Selectronic SP PRO Quick start guide

IN0016 Revision 12 Part # 004573 –1 of 22
POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
SP PRO - Three Phase Installation Notes
For SP PRO Firmware revision 7.01 and above.
Contents
SP PRO - Three Phase Installation Notes ............................................................................... 1
Introduction ..................................................................................................................... 2
Installation checklist.......................................................................................................... 3
Wiring Overview ............................................................................................................... 6
Installation ..................................................................................................................... 10
Charge Stage Linking................................................................................................... 13
SP PRO Configuration –Additional Configuration Settings.................................................. 13
System –Multiple Phase Settings ................................................................................. 13
Verifying Phase Settings............................................................................................... 14
System –Multiple SP PRO Charging.............................................................................. 15
Charge Stage Linking................................................................................................... 15
Test Linking (Test linking of charge stages) .................................................................. 16
Shunts ........................................................................................................................ 17
Zero all current shunts................................................................................................. 18
Test shunt 1................................................................................................................ 18
SoC Control................................................................................................................. 18
Battery Capacity .......................................................................................................... 18
Max. Charge Current.................................................................................................... 18
Battery Charger Voltage settings and Temperature Compensation.................................. 18
DC Shutdown and Generator Lock Out Override ............................................................ 19
Disable Generator Control on L2 and L3........................................................................ 19
AC Source Power......................................................................................................... 20
Test System Function .................................................................................................. 20
Solar Hybrid Control .................................................................................................... 21
Synchronising SoC between inverters. .......................................................................... 22
Operation ....................................................................................................................... 22
Additional Information..................................................................................................... 22

IN0016 Revision 12 Part # 004573 –2 of 22
SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Introduction
SP PRO –Three Phase Installation Notes detail the installation and additional configuration for
three SP PRO series II inverters in a three phase inverter system. One SP PRO is installed per
phase and they are interlinked and configured to allow them to operate together. The L1 phase
is the prime controller of the three phase system. It controls the operation mode of the
system, the synchronisation to the AC source, controlling of the generator etc. The L2 and L3
phase SP PROs are controlled by the L1 phase SP PRO via each unit’s SYNC interface.
Note: This document needs to be read in conjunction with the SP PRO Instruction Manual and
SP LINK instruction manual (both found in SP LINK Help menu)
Note 2: Parameter locations will be shown as per the picture below or as a drill down structure,
such as Configuration Settings >Inputs / Outputs > Battery Charger Inputs > Initial Stage Input

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
Installation checklist
The following table summarises the steps taken to set up a three phase SP PRO system. Once
the system has been installed, use the following checklist to ensure that each step has been
completed.
Refer to the pages following the tables for detailed information on each of the installation steps.
Installation step
L1
L2
L3
Install SP PROs as per manual
Connect AC wiring
Connect Main DC wiring
Wire 800A shunt in L1, L2 and L3 Batt -ve
Wire 800A shunt sense wires to L1, L2
and L3 shunt 1. Note polarity
Pre-charge and Midpoint Wiring
Sync Interface connections
Charge stage linking
Battery temperature sensor installed
Turn on Pre-charge and check front panel
LEDs
Turn on main DC isolators. LEAVE
inverters in IDLE.
Configure Parameters in each SP PRO
(see SP PRO Configuration table below)
Verifying Phase Settings
1 flash / 2 sec
2 flash / 2 sec
3 flash / 2 sec
Test linking of charge stages
Test shunt 1, positive (+) means charging
negative (-) means discharging.
Zero all current shunts
Test system function

