October 2, 20232 yr Good Day All I have purchased a Sunsync inverter and am about to have it installed but I need to ensure that i have all the components on hand for when it's being installed. While this thread is quite detailed, I have been hearing mixed information about a relay and whether it is still required for a 5kva Sunsync inverter which has an ATS240. 1. Is the Sunsync inverters sold in 2023, still require the relay if it has an ATS240? Seems Growatt's has it built in. 2. Is there a way to wire the inverter so that the relay is not required? 3. Which relay exactly is required? Please provide a link https://powerforum-store.co.za/collections/accessories/products/earth-neutral-bridge-box-for-ac-protection-box
October 2, 20232 yr Hi Scorp Thanks for the reply. This is a much cheaper solution. The link provided by Lee Page is for a 1 x N/C; 1 x N/O. However, you advised that it should be 2 N/C contacts. Please confirm which is correct. Most suppliers seem to only have 2 N/O.
October 2, 20232 yr Hi Scorp Thanks for the reply. This is a much cheaper solution. The link provided by Lee Page is for a 1 x N/C; 1 x N/O. However, you advised that it should be 2 N/C contacts. Please confirm which is correct. Most suppliers seem to only have 2 N/O. 1 N/C will also work. While most relay will have 2 my idea was just to double up. You MUST have N/C as the coil gets power from the grid the N/E is broken. As soon as grid is gone the relay must make the N/E connection. Google 220V 10A relay and look at the one with base sold by Microrobotics. It has 2 change over contacts. You can buy the complete box too as posted earlier. It all depends on what combiner or protection box you are going to use. Many things are dependent of other equipment. Browse through customer installs and you will see some variations.
October 3, 20232 yr So as tested with a multimeter, the Sunsync 5kw ats 240v switches off after 1 minute. This means that if a N/C ac contactor is used, it will bond when eskom power is present. I have heard from installers that they use N/O. Can someone please advise? Edited October 7, 20232 yr by Tafseer007
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