139
120
60
48
167
144
72
58
208
180
90
72
236
205
102
82
278
240
120
96
Arms
Arms
Arms
Arms
5.04kA (P-P), 1.41kArms, 60.0ms (duration)
± 0.1
Hz
± 1%
± 2%
± 5%
< 3%
1.0
per UL1741 / IEEE1547 / CSA22.2#107.1
Break load rated, NEMA 3R
600
200A or 400A, Varies by model, see Tables 4.3 & 4.4
VAC
Arms
Page 83 of 92
PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
Table 9.2 – AC Output Specifications
Factory Default
Voltage Limit
Clearing Time
(p.u.)
(s)
Adjustment Range
Voltage Limit
Clearing Time
(p.u.)
(s)
Trip Setting
ANSI
Device
Number
Undervoltage (fast)
27
V < 0.5
0.16
V < {0.5, fixed}
0.16
Undervoltage (slow)
27
V < 0.88
2.00
V < {0.5 to 1.0}
0.16 to 300
Overvoltage (slow)
59
V > 1.1
1.00
V > {1.1 to 1.2}
0.16 to 300
Overvoltage (fast)
59
V > 1.2
0.16
V > {1.2, fixed}
0.16
Table 9.3 – Voltage Trip Settings
Factory Default
Frequency Limit Clearing Time
(Hz)
(s)
Adjustment Range
Frequency Limit
Clearing Time
(Hz)
(s)
Trip Setting
ANSI
Device
Number
Underfrequency (fast)
81U
f < 57.0
0.16
f < {57.0, fixed}
0.16
Underfrequency (slow)
81U
f < 59.3
0.16
f < {57.0 to 59.8}
0.16 to 300
Overfrequency (fast)
81O
f > 60.5
0.16
f > {60.5, fixed}
0.16
Table 9.4 – Frequency Trip Settings
9.3 Other Specifications
Operational Ambient Temperature, full power
Storage Temperature
Cooling
Inverter Enclosure
Switching Electronics Enclosure
Standby/Tare Loss
EMI Compliance
-40ᵒ to +55ᵒC (-40ᵒF to +131ᵒF)
-40ᵒ to +55ᵒC (-40ᵒF to +131ᵒF)
Automatic Forced Convection
Rain Proof per UL1741
IP-62 (sealed design)
208Vac models – 1W
240Vac models – 1W
480Vac models – 3W
600Vac models – 3W
FCC Part 15, Subpart B, Class A
Table 9.5 – Other Specifications
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
100
MPPT Min.
(Standard)
AC Power Output (kW)
80
MPPT Min.
(LV Option)
60
PVI 50KW
PVI 60KW
PVI 75KW
40
Strike Voltage (Standard)
PVI 85KW
Strike Voltage (LV Option)
PVI 100KW
20
0
275 300 325 350 375 400 425 450 475 500 525 550 575 600 625
DC Input Voltage (VDC)
Figure 9.1 AC Output Power vs. DC Input Voltage of PVI 50-100KW Series Inverters
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
9.4 Internal Circuit Diagram
The basic power flow within the PVI 50KW-100KW series inverters is shown in the simplified oneline diagram below. Note that grounding and GFDI circuit is not depicted.
Figure 9.2 – Simplified One-Line Diagram of PVI 50-100KW Series Inverters
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
10 Appendices
10.1 Appendix A – PVI 50KW, 60KW, 75KW, 85KW, 100KW Data Sheet
https://solectria.com/support/documentation/inverter-datasheets/pvi-50kw-60kw-75kw-85kw100kw-3-ph-central-inverters/
10.2 Appendix B – String Sizing Tool
https://solectria.com/support/string-sizing-tool/
10.3 Appendix C – Contact Information
Yaskawa – Solectria Solar
360 Merrimack Street
Building 9, Floor 2
Lawrence, Massachusetts 01843
USA
Tel:
Fax:
Sales/General Info:
Technical Support & Service:
Website:
978-683-9700
978-683-9702
inverters@solectria.com
978-683-9700 x2
www.solectria.com
10.4 Appendix D – Authorized Distributors
https://solectria.com/pv-inverters/how-to-buy/
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
10.5 Appendix E – LED_Indicators
PVI 50-100 LED Indicators
The LED indicators mounted on the front left of the inverter enclosure just above the LCD screen
allow the installer and user to see the current status of the inverter.
When the green “Power” LED is on, the inverter is operating normally and producing power.