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
SP PRO Configuration - Additional Configuration Settings
Parameter to be programed
L1
L2
L3
Multi Phase setting
(Configuration Settings > System)
L1-Primary
L2-Secondary
L3-Secondary
System –Multiple SP PRO Charging
(Configuration Settings > System)
Enable
Generator Fault input (When used)
(Configuration Settings > Input / Outputs >
Generator Inputs)
Digital control
input 3
none
External regulator control output
(Configuration Settings > Input / Outputs >
Extern. Regulator Outputs)
none
Check that Digital control input 1, Digital
control input 2, Digital control output 1 and
Digital control output 2 are not allocated.
(Configuration Settings > Expansion Card
Wiring Diagram)
none
Initial stage input
(Configuration Settings > Input / Outputs >
Battery Charger Inputs)
Digital control input 2
Initial stage edge
(Configuration Settings > Input / Outputs >
Battery Charger Inputs)
Rising
Float stage
(Configuration Settings > Input / Outputs >
Battery Charger Inputs)
Digital control input 1
Float stage edge
(Configuration Settings > Input / Outputs >
Battery Charger Inputs)
Rising
Initial stage output
(Configuration Settings > Input / Outputs >
Battery Charger Inputs)
Digital control output 2
Float stage output
(Configuration Settings > Input / Outputs >
Battery Charger Inputs)
Digital control output 1
Shunt 1
(Configuration Settings > Shunts)
System SoC
For a DC couple solar system –Set Shunt 2
name
(Configuration Settings > Shunts)
Solar

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
Parameter to be programed
L1
L2
L3
For a DC couple solar system –Set Shunt 2
Max current
(Configuration Settings > Shunts)
1/3 solar shunt’s max current (to let each unit
account for its 1/3 of the charging)
SoC control
(Configuration Settings > Quick Start)
Enabled
Battery capacity
(Configuration Settings > Quick Start)
Battery capacity
(@ C rate being used, if unknown use C10)
Max Charge current
(Configuration Settings > Charger)
1/3 Max battery charge current
NOTE: This setting cannot exceed 200A in
systems with DC coupled Solar.
Battery Charger voltage, time and temperature
compensation settings
(Configuration Settings > Charger)
To suit battery bank
DC shutdown voltages
(Configuration Settings > Inverter)
Note: L1 controls the inverter shutdown
To suit
system
Lower than
L1 by 10% or
minimum
Lower than
L1 by 10% or
minimum
DC Shutdown Recovery Voltage
(Configuration Settings > Inverter )
To suit system
Generator lockout override
(Configuration Settings > AC Source >
Generator Auto Start)
To suit
system
Lower than
L1 by 10% or
minimum
Lower than
L1 by 10% or
minimum
Generator controller (Using L1 to control
generator)
(Configuration Settings > AC Source >
Generator Controller Settings)
Enable
Disable
Disable
AC source power
(Configuration Settings > Quick Start)
Solar Hybrid (Grid Connected): Maximum
required AC source power per phase.
Off Grid systems: 1/3 capacity of three
phase Generator (Example: If Generator is
20kW then set L1 = L2 = L3 to 6.7kW).

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Wiring Overview
The following is an overview of the connections which form part of the SP PRO three phase
system.
SP PRO Three Phase AC wiring layout
SP PRO Three Phase main DC wiring layout

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
SP PRO Three Phase DC pre-charge and midpoint wiring layout
SYNC interface interconnections

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Charge Stage Linking –Common to all SP PRO units
Signal power comes from 12V, 1 amp aux output supply on L1
(adjacent to the SYNC 1 connector within the SP PRO).

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
Charge stage link wiring between SP PRO units
SP PRO 3
SP PRO 2
SP PRO 1
Signal power comes from 12V,
1 amp aux output supply on L1
(adjacent to the SYNC 1
connector within the SP PRO).

