Topic: Flickering house lights when turning on Antminer S19 XP (Read 237 times)

you could set it up with efficiency firmware at a stable power location, maybe a local business, to make it run at less watts, say 2000W instead of 3300W and then bring it home and test it again, there is braiins OS, vnish and asic.to, i know that users of these achieve a better efficiency - W per TH ratio - at much lower power draw, braiins OS have people getting 101TH at 1850 Watts on s19xp, which is 18.35J/TH

1850 Watts might just let you use the miner with your power supply

Good day mikeywith,
Thank you for your inputs!

I watched the video and now understand what you mean by the need for static voltage stabilizer. In order to know if I need a static voltage stabilizer, I'll test first my normal voltage with a digital meter as suggested by philipma1957. Depending on the test, you might be right, mikeywith.

With your inputs and the information from the digital meter readings, I'll go back to my seller to look, compare, and test the static voltage stabilizer versus the AVR (i.e. servo voltage stabilizers). I'll specifically ask the change of the input voltage to the percentage change in the rated capacity.

This tip is particularly useful:
I can see the physics of a decreased input voltage which would lead to a decreased rated capacity for the AVR.

Yes philipma1957, I am also considering whatsminer m60's and gear. They might be the best of the Miners currently based on reviews. Thanks for the tip and for the introduction/recommendation to mikeywith!

STOP! Don't get those servo voltage stabilizers; they will most likely not work with your electricity. More on that later, but before I go there, I need to explain something that the "seller" did not.


He is lying or knows nothing about what he sells. There is no way in hell you would get 20KW from a 20KVA transformer; you need to break physics to achieve this. So don't listen to him and always assume a power factor of 0.8 to 0.9, which is a loss of 10-20%. The best this thing would give you would be 18KW, although I doubt that.

The second point is when you see a regulator/stabilizer rated at 20KVA, it means that is the possible output when the input voltage is at whatever the device is rated. So if it outputs 220v, then you must supply it with 220v for it to achieve the maximum capacity. Going under 220v on the input will decrease its capacity. This, of course, depends on the make of every stabilizer, but here are some average figures from a top Vitmeness brand that probably beats whatever you found.

For a 220v rated device, you get 100% capacity down to 200v.
At 175v input, you get 75% of the rated capacity.
At 150v input, you get 50% of the rated capacity.

So going with the assumption that your input voltage would drop to 150v, then to be safe, you would need to do the following calculations:

20KVA to KW = 16KW (PF of 0.8, which is probably what it is for whatever brand you posted above).
At 150v, a loss of 50% gives you 8KW total, and that would be fully exhausting it. So you might want to drop another 10-20%, and that gets you down to 7KW max.

Now back to why "not" use a servo voltage stabilizer:

This type of voltage stabilizer is "slow to react," and it's best suited for places where input voltage is low and is always low, i.e., not variable, doesn't change every minute or so. Given that every time it reacts to a voltage drop, it will likely cut the power to your miner.

Key word is: steady input voltage

If your power is not stable and constantly changes, you will have to get a static stabilizer. Without going into much info, I would just share this video for you to learn the differences:https://www.youtube.com/watch?v=xbf_nQYZhbs.

@phill, thanks for recommending me; it's always a great pleasure doing business with you.

I got a guy in Malaysia he carries whatsminer m60's

you may be better off with them.


https://bitcointalksearch.org/topic/wts-brand-new-whatsminer-and-antminer-5440613

mikeywith has been good to me

I also prefer the whatsminer gear.

Yes around $500.

I had a similar hyperlink to the description of Himark SVM-20KVA.

I asked my seller, and he assured me "100% true output power", meaning 20000watts (20KvA). The hyperlink also says "Rating of Output Capacity: 20000watts" despite the discrepancy of the 18,000 watts. You are right about the two (2) Antminer S19 limit, just to be safe. Although my computation for three (3) Antminer S21 total watts are as follows:

ANTMINERS’ WATTAGE CAPACITY*^
240 Volt x 23 Amps x 1.25 = 6,900 Watts
6,900 Watts x 3 Antminers = 20,700 Watts

*https://panther.ph/how-to-calculate-appliance-capacity-requirements/
^https://www.antminertech.com/shop/antminer-s21-bitcoin-miner-210th-for-bitcoin-mining/

The total 20,700 Watts of 3 Antminer S21s are a little bit over the 20KvA true output power assured by my seller. Considering the fluctuation in my area which was still able to run my Antminer S19 XP at a quiet/non-hashing rate, I assume low level watts input to the AVR which would not exceed 20KvA.

