DCV switch between battery and pip

J

Joost2

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Joined
Jun 21, 2017
Messages
117
Hello,

Can someone tell me where I can find good quality DCV switches between battery and pip?
 
Dcv switch? Between battery and pip? I dont understand :)
 
I use HRC fuses - not cheap but work very well

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Ahh battery switches. Yes HRC is one of the best. I use HV-DC ANL fuses rated to 80VDC. But i would switch to HRC in future.

I also use switches for 48VDC use. Can be seen in my videos.
 
hbpowerwall said:
I use HRC fuses - not cheap but work very well

Click to expand...
I was just about to buy one of these units I'll get it through the link.

For 48v system with 3000w inverter would 125 amp or 160 be recommended?

I'm basing that on 6000w surge voltage/48..Am I on right track?
 
I wouldnt go over 125 since 6kW would be 125A.
Unless you plan to surge often. Just make sure cables and battery bank can deliver the current easily. 125A would be up to 200A before it blows in short terms.
 
I max draw 90amps at the moment
 
daromer said:
I wouldnt go over 125 since 6kW would be 125A.
Unless you plan to surge often. Just make sure cables and battery bank can deliver the current easily. 125A would be up to 200A before it blows in short terms.
Click to expand...

I don't plan on going to maxsurge ever, was just covering worst case.
I was thinking 35mm2 cable between batteries and inverter. Can you go too big with cables?
 
Thank people for your input!!!!!

One thing is circling on my mind and that is the battery bank will be at least 200A are those contractors too weak? Another thing I'm wondering after viewing YouTube video from a member is that he used Anderson connectors but they are 40 or 60 Amps max!!!! Is this save??
 
You can always bridge connections to share the amperage. On the anderson plugs, there are several different ratings, just like the XT connectors. I think most people who use the andersons usually use both lugs for the same side, so the voltage/amperage is shared between the two lugs. Which means they use 2 andersons per pack.
There are XT150's, and they are fairly small (compared to an anderson), so theres no reason why there aren't andersons that can't handle the heavier amperage.
 
Though i wouldnt run 150A continous. Thats the difference. Most Anderssons are continous rated meanwhile for instance XT60 will be glowing after some time at 60A. same with XT90 at 90A.
But they tend to hold up well though even if they can get hot. Whats most important with XT contacts is to never pull them in or out under load. That will kill them fast.

Yes I have tested :D
 
Yep, and andersons can be connected/disconnected under load. Their design allows the contacts to be cleaned when re-inserting the plug. Not to mention the primary power transfer is on the back of the metal hump, not on the front where they initial contact is made.

I personally am going to go with andersons when I build my packs. I feel they are far more rugged and resilent. Not to mention they come with built in pressure points to screw down to something solid
 
I have the luck to buy at a technical supplier so I don't need to buy Chinese shit.
Good stuff cost money somy and my neighbors safety is priceless!!!!!

Yesterday I was looking around on there's website and slowly I understand why good stuff has there price.
 
Not everything that has a higher price is better quality; and not everything that is cheap is crap. There are a lot of quality stuff coming from China. Pretty much all of our chargers originate from China. Something may say it was 'assembled' in Taiwan or Indonesia or some other place, but the circuit board probably came from China.
That's not to say there are Chinese knockoffs, or cheaply made stuff. But that can come from anywhere.
 
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