GummiSolar
New Member
- Joined
- Feb 23, 2022
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Beware of the APEXIUM BOX this happened with the connectors they provided with the box. Also I talked to Apexium and they were very little help.
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Beware of the APEXIUM BOX Connectors
- Thread starter GummiSolar
- Start date
teal95
Solar Addict
That looks like the connector was the issue.
Suijkerbuijk
I cannot be held responsible for this information.
Looks like a quick release systeem that burns out
Only reason is that it not have a good connection on it.
And it heat up till it meld and more lose it come and more heat come .
I do not like systeem that you can easy connect or disconnect.
By use it worn out and you have a bad connection.
Wel if this is the problem never use a systeem like that again
And its good that you have find it and worn others about it.
Good luck
Only reason is that it not have a good connection on it.
And it heat up till it meld and more lose it come and more heat come .
I do not like systeem that you can easy connect or disconnect.
By use it worn out and you have a bad connection.
Wel if this is the problem never use a systeem like that again
And its good that you have find it and worn others about it.
Good luck
ricardocello
Watching and Learning
Looks like it is designed for two cables in parallel, only one burned up.
Were you using two? If so, it possible the undamaged one has slightly higher resistance, so the other one took the hit.
How much current was going through there? 50mm^2 welding cable is rated for 255-345A depending on manufacturer.
Not clear what the connector is rated for, but I would guess 200A.
GummiSolar
New Member
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- Feb 23, 2022
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The connector is rated for 200A, It is a 50mm2 wire and the inverter was set to charge and discharge at a max 160A.
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ricardocello
Watching and Learning
Looks like it says 50 mm on the cable side. Maybe thats a diameter and not an area.
Suijkerbuijk
I cannot be held responsible for this information.
The table above assumes a cable length of approximately one meter. If you want to use longer cables, the guideline is to increase the cable diameter from 2 meters. E.g. 12 volts, 1500 watts, becomes 35mm2 instead of 25mm2 cable.
Picture is in Dutch so translation will come .
2e picture is the translation of it .
I hope some help with this.
Picture is in Dutch so translation will come .
2e picture is the translation of it .
I hope some help with this.
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Hmmm... my schoolgirl maths tells me that a diameter of 50mm would be an area of 25*25*3.14 = 1962mm^2 - that's big!
Brucey
Solar Wizard
Is it possible it wasn't fully seated/locked in?
ricardocello
Watching and Learning
Sounds too big. I really wish the vendors would publish the part numbers for these connectors.
Maybe they couldn’t fit the 2 superscript for mm^2
I read the Apexium specs and manual and found nothing.
So I don’t know why the connector says 50mm.
Brucey
Solar Wizard
I think the second connector is for daisy chaining a string of them in parallel.
Suijkerbuijk
I cannot be held responsible for this information.
Ist not 50mm but 50mm2 .
So i mis the 2 on the end.
I have see that a lot in the automotive world .
That is my old job and dont ask me wy ?
Think that those people think you know that it never can be 50mm .
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robbob2112
Doing more research, mosty harmless
42OhmsPA
What's in a title?
Wow, sorry that happened.
Do you have any more photos of the back side with everything still connected?
Is that a washer?
For da love of gay electrons don’t bring up washers and connections again.
42OhmsPA
What's in a title?
Brucey
Solar Wizard
When I inquired about the apexium box and asked if cables were included she mentioned that the connectors were included to make your own cable.
Moved this to its own thread.
Brucey
Solar Wizard
Thanks.
Unless I am mistaking what the images are showing it looks like this right angle connector is designed for push on quick connect. If so that is a design connection fault area. Since the damage seems greatest at this connection zone, even thought there is also some damage at the bus bar bolt area, I would agree that this type and brand of connector should be avoided.
houseofancients
Solar Wizard
as responded in another threat on the same topic :
looks like you either had a bad connector, or it wasnt fully plugged it, causing resistance, which translates to heat
looks like you either had a bad connector, or it wasnt fully plugged it, causing resistance, which translates to heat
houseofancients
Solar Wizard
not really...
at least the seplos ones are rated for 500A , but you do need to push until they click.
so either this one had a production error, or it wasn't fully pushed in
robbob2112
Doing more research, mosty harmless
The other option would be not completly pushed on. Or with the OP stacking batteries and doing a Z wire configuration (in accordance with the manual/common practice) verse using bus bars the connection just plain overheated. Thermal image of wires in this configuration are pretty stark - the first and last connection from the box to the inverter is taking current from the whole stack
To the OP - you have a stack of batteries - was this connection on the top/bottom or somewhere in the middle?
And it could just be a bad connector on the wire.
Hopefully they send him a new wire and box connection to fix the issue.
and IMO were I to do a stack of batteries I would use bus bars for all the connections to keep the current even and I would connect my uplinks between the 1&2 and 3&4 battery to keep the balance dead even. This is per the thread about paralleling batteries and the answers are not intuative but the math is.
ricardocello
Watching and Learning
These no-name connectors are basically knock-offs of the Amphenol Industrial SurLok Plus series of connectors.
It's difficult to trust the knockoffs, because I have yet to see a data sheet with full specifications.
Yes, I realize there is no choice when you buy the gear.
For reference, I use the Amphenol ones for my DIY stuff because I know the company stands behind them.
No, I don't know if they are interchangeable with knockoffs, probably not.
SurLok Plus™
The SurLok Plus™ Compression Lug is a field-installable, high-reliability solution surpassing traditional compression lugs. Designed for ease of use, it utilizes standard industry crimp, screw, and busbar termination methods, eliminating the need for specialized torque tools.
amphenol-industrial.com
houseofancients
Solar Wizard
except.. they are not no-name ( in the seplos boxes), they are futronics , and are use in all BYD busses and cars, and they are certainly no knock-offsThese no-name connectors are basically knock-offs of the Amphenol Industrial SurLok Plus series of connectors.
It's difficult to trust the knockoffs, because I have yet to see a data sheet with full specifications.
Yes, I realize there is no choice when you buy the gear.
For reference, I use the Amphenol ones for my DIY stuff because I know the company stands behind them.
SurLok Plus™
The SurLok Plus™ Compression Lug is a field-installable, high-reliability solution surpassing traditional compression lugs. Designed for ease of use, it utilizes standard industry crimp, screw, and busbar termination methods, eliminating the need for specialized torque tools.
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