Lister Engine Forum

General Category => General Discussion => Topic started by: ajaffa1 on November 28, 2018, 07:24:10 AM

Title: Power outages
Post by: ajaffa1 on November 28, 2018, 07:24:10 AM
Hi Guys, another massive power outage. The power is out for about 300 km up and down the coast from Urunga to just north of  Lismore. So much for the gold standard poles and infrastructure promised to us when they privatized the distribution network. Guess all the executives are too busy investing their ill gotten and drinking champagne to worry about the customers they are supposed to service. Third outage in the last month.

Fired up the old ST2 and we now have power, I`ll be having a nice warm shower while everyone else will be going to bed dirty. I have phoned a few neighbors and invited them to come round.

Got to worry about the guys in Queensland who are facing catastrophic bush fires, with unprecedented threat to life and property, hoping they are not getting the  80 Km winds we are.

Got to go check the genny isn`t leaking oil or fuel.

Bob


Title: Re: Power outages
Post by: glort on November 28, 2018, 08:51:07 AM

We have had 79mm of rain here in well under 24 hours.  far and away the best rainfall  we have had since we have arrived. Hard to imagine there are bushfires anywhere let alone 1000Km or so away.  Our plan this year was to go back to Cairns  a bit later, as in now, than we did last year. NZ came up so plans changed. Maybe for the better.

Saw water gushing down the Drainage ditch out the front this morning, Didn't know whether to go get a pump and send it back up the front lawn or knock something together to fill an ambition to play with Micro Hydro. We have had the winds last week but apparently are in for more. I hate wind with a passion.
Does nothing but destroy and make a mess. Still leaves and branches all over the yards I haven't got to.

When I heard about the coming rains yesterday I happened to look up and see the gutters full of leaves again. I cleaned them the week before we went away, less than a month ago.  They were chockers again so got the blower and ladder out and spent a few hours up and down cleaning them again.  Bought some leaf guard to pit in the gutters but it was crap and didn't bother with it. Got some more that seems better but haven't got to it yet. Obviously going to be a priority.

Had a power failure here yesterday and again today.  Self inflicted.
The south facing solar array that is on the shed was supposed to be temporary and we all know nothing is as long lived or permanent as " Temporary". As such the DC wiring is a bit cobbled together and must have broken down and letting water into the connections. Clearly there is some earth leakage going on which the RCD doesn't like.
Shut all the solar down late yesterday when it tripped although I suspected my ground mount system and checked the main ones.  Put it back on this morning and after a couple of hours, all the lights went out again. Going to have to change the all in one RDC to individuals. Of course I could just fix the solar wiring but what fun would that be??   :laugh: Works fine in the dry so probably won't have to worry again for another 6 weeks at least.

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I`ll be having a nice warm shower while everyone else will be going to bed dirty. I have phoned a few neighbors and invited them to come round.

Oh, OK..... I have heard of some of those more Liberal, Hippy " free love" communities up your way. Didn't realise you were one of those sharing types. Can't say I have ever been inclined to shower with my neighbors but maybe yours are a lot better looking and younger than mine ever have been?.

Sitting here now I see the sky clearing and a sunset off the clouds. I hope the rain travels north and puts out the fires.
I wanted to move to Qld but geez it seems a tough place. If it's not floods it's drought, if it's not Drought it's fires. I't like they have a state Catastrophe every year in some form.

Enjoy showing off the your lister to the neighbours and your other " Equipment" Bob.  Don't forget to repeatedly point out to the Mrs every 15 min  the power is still off and aren't you lucky you did that generator and how important the one you are working on will be for backup.
Might pay to pour her a cold drink pointing out the frigde is working, put her favourite show on the TV and turn on the AC just for good measure pointing out the rest of the neighbours can't do that.  :angel:
Title: Re: Power outages
Post by: glort on November 28, 2018, 09:00:52 AM

I was just reading up on the fires and saw this:

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The State Government has announced packages ranging from $180 for individuals and up to $900 for families who have lost their homes or possessions.

What the FK is $180 going to buy a person or $900 a family whom have lost everything?
A spare change of clothes so they have something besides what's on their Backs?

I think the straight Gubbermint would be less insulting to people to offer nothing.

I'll say no more less I get into another feature length rant.
Title: Re: Power outages
Post by: LowGear on November 28, 2018, 04:58:32 PM
When we first moved to the farm I was all excited about installing a backup generator.  As I was shopping for disconnect switches my favorite electrical equipment salesman asked kind of the same questions.  "How often does the power go off?" and "How long are those episodes?".  I decided to live here for six months and see.  We have better service out here 20 miles from town than we had back in the suburbs of Seattle.
Title: Re: Power outages
Post by: BruceM on November 28, 2018, 05:21:44 PM
I've been doing some research on power co. grounding practices around the world. 

Bob's comment:
''The power is out for about 300 km up and down the coast from Urunga to just north of  Lismore. So much for the gold standard poles and infrastructure promised to us when they privatized the distribution network. Guess all the executives are too busy investing their ill gotten and drinking champagne to worry about the customers they are supposed to service. Third outage in the last month.''

reminded me that Australia, most of the US, and Canada are the worst offenders in the world.  They all use T-NC (terra-neutral connected) with "MEN-  multiply earthed neutral" of the distribution neutral, and bypass transformer isolation in order to use the customer's grounding for their distribution line.  This is an abomination from the 1920's, which allowed the power co.s to save a few bucks by connected their lines to the customer water pipes (at the expense of customer safety and hugely elevated magetic fields).

This causes magnetic fields in homes and yards 100x higher than need be.  To then add a digital meter to this 1920's tech abomination and call it "smart" is like adding a digital pulse rate monitor on a horse pulling a buggy. 

Many other countries use WYE distribution with proper single point grounding of the neutral to avoid injecting current through the earth and aquifers.  They use RCD main service breaker and independent earth connection for the home earth connection.  This is called T-T (terra-terra) grounding and is the fastest growing system, worldwide.  If you wanted to improve your countries grid, you should be bellowing for this, or  I-T grounding, which is isolated, non-grounded lines- aka Delta, with earth grounding of the secondary (customer) neutral.  A few older cities in the US still use Delta, or I-T grounding, but 90% of the US is the abominable T-NC.

Privatized energy systems suffer the worst from the "race to the bottom" for service of lines, customers and customer health.  But they do make nice fat profits for shareholders and their executives.  It's interesting that as far as I can find so far, no nationally owned grid system in the world uses the abomination of T-NC grounding practice.

Based on the independent research from the 70's through today, the cost of this basic infrastructure grounding practice in public health misery and costs is huge. 






Title: Re: Power outages
Post by: glort on November 29, 2018, 12:27:27 AM

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If you wanted to improve your countries grid, you should be bellowing for this, or  I-T grounding, which is isolated, non-grounded lines-

You have no idea of the grid here Bruce.
Tens of thousands of people literally are bellowing just to try and get their power within the spec voltages it should be and I'm not talking about people out in the Boonies at the end of the line!

Bobs Comment about gold plated poles is a popular Sarcasm here due to the cost of power and Supply charges we get hit with. My last power Bill from week before last was $297. $94 of that was supply charges so pretty close to 1/3rd.  Granted my bill is below that which on the bill they say is typical useage for a 1 person household but still being charged so much just to have the power connected is a rort. I was at my last place 24Years and the only thing I ever saw them do to the power supply was  replace an ancient pole across the street that had deteriorated to the point it snapped  when a car hit it not too hard at all.  Other than that, all those poles and wires were never touched.

