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Old 04-22-2019, 03:03 AM   #1
marklg
 
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Default Sterling BB1260 Running 80C+, Normal?

I'm still working on my installation but now have big wire (2X 25 Ft AWG4 in parallel) to my BB1260. Output current starts above 45 Amps but it quickly heats up and seems to switch to 1/2 power mode.

I have the remote and the temperature display quickly gets up to 80 C and it cuts back on power output. Both fans are running and I checked the screws holding the large devices to the heatsinks were tight. Hot air definitely comes out the exhaust.

Can anyone with a BB1260 and the remote tell me what typical temperatures are when running?

I got this off eBay and it was advertised as "working". It sort of works but seems like I am having more than my share of issues. Maybe something is not quite right.

Regards,

Mark
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Old 04-22-2019, 03:50 PM   #2
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Default Re: Sterling BB1260 Running 80C+, Normal?

Here are some measurements:

In V____In I___In W__Out V___Out I__Out W_Temp C_Efficiency
13.5___61.0___824___13.70___46.8___641_____40_____ 0.78
13.4___63.6___852___13.74___46.8___643_____50_____ 0.75
13.3___64.4___857___13.74___47.4___651_____60_____ 0.76
13.5___42.0___567___13.65___33.0___450_____70_____ 0.79

Regards,

Mark
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Old 04-22-2019, 06:26 PM   #3
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Default Re: Sterling BB1260 Running 80C+, Normal?

How big is the battery bank?
What's its current state of charge?
(i'm wondering if it's "over drawing" from the BB)

What does BB say about the expected operating temperatures?

Is there a thermal sensor at the batteries that's perhaps feeding back a "slow down a bit" signal?

Your "watts in" and "watts out" show that 200 watts are being dumped inside the BB1260, that would be a definite source of heat.
A lossy component (leaky diode?) might be the "why"

--dick
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Old 04-22-2019, 07:00 PM   #4
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Default Re: Sterling BB1260 Running 80C+, Normal?

Sounds like repair may be called for.

What is ambient? degrees above that is really the measure, not absolute.

Also contact Sterling support for your location, if they are not responsive,

Charles Sterling <charles@sterling-power.com>

Are you still in the eBay refund window?
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Old 04-22-2019, 07:03 PM   #5
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Default Re: Sterling BB1260 Running 80C+, Normal?

Quote:
Originally Posted by autostaretx View Post
How big is the battery bank?
What's its current state of charge?
(i'm wondering if it's "over drawing" from the BB)

What does BB say about the expected operating temperatures?

Is there a thermal sensor at the batteries that's perhaps feeding back a "slow down a bit" signal?

Your "watts in" and "watts out" show that 200 watts are being dumped inside the BB1260, that would be a definite source of heat.
A lossy component (leaky diode?) might be the "why"

--dick
400 AH of LiFEPO4s. There is no external thermal sensor on the batteries. They have a BMS that will shut down charging if they get hot, but they are not.

I agree that 200W sounds like a lot. I would expect more like >80% efficiency, but was hoping someone else with one, or the company could tell me if this was typical. I haven't heard back yet.

Regards,

Mark
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Old 04-22-2019, 07:05 PM   #6
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Default Re: Sterling BB1260 Running 80C+, Normal?

Good point on the battery temperature sensor.... if it is even hooked up. The temperatures in your chart never reach 80 C. It could be that the alternator is cutting back, not the Sterling. Can you determine that? The chart doesn't indicate half power .... or it could be that what you posted is not what you observed (i.e. there is additional data that you didn't post). I just put in a new BB1260 and have not driven enough to be able to report on my Sterling's behavior. I really wish I got the remote, but can easily add that later if I need to. With the Victron monitor I will be able to see what the amps going into my house batteries is. Keep us posted.

So, do you have a clamp-on current meter that you could clamp around the chassis (vehicle) battery incoming battery cable? It would be interesting to see what the alternator charge current really is for both vehicle battery and Sterling.
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Old 04-22-2019, 07:08 PM   #7
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Default Re: Sterling BB1260 Running 80C+, Normal?

Used eBay sale?
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Old 04-22-2019, 07:10 PM   #8
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Default Re: Sterling BB1260 Running 80C+, Normal?

OK, missed a couple of posts while I was typing. Is the Sterling being kept in a open area with decent ventilation?
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Old 04-22-2019, 07:21 PM   #9
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Default Re: Sterling BB1260 Running 80C+, Normal?

Quote:
Originally Posted by OrioN View Post
Used eBay sale?
Yes, a used eBay sale.

Quote:
Originally Posted by hoosierrun View Post
OK, missed a couple of posts while I was typing. Is the Sterling being kept in a open area with decent ventilation?
It does have some other stuff around it, so the ventilation is not perfect.

Quote:
Originally Posted by hoosierrun View Post
Good point on the battery temperature sensor.... if it is even hooked up. The temperatures in your chart never reach 80 C. It could be that the alternator is cutting back, not the Sterling. Can you determine that? The chart doesn't indicate half power .... or it could be that what you posted is not what you observed (i.e. there is additional data that you didn't post). I just put in a new BB1260 and have not driven enough to be able to report on my Sterling's behavior. I really wish I got the remote, but can easily add that later if I need to. With the Victron monitor I will be able to see what the amps going into my house batteries is. Keep us posted.

So, do you have a clamp-on current meter that you could clamp around the chassis (vehicle) battery incoming battery cable? It would be interesting to see what the alternator charge current really is for both vehicle battery and Sterling.
I am using a clamp meter to measure current. I could connect it up front to see the currents there too. The temperature gets to about 80C it cuts back to 1/2 power and the temperature comes back down to about 70C and the cycle repeats. I just did not happen to get a measurement of everything at 80C before it cut back on the power. It displays 1/2 on the remote, so I think it is the Sterling that is cutting back. You can see the cycling, temp above 80C, switch to 1/2 power, cool down, switch to full power, repeat.

Regards,

Mark
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Old 04-22-2019, 07:42 PM   #10
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Default Re: Sterling BB1260 Running 80C+, Normal?

Reading my manual, it says output is reduced when charger temp reaches 90 degrees C. It will alarm and shut down at 100 degrees C. I wonder if they made a change or improvement? I just bought a brand new unit and only put it in a few days ago. If there is any way your unit is returnable, it might be worth it if it is going to be an issue.... or you could try to call Sterling to see what they say.
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