How are mobile phone masts powered?

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subaqua

What’s the point
Location
Leytonstone
The base site power supply units take their power from the mains and are provided with back up batteries which will last a few hours. There would not normally be a back up generator at a mast, unless it was a particularly important site. As Gordon says, 'data centres' and other facilities futher up the hierarchy will have generator back up.

but they all have a plug and socket arrangement similar to the old BS4343industrial type ( commando is one manufacturers brand name) ready for a generator to be installed if the power is off long term. its big bucks so they don't like them off for any length of time.

causes a nightmare when we have planned shutdowns in buildings as it is the mobile operator who has final say due to the rent they pay for the roof space
 
The base site power supply units take their power from the mains and are provided with back up batteries which will last a few hours. There would not normally be a back up generator at a mast, unless it was a particularly important site. As Gordon says, 'data centres' and other facilities futher up the hierarchy will have generator back up.

I've done a couple of assessments for masts, both near major cities and clearly critical nodes, but you're right in saying most don't have standby generators. Data centres on the other hand sometimes have multiple levels of redundancy. The same goes for other areas of infrastructure such as water pumping stations, almost all critical ones have standby generator systems, often used in permenant grid feed mode to try to recoup some of the capital cost. Pity they are usually located in quiet areas of the countryside exactly where you don't want a generator running 24/7!

Gordon
 

machew

Veteran
That warning makes me laugh, much like "warning: contents may be hot" on a McDog coffee cup or "warning: may contain nuts" on a packet of dry roasted.
Pedant Alert -- Peanuts are not nuts, it is a legume.
 

YahudaMoon

Über Member
My last power cut experience resulted in total darkness in the office kitchen, someone recommended opening the fridge so we could see where we were going lol
 

Globalti

Legendary Member
I recently got involved in helping a Nigerian customer to import some almost unused generators, which had been on standby duty at various Vodafone masts around the country. Vodafone have decided to replace lots of smaller gens with a few bigger ones, linked together to power a number of masts in an area so there are lots of almost unused gens for sale, around 450 kva if I recall, most of which will end up in Nigeria.

(In Nigeria there is virtually no pubic electricity supply and no long-term plans for one either because certain ministers are getting so fat off kickbacks from the importation of generators.)
 

tyred

Squire
Location
Ireland
That warning makes me laugh, much like "warning: contents may be hot" on a McDog coffee cup or "warning: may contain nuts" on a packet of dry roasted.

You'd be surprised how silly some people can be. I work in Telecoms, form the point of view of providing business phone systems and many times customers have complained that their phone systems have gone down and it turns out they're having a power cut...
 

ColinJ

Puzzle game procrastinator!
You'd be surprised how silly some people can be. I work in Telecoms, form the point of view of providing business phone systems and many times customers have complained that their phone systems have gone down and it turns out they're having a power cut...
Ha ha - reminds me of this old story!

This is a true story from the WordPerfect Helpline, which was transcribed from a recording monitoring the customer care department. Needless to say the Help Desk employee was fired.

Actual dialogue of a former WordPerfect Customer Support employee:


Operator: ‘Ridge Hall, computer assistance; may I help you?’

Caller: ‘Yes, well, I’m having trouble with WordPerfect.’

Operator: ‘What sort of trouble?’

Caller: ‘Well, I was just typing along, and all of a sudden the words went away.’

Operator: ‘Went away?’

Caller: ‘They disappeared’

Operator: ‘Hmm. So what does your screen look like now?’

Caller: ‘Nothing.’

Operator: ‘Nothing?’

Caller: ‘It’s blank; it won’t accept anything when I type.’

Operator: ‘Are you still in WordPerfect, or did you get out?’

Caller: ‘How do I tell?’

Operator: ‘Can you see the ‘C: prompt’ on the screen?’

Caller: ‘What’s a sea-prompt?’

Operator: ‘Never mind, can you move your cursor around the screen?’

Caller: ‘There isn’t any cursor; I told you, it won’t accept anything I type.’

Operator: ‘Does your monitor have a power indicator??’

Caller: ‘What’s a monitor?’

Operator: ‘It’s the thing with the screen on it that looks like a TV. Does it have a little light that tells you when it’s on?’