It's hard to swallow the power cos bleating about Maintaining a 'safe" ( their favorite drama adding word) and secure grid and the need to raise prices when it seems they are the only entity to post a record profit every single quarter.

Many people now are having problems with their solar cutting out or limiting output due to high line voltage. The Utilities blame " too much" solar feed in and their fantasy story  is akin to everyone goes to work on another planet therefore there is all this unused power coming from the solar that no one uses.  It's insulting to a persons intelligence but lucky for the grid operators, they know peoples intelligence overall is pretty low. If there is already too much solar power, why are they all in a race to build succedingly larger and larger solar farms?  they go on about all the domestic solar causing destabilization through frequency shift but happily ignore the fact every inverter here has very tight  frequency matching standards so that does not happen and are more likely en masse to pull it back into line rather pull it out. 

Their Rhetoric is about as truthful as the weather bureau is reliably but at least the weather mob is just incompetent rather than trying to screw people over for their own profits.

They do everything they can to get out of adjusting transformer taps which are still High at midnight when there isn't a whole load of sun anywhere in Oz funny enough and make excuses.  The fact that they can profit out of this through an amount of higher usage ( 5% is substantial when you are talking about grid customer numbers and they reduce revenue loss through reducing back feed they have to pay customers for is), irrelevant we are told.   ::)

Until maybe 12 Months ago when You mentioned it,  I had no idea our power system worked the way it did and TBH, when you first mentioned it I thought you must have made a Typo.  Running one side back to earth seems  crazy. I'll gaurantee here there is no way the operators would change the system unless they could do it for no more than $10. As I said, just getting a supply out of them that is within the guidelines is Difficult enough.

I am also reading that there are a lot of new places now being restricted to 42 amps in their supply allocation.  They have a table which attributes so much power per circuit which is a calculation nothing to do with actual ( or realistic) draw and certainly nothing to do with making any sense. Suffice to say,  Put in ducted air, Electric stove and a pool, and you are way over and they won't connect you till you eliminate something.  The allocation they make for a pool is something like 20A.  I have never known anyone with a pool to have a motor larger than 1.5 HP and that's not even 10 A let alone 20. By the same token, they allow 80 power points in a house and only allow 20 A for that. I realise you won't use every one at the same time but a couple of fan heaters or a welder and compressor and you are there. That's without all the small things like Tvs, computers and refrigeration that tend to all be connected at once and do add up.

For people that want more power, they are charging them ridiculous money. Of course a lot of these new suburbs don't have gas so you are committed to electricity for things like hot water and cooking which would take significant power out of the equation. Just to really screw you over, no, you can't eliminate the load in the calculation by using bottled gas, it has to be factored in whether it's used for these loads or not.  Having solar does not alter the calcs either unless you have some implausible size ( cost) battery.

What I do with my solar is not legit at all and the power co would shit a kidney if they found out and I could not care less. Their own corporate behavior and policy's are  predatory to say the least and their attitude towards their customers stinks from their distribution techniques on down.  I get satisfaction from screwing them over although it can't last forever. They have got it past the gubbermint that all meters NEED to be smart arse meters and there is a program to replace them despite the debacles in every other part of the country and the world where they have been used. BUT.... they are spending the money on this to save their customers Money which by extrapolation means less profits for them.  Yeah, that makes perfect sense and isn't a load of BS or anything!
 I am scared of the thought of when my grid battery  ends and the bills I'll face but i'm using this as a learning curve and getting my waterfowl in a linear alignment so when the time comes, it will just be one more step to go off grid and screw them over completely.

They are crying about that now too trying to argue that it's not fair for the people who remain on grid to pay a larger share for the gold plating required.
So nice of them to put their customers before their own corporate greed and profits.
Think I'll just go have another glass of the Power co KoolAide to toast them for that.

I'd like to toast them allright, with about 9KW of 350V DC straight from my main array!
Title: Re: Power outages
Post by: BruceM on November 29, 2018, 02:04:37 AM
The history of private power companies in the US is also a classic tale of graft and corruption at the expense of the public  They invented what we now call "cigarette science" in the 1970's when independent research showed that EMFs were a serious health stressor.  They spent a bundle on bribes and to "campaign funds" to get the system we have in the US, where they have a monopoly but are "regulated" mostly by regulators who they fund, now openly here in AZ.  The public has no clue as the extent of collusion and corruption.

I moved off grid because of their insane T-NC with MEN (multiply earthed neutral), which caused my MS and epilepsy to flair up badly seasonally with load increases on our rural single phase power.  I now say with the cheap PV prices that the time is ripe to tell them to STUFF IT.  There is no chance of them behaving in a responsible way.

Load shifting and super quiet (CS ring a bell) backup generator can save you a bundle in batteries.  The conventional houses and building codes were built with cheap power in mind, or just altogether ignoring operating power costs.  A hell of a lot more insulation and redesign to improve energy efficiency is in order for retrofits.  Propane is a good clean fuel as solar backup and I expect synthetic propane will come along in another decade or two.





Title: Re: Power outages
Post by: mikenash on November 29, 2018, 02:57:32 AM
Up at my "retirement property" (a shed in a paddock with no services lol - and that's assuming there will be "retirement")  I have one of the CS Listers sitting gathering dust & birdshit and a couple of 230V gen heads in the shed - a project for "when I have time".  Plus there's a couple of big, 24VDC Leece-Neville truck alternators waiting to do some work - when I have time . . .

When I finally move up there, I'll put in some PV and batteries as the Bay of Plenty is NZ's sunshine capital - maybe in four or five years?

Meantime there's nothing to gain by having good batteries turning to sulphated crap by sitting around doing nothing for months on end - so solar can wait.  So I have several of the much-maligned petrol "screamers"

Pride of the fleet is a 2.4kW Chinese copy of a Honda.  New, 7 years ago, it cost $400.  I couldn't tell you how many hours it has done - hundreds anyway.  It has had a new carb ($40 and possibly unnecessary) and a new AVR ($27).  Both easy-peasy fits.  It's really quiet.  When I'm up there I just plonk it out behind my old Camry wagon at the end of an extension flex.  It has often run for 12-15 hours at a time on a winter's day.  Being petrol it doesn't mind running no-load

I have a genuine Honda 2.2kW unit which cost three times as much and that's the one I lend to neighbours whenever there's a power cut as it has a very easy pull-start.  There are lots of power outages up there due to steep terrain, storms and trees near power lines.  Also it's the one which my lady friend uses if she's up there on her own as she can manage the pull-start easily and it always starts first or second yank.  Otherwise it just sits under the shed doing nothing

There's also a big, circa 7kW unit which runs the hot-water-in-a-hurry cylinder.  That's a 60-litre cylinder with a 3600W element that draws about 15A on a 20A Reyrolle plug and heats up from cold in about half an hour to 85 degrees.  I use that if the sun isn't shining for the solat hot water or if the stove-with-wetback isn't running

For some reason I also have a "spare"  It sort of followed me home one day - a 3kW Chinese Honda copy with an electric start - I haven't used it in a year.  it was the electric start that sold it, I guess

