Bean Posted May 3, 2022 Posted May 3, 2022 Very much a noob to this and I’m quite clueless when it comes to working with these inverter but I’m slowly learning. Is it possible to install a time delay relay on an inverter circuit where the inverter is being used as a UPS - no solar? The circuits draw too much power when the inverter kicks in at load shedding or a power failure so I want to set them to delay turning on until the inverter has stabilised after switch over. Is this possible? I'm running 2 x Axpert 5kVa/4kw inverters with 48V 400ah total battery bank (8 x 12V 200Ah Gel batteries - 2 banks of 4 in series then both banks connected in parallel), Any feedback is much appreciated. Quote
Scorp007 Posted May 10, 2022 Posted May 10, 2022 On 2022/05/03 at 12:04 PM, Bean said: Very much a noob to this and I’m quite clueless when it comes to working with these inverter but I’m slowly learning. Is it possible to install a time delay relay on an inverter circuit where the inverter is being used as a UPS - no solar? The circuits draw too much power when the inverter kicks in at load shedding or a power failure so I want to set them to delay turning on until the inverter has stabilised after switch over. Is this possible? I'm running 2 x Axpert 5kVa/4kw inverters with 48V 400ah total battery bank (8 x 12V 200Ah Gel batteries - 2 banks of 4 in series then both banks connected in parallel), Any feedback is much appreciated. Although a bit bulky the KVP-30A unit that can switch 30A has a 0-300sec adjustable delay to switch back on after a under/over voltage. These can be used to delay fridges etc from switching on after the power went off and comes back on. Sold by AC/DC Dynamics stores. Quote
Kilowatt Power Posted May 10, 2022 Posted May 10, 2022 (edited) On 2022/05/03 at 1:04 PM, Bean said: The circuits draw too much power when the inverter kicks in at load shedding or a power failure so I want to set them to delay turning on until the inverter has stabilised after switch over I've had great success with Hiking DDS238-VAP DIN-rail 63A/80A digital adjustable under/over voltage protectors with 2-255 seconds adjustable switch on delay time. Hiking is a credible Chinese manufacturer of Class 1 accuracy kWh energy meters. You can purchase a single piece off AliExpress at https://www.aliexpress.com/item/4001049254215.html A more robust alternative, albeit more expensive and with less features, would be to use an on-delay timer connected to a household AC modular contactor as described here. Edited May 10, 2022 by Kilowatt Power Shortened links Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.