Greetings all this is the second time I have gone out to a site to replace an inverter and am unsuccessful at getting a rapid shutdown to shut the DC off.
My understanding is the rapid shutdown acts as a DC PV disconnect? You just hit the button and the system opens a contactor?
When I did that the LED still glows red and I measure 480VDC at the inverter.
Part numbers are SMA RSB-2S-US-10 and RSC-1X-US-10
Anyone have any tips or experience with these on here?
I notices in the manual it says:
There is of course a 'DC disconnect' however its part of the inverter being replaced.
Thanks in advance.
My understanding is the rapid shutdown acts as a DC PV disconnect? You just hit the button and the system opens a contactor?
When I did that the LED still glows red and I measure 480VDC at the inverter.
Part numbers are SMA RSB-2S-US-10 and RSC-1X-US-10
Anyone have any tips or experience with these on here?
I notices in the manual it says:
So does this thing not work if there is not enough sun? It was pretty early AM when we got there and cloudy.8 Checking the Function of the Rapid Shutdown System
The Rapid Shutdown System is supplied via the PV array. If there is insufficient irradiation on the PV
array, the supply voltage of the Rapid Shutdown System is too low and the function of the Rapid
Shutdown System is not able to be checked.
Requirements:
• The Rapid Shutdown System must be commissioned.
• Wait a minimum of 60 seconds from powering on the system before testing the Rapid
Shutdown System functionality.
• There must be sufficient irradiation on the PV array.
There is of course a 'DC disconnect' however its part of the inverter being replaced.
Thanks in advance.