Flickering voltage at my new hostel « on: September 08, 2018, 11:16:34 AM » Author: dor123
As soon as I arrived to my room at my new hostel Thursday 7.8.2018, at the evening, I've noticed that all of the lights at my room, flickering. Video: https://www.youtube.com/watch?v=uDLt8LKfOa0 I opened my UPS monitor software to see what happening to the voltage in my room: This don't happens in the rest part of the hostel. Whats happening? Update: This is happens in all of my hostel. I've noticed that the LED fixture in my hostel kitchen and the F6T5/BL of the bug-zapper, flickering as well.
« Last Edit: September 08, 2018, 11:39:16 AM by dor123 »		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: Flickering voltage at my new hostel « Reply #1 on: September 09, 2018, 02:14:07 AM » Author: dor123
Voltage stabilized for now: Also: It seems that this is a brownout, since I called 103 service of the Israeli Electric Corporation, and they said that there is a major electricity problem in my area.
« Last Edit: September 09, 2018, 02:18:42 AM by dor123 »		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: Flickering voltage at my new hostel « Reply #2 on: September 09, 2018, 02:52:06 PM » Author: Medved
Isn't the flickering related to some heavy loads (like elevator starts, AC thermostats, some near by construction equipment activity,...) near by? Otherwise it could be some bad connection somewhere. Because it is very likely on the utility side (it is common for the building, so most likely in the installation upstream from the individual meters), it is to be reported there. Not because of the flickering itself, but because the eventual loose connection (if this would be the reason) could become a fire hazard.
		Logged

No more selfballasted c***

	Re: Flickering voltage at my new hostel « Reply #3 on: September 09, 2018, 03:28:05 PM » Author: dor123
There is a construction site near my new hostel, but I don't think it is related.
		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: Flickering voltage at my new hostel « Reply #4 on: September 09, 2018, 05:08:13 PM » Author: RyanF40T12
might be someone's Air Conditioning turning on and off.. or some other major appliance in your building turning on and off..
		Logged

The more you hate the LED movement, the stronger it becomes.

	Re: Flickering voltage at my new hostel « Reply #5 on: September 10, 2018, 01:07:39 AM » Author: dor123
This not looks like caused by appliances. You can see in the video that the lights flickering at a constant rate, as if it is a brownout.
		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: Flickering voltage at my new hostel « Reply #6 on: September 10, 2018, 01:15:24 PM » Author: Medved
The flickering rate looks on the video as something as I would expect from starting a construction crane winch, so the construction site. They are very likely connected to different feed, but very likely to the same 22kV line. Because these cranes tend to have really high inrush currents, it may easily influence the 22kV. Their own voltage will of course fluctuate way more, but they don't care (they are most likely used to that, as it will happen nearly anywhere they were ever working)
		Logged

No more selfballasted c***

	Re: Flickering voltage at my new hostel « Reply #7 on: September 10, 2018, 01:34:32 PM » Author: dor123
They don't uses a crane in the construction site but crane trucks.
		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: Flickering voltage at my new hostel « Reply #8 on: September 10, 2018, 01:52:47 PM » Author: Medved
And any elevators, conveyors, on site cement mixers? Or it could be somewhere else in the district (some larger machining shop,...). Just shock loading of an asynchronous motor may easily cause rather high current surges (I had issues on my own - the wood chipper caused voltage dips so severe the MV fixture on the same phase often extinguished on them) At work I have recently noticed rather irregular flickering of the fluorescents (in sync in the whole room, even among two rooms), our building is fed by 22kV, has its own 22kV/400V transformer. But again, it could be some other 22kV customer on the same feed cable, we have scrap metal collecting and processing facility (chopper, some separation machines, maybe even some smelting of lower temp metals), they are upstream the 22kV cable towards the 220(?)kV/22kV transformer station...
« Last Edit: September 10, 2018, 01:55:41 PM by Medved »		Logged

No more selfballasted c***

	Re: Flickering voltage at my new hostel « Reply #9 on: September 10, 2018, 01:57:38 PM » Author: dor123
The voltage also flickeing at evening and night, when the construction building, isn't open. So I don't think it is related to the flickering.
		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: Flickering voltage at my new hostel « Reply #11 on: September 12, 2018, 01:32:32 AM » Author: dor123
Seems that the voltage stabilized for now, as when I returned to my hostel yesterday, the lights was stable, and they are stable even for now, and the voltage don't drop below 220V. Looks like some form of slight brownout.
		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.