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Installation
The SP PRO units are installed as per the installation instructions in the user manual.
Special attention needs to be paid to the minimum spacing between the SP PROs as outlined in
the Preparation section of the installation manual.
Place the supplied Phase labels (L1, L2 and L3) on the top right hand corner of each of the SP
PRO inverters. This will help to identify each inverter during system commissioning and testing.
AC Wiring
Attention must be paid to the Neutral conductor and connection through to the loads. The
neutral conductor connecting to the loads must be maintained such that operation of any
external SP PRO isolators would not alter the bonding between Neutral and Earth.
AC Source Neutral connections from L1, L2 and L3 must be connected together at the same
common point.
AC Load Neutral connections from L1, L2 and L3 must be connected together at the same
common point.
Three phase circuits which have loads that cannot tolerate a phase failure must be protected by
a Phase Failure Relay (not supplied).
Main DC Wiring
Refer to SP PRO Three Phase main DC wiring layout diagram above
L1, L2 and L3 phases must have their main negative battery connection wired in series with a
current shunt. The sense wires from the shunt are connected to the shunt inputs on the
expansion cards of the L1, L2 and L3 phase SP PROs. The Shunt 1A input of the expansion
card is to be connected to the SP PRO L1/L2/L3 side of the shunt. The Shunt 1B input of the
expansion card is to be connected to the battery side of the shunt. This enables all three
SP PROs to read the total battery current and keep track of the battery State of Charge (SoC).
If the system incorporates a DC charging source (such as DC coupled PV solar) then a separate
current shunt is needed. This current shunt is wired onto the inverter side of the battery shunt
with its sense wires connected to all three SP PROs (Shunt 2).
NOTE: With a DC charging source in the system the Max Charge current setting (Configuration
Settings > Charger) cannot exceed 200A.
Care must be taken to ensure that the cabling is rated to carry the current for the segment that
it is installed in. The negative connection from the shunt to the battery will be carrying the
combined current of three SP PRO inverters.

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
All DC cabling between the battery bank and battery protection and the battery protection to
the 800A current shunt must be a minimum of 3 off 70mm2V90HT cables or equivalent. After
the DC battery protection and the current shunt the cables can be split into 3 circuits, each a
minimum of 70mm2V90HT cables. Each circuit is protected by a 250A HRC fuse or DC circuit
breaker.
All DC cabling must be protected at the battery bank by suitable 630A fuses.
Suitable Overcurrent Protection.
The table below gives options for suitable battery fuses and individual inverter fuse types
Circuit position
Rating and type
Suitable Type and brand
Main battery fuse
630A HRC
ABB OFAF3H630, OFAF4H630
Gave: 67320630 (DKSH)
or equivalent
Inverter fuses
250A HRC
ABB OFAF1H250, OFAF2H250
or equivalent
Inverter breaker
250A DC rated MCCB
Siemens 3VL37251DC360AA0
or equivalent
Pre-charge and Midpoint Wiring
The pre-charge and midpoint wiring should be wired as a bus arrangement and connected to
the battery via a common connection for all three phases. This will allow all three SP PROs to
be pre-charged together. The pre-charge and midpoint wiring must be protected by suitable
fuses or circuit breakers of sufficient capacity.
Installation of 800A current shunt
The Current shunt must be mounted on a vertical, non-flammable surface. The shunt must be
oriented as shown to allow free air convection over the fins. The shunt must be in free air to
enable adequate air flow around the shunt to keep it cool. If the shunt is mounted in an
enclosed area then forced air must be provided to cool the shunt.

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Each end of the shunt must be connected to a minimum of 3 x 70mm2V90HT cables or
equivalent with a minimum length of cable to the next device of 500mm. This wiring is critical
as it is used to conduct the heat away from the 800A current shunt.
Warning: The current shunt can operate at high temperatures so care must be taken to
ensure there is no possibility of the shunt contacting with other wiring, devices, heat sensitive
items or non-authorised personnel.
DC cabling and 800A current shunt installation
Main DC over
current protection:
630A HRC fuses
Minimum 70mm2PVC cable
800A 100mV
current shunt
Individual
inverter wiring
protection:
250A HRC
fuses
Minimum 500mm

