finyuk2005
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thats pretty impressive!
- Thread starter sardine
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indy4x
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Was it an invertor type welder?
I have the same generator, it's a few years old now, doesn't get a huge amount of use but it is useful
I did use it in work one evening to power a comms room with a few cabinets. Was concerned about the quality of the power coming out of the genny so we fed 3 separate UPSs 1st and then the IT kit from the UPSs. Thinking was, if the generator output was dirty the UPS would clean it up
It all worked, was pretty close to the limits of the generator. The UPSs weren't happy, lots of warnings about the quality of the feed from the generator but they kept going
I've been reluctant to plug my RTec welder into it in case it goes pop
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sardine
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No idea how the 10 hp Yanmar L100 powers a 180 amp welder generator but only 6 kva on a 240 v generator which doesn't power my inverter stick welder very well at all, 50 amps bogs it down on mine ( and that has very high compression its not worn out )
finyuk2005
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maybe a different AVR set up, i know that warrior welders generator i have claims to have a "modified AVR (Automatic Voltage Regulator) that reacts to an inductive load, delivering a non-fluctuating current; ideal for running a Warrior single-phase machine, particularly the Warrior 250 Single-Phase MIG Welder."
compared to a more basic capacitor based voltage regulator that some of those brushless alternators have maybe that makes all the difference,
I have found that it will run my mig at 200+ amps without breaking a sweat, but stick welding at 115amps does make it sound more like its working! not sure why?
addjunkie
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51 or 64kwh….according to mr google.Just as a matter of interest, what is the capacity of the battery?
Pigeon_Droppings2
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I'll let you know when the cable arrives and I've tried it. I think second hand mg4s are so cheap it might be viable to just use one as overnight storage.
Charge overnight...use during the day. I think the night to day difference for me is 23p per kwh...maybe save £10 per day.
sardine
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They have a 15hp uprated Yanmar L100 knock off engine in that.
I have a 15kva 3 phase ups arriving soon, trick will be working out how to charge it from single phase - it has two battery banks, 250V each. I'm thinking a pair of transformers and rectifiers, opposed polarity, one for each bank. Trouble is I might have to regulate the voltage down, and this voltage electronics makes me nervous...
And, it's another project...
Maybe a pair of variacs is what I want?
And, it's another project...
Maybe a pair of variacs is what I want?
HughF
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I believe there is a 77kWh too
HughF
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Yep, Paton VDI-250... It gets run of any old generator. The input rectifier is rated to 415v and the caps are good for 440 - you'd have to try really hard to blow it up.
finyuk2005
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yeah its quite a beast! much bigger physically,
would be good for a go-cart i thought!
Pigeon_Droppings2
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We'll find out when the VTL cable arrives.
I think mg say 2.2kw...but I've read on the forums people saying they're good for 7kw....only one way to know for sure I think.
7kw does not seem unreasonable given it can charge on AC at 7kw...I'm guessing it's the same tech being used in the opposite direction!
HughF
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It is, it’s the onboard charger being used as an inverter. Different to v2g which uses an off-board inverter and grabs pack voltage though the ccs connector (or more commonly chademo, as ccs v2g support is poor)
I'm not sure what taper the Chinese use on their generator builds.
It could be a British (common), Japanese (Japan-built complete gens) or Italian Taper (Italian Market machines). Note a lot of Japanese engined gensets are British Taper - because the engines were bought in by the container load & assembled into gensets in Europe/UK (Pramac, Stephill, Harrington etc sets).
I'd not just assume that a Zanardi is a direct fit onto the Kipor engine Taper shaft. Also I suspect that the Zanardi welder alternator is quite a bit longer than the Kipor item & won't fit in the Kipor chassis.
4-pole 1500rpm industrial alternators are vastly superior in general over 2-pole stuff, which are portable sets designed for power tools and pretty insensitive, unfussy loads. A 4-pole with a 2/3 pitched winding, more mass a decent exciter and AVR will provide a better, more stable output than any 2-pole set.
The greater mass & flywheel momentum give better stability and better motor-starting capability (along with the better alternator). Hefty flywheels is how relatively small output Lister SR/ST & TS/TR gensets punch well above their weight.
If you've the room & can find a decent one for sensible money, an industrial genny is just so much better tbh.
Tbh, alot of capacitor regulated alternators work very well & very reliably. Markon, Meccalte & NSM capacitor alts all work very well.
They have to be set up right & not messed with, as a Capacitor Alt gains (& loses) voltage with engine speed/frequency. Stay within the limits and they are fine for most loads.
They do not like inverters though for sure. I've seen a capacitor fail in just a couple of hundred hours driving an inverter. It's only a guess, but I think the high frequency switching going on in the inverter, ages the capacitor.
Mind you inverters & UPS especially are voltage and frequency sensitive AND create Harmonic Distortion - which is also why they don't "get on" with a lot of small engined 2-pole, 3000rpm gennys (even with an AVR)
Brilliant engines. Short of putting sand or marbles in them, they are pretty indestructible.
Those old Brush alternators are great also.
finyuk2005
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Interesting you saying the voltage and the frequency are affected by engine speed, i always thought it was only frequency that was affected,
but i once tried to fix up an old pramac 6kw that had destroyed the old alternator, i bought a new one and fitted it, and completely rewired, new gauges and outlets, the works!
I could not for the life of me get it to hold a steady voltage or frequency, under even just a few Kw from a heatgun it would shoot up to 300v sometimes! i gave up and used the engine to convert a DC gennie lift to diesel,
Ages later i figured out that someone at some point in its life had swapped the fuel pump for a variable speed one as opposed to a fixed speed, they are 2 different part numbers, so thats why it couldnt keep a steady speed!
Capacitor Alts with the relatively crude small engine governor's and low power motors tend to be set up off-load at around 52.5Hz (3180rpm) to allow for some droop under load so a fit one at max load might dip to 49Hz.
Most electrical loads are remarkably tolerant so the voltage & frequency variation is well within their working range - & these sets weren't designed to run sensitive electronics.
Frequency only is affected (within limits!) on good AVR controlled stuff. UPS are fussy about both volts & Hz, so upgraded PMG or Auxiliary Winding. spec alternators are specified for those loads, along with electronic engine governor's to tighten up the frequency variation.
I have a cap controlled old Honda EX1000 suitcase caravan gen - and it can run 3 x SMPS Chargers for e-Mountain bikes without any issue - it seems that the chargers are really very unperturbed by quite wide volts & Hz ranges.