All of them are kept full of gas with about a 1/0th of 1% mix of fuel stabiliser.  They always seem to start up just fine

I keep a spare carb and a spare starter assembly and a spare AVR and a pair of (light and heavy) throttle springs up there "just in case" as well.  I have long since established that - despite different stickers on the Chinese tinware, and different designs to the Chinese plastic bits - mechanically they are identical

Despite the bad press they get from purists - I think they're great.  I have convenience, reliability, redundancy in depth . . . I guess the whole lot probably owe me something like $2200 spent over the last five years.  I may never have to spend another penny on them

There's a lot to be said for convenience when you turn up at midnight after a day's work and a six-hour drive

Just my $0.02 on the generator front
Title: Re: Power outages
Post by: ajaffa1 on November 29, 2018, 03:48:44 AM
Well guts, yesterdays power outage has convinced me that it really is time to complete my Lister CS/ ST5 project. Running the Lister ST2 and only pulling one third of it`s available output is not going to be doing it any good. It needs a long run under heavy load or the cylinders start to glaze. Running the CS, with the same load, would be somewhere between half and three quarter power. Much better.

Dropped the head and cylinder off at the local engineering shop this morning. In a very strange twist of fate the guy who will be doing the work is the same guy that recovered, what was left of my Ute,from a field two years ago after my accident. Wonder if I`ll get discount as a regular customer?

I`ve got a couple of those Chonda engines running water pumps, never had a problem with the engines only the carburetors. Replaced them with genuine Honda carbs and they run a dream, I think the difference is simply a quality control issue or possibly poor gaskets.

Couple of pics showing the ST unloaded and loaded.

Bob
Title: Re: Power outages
Post by: glort on November 29, 2018, 03:57:56 AM
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I now say with the cheap PV prices that the time is ripe to tell them to STUFF IT.


There is a lot of talk on the solar forums about batteries like power walls, LG's and other commercial produce grid connected money savers.
They DO NOT add up, no matter how complicated you want to make the maths to confuse the non electrically Minded.  The FACT is NONE of them hold enough power for that power to be of enough value to offset the costs of the units in their expected operating lives. And that is in best case, perfect return, impossible to achieve calculation.

I think about going off grid and think the reality is I don't make enough power all year to do that, winter being the problem.  Then I think a bit more and realise, I probably have less than 10% of the house roof covered in panels ATM. Another 20% faces the wrong direction and would only be of any use in summer when I won't need it anyway. That leaves a good 70% of very viable roof area still untouched.  Probably wouldn't bother with 10% of that being small areas shaped for appearance so i'm still left with a real good amount.  The entire east face and the majority of the west is clear. On the back west roof I have 9x6M entirely clear. On the same roof I then have another 9 x 3 above the other angled off set roof and above the row of existing panels.
That's 54 250W panels Plus another 9, potentially 15 If I max out the area with different orientations.  Call it 62 panels potential for sake of connection and ease of install.

That's another 15.5 Kw and I have another 5KW waiting to go up on the north roof now.  that's over 20 Kw in addition to the almost 20KW I am presently running. And I haven't touched the east roof yet.  That's another 9x5 or another 7Kw worth Min.
Yep, crunching the numbers, I think I'd be fine with off grid and the Lister/ Ruggerini/ merc engined generators would be lucky to get more than a monthly maintence run.  And that would be with the same all electric I run now. Add in a oil or wood heater for winter as in the works presently... No brainer.   It rained more than it has in the last 18 months here yesterday and my 5.5 west array still did 2.8 KW.  If I had 40KW of panels and did half rating on a crappy day,  it's still minimum half consumption on a cold day so still in good shape. When I didn't have to run the air or heating, I'd be OK.

The other thing I forget often is ALL my inverters are way over clocked and derated due to the limits of the wiring I am working with. My 5 KW inverter up the back has 9 kw of panels but unless I bleed off the power from the circuit say boiling water with an urn, it's lucky to make more than 3.5KW before the voltage rises too much and the thing trips out or I have to switch off one string.  The west array is 5.5 KW on a 3.6 Inverter and that does run pretty much flat out on a good day because it is connected through the water heater circuit so whenever the voltage climbs there indicating backfeed, the voltage relay kicks in turning on the water heater and giving it a load to work against. As the heater is 3.6KW, it's virtually neutralized leaving any gains for the other inverter on the same phase.

The 5KW ground array atm is on a 2KW inverter which obviously maxes out pretty often as well and there is another 1.5 Kw on the south shed roof. There is room to take that out to about 2.5 KW without much trouble if I wanted but that was really just a test setup that's worked way better than the solar folk lore would have anyone believe. That has a 4 Kw inverter but maxes out as well due to the fact that is a light circuit and struggles at much over 1KW going though it.  When I get all the proper wiring in place and set things up more efficiently, I expect I'll get way more power than I need in summer and come closer to winter needs before anything else is added in.

While this might all sound doubtfully expensive, I have under $2500 in this so far being everything I have bought has been 2nd hand. I visit a nearby solar installers Skip bin pretty frequently and the NEW switch gear and things I have pulled out of there they throw away for reasons that baffle me has been worth a bit and allowed me to replace what I was making do with with the right gear. I have it so better doing it right for nothing than having stuff sitting on the shelf gathering dust.  There is still a LOT of stuff on that shelf though!

Given out first bill would have been well over $1500 as is most peoples without solar round here, we are already so far in front with what I have spent on this and it's been a good distraction and profitable hobby as well. Sometimes I can't get my head around the simplest of straightforward problems and other days I can come up with clever workarounds off the top of my head which make this buggering around very rewarding.  I's still a bit heath Robinson but I have to admit, that's not just being slack.  Once I do it all right and permanent, there will be nothing else to and waste my time on. Not much fun in that.

If I went off grid I would probably go to a lead acid forklift pack of 30Kwh. I could go smaller but for the $2500 price I could get a refurbed one here for with 5 year gaurantee in stationary ( home) use as they are happy to sell them for, may as well go a bit bigger and lessen the strain.  I'm also looking into  refurb EV packs.  Very much smaller, lighter not that it makes much difference in this application and about the same price and capacity depending on what you exactly get.  Life of said pack I believe would be shorter.  I would think 10-15 years from the lead is feasible, maybe 8-10 out of the EV pack.
The EV pack with the right BMS should be maintenance free for the most part which is probably it's main real advantage over the Lead acid.
I have to research about that more though but they are certainly being used in the states and other parts of the world where they are a LOT more EV's and parts prices are much lower than here.

I figure maybe $2500 for inverters, chargers and ancillarys IF I buy right for the lead acid setup.
For the EV pack, I'm wondering about buying a wrecked Prius ( as I can buy from the trade/ wholesale Auctions) and breaking that up and using the components ( with a bigger battery pack) as the main part of a system. I'd get a small battery, the BMS and a very efficient generator.  Might be petrol but I could supplement that with Biogas and heat the gas plant with a co gen system. Feed the gas generator with household scraps, wear tie Dyed shirts, hand made sandals, already growing my own food..... Buy a guitar and learn to play Kum by ah and I'm a modern hippy!

