Author Topic: Neutral line fault detector NFP-1801?  (Read 463 times)

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Offline nardev

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Neutral line fault detector NFP-1801?
« on: April 27, 2021, 03:14:59 am »
Hey guys,

I'm just curious what do you think about this device "NFP-1801" by "Elektronska industrija Niš".

I can't find anything similar by any other manufacturer. Is it something that you would install in your fuse box?

Essentially in case of N line cutoff it shuts down the FID/Safety switch in fuse box.

There is a video demonstration but it's not in English, though the demonstration is pretty clear.

https://youtu.be/50DNhf6F0CY
 

Offline f4eru

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Re: Neutral line fault detector NFP-1801?
« Reply #1 on: April 27, 2021, 11:18:44 am »
Clever device.

But:
1) It is not certified for any EU country. Probably not allowed in a lot of them. Won't recommend.
2) neutral fault is extremely uncommon in most countries, it's not needed in fact
3) not sure if protected/safe from a few aspects, would like to see the inside
4) Would probably have false positives in situation like lightning
5) does not protect downstream (3-phase home only)
 
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Offline nardev

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Re: Neutral line fault detector NFP-1801?
« Reply #2 on: April 27, 2021, 12:15:28 pm »
In regards to certification, the guy have mentioned that they have got all required certs for Serbia, which actually since JUS (Jugoslavia Standards) is actually pretty strictly following EU standards. So i would not be surprised if they make all required testings and get certified.

It's pretty new product, i might get one if someone is willing to make a proper review video?
 

Offline f4eru

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Re: Neutral line fault detector NFP-1801?
« Reply #3 on: April 27, 2021, 01:58:17 pm »
hmm.. No CE marking. does not look good yet for compliance, but they will probably improve that over time.

Offline nardev

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Re: Neutral line fault detector NFP-1801?
« Reply #4 on: April 27, 2021, 02:04:44 pm »
Certifications aside, i was primarily wondering how useful such protection could be.

I guessing as nobody made it already, for all those years, so is it something worthy of installing. 
 

Offline f4eru

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Re: Neutral line fault detector NFP-1801?
« Reply #5 on: April 27, 2021, 04:24:44 pm »
it may be useful in countries with bad electrical infrastructure, where shoddy neutral connection is a real risk.
Elsewhere, it's just not worth the trouble.
 
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Offline mikeselectricstuff

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Re: Neutral line fault detector NFP-1801?
« Reply #6 on: April 27, 2021, 05:14:33 pm »
In the UK, the wiring regs stipulate than an external EV chargepoint on an installation with TN-C-S earthing must have either a ground rod or  a device that isolates all 3 conductors in the case of a neutral fault (PEN fault)
This is to prevent the body of a plugged-in EV becoming live in the event of a neutral fault

This is a similar device : https://matt-e.co.uk/
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 
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