CAUTION
RISK OF ELECTRICAL
SHOCK
NORMALLY
GROUNDED
CONDUCTORS MAY
BE UNGROUNDED
AND ENERGIZED
WHEN A GROUND
FAULT IS INDICATED
Power
Ground Fault
Error
Figure 1 – LED Indicators displaying Normal Operation (green)
When the yellow “Ground Fault” LED is on, a ground fault in the PV array has been detected. The
ground fault must be located and repaired, and the inverter’s GFDI fuse replaced before the
inverter will function.
CAUTION
RISK OF ELECTRICAL
SHOCK
NORMALLY
GROUNDED
CONDUCTORS MAY
BE UNGROUNDED
AND ENERGIZED
WHEN A GROUND
FAULT IS INDICATED
Power
Ground Fault
Error
Figure 2 – LED Indicators displaying a Ground Fault in the PV array (yellow)
WARNING: If the yellow Ground Fault indicator is lit then normally grounded
conductors may be ungrounded and energized. DO NOT TOUCH ANY EQUIPMENT
including, but not limited to: the inverter, the PV array disconnects and combiners,
the PV panels and racking system. Immediately contact the installer or another
qualified person to locate and repair the source of the ground fault. For additional
support, please contact Solectria Renewables by calling +1-978-683-9700.
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
In addition, various operating and error conditions are indicated by various LED display patterns
shown in the following tables.
Description of symbols used to indicate LED status:
LED Off
LED flashing, mostly off (10% on, 90% off), once every 2 seconds
LED blinking slow (50% on, 50% off), once per second
LED blinking fast (50% on, 50% off), two times per second
LED flashing, mostly on (90% on, 10% off), once every 2 seconds
LED On steady
LED indicator
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
Operating condition
standby (night)
Description
input voltage < 220 VDC
initialization
unit is being initialized
starting / synchronizing
-starting transformer
-synchronization to grid
-closing contactor
inverter is producing AC power
normal daytime operation
Running
MPPT or constant voltage
mode
Running
Power de-rating mode
Power-off (stop)
reduction of power fed to the grid
due to increased IGBT temperature
or inverter is at full rated power
Inverter stopped via front panel
or remote shutdown
Table 1 – LED status (normal operating conditions)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
LED indicator
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
Operating condition
Stop
Utility Failure
Stop
DC input too Low
Stop
DC input too High
Description
Utility failure (i.e. blackout or brownout)
Unit will restart 5 min after grid (AC)
is restored
Input voltage low < 270V
(Note: also if <400V at startup)
Stop
DC power too Low
input voltage high > 630V
(Note: 600 VDC is the maximum
allowable PV open circuit voltage)
Power from PV panels is too low
waiting for stronger sun
Stop
waiting, checking grid
presence of valid grid conditions
Is being checked
Stop
waiting for AC voltage
AC grid voltage
is absent
Stop
AC fuse blown
(one phase)
Stop
AC voltage too High
(alternating green & red LED)
Stop
5 minute wait for re-start
(Green-pause-Red LED pattern)
Stop
Wrong AC phase sequence
(Red-pause-Green LED pattern)
One AC power fuse blown
Or one v-sense fuse blown
Or one grid phase off/blown
AC Grid Voltage above UL limits
(>228V for 208VAC, >264V for 240VAC)
>528V for 480VAC, >660V for 600VAC)
Utility required 5 minute wait for restart
in process since grid (AC) restored
AC Grid is opposite phase rotation
Switch two phase wires to correct
Table 2 – LED status (DC or AC error conditions)
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
LED indicator
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
green:
yellow:
red:
Operating condition
Contactor Failure
(one blink)
Description
AC contactor looks closed (or open)
when it should be open (or closed)
Vsense Failure
(two blinks)
DSP board cannot communicate
with vsense board
Current Sensor Failure
(Four blinks)
Current sensor failed self-calibration
during the unit wakeup
(>5% out of range)
Temperature Sensor Failure
(five blinks)
Temperature sensor reads
below -45C
Open AC Phase
(two blinks (pause) two blinks)
One AC phase with zero current detected
Desat Failure
(one blink (pause) two blinks)
Power stage desaturation failure
IGBT over temperature
(one blink (pause) three blinks)
Power stage junction temperature
over limit (125C)
Table 3 – LED status (Inverter error conditions)
DOCR-070233-D
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PVI 50-100KW Series Inverters Installation and Operation Manual (Rev D)
10.6 Appendix F – UL1741/IEEE 1547 Authorization Letter to Mark Product
DOCR-070233-D
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