Right now using the grid is the cheapest option for me. I can keep the bill to $300 or less pretty easy 3 quarters of the year and expect my winter quarter to be about the same next winter If I can offset the heating factor.  I plan to do this with using an oil burning heater and am also setting up an inverter to feed the 3rd leg of the AC which I can't backfeed due to the electronic meter.  This will be a relay that boots up a small inverter that will take the majority of the load off that leg when the AC is running during the day. Probably don't want to go below $200 a quarter or they will get too sus I think and suspect I'm stealing power somehow.

Given the all up guideline price of $1000 KWH all up here for the commercial batteries ( or much more) this would seem a cheap way out IF I have to go that way.  Also looking exactly what I might be able to get away with and turn to my advantage with a smart arse meter and getting paid ( as low as it is) for backfeeding.  I'm wondering about a small solar setup but with an over sized inverter and approval for a much higher feed in.  from there I'll just hook all my existing panels up to drive the bastard to its full capacity. If I have approval in teh first place saying I want to upgrade later, then I'm confident they won't be bothered asking anymore questions and I may be able to offset my consumption with the feedin tarrif as people with larger systems seem to be able to do.
Title: Re: Power outages
Post by: glort on November 29, 2018, 05:09:10 AM
Running the CS, with the same load, would be somewhere between half and three quarter power. Much better.

Wouldn't that be a luxury?
I have the little engine for the light loads, the big engine for the heavier loads and I'll sync both of them up for running everything at once!

Looks like a very professional and well laid out setup there Bob.... as we'd expect nothing less from you!

Quote
Dropped the head and cylinder off at the local engineering shop this morning. In a very strange twist of fate the guy who will be doing the work is the same guy that recovered, what was left of my Ute,from a field two years ago after my accident. Wonder if I`ll get discount as a regular customer?


The engineering shop has the local towing contract??  That's diversifying!

Quote
I`ve got a couple of those Chonda engines running water pumps, never had a problem with the engines only the carburetors. Replaced them with genuine Honda carbs and they run a dream, I think the difference is simply a quality control issue or possibly poor gaskets.

I think between my father and I we have about 20 of the china engines now, also never had a problem in the 7 years since we started buying them. Dad was a Honda only man and dead against Cheap Chinese Junk.  His position now is he wouldn't pay the price for a Honda now when the Chinese ones work so well and you can buy about four of them for the price of one Honda. As he also says, at his age, getting 20 years out of something is no longer a priority.

Ironically, Different to your experience, I bought him a Chinese Coil and a carb  for his old Honda water pumps. Been working fine.  Again a coil for the Honda from memory was about $120. The Chinese knockoff, $17 delivered.  Carb was a similar disproportion. Both pumps have been getting a work out of late and he was telling me earlier in the week they haven't missed a beat.

I have had a fair bit of trouble with all my 2 stroke Chinese engines of late but traced it all down to crappy fuel line that breaks or gets holes even though it's only 12 months old and I DON"T use that crap E10 fuel.  Been replacing the line which can be a tedious and fiddly task on some things but having done that, all equipment has returned to it's previous reliability and easy starting. Still have to do the chainsaw which looks like it' going to be a monumental pain in the arse but the blower, hedge trimmer, brush cutter and pole saw have all been cured. Thought I must have put crap fuel in them at first but figured if one ran OK, they all should.  Full tanks one day and empty the next without using them was the giveaway along with the stain on the shed floor.

 Guess you have to expect some shortcuts but if this is the worst that happens, I bear in mind the huge savings and wear it happily.
Title: Re: Power outages
Post by: mikenash on November 29, 2018, 05:48:29 AM


I`ve got a couple of those Chonda engines running water pumps, never had a problem with the engines only the carburetors. Replaced them with genuine Honda carbs and they run a dream, I think the difference is simply a quality control issue or possibly poor gaskets.

Couple of pics showing the ST unloaded and loaded.

Bob
[/quote]

By chance I live & work near an importer of these generators - they do anything that is portable-ish & has a Chinese Honda-clone engine - generators, pumps, log-splitters, concrete-cutters . . . and I have found them to be honest and capable. 

They maintain their particular motor supplier also makes Hondas - as evidence they showed me a bunch of spare parts in Honda-logo boxes with the Honda stuff scribbled over with black felt pen . . .

As you say, Bob, QC is key, and I have never had an issue with any of these guys' gear.  Fingers crossed
Title: Re: Power outages
Post by: ajaffa1 on November 29, 2018, 06:53:49 AM
Hey Glort, strangely enough the local machine shop also repairs/services motor vehicles. They have the NRMA franchise to tow/recover damaged vehicles. Very lucrative business considering how many hoons and f*ckwits there are on the roads these days.

I have also had big problems with fuel lines going hard and brittle. Not sure if the problem is with the fuel or cheaply imported fuel lines. I only ever run E10 in one lawn mower that is reasonably new and specifies it as the fuel of choice. It does not appear to be any more or less reliable than any of my other equipment. E10 is probably OK provided you don`t let it stand too long, once it has absorbed a whole lot of moisture out of the atmosphere it will cause corrosion to any metal parts it comes in contact with. The lawn mower in question has a plastic fuel tank, plastic and nylon carburetor and polyethylene fuel lines, nothing to corrode.

I have four chainsaws of various sizes and makes. One of them I made the mistake of putting E10 in. It ran perfectly well until I wanted to refill it and couldn`t get the fuel filler cap off. Apparently this is a common problem with these saws, the ethanol in the fuel causes the plastic cap to swell! Once I did get the cap off with a wrench I left it open overnight, the ethanol evaporated and the cap fits perfectly. If you are looking for  chainsaw parts for Husqvarna or Stihl check out a company called Farmertec in Singapore, the prices are about a quarter of what you will pay here.

Hi Mike, pretty sure you are right about Honda having stuff made in China. Nothing wrong with that, the Chinese are perfectly capable of making very good quality machinery. The mistake people make is in trying to drive the price of components down too low, at which point the manufacturer will have to start cutting corners and reducing quality.

One trick I always use on Chonda engines is to run them for a few hours and then re-torque all the bolts including the cylinder head. I haven`t had to replace a head gasket since I started doing this. One of my Chinese Davey pumps leaked from day one, striped it and found that some idiot had put the ceramic seals in back to front, it`s run like a champion ever since.

I have another one which I need to connect up to the dam, This one will be used to irrigate fruit trees and will have a diverter valve to pump water up to a sprinkler system on the roof, in the event of another bush fire. Not sure I`m up to digging trenches at the moment so it will have to wait.

Amazing how many of these motors, pumps, chainsaws and generators get thrown out by incompetent home owners every time there is a council cleanup. I guess if it doesn`t start first go they just chuck it out and buy a new one. Great for the Chinese economy and very bad for ours, can`t be doing much for the environment either.

Bob

Bob
Title: Re: Power outages
Post by: mikenash on November 29, 2018, 07:36:47 AM
Interesting comment about re-torquing things.  I haven't made that observation

We have the Chinese motors in pumps & small gensets at work which we use pretty hard - issues are commonly limited to the odd AVR, replacement starter assemblies cos it's easier than pull-cords, and an annual oil-change

You're on the $$ re quality control and price point.  After all, the Chinese make cars & high-speed rail and aircraft carriers etc.  It's our own fault if we demand cheap and then get cheap

The downside is that our demand for cheap has driven suppliers of well-made, last-a-lifetime stuff into extinction.  Look at the way an old 20-series John Deere or an old Ford 5000 is still running after 40 years as long as it's had a bit of maintenance.  Or a proper Husqvarna or Jonsereds saw.  Or a CS for that matter  :)
Title: Re: Power outages
Post by: ajaffa1 on November 29, 2018, 07:53:22 AM
Hi Mike, another downside of our wasteful, cheap mentality is that most young families stick the cost of this awful crap on a credit card. The tool/machine is scrap before they have even finished paying it off. Their total lack of any practical knowledge of machinery just exacerbates the problem.

