Voltage Surge Counter. Monitor your SPD's for Lightning and Grid Surges!
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- Опубліковано 7 чер 2024
- Hi, in this video I am showing you a new gimmick. Ever heard from a Lightning Strike Counter?
This is the device (non-affiliated!):
www.aliexpress.com/item/10050...
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Thanks Roland, handy device for diagnosing remote equipment faults like generators , Change over switches and why the Generator control mother boards are blowing up in a storm. Good also for working out mechanical ware and tear on your surge protection.
Andrew Nz
Gute Reise und einen schoenen Aufenthalt in der Heimat .
Danke Kostas!
Roland, I recommend you edit the title of the video to get more views and visitors. Example, "Surge Counter device for SPD caused from Lightning Strikes or Power Grid". The additional keywords will help in getting more exposure online.
will do. thanks
Hi Roland , interessant diese Präsentation. Danke
Wenn man den Faden weiter spinnt wäre doch ein potentialfreier Kontakt gut um zum Beispiel über ein Schütze die Anlage vom Netz zu trennen.
Was denkst Du ? Man sitzt in der Regel ja nicht vor dem Gerät und wartet,man wertet nur aus und weiss ok es gab Überspannung bzw. Überströme.
Gruss und viel Spass in Ö.
@@frankkaufmann9184 naja, das sind ja solche Spannungschutzrelais, etc wie ich sie für die Wechselrichter eingebaut habe. Das Problem bei solchen Schütz-basierenden Sutzsystemen ist, dass sie für Überspannungen von Blitzen und Schaltvorgängen im Netz, viel zu langsam reagieren. Da gehts ja um Micro- und Millisekunden. In Kombination haben aber alle diese Geräte ihre Berechtigung und können gute Ergebnisse bringen.
@@RolandW_DIYEnergyandMore Simmt !!! da hast Du recht mit dem Faktor Auslösezeit
Roland, I do not consider the counter as a gimmick. It will be a helpful tool to determine just how many surges a SPD can tolerate before needing to be replaced. I suggest you measure and record the current resistance of the SPD between all inputs to earth, then measure again once the SPD fails. Then tabulate and graph the resistance values with the surge counter device, to show approx lifepan and number of times the SPD can divert the surge before failing. This information will be helpful to everyone that is using SPDs in their systems. As you said, the SPD manufactures do not give an estimate on how many times the SPD can divert the energy before failing. So, you can give an approx estimate. It will obviously not be the same for every surge energy, as voltages and current can vary, but the information will be better than nothing.
Ideally, to determine the lifespand of a SPD controlled experiments should be done. Such as, intentionally expose the the SPD to a very high voltage at intervals of 5 second bursts every one minute till failure. Then do it again with another SPD with low voltage with same conditions. Then once it has been determine how many high and low voltage surges a typical SPD can handle, the surge counter device can be useful to determine when a SPD is needed to be replaced.
Yeah. I was just thinking it is a gimmick because there are just to many variables which you do not know when there was an activation. Maybe it will show something. Let's wait and see :)
@@RolandW_DIYEnergyandMore The counter device is a gimmick up till you need to replace the SPD, then the counter device will help determine a very rough estimate as to how many times your installed SPD can tolerate a typical surge. It will still not help to know if the surge is caused by upstream lightning strike or power plant related, but it is better than nothing.
I look forward to future updates about this counter device and when your 3 phase SPD fails. WIll be interesting to know how many times your SPD can tolerate diverting. My wild guess is your 3 phase SPD will divert surges 30 times before failing, if the voltage spikes are between 1000V to 10,000V above your nominal system voltage.
im in a country with a TT earthing system. i had a SPD leaking a minor amount of current to ground for a whole month until the bill came. the indicator did not turn red but the SPD had started to go bad. probabaly due to dissipating several surges from the grid. now i have installed a 2pole 32A type A RCBO as the shortcircuit/overcurrent protection for the SPD. the SPD L/N is connected parallel to the output L/N terminals of the RCBO. so now in case the SPD starts to leak to ground without the indicator going red, i will know due to the RCBO tripping due to the imbalance in the current flow. would love to hear your thoughts about employing an RCBO as a way to find out when SPDs start to go bad. obviously this wont be the right solution for premises that require uninterrupted power supply. cheers!
Hi. Your thought process is correct, but the reason why SPDs are installed before any RCDs is that surges do not trip the RCDs, which would now happen. Did you measure the leakage current on your defective SPD? It would be interesting to know how much it was. Probably one should really check them from time to time 🤔
@@RolandW_DIYEnergyandMore the leakage was something like 650mA if I remember correctly. if the next leak is below 30mA, worse case would be a loss of 165watts per day which would be insignificant. the only real question is if a MOV that starts to leak prematurely would still be able to dissipate/shunt transient voltage spikes of many thousands of volts?
another thing, reason I thought of using an RCBO for SPD leak detection is that RCD reaction time is in the millisecond range and the MOV reaction time is in the nanosecond range. so the RCBO would not trip during an actual surge event and it would have sufficient time to send the current to ground (which could be a parallel path to source). the RCBO would only trip if there's premature continuous leaking due to MOVs going bad. at least that is my theory 😊
@@duznt-xizt strange, I would have expected the MOV to burn out at such high permanent currents as it is just a piece of plastic. Good to know though. The RCD solution will prevent such cases. The device should hold still for most of the surges (Type 3 SPD= MOVs built in into appliances) but I would still expect it to trip at least when there are more energetic surges cause by lightning involved.
Its wort a try :)