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
SYNC Interface Connections
Each SP PRO must be interlinked via its SYNC interface. With reference to the diagram above
( SYNC interface interconnections) connect each SP PRO together via either SYNC1 or SYNC 2
connection using the supplied “network” type cables. Only two cables are required to connect
the three SP PRO units. Both SYNC1 and SYNC 2 connection points are the same and either
can be used.
Charge Stage Linking
In order for the SP PROs units to share the charging of the battery bank, it is necessary for the
charge stages to switch simultaneously. The charge stages are interconnected via wiring
between each of the SP PROs Expansion cards. Each Expansion Card is wired in the same
manner, then linked.
Signal power comes from one of the SP PROs 12V 1 amp output supplies (adjacent to the SYNC
1 connector within the SP PRO).
SP PRO Configuration –Additional Configuration Settings
The following settings are required to activate the three phase mode on the three SP PRO
inverters. It is good practise to start with the L1 Primary Phase as this will prevent false alarms
on the L2 and L3 Secondary phases while loading the configurations.
Turn on the pre-charge breaker or isolator for the system. When all three SP PRO inverters
power up, turn on the main battery isolators for all three SP PRO inverters.
NOTE: The SP PRO inverters may give “sync” errors until the main battery isolators have been
closed on all three SP PRO inverters.
LEAVE the SP PRO inverters in IDLE. All three phases must have their configuration
programmed before attempting to start the system from Idle mode to On mode.
It is required to create a separate SP LINK site file for each SP PRO phase and add the prefix
“L1”, “L2” or “L3” to the appropriate file.
System –Multiple Phase Settings
Each SP PRO must be configured to suit the phase that is connected to by
setting the Multi Phase setting (Configuration Settings > System)
L1 –Primary: SP PRO is set as L1 phase –Red Phase
L2 –Secondary: SP PRO is set as L2 phase –White Phase
L3 –Secondary: SP PRO is set as L3 phase –Blue Phase
The Split Phase –Secondary and Disabled settings are not used in
a three phase system.

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Verifying Phase Settings
The phase settings can be verified on each SP PRO by observing the blue LED on top of the
E-N disconnect switch inside the SP PRO. For standard single phase systems this LED flashes at
a rate of one flash repeated every one second.
For a three phase system L1 flashes at a rate of one flash repeated every two seconds, L2
flashes at a rate of two rapid flashes repeated every two seconds and L3, the LED flashes at a
rate of three rapid flashes repeated every two seconds.

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
System –Multiple SP PRO Charging
In order for multiple SP PROs (as in a three phase system) to share the charging of the battery
bank, it is necessary to enable the multiple chargers setting.
Disabled: SP PRO is set for normal single phase, single SP PRO operation. This setting is
not used in a three phase system.
Enabled: SP PRO is set to share the charging with the other SP PROs.
Charge Stage Linking
Each SP PRO must be configured to accept the link signals.
Clear the following Inputs and Outputs :
Generator Fault Input –None
External Regulator Control Output –None

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Select the Configuration settings > Expansion card wiring diagram menu and check Digital
control input 1, Digital control input 2, Digital control output 1 and Digital control output 2 are
not allocated to any functions. Their boxes should be blank (see diagram below).
Set the following Battery Charger Inputs and Outputs –
Initial Stage Input –
Digital Control Input 2
Initial Stage Edge –
Rising
Float Stage Input –
Digital Control Input 1 (default setting)
Float Stage Edge
Rising
Initial Stage Output –
Digital Control Output 2
Float Stage Output –
Digital Control Output 1
Test Linking (Test linking of charge stages)
With all SP PRO units configured, test Float link by briefly touching a link wire across Digital
Control Out 1 terminals. All SP PRO units should switch to the Float charge stage. Test Initial
link by briefly touching a link wire across Digital Control Out 2 terminals. All SP PRO units
should switch to the Initial charge stage.
This can be done on any of the phases.

