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Re: Isolation Monitor - Suggestions?
Posted: Thu Dec 28, 2023 12:33 am
by Zieg
Any progress on any of the various fronts here? It's looking more and more like the SCCA is going to be requiring these for all forms of racing.
Re: Isolation Monitor - Suggestions?
Posted: Thu Dec 28, 2023 12:24 pm
by tom91
Zieg wrote: ↑Thu Dec 28, 2023 12:33 am
Any progress on any of the various fronts here? It's looking more and more like the SCCA is going to be requiring these for all forms of racing.
I do not think the SCCA will accept a homebrew solution for a system this critical. So best bett would be to figure out if there is a American distributor of a Bender unit.
Re: Isolation Monitor - Suggestions?
Posted: Fri Jan 05, 2024 5:59 am
by RetroZero
I will get back to Bender this week. They asked for a description of my project and possible opportunities in the future.... I guess they want to see if its worth their while or if this is a one off. I will incorporate the ISA shunt as the alternative and reference. That way I can compare "apples with apples"
Re: Isolation Monitor - Suggestions?
Posted: Fri Jan 05, 2024 3:08 pm
by Zieg
During my research (googling part numbers, really) I found a lot of references to the Bender ISO165/175 units being used in Formula SAE. Some teams said they were sponsored by Bender and provided new hardware each season.
I then found an ISO165C-1 on ebay for $400 CAD and decided to take a chance in it. Should be here by month's end.
There are also some other Bender isometers on ebay, including the ISO-CHA-425 which looks like it could work, but it requires 24vdc to operate. Other versions of the same thing seem to be available for 12vdc, but on the HV side they are only rated to 300v.
Re: Isolation Monitor - Suggestions?
Posted: Mon Apr 22, 2024 12:47 am
by nickyivyca
I found a stash of IR155-3210 for sale for cheap on Ebay.
https://www.ebay.com/itm/196329086628
This seems to be the same base hardware as the IR155-3204 but sold for chargers instead of vehicles.
I've found a couple different datasheets for the 3210:
https://pamir.com/wp-content/uploads/20 ... 012821.pdf
https://www.bender.de/fileadmin/content ... D_XXEN.pdf
It's hard to tell if the differences are just in certifications and such, or if there's actually a configuration difference to the device. The second 3210 datasheet mentions the 'AMP' monitoring as opposed to 'DCP' measurement, but then the first 3210 datasheet mentions both so maybe they're interchangeable.
The 3204 datasheet I have only mentions DCP.
Re: Isolation Monitor - Suggestions?
Posted: Sat May 04, 2024 12:48 am
by nickyivyca
Comparing the 3210 to a 3204, the only difference is the missing ferrite bead (I think that's what that is) on the bottom left corner of the board, and the label applied to the brick. (The Nano-fits on the 3204 were a manual modification and not how it originally came, borrowed board from my old FSAE team to compare)
I'm guessing D,10 and A,1 are the different parameters. If the 1 is the Fave number then that would mean the 3210 is just more reactive than the 3204.
Plan to install in my 914 as part of the next round of upgrades, we'll see how soon that happens.
Re: Isolation Monitor - Suggestions?
Posted: Sun Jan 05, 2025 11:30 pm
by thomaa
nickyivyca wrote: ↑Sat May 04, 2024 12:48 am
PXL_20240430_050329480.jpg
Comparing the 3210 to a 3204, the only difference is the missing ferrite bead (I think that's what that is) on the bottom left corner of the board, and the label applied to the brick. (The Nano-fits on the 3204 were a manual modification and not how it originally came, borrowed board from my old FSAE team to compare)
I'm guessing D,10 and A,1 are the different parameters. If the 1 is the Fave number then that would mean the 3210 is just more reactive than the 3204.
image.png
Plan to install in my 914 as part of the next round of upgrades, we'll see how soon that happens.
Did you end up installing the 3120? I'm currently looking for a solution for isolation monitoring and this seems the most accessible.
Re: Isolation Monitor - Suggestions?
Posted: Mon Jan 06, 2025 10:37 pm
by LRBen
I found a Chinese firm doing these:
https://cqbluejay.com/product/gyid-ev-dmd/
I can't remember the exact price but I think it was around £150 including shipping to the UK. But that was for five of them.
Edit: Added actual words.
Re: Isolation Monitor - Suggestions?
Posted: Sun Sep 14, 2025 7:29 pm
by muehlpower
The new Isabellenhütte IVT 3 pro has an integrated insulation monitor. At around €300, it is cheaper than anything from Bender! Has anyone already used it, or does anyone know the CAN messages?
Re: Isolation Monitor - Suggestions?
Posted: Mon Sep 15, 2025 3:36 pm
by muehlpower
I ordered a sensor from DigiKey. It seems that I will get the necessary CAN data from Isabellenhütten.
Re: Isolation Monitor - Suggestions?
Posted: Mon Sep 15, 2025 4:19 pm
by modellfan
Weired. The older one had the can protocol pretty sure in the data sheet. Looks very promising. Inkl 6 voltage channels and wh counting.
Let me know , if you have the real datasheet and need support implementing it in zombieVCU.
Re: Isolation Monitor - Suggestions?
Posted: Mon Sep 15, 2025 5:12 pm
by muehlpower
modellfan wrote: ↑Mon Sep 15, 2025 4:19 pm
need support implementing it in zombieVCU
Thanks for the offer, but I don't use a Zombie. I currently have the IVT-S installed with 3-volt inputs. The new one I ordered also only has 3. The Wh and Ah measurement restarts when the supply voltage is switched off. To use it effectively, you must therefore always leave the IVT connected to the power supply or save the value in the VCU, for example, before switching it off.
Re: Isolation Monitor - Suggestions?
Posted: Tue Sep 16, 2025 9:28 am
by muehlpower
Warning!!
Isabellenhütten has informed me that the sensor sold by DigiKey does not measure insulation. The type designation must have an “R” after the “I,” e.g., “IVT-3-1K-U6-IR-CAN2-12.”
Re: Isolation Monitor - Suggestions?
Posted: Tue Sep 16, 2025 9:54 pm
by jrbe
Have you found the "R" version anywhere?
Re: Isolation Monitor - Suggestions?
Posted: Wed Sep 17, 2025 7:02 am
by modellfan
According to the datasheet just the pro version can Donte Isolation Monitoring
Re: Isolation Monitor - Suggestions?
Posted: Wed Sep 17, 2025 1:39 pm
by muehlpower
According to the data sheet, there is no Pro version “without” insulation measurement. Likewise, there is no Base version “with” voltage measurement. DigiKey offers both the Base and Pro versions, from which I concluded that the Pro version available there has insulation measurement. However, this is not the case. Pre-production samples can be requested from Isabellenhütten.
Based on this description, there appear to be three versions!
Re: Isolation Monitor - Suggestions?
Posted: Wed Oct 29, 2025 10:05 am
by modellfan
Do you have a full datasheet? The datasheet I can find does not show the dimensions and the CAN Messages. I need to check, if I can squeeze it in my Contactor Box.