Jim Burrow
Solar Enthusiast
- Joined
- Jun 27, 2020
- Messages
- 516
We all know that if you do not put at least a 50-ohm resistor between the controller input and the positive side of your battery, for a moment, you will get a big spark and scare you to death. The resistor prevents that initial spark from the capacitor in the controller/inverter from discharging to fast.
In my setup, I have a circuit breaker between the positive terminal of the battery and the battery positive input on the controller. – see the image!
So, what I do every time I want to shut down my controller (I’m still in the testing phase), I always pop the circuit breaker, so the battery does not have a small discharge current while everything is off. – In theory!
But before I reset the circuit breaker in order to connect the battery to the controller, and turn on the controller, I have added a 50-ohm resistor in series with a push-button switch, (like a doorbell) across the breaker terminals.
To prevent a large spark when I connect the battery right away, I push the button switch for a moment to discharge that capacitor then I can go ahead and reset the breaker with no spark.
The image shows the push button, 50-ohm resistor, and the battery circuit breaker wired along with the 2424Lv -MDS controller/inverter by MPP
In my setup, I have a circuit breaker between the positive terminal of the battery and the battery positive input on the controller. – see the image!
So, what I do every time I want to shut down my controller (I’m still in the testing phase), I always pop the circuit breaker, so the battery does not have a small discharge current while everything is off. – In theory!
But before I reset the circuit breaker in order to connect the battery to the controller, and turn on the controller, I have added a 50-ohm resistor in series with a push-button switch, (like a doorbell) across the breaker terminals.
To prevent a large spark when I connect the battery right away, I push the button switch for a moment to discharge that capacitor then I can go ahead and reset the breaker with no spark.
The image shows the push button, 50-ohm resistor, and the battery circuit breaker wired along with the 2424Lv -MDS controller/inverter by MPP