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
Shunts
The supplied shunt that is wired between the battery bank and the three SP PRO inverters must
be configured on L1, L2 and L3 SP PRO as follows:
Name = System SoC
Max Voltage = 100mV
Max Current = 800A
Note1: In System SoC mode, shunt currents are displayed with a sign; a
positive (+) number means charging and a negative (-) number means
discharging.
Note2: Only the System SoC shunt is used to accumulate the battery
SoC. Currents in all other shunts are excluded from the SoC calculation,
they are used to monitor other power source inputs. This allows the three
SP PRO inverters to track the battery SoC together.
If an additional shunt is required for monitoring battery charge current from a renewable DC
charging source (such as DC coupled PV solar) then this shunt must be connected to shunt 2
input on each of the L1, L2 and L3 phase expansion cards. The configuration setting for shunt 2
is different from that of Shunt 1. In this case each inverter only measures its share of the
charge current being 1/3 of the total charge current. This allows the DC coupled renewable
energy to be exported evenly between the three phase.
Name = Solar
Max Voltage = mV rating of the shunt
Max Current = 1/3 of the current rating of the shunt
For example if the Solar current shunt is a 200A 75mV shunt, the settings
for shunt 2 are:
Max Voltage = 75mV
Max Current = 67 A (=1/3 of 200A)
No extra shunt is required for AC coupled PV solar as this is measured via the SP PRO.
When all the current shunts have been installed and configured then each of the used current
shunts in each of the SP PRO inverters must be zero set (Service Settings in SP LINK).

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
Zero all current shunts
Put all units into Idle Mode –Hold ON button for 2 seconds on L1 inverter ONLY –light on L1
will flash “orange” (green/red both flashing on at the same time).
Note: ON button on L2 and L3 are disabled in a three phase system.
For L1, L2 and L3 go into Service Settings >Shunts and press Zero Shunt 1
This will zero all phases in system.
Note: All phases MUST be in IDLE mode during the zero current shunts procedure.
Test shunt 1
This test is to check shunt polarity.
With AC Sources disconnected, Apply load to any phase.
Check Data View > Now > DC > Battery Current, this should now be negative indicating that
the battery is delivering power.
Repeat for L2 and L3 phases checking that the polarity and value of the Battery current is the
same as L1.
SoC Control
The SoC is managed by all three phases. SoC needs to be enabled on L1, L2 and L3
Battery Capacity
Each SP PRO needs to have the Battery Capacity setting configured to the full amp hour
capacity of the battery bank.
Max. Charge Current
The Max Charge Current setting in L1, L2 & L3 phases must each be
configured to one third of the maximum charge current required by the
battery bank. For example if the maximum charge current is 150A then
set the Max Charge Current setting to 50A in L1, L2 and L3.
Battery Charger Voltage settings and Temperature Compensation
All of the battery charger voltages, time and temperature compensation settings should be the
same on all three phases. All three phases must have their battery temperature sensor
connected. All 3 temperature sensors must be bonded to the same location on the battery
bank.

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POWER PERFORMANCE PASSION
SP PRO Three Phase
Installation Notes
DC Shutdown and Generator Lock Out Override
The low battery voltage generator start and DC shutdown voltages need to be lower on L2 and
L3 than L1. This allows L1 to start the generator before any of the phases’ shutdown.
Disable Generator Control on L2 and L3
Normally only L1 is required to control the generator so in this case the Generator Controller
setting on L2 and L3 are set to disabled.

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SP PRO Three Phase
Installation Notes
POWER PERFORMANCE PASSION
AC Source Power
The AC Source Power setting in each of the SP PROs is the amount of power that is available
from the phase that is connected to that SP PRO. In the case where the SP PRO is connected
to a three phase generator, each SP PRO will need to be configured to one third of the three
phase generator’s rating.
Example 1: If the AC source is a three phase generator that is 30kVA then set the AC Source
Power setting on each of the SP PRO inverters (L1, L2 and L3) to 10kVA (8kW).
Example 2: If the AC source is a three phase grid with a capacity of 63 A per phase then set the
AC Source Power to 63A (or 15.1 kW)
Test System Function
Every system is a little different, so these tests are just a set of tests to consider.
You must apply tests appropriate to your system design.
Some tests that may be applicable:
Note: All DC isolators must be closed during testing to avoid errors.
Test
L1
L2
L3
Load support with No AC Source
Batteries charging from renewable
Batteries charging from AC Source
Generator start activated from set triggers
(such as SoC, Generator button on SPPro)
N/A
Generator synchronises (Voltage and
frequency in specification)