Caller: ‘I don’t know.’

Operator: ‘Well, then look on the back of the monitor and find where the power cord goes into it. Can you see that?’

Caller: ‘Yes, I think so.’

Operator: ‘Great. Follow the cord to the plug, and tell me if it’s plugged into the wall.’

Caller: ‘Yes, it is.’

Operator: ‘When you were behind the monitor, did you notice that there were two cables plugged into the back of it, not just one? ‘

Caller: ‘No.’

Operator: ‘Well, there are. I need you to look back there again and find the other cable.’

Caller: ‘Okay, here it is.’

Operator: ‘Follow it for me, and tell me if it’s plugged securely into the back of your computer.’

Caller: ‘I can’t reach.’

Operator: ‘OK. Well, can you see if it is?’

Caller: ‘No.’

Operator: ‘Even if you maybe put your knee on something and lean way over?’

Caller: ‘Well, it’s not because I don’t have the right angle – it’s because it’s dark.’

Operator: ‘Dark?’

Caller: ‘Yes – the office light is off, and the only light I have is coming in from the window.’

Operator: ‘Well, turn on the office light then.’

Caller: ‘I can’t.’

Operator: ‘No? Why not?’

Caller: ‘Because there’s a power failure.’

Operator: ‘A power … A power failure? Aha. Okay, we’ve got it licked now. Do you still have the boxes and manuals and packing stuff that your computer came in?’

Caller: ‘Well, yes, I keep them in the closet.’

Operator: ‘Good. Go get them, and unplug your system and pack it up just like it was when you got it. Then take it back to the store you bought it from.’

Caller: ‘Really? Is it that bad?’

Operator: ‘Yes, I’m afraid it is.’

Caller: ‘Well, all right then, I suppose. What do I tell them?’

Operator: ‘Tell them you’re too stupid to own a computer!’
 

dellzeqq

pre-talced and mighty
Location
SW2
(In Nigeria there is virtually no pubic electricity supply and no long-term plans for one either because certain ministers are getting so fat off kickbacks from the importation of generators.)
thank heavens!
 

Ethan

Active Member
I bought a pack of smoked salmon recently and there was a warning that it might contain fish!

Back when I was still forced to do cooking in school, we were learning all about eggs.
In the front of the class, next to the teachers desk there was a large pile of egg boxes - We were all dying to get our hands on them and start the days intellectual activities about the humble egg (:whistle: something like that anyway!).
The egg boxes made their way around the room, until we all hand one. To mine and my friends amusement, his box carried the warning, and I kid you not, 'Contains Eggs'. You can imagine the hilarity of the situation to two pretty badly behaved 14 year old lads.

We ended up in the head of years room for the rest of the lesson.


What that has to do with the OP, I don't know.
 
Ha ha - reminds me of this old story!

This is a true story from the WordPerfect Helpline, which was transcribed from a recording monitoring the customer care department. Needless to say the Help Desk employee was fired.

Actual dialogue of a former WordPerfect Customer Support employee:


Operator: ‘Ridge Hall, computer assistance; may I help you?’

Snipped the rest

Like so many of these tales, only partly true see http://www.snopes.com/humor/business/wordperfect.asp
 

ColinJ

Puzzle game procrastinator!
Like so many of these tales, only partly true see http://www.snopes.com/humor/business/wordperfect.asp
I did think of checking the story but never got round to it!

Snopes said:
Unplugging something vital to the computer's operation to free the outlet for a tea kettle or toaster, causing a company-wide server crash day after day.
I was working late one evening, along with several colleagues. We had been beavering away for hours on our computers, trying to get the latest version of software ready to release. The sound of cooling fans and hard disk drives gradually became drowned out by a more raucous sound - vacuum cleaners - the cleaning ladies were doing their rounds.

Suddenly, our screens went blank and the fans and hard drives slowed to a stop. A strangled cry went up from the desk behind me...

I looked round and saw a shocked cleaner standing there with 2 power leads in her hands, one for her vacuum cleaner and the other to the extension lead powering our computer systems!

Between us, we lost a lot of work. After that, the cleaners were given strict instructions never to unplug anything without asking first, and we gaffataped the extension lead plug in place with a "DO NOT UNPLUG! " note attached to it!
 
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