Has anyone tried out the REC pre-charge unit for connecting to your inverter?
Seems a decent unit if a bit over priced.
REC pre-charge manual
Seems a decent unit if a bit over priced.
REC pre-charge manual
Do you have a manual disconnect switch in your system? If so, how does that interact with the pre-charge unit?Yes, i use it in conjunction with a REC BMS. It works as it should.
Resurrecting old thread:
Do you have a manual disconnect switch in your system? If so, how does that interact with the pre-charge unit?
I should have replied to this earlier, sorry.No it's the batt + -> On/Off -> contactor -> bus bar.
The BMS is what controls the precharge as it has a 12v allow to charge, 12v allow to discharge and 12v master cut of signal. I used the master cut off signal to control the contactor.
Very good advice, thank you. I will implement as well.I have a startup/shutdown procedure attached to the wall right next to the disconnect so it’s unlikely to be done in the wrong order.
Be careful with the relay of the 712 as that can only support up to 1 amp of current. While the EV200 holding current is only 130 mA, it can have an inrush current of 3.8 amps. Maybe use a SolidSwitch 104 that can handle up to 4 amps: https://www.victronenergy.com/accessories/solidswitch-104I got the advice to add a pre-charge (from rec bms) for my contactor last line of defense system (image below).
Now I dont use the rec bms (but the jbd-sp040s020), can the rec bms pre-charge work as stand-alone? or potentially work by the relay of the BMV-712?