January 4, 20242 yr Good day, Our estate has a small RCT Axpert 1000W 12v inverter which is used for backup power for streetlights etc. (about 300W total load). It's connected to a Hubble S-100A battery. It's been running perfectly fine since July 2023. However, the inverter is no longer supplying any output power during load-shedding. There is no alarm/fault code and the inverter display shows that the battery is full (13.7v), the grid input voltage is 0v, Output is 230V AC, and load is 0%. A multimeter confirms 0V AC at the inverter's output connecter. When grid returns, the AC on the inverter output is also back. We have switched the inverter on/off - same behaviour. Also, changed from Apl to Ups - same behaviour. Any thoughts, assistance will be much appreciated. Thanks
January 4, 20242 yr 10 minutes ago, Mier said: Good day, Our estate has a small RCT Axpert 1000W 12v inverter which is used for backup power for streetlights etc. (about 300W total load). It's connected to a Hubble S-100A battery. It's been running perfectly fine since July 2023. However, the inverter is no longer supplying any output power during load-shedding. There is no alarm/fault code and the inverter display shows that the battery is full (13.7v), the grid input voltage is 0v, Output is 230V AC, and load is 0%. A multimeter confirms 0V AC at the inverter's output connecter. When grid returns, the AC on the inverter output is also back. We have switched the inverter on/off - same behaviour. Also, changed from Apl to Ups - same behaviour. Any thoughts, assistance will be much appreciated. Thanks Let's give @BritishRacingGreen time to share his specialist knowledge. Strange to see it shows 230V output but nothing powering the load.
January 5, 20242 yr 14 hours ago, Scorp007 said: Strange to see it shows 230V output but nothing powering the load. Yes. And stranger that bypass mode works. That suggests a fault with the inverter relay. I'm guessing that the 230V is a measurement of the inverter (DC -> AC converter) output, not the load voltage. So sorry: it doesn't seem like anything simple. Edited January 5, 20242 yr by Coulomb
February 20, 20242 yr Author Just some feedback. We logged a return with the supplier. RCT replaced the motherboard under warranty. Back to normal operation again.
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