Yes, very large cables indeed. I am planning to buy 24mtrs Royal Cord 3C, Size: 5.5mm2 to connect the whole thing. My whole set up for a hypothetical three (3) S21 Antminer would be:

• 1unit ECB, 100Amps, 2Pole, 230Vac with housing
  1unit AVR, Capacity: 20kVA, Input/output: 230Vac, 60Hz., single phase
  1unit Distribution Panel Board
  Main: 100Amps, 2Pole, 230Vac
  Branches: 6 x 30Amps, 2Pole, 230Vac
  With grounding bus bar. (Note: all circuit breaker must be bolt-on type)
  3units Twist Lock Outlet; L6-30R, Female, wall mounted type with metal pull box
  3units PDU’s, 30Amps, 230Vac with L6-30P Input Connector and C13 outlets.
  6units Input Plug; C13 to C14
  24mtrs Royal Cord 3C, Size: 5.5mm2

I'll have 100Amps, 2Pole, 230Vac breakers in place to hopefully deal with on rush current.

Thank you for your invaluable inputs, friend. Your experience with your 8000 watt unit and 50amp breaker is a great tip.

I will look at it a bit.

I found one for sale in the P.I.   prices is 27,500 pesos about 500 usd


I found a Facebook page

https://www.facebook.com/himark.ph?locale=ms_MY


I found some specs

https://www.lazada.com.ph/products/himark-svm-20kva-20000avr-max-series-heavy-duty-avr-mcb-type-i3443163672-s17665972675.html?spm=a2o4l.tm80167379.7779702790.1.57d7f3ejf3ejxg.57d7f3ejf3ejxg



it claims to do 18,000 watts 24/7/365

I would not try that

It may do 2 s19's 24/7/365


but it will want very large cables/

It could cause onrush issues.

I had an 8000 watt unit that would trip the 50amp breaker due to onrush current.

https://www.amazon.com/gp/product/B072DV7QGL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1


I am not the right person to tell you it will work.

Good day philipma1957,

Here is the link to the picture:

https://down-ph.img.susercontent.com/file/sg-11134201-22110-qegec0s4j3jv70

Himark SVM-20KVA 20000Watts AVR / 20KVA AVR Max Series, 100% true output power, 100% pure copper
Specifications:

• Max Series
  100% Pure copper         
  Voltage: AC 160-250V               
  Frequency: 50Hz/60Hz               
  Voltage: AC 220V/110V +/-3%               
  Frequency(Inverter Mode): 50Hz/60Hz               
  100% true output power   
  Analog meters:
   1 ampere meter
   1 input voltage meter
   1 output voltage meter         
  Over/Low  Volt protection : Yes               
  Short Circuit: Yes
  Delay: Long 240s/Short 5s               
  AC-AC: 0.96               
  Noise level: ≤50dB               
  Temperature: -5-60 Degree               
  Humidity: 20% to 90%

give me a link to the 20kva product.

I can try to see if it is any good.

Copy on the digital meter. I'll look for one now to do the rest of your inputs. I also appreciate the tip on the S21. Thanks!

If we go by your "shitty power service, not a lot you can do other than complain to them" hypothesis, can the possible solution be buying an Automatic Voltage Regulator (Servo, 20KvA)?

get a digital meter amazon has them they are cheap.

test the power strip that allows you to connect the c13-c14 cables.

first test that strip without the s19. do the two hot lines  see if it is 210-235

then plug the miner in see the voltage drop.

more than 10 volts there is an issue.

one issue could be the internal wires can not handle 3300 watts.

in the usa a 30 amp circuit uses 10 gauge romex type cable.  thats about 2.5 mm

if you have proper wire and proper starting volts your issue could be shitty power service.

not a lot you can do other than complain to them. it may mean you can not mine

btw the s21 has been tested by a decent forum member and it pulls 3900 watts.

the way you describe your issue do not mine a s21 at full power.

wait for link.

https://bitcointalksearch.org/topic/antminer-s21-bitmains-game-changer-in-the-bitcoin-mining-world-5465088

Good day philipma1957,

Thank you for your inputs.

I ran my Antminer S19 XP assuming that my neighborhood would provide a steady/normal 220v. With that assumption, I bought a C32, 30Amps, 230Vac Circuit breaker, connected to the Power Line on one end and to the L6-30 Receptacle (L6-30R), 30Amps, 230Vac on the other. To the L6-30R, I connected my L6-30 Plug (L6-30P) input connector with C13 outlets. To the C13 outlets I connected C13 to C14 input plugs. The C14 output plugs then connects to my Antminer S19 XP.

When the lights flickered, I didn't have a tester with me to observe the fluctuations of the volts.

I forgot to mention that my suspicion of power fluctuation was bolstered because several of our electric fans slow and then stop as they age. Our electrician said that such slowing/stopping was caused by power fluctuations in the area.

I hope this helps. I am open to suggestions.

WE need to know what is your normal power volts are .

Ie  220-240

what are your amps per circuit.

Good day to all,
I live at the slum side of my city.
When I turned on my Antminer S19 XP, the house lights flickered. I suspect power fluctuation because the next thing that happened was my Antminer ran at a very quiet pace, kinda like when it throws off an error. It ran but was not hashing. I turned the Antminer