37
Selectronic Australia
Rev 41 - Dec 2022
Installation
External AC Source Contactor
For systems incorporating an external AC Source contactor, the following should be verified. Please note that
these items are in addition to any other items that are relevant to the system configuration.
Please ensure the external AC contactor has been
installed and commissioned according to the document.
TN0057 – SP PRO External AC Source Contactor Option
Before completing the following checklist.
•
Turn on the DC supply to the SP PRO(s), both pre-charge and main battery breakers.
•
Do a long press on the ON button and make sure all the inverters come on.
•
Do another long press on the ON button to put the inverter(s) in idle.
•
Connect SP LINK to the System Manager (L1 Manager) SP PRO.
•
To access the readings, click >
Data View
>
Now
•
Turn off all charging sources, such as any connected AC or DC Coupled solar power.
•
Turn off the AC Source circuit breaker so that there is no AC Source connected to the external contactor.
Item to check
Result
Check that the NC relay driving the external AC Source contactor is
not
energised.
Check the AC Source voltage in >
Data View
>
Now
>
AC Source Voltage
is zero.
Start the generator (if Off-Grid system) and turn ON the AC Source circuit breaker.
Check the following:
•
AC Source Voltage reading in the
Data View
>
Now
>
AC Source Voltage
reads correctly.
•
The External AC Source contactor has turned ON.
•
The AC Load voltage reads the same as in the >
Data View
>
Now
>
AC Source Voltage
•
Repeat for L2 and L3 in a multi-phase system.
Connect a Load to L1 phase only on the SP PRO. Turn the site loads off to the other phases:
•
Check the Load power with an AC clamp meter.
•
Check the AC Source power in >
Data View
>
Now
>
AC Source Power
(
L1
). This should be a
positive value and be equal to the Load placed on L1.
•
Repeat for L2 and L3 in a multi-phase system.
On the front panel of the manager SP PRO check:
•
Both the blue AC Source and AC Load LEDs are lit.
•
The blue Transfer LED is
not
lit.
Turn OFF the AC Source circuit breaker.
Turn ON the SP PRO(s) with a long press of the ON button.
Check the following:
•
AC Source voltage is still zero >
Data View
>
Now
>
AC Source Voltage
•
The external contactor is still off.
•
The NC relay driving the external contactor is on.
•
The AC Load voltage reads 240V in the >
Data View
>
Now
>
AC Load Voltage
Turn on the AC Source circuit breaker and check the following BEFORE the SP PRO(s)
synchronises to the AC Source.
•
AC Source voltage can be viewed in the >
Data View
>
Now
>
AC Source Voltage
•
The external contactor is still off.
•
AC Load voltage reads 240V in the >
Data View
>
Now
>
AC Load Voltage
Check the following AFTER the SP PRO(s) synchronises to the AC Source.
•
The AC Source voltage reads the source voltage in >
Data View
>
Now
>
AC Source Voltage
•
The external contactor has turned ON.
•
The AC Load voltage reads the same as in the >
Data View
>
Now
>
AC Source Voltage
Commissioning