Bob
Title: Re: Power outages
Post by: glort on November 29, 2018, 08:27:07 AM

I got to admit, I have picked up some good equipment over the years from the side of the road cleanups and more recently stuff being sold Cheap on gumtree and the like.  It really only takes a Gummed up carb or a whisker across a plug and people throw perfectly good stuff out.
Seems every new generation of gets built cheaper and weaker and less up to the job.

I was looking at an edger last night for the paths and garden beds. Found an older Kawasaki going cheap supposedly with spark problems.
Mrs came in and saw it and asked if the engine was any good. I said I couldn't care less. She said what if you can't get it going? I laughed and said 1, that's unlikley and 2, I have a spare petrol and a Diesel up there that will fit I can just put on. the rest of the thing is built like a tank, the price is right, so what.

I reminded her my plough wasn't working either when I got that but it cost me $50, I spent another $50 on a motor and 420 on a pulley and the thing is a ripper as I had showed her on the weekend working on some garden beds she wanted to re do.

Better go check Dumbtree if the seller has got back to me about that one .
Title: Re: Power outages
Post by: Johndoh on November 29, 2018, 08:37:42 AM
I like reading the posts about generators always good to learn something. I am warming to Chinese machines a little but God there's still some crap around.

https://www.gumtree.com/p/generators/brand-new-silent-6.5kw-mill-german-generator/1322198385

These seem particularly cheap and nasty they are on all the local selling websites usually being sold by guys with thick Irish accents and driving white vans. I was reading somewhere recently that the windings in these generators are aluminium which I doubt is a good thing.
Title: Re: Power outages
Post by: ajaffa1 on November 29, 2018, 11:58:56 AM
Hey Johndoh, when I lived in the UK there were no end of Irish travelers trying to sell stuff to the workers on my building sites. It all looked good but was made from mild steel rather than high carbon steel. Had to ban these guys from site and make it by appointment only with reputable dealers.

Aluminium is a better conductor than copper but melts at 660 degrees Celsius, Copper melts at around 1085 Celsius, I`m sure you can work out the difference for yourself.

Bob
Title: Re: Power outages
Post by: glort on November 29, 2018, 01:12:39 PM

I think that's bit of a moot point Bob.

The insulation varnish on whatever windings will be well and truly Kaput at 300o no matter what the windings are made of! There are a lot of advantages of copper over ally, price is about the only drawback but given the same units in each, I doubt the difference would be that much.

Maybe biggest problem with ally windings is if they cheap out on the coils, they probably make everything else as cheap and dodgy as they can as well.
Title: Re: Power outages
Post by: Johndoh on November 29, 2018, 02:40:05 PM

I think that's bit of a moot point Bob.

The insulation varnish on whatever windings will be well and truly Kaput at 300o no matter what the windings are made of! There are a lot of advantages of copper over ally, price is about the only drawback but given the same units in each, I doubt the difference would be that much.

Maybe biggest problem with ally windings is if they cheap out on the coils, they probably make everything else as cheap and dodgy as they can as well.

In Ireland we refer to travellers as them fcukers!
Title: Re: Power outages
Post by: BruceM on November 29, 2018, 04:24:40 PM
"Aluminium is a better conductor than copper but melts at 660 degrees Celsius, Copper melts at around 1085 Celsius, I`m sure you can work out the difference for yourself."

Copper is the better electrical conductor by far. (Also better for heat conduction.)
https://www.engineeringtoolbox.com/copper-aluminum-conductor-resistance-d_1877.html

The problem with aluminum wire is usually the larger size to carry the same current, and the problem of dissimilar metals and corrosion at connections. My neighbor's ST-3 with aluminum windings on the rotor failed- with an open winding on one rotor coil.  The failure was NOT at the terminals, but somewhere in the middle of the winding.  So I would conclude that it was a flaw in metalurgy. I've never seen that happen in copper but don't know enough about aluminum wire failures to be certain.
Title: Re: Power outages
Post by: mikenash on November 29, 2018, 06:17:17 PM
FWIW the generator guys that we deal with say they have never seen an actual alternator failure on the China gensets and were quite dismissive of the idea - "you never get an alternator failure - things like AVRs, yes, but never the windings"  Probably not a lot of load on a 2-10kVA unit actual copper windings?
Title: Re: Power outages
Post by: glort on November 29, 2018, 09:11:53 PM

Being that I regularly wake from Nightmares and can't go back to sleep, I was just reading the Australian Electricity Market Operators  AEMO summer prediction for power.

In summary, due largely to the closure of Coal fired power stations over the last couple of years amid all the green environmental Hoopla, they are predicting wide spread Load shedding ( Blackouts)  Over Victoria and SA especially with a very high risk to NSW.
The report contains more waffle than one of my tirades and certainly a lot less fact.  There are endless phrases like " AEMO will be working with operators to ensure the best possible supply reliability" But give little to no specification of what that actually entails.

The boogieman is well and truly leveled at weather and the increased demand on the grid from air conditioning.

There are a few points that stand out to me.

The much heralded Big Blattery is of limited usefulness.  Once it is called on for its power, It is out of action for 24 Hours. Much different to the impression I had that the thing could charge up again almost immediately power was available from the solar farm it is attached to. Apparently this recovery time has been kept pretty secret outside the industry.

The next Biggest Contingency and threat to supply apart from the weather is, the weather.
With all the reliance on Renewables, there is clearly a fear factor in a lack of wind and cloudy conditions over solar farms which are outside the city's while the citys receive high temp weather events. Wind certainly seems to be the most unreliable supply and poses the biggest threat to their balancing act calculations.  Clearly without it, blackouts WILL happen.

Private solar PV input is largely saving their arses as much as the power co's are trying to limit it atm.
They not that while overall power consumption is increasing, demand on the grid is stable as it is being offset by the PV input.  It also notes the risks of localised load shedding in the city centered is greatest because of concentrated demand and low localized PV input ratio.

There is a lot of talk ( complaint) by power cos about excess midday power from private PV generation.  The market operator's own figures show this time as having 90% the demand of peak useage. In other words, the excess power at midday is no where near as much as they make out at all.
This confirms what I said earlier this week in a discussion about this that people just don't leave home of a morning and go to work on another planet.
If they are not using power at home, they go to work and boot up computers, machinery, turn on lighting, AC and use power at work.
The power private PV systems backfeed to the grid is not an excess with no use as constantly made out, it's simply used in places other than homes.
Didn't need to be Sherlock to work that out.

