My bad. have changed diagram
One problem I had, was the inverter has a floating neutral on output side. Voltage tests between live & earth 110v, between neutral & earth 110v.
Earth leakage on Mini DB showed an earth fault and would not trip.
After consulting with an electrical engineer who stated the neutral needed a reference point, I connected the neutral to main earth on the output side of the inverter.
Bingo, problem solved
Ah hah!Originally Posted by Tonye
My bad. have changed diagram
One problem I had, was the inverter has a floating neutral on output side. Voltage tests between live & earth 110v, between neutral & earth 110v.
Earth leakage on Mini DB showed an earth fault and would not trip.
After consulting with an electrical engineer who stated the neutral needed a reference point, I connected the neutral to main earth on the output side of the inverter.
Bingo, problem solved
This solves a problem i have been finding of an earth fault not tripping the EL.
So the solution is to earth the neutral on the load side(output) of the inverter?
This makes sense.
Thanx for the input.
The inverters i have installed are line interactive inverters so no changeover switch is required. It switches automatically on mains fail, but even when Eskom is available it runs in bypass mode, still supplying the critical load with power at the rated maximum size of the inverter...
Glad I could help.
My inverters are also line interactive. The reason for running through the changeover switch is to allow the client to turn off
Equipment which may overload the inverter.
Just completed an installation. Pulling my hair out. Earth leakage keeps tripping when running on inverterAh hah!
This solves a problem i have been finding of an earth fault not tripping the EL.
So the solution is to earth the neutral on the load side(output) of the inverter?
This makes sense.
Thanx for the input.
The inverters i have installed are line interactive inverters so no changeover switch is required. It switches automatically on mains fail, but even when Eskom is available it runs in bypass mode, still supplying the critical load with power at the rated maximum size of the inverter...
mode. Apparently their are different types of earth leakage units.
Type AC, sensitive to alternating current only
Type A, sensitive to alternating current and/or pulsating current with DC components.
Don't know if you have also experienced this.
What about a 2 pole circuit breaker on the inverter input and output side? And cable size on the AC side due to the charge current that the controller is set at?
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