Another "Inference" if not outright statement I got from elsewhere on the site indicated that the majority of private PV power is consumed within 2km or less of where it is generated, even in area with the highest rate of PV installations.  Something else I have maintained. In most areas I can think of, there are shops, businesses, factories, hospitals and other huge power users within a short distance of housing  concentrations. I can only Imagine the amount of power one shopping centre sucks down and it's not hard to imagine that being all the PV generated within a 2KM radius. that won't be the only large power draw within that radius so I'm sure the circles on a map  overlap extensively. "

The highest probability of Blackouts will occur about 8PM. This is when demand is still high thanks to summer days being longer and hotter and daylight saving time in conjunction when the PV input from solar farms and private generation disappears. People come home to Houses that have heat soaked all day long, the ambient temps haven't fallen much as the sun has only just gone down and they want to cool the place off so fire up the AC.
 This time frame leaves the greatest potential power shortfall as even though some areas will still have light, there is only so much power that can be transferred and the distances for the areas that have solar are too great to send much to the areas that are now dark.
 Again, if that wind isn't blowing down south, it's going to be candle time for them.


It is pretty clear that the reliance on fossil fueled power is really the hinge pin of the whole system.  They are trying to reserve a LOT of Renewables but clearly are nervous about their reliability and their ability to be available when needed.  Coal and gas stations however are clearly what is going to be keeping the lights on in anything but a perfect weather outcome.


Having your own generator(s) Bob will be far from being pedantic or over cautious. It may be the smartest thing you could do in fact. You seem to be in about the best location, far away from the Mexicans where the greatest risk to supply is but there is also the risk of a cascading effect.

Reading this I'm seriously considering getting a couple of decent sized used batteries and setting up my system I had before with the panels and inverter.
Might also re motivate me to set up that 10Kw genny I was trying to do before. May well come in very handy.

Title: Re: Power outages
Post by: BruceM on November 29, 2018, 09:39:45 PM
You'll see a lot of PCM or ice freezing A/C assist cool storage systems in the near future.  The power co.s will push peak power rates so high you'll do anything to avoid them.  It's going to get ugly, and the Power Co.s will do anything they can to keep the status quo.

For off grid, freezing/PCM  to store cool is clearly the way to go.

Sydney's climate is pretty mild.
https://weatherspark.com/y/144544/Average-Weather-in-Sydney-Australia-Year-Round

If this is correct, a super insulated home would likely need very little cooling if any.  Little enough that cooling the water for the in-floor pex could do it, as I plan to do and which is very well proven. The cooling could be during the sunny (PV) day. 

In the past, mild climate homes get little or no insulation, and owners just throw energy at the problem.  Those days will be coming to a close in the next 30 years. 




Title: Re: Power outages
Post by: ajaffa1 on November 29, 2018, 10:26:22 PM
So the Australian power grid won`t be able to meet demand if it gets hot in the summer. When was the last time we had a cold summer? The energy companies need to wake up to reality and make the much needed investment in new generating capacity. Something they are not going to do until the politicos stop fighting among themselves and introduce a long term energy plan.

The idea that we should all switch from internal combustion engines to electric vehicles is plainly nonsense. I`m sure there must be scientists and engineers that know this, so why are we all being lied to?

Definitely need to get a wriggle on with my CS project. One of the questions I have is about my grid tied inverter. When there is a power outage there is no 50 Hz signal to drive it so it produces nothing, would the output from a generator be stable enough to provide that 50 Hz? My second worry is that the output from said inverter would then reduce the demand on the generator, would the governor react quickly enough to prevent over voltage or would I end up cycling the two against each other and blow something up?

Perhaps I should be looking at a second stand alone inverter and array with generator backup. If I did that the grid tied system could export it`s entire production and the electric company would end up having to pay me money!  :laugh:

Bob
Title: Re: Power outages
Post by: BruceM on November 29, 2018, 10:38:01 PM
As you suspected, Bob, you will need a stand alone inverter.  The grid tie inverter won't do the job. There are some new models that do support a backup power mode when the grid is down.
If you hook it to a generator, the poor bugger will try to pump power back onto the generator, which will then overvoltage and turn off the inverter almost immediately. 

All inverters should have at least a dual stage common mode choke filter on inputs and outputs.  Dirt cheap health insurance.
Title: Re: Power outages
Post by: ajaffa1 on November 29, 2018, 10:52:14 PM
Thanks Bruce, thought that would be the case, I`ll start looking for a decent second hand stand alone inverter. Wonder if I should get more panels or put a diverter switch on the panels I have?

Bob
Title: Re: Power outages
Post by: glort on November 29, 2018, 11:37:24 PM
Sydney's climate is pretty mild.
https://weatherspark.com/y/144544/Average-Weather-in-Sydney-Australia-Year-Round


I don't know where they got those numbers but I suspect it was a spot very close to the beach where teh temps are always a LOT cooler.
I'm on the western outskirts where you start to see cow paddocks which are fast being bought up for houseing estates where they shove as many people into the tighest area they possibly can to ensure all sorts of social problems of the future.
It's about 50KM as the crow flies from the CBD and the coast.

Here it's common to have days in a row over 40oC or your 100 antiquated measures that even the people that invented it have abandoned :0)
On average it's 15oC hotter and Cooler than in the city and suburbs.  In the last 12 months we have had  47oC days and a -5's as well.
I'd say it's anything but mild.
Back closer to the thermal limiting heat bank of the ocean, much less variation but I find that chart pretty " massaged" for Tourist comparability.

What is PCM freezing?  Storing cold for later use?
Must remember to quizz my fridgy mate on the practicalities of putting a much oversize Compressor unit in a chest freezer.
Title: Re: Power outages
Post by: BruceM on November 30, 2018, 01:32:45 AM
Yes, PCM is phase change material.  For a cooling system just water freezing at 0C is OK, but for colder temperatures, other materials can be used or a bit of antifreeze added.

Your bigger temperature swings don't change the situation regarding super-insulation.  The peaks don't really matter; I have temps over 100F regularly in June, but the house stays around 68-71F.  Cool night time air, with open windows is all I need to drop it back down to 68 overnight. I occasionally get tricked by late clouds and a warm night, but not often.

As long as the total demand for cooling isn't too high, and the humidity isn't high, the in floor pex for heating can be used for cooling, with water temperatures around 55-60F.  If the water is too cold, or house is too humid, you get condensation on the tile floor.  A higher volume pump would help avoid cold spots.
Title: Re: Power outages
Post by: BruceM on November 30, 2018, 01:38:42 AM
Bob, I can't remember the big picture of your homestead power. One of the dual use inverters might be good for you, with a modest battery bank which could be augmented with Lister power.
Title: Re: Power outages
Post by: glort on November 30, 2018, 03:56:49 AM
Thanks Bruce, thought that would be the case, I`ll start looking for a decent second hand stand alone inverter. Wonder if I should get more panels or put a diverter switch on the panels I have?

Bob

Few insights to that Bob....
Firstly, You will need batteries of some form. I'm not aware of any inverter you can feed Direct from Panels without batteries.... apart from maybe one built by some Electronics Geniuses on another DIY forum I look at.  A narrow operating window with very precise setup of dedicated panels for the job.

The best/ most economical way to go is exactly like I did in my Vid.  Panels/ charger/ batteries/ inverter/ load.
You would not be able to just switch from your grid tie panels. They will be wired in series to give somewhere around 300V on average. The input to an inverter will need to be 60V at max, more likley, 24. 

The way I did my setup was to put a stack of panels in parallel. Being house panels they were 30+ V which suited a 24V setup.  With a big enough controller, the batteries can be quite small as mine were, a couple of large automotive batteries.  If you have enough panels and a big enough charger, the panels pretty much supply the power direct and the battery  is not discharged, its more of a ballast to take up any small variations.
I could boil an urn for instance and the batteries were not touched because the chargers supplied all the power to the batteries as soon as there was any voltage drop. The battery was back to float within a minute because it had never been actually discharged.

At night you could supply the chargers with power from an engine and a truck alternator and run the same battery inverter setup. Only the input source would be different.  Everyone will say you can't use car batteries or they will die quick but that is not all together true. they will die quick if you discharge them  below about 70% capacity frequently but if you are only every taking maybe 5% off them because they are attached to a charger that is supplying sufficient current all the time, they there is no reason they shouldn't last longer than in a car and many reasons why they should. Spend some more on marine Deep Cycle batteries and you should get up to 5 years or more.

 The other way is to get a battery compatible Inverter. These will charge batteries with excess power normally exported to the grid first then if there is a power failure  ( or you turn off the mains) they revert to batteries. They are smart inverters so you could probably program them to discharge the batteries at night then go to mains if needed.

These inverters start at $1500 and I think average about $2K. As far as battery compatibility, I'm not sure. I have a feeling you would have to hook them up to something packaged from the manufacturers. I have been looking at and argu..... discussing batteries on another site and at the present time they are a VERY long way from being economically Viable.

If this was more occasional use then no question the car battery setup would be cheapest hands down. If you use the batterys as ballast rather than reserve of any kind, no problems. You would have to feed them from solar or a generator.  24V is the most easy setup.
You could use a truck alternator for the generator or a couple of 12V units with modifications and external control.  Not sure but on some it may be possible to buy a replacement regulator/ brush module to go from 12 to 24.  If you wanted a couple of 80A Mitsubishi internal fan types to play with. Let me know and I can send them up. I have not worked them out for this myself as yet but I'm sure it would be very simple for a man of your electrical engineering knowledge.

I have been looking at panels again this week for someone. Some good deals going on used stuff atm. Obviously isn't selling very much.
I spose you could wire an array up to be all single or parallel but what a Job that would be.  Better keep them dedicated I reckon.  Only other alternative I can think of to utilise them both ways is a Powerjack inverter.  these can run off 12 or 24V and plug into an electrical socket in your home and backfeed that way.  You have to be grid connected but they would allow you to utilise your Low voltage array when the power was on and get credit for that extra power.

https://www.ebay.com.au/itm/1000W-MPPT-Solar-Grid-Tie-Inverter-DC20V-45V-to-AC230V-Pure-Sine-Wave-Inverters/371965544731?epid=1249345992&hash=item569adfc91b:g:pYQAAOSw-JJaXFvB:rk:6:pf:0

https://www.ebay.com.au/itm/MSE-3000w-24v-off-grid-solar-power-inverter-charger-MPPT-solar-charger-40A/142959270937?hash=item2149095c19:g:pYoAAOSwJqNbC4OO:rk:5:pf:0 (https://www.ebay.com.au/itm/MSE-3000w-24v-off-grid-solar-power-inverter-charger-MPPT-solar-charger-40A/142959270937?hash=item2149095c19:g:pYoAAOSwJqNbC4OO:rk:5:pf:0)
Title: Re: Power outages
Post by: BruceM on November 30, 2018, 05:11:32 AM
Good advice Glort.  Auto batteries do very well for the "ballast" since they are designed for (and good for) very high discharge rates, and high charge rates too.



Title: Re: Power outages
Post by: EdDee on November 30, 2018, 10:46:26 AM
Hey Guys...

Take a look here: http://www.digipoint.co.za:85 (http://www.digipoint.co.za:85) This is basically a battery ballasted system I have running - 48V DC buss on 4Kw of panels, offline inverter/charger... If power goes down at night, the inverter acts as a UPS until the emergency screamer auto-starts, when everyone has woken up from the noise, I start old thumper, then the emergency unit shuts down automatically.... To keep everyone in the neighborhood on their toes, I turn on a bloody great loud siren on the raw mains circuit, this lets us know "subtly" when the grid is back up and running....

Cheers
Ed
Title: Re: Power outages
Post by: ajaffa1 on November 30, 2018, 11:42:31 AM
Thanks guys for that enormous amount of information. I`m off to Sydney for more medical assessments in the morning so I probably won`t be posting until Wednesday/Thursday.

It is difficult to express the horror that I feel about this trip, I don`t want to go but it has been forced on me by the insurance companies and lawyers. I have PTSD and am terrified in motor vehicles, I have no idea how I will cope in an airplane. Guess we will find out tomorrow, if you see some nutcase going postal worker at Grafton or Sydney airport it is probably me. Unofficially my councilor has recommended I dose my self with Valium about an hour before the flight, I`m not entirely sure flying wasted is the best solution but it may be the only option.

How I am expected to cope with Sydney traffic is a total mystery to me, I can`t cope with the traffic in Grafton! Very much hoping this ridiculous exercise isn`t going to induce another heart attack but I can`t help thinking that is all part of the insurance companies plan. Dead men don`t get compensation so lets give this old c*nt the run about and see if we can kill him.

What I find really offensive about this entire exercise is that non of these doctors I am seeing are allowed to make a diagnosis or recommend a treatment/therapy regime that might help me. These guys work for the insurance industry so when I arrive I will have to sign a waver allowing them to share my information with others.They will then determine if I am fit for work or compensation regardless of the wishes and diagnosis of the doctors who are actually treating me. What a crock of shit! Depending on how it goes, I may have to hunt some of these f*ckers down and explain to them the error of their ways. Don`t have a gun licence anymore because I am on anti depressants but I still know where the guns are kept.  :laugh:

While I am away, I would like to know how to rectify 240 volt AC at 15 Amps to smooth filtered DC at around 380 Volts at similar current. I`m hoping this should keep you guys busy and out of trouble till I get back.

Bob
Title: Re: Power outages
Post by: glort on November 30, 2018, 01:05:24 PM

Hi Bob,

If you would like to catch up while you are here or need any help getting around, let me know.
I'll message you my details in case you have lost them.
Title: Re: Power outages
Post by: BruceM on November 30, 2018, 04:16:03 PM
To take 240VAC to 380VDC with moderate ripple, and intended for a generator requires a large step up transfomer to 385VAC (or a few volts more than your desired DC output), then a well heatsinked bridge rectifier, a large choke of at least 5 millihenries, and at least 10000 uF of HV capacitor.  For less ripple, add a second choke and capacitor.  The chokes and capacitors are going to be large and spendy.  This is how I do it as I loathe switching supplies and their unintentional emissions.  I used this method for my 12 amp 230V AC to 146v DC battery bank charger. It used a surplus 230V to 115v step down transformer plus a motorized variac in series to adjust the charge current.  It's been retired after about 10 years of reliable service since my PV has been increased from 875 to 2375 watts; even on cloudy days I now have plenty of power.

A power factor corrected switching AC to DC supply is the typical modern solution and might save some size and expense...but only if you can find one for a good price. 

A two stage common mode choke filter could be used to knock down the conducted HI frequency emissions to the inverter I'm assuming you're supplying.  The inverter may otherwise have  troubles.

Sorry for your torture at the hands of insurance co. whores. I went though that about 30 years ago, to a very bad result for my health.

Sorry for the PTSD, that's a tough one.  CBD oil alone or pot with 1:1 CBD to THC works for some, according to the AZ veterans support group.  They had quite a fight to get pot approved for PTSD in our state.  I use it periodically for head and muscle pain and for control of complex partial seizures.  Compared to all the 2 dozen anticonvulsants I've tried (on some for 15 years, causing depression and liver, gallbladder, and kidney problems), it's pretty damned amazing.  A good side effect is my depression is improved the next morning from a night time dose which helps me sleep on a rough night. Very small doses below getting "high" work best for me. Too much THC just causes pain and paranoia for me, though I know for some it's very helpful for depression.
My quality of life has improved greatly because of it. 

Title: Re: Power outages
Post by: mikenash on November 30, 2018, 05:06:36 PM
Good luck Bob

FWIW my lady friend - she who can only start the easi-start Honda genset - has suffered a life of PTSD as a legacy of ugly childhood abuse stuff and physical damage associated with that

Years before we met, ACC doctors & conventional medicine had left her wheelchair-bound, very unwell, very overweight, and unable to cope with normal social interactions and many physical situations such as your traffic/confinement stuff.  Drugs like Prednisone were slowly killing her

A few years ago she began to research her conditions and situation and to take charge of her own medical processes (after a long struggle to find both a doctor and a pharmacist who "got it")

These days she is fit and active, takes no meds apart from an evening dose of an antagonist, lives independently and enjoys her grandchildren

She is a very smart woman who used the power of her intelligence and the information available in books and the internet, plus her bloody-minded determination, to take back control from ACC (read insurance) doctors and regain her life

It's worth commenting that she did that un-supported, largely, with no $$ at all - just living on something like a sickness benefit from ACC, and in very poor circumstances. Mostly just "determination in action"

I guess I'm saying that "if she can then you can".  Good luck
Title: Re: Power outages
Post by: mike90045 on November 30, 2018, 07:38:26 PM
I'd make a screened room, and put Switching Power supplies in it, clean the DC power up as it comes out of the shield room.   Much smaller inductors and caps with high freq switchers (and better power factor) and parts will be avaib in 5 years if it needs rework.    Big 400V computer filter caps are really expensive.

Title: Re: Power outages
Post by: BruceM on November 30, 2018, 10:16:00 PM
The high voltage caps for a simple linear supply are spendy.  The PF for a linear supply with a choke over critical value is nearly perfect.  Switcher's are hardly the robust and long lived solution. Good luck finding an affordable switching supply with good PF, the desired DC voltage, at 15 amps. 

If you are running a generator for the 230VAC source, changing to a 3 phase head and modifying or adjusting an AVR to generate the desired 380VDC or whatever is desired directly might be a nice solution.  Depending on the inverter, just 3 phase rectification alone (no choke or caps) might be all you need.

Title: Re: Power outages
Post by: glort on December 01, 2018, 12:45:21 AM

Hope Bobs Flight was OK.
According to the arrivals info,  he should have touched down about an hour ago. 10 Min early which will be a relief to him.  I was out the back yard and saw his plane go over. I waved, hope he waved back and wasn't too terrified.  That flight radar app tells me what plane is going over and I am under the regional flightpath so can spot them all dropping out from 11,000 Ft to about 8000 as they are in viewing distance right over head.  can always hear them but never enough to be annoying.  The idiot with the Pitts Special that flies out of the local airport about 3 KM away is far more annoying.  Pitches the prop up on the thing to make it scream and then comes in hot on approach and makes the engine backfire and crackle like no tomorrow.  He can fly the thing quietly and does when it suits but most times just makes a pain of himself. Going to start complaining if he does not pull his pitch in.  They are VERY wary of noise complaints here and with where that airport is with so many residential areas surrounding it. 

By now Bob will be out the airport and right in the thick of the Sydney shit Traffic.  Few places where it's worse than round the airport and on a Sat morning.
If he's staying in the city, he's not going to know what hit him.  They are digging up the CBD atm putting in a light rail, a brilliant idea to really Fk up an already bad but workable traffic situation. Just getting from one end to the other is an abomination.

I feel for you mate. Had you let me know you were coming, I'd have come got you and taken you wherever you needed to go. Home turf for me after all.
I know what you must be going though. I was sick to the stomach for a fortnight before going to NZ. Not scared of flights, just hate the ridiculous tiny space they squeeze you into which I don't fit. Was pissed at the people hiring me as well because Part of my going was conditional on extra legroom seats which they didn't book me and was all gone time I realised.
The whole thing, getting to the airport and fear of missing the plane, getting mucked around in customer, frigging round with idiots at hire car cos all had my anxiety levels off the scale so I know the fear and for me, the guilt of being scared of nothing and something I would have laughed at a few years ago.

Try not to worry about the traffic. It's moving too slow to hurt you which is one upshot. My dad freaks out about the traffic as well so I understand that and why you would be wary of it.  I know I go up the coast and round your parts visiting family and the time I get back here, I'm thinking why the hell is everyone driving like maniacs and the world has gone into fast forward?

Hopefully we can catchup while you are here.
Just waiting on a guy to deliver an excavator now so I can do some more gardening.  There are some powerful Big weeds up to 30Ft high I need to get rid of as well as cut a retaining wall and strip some garden beds.
Should be a long, hot, hard weekend carrying on into Monday.
Title: Re: Power outages
Post by: ajaffa1 on December 05, 2018, 11:18:34 AM
Hi Guys, got back today, flights all OK. I had no idea my flight was being stalked by Glort but I wouldn`t expect anything less.  :laugh:

The trip was a total waste of time and the governments money because when I got to see the specialist doctors their information was months out of date. So I have been sent home awaiting another summons to attend the government doctors, once the doctors,lawyers and insurance companies have got their acts together.

I haven`t had time to catch up on all the posts I missed while I was away, I`ll try to catch up in the morning.

Bob
Title: Re: Power outages
Post by: glort on December 05, 2018, 12:21:14 PM

Geez, and you didn't even tell me you were coming!   :embarassed: Kept an eye on my emails and phone but all for nothing! That's OK, I can take a hint!

How did you go mate with the flight and the traffic?  Where about did  you stay?
Why am I not surprised it was a bust? Do these things ever go to plan especially when anything governmental is concerned?  Would be cheaper to pay you out and be done with it than sped a fortune trying to get out of it and then having to cough up anyway. 

Why the hell couldn't they just send you to Brisbane anyway?
Title: Re: Power outages
Post by: ajaffa1 on December 06, 2018, 08:52:11 AM
Hey buddy, this wasn`t a social trip. I would have liked to catch up with you but reason prevailed. I stayed with my Brother in Law who lives in the Eastern suburbs. He very kindly drove me to all the appointments and to and from the airport.

I also got to go and see my Father in Law, he has dementia and is in an aged care facility. I haven`t been able to visit him for over two years. He was a wonderful man before this terrible disease took him from us. Incredibly he remembered me and knew my name, we took him to the beach and fed him ice cream, he smiled and laughed. I guess that`s one thing ticked off my bucket list, hearing my Wife`s Father laugh again.

I`ve still got to pen a stinking email to my lawyers asking why I had to go to Sydney for assessment when my medical issues are still ongoing and undiagnosed/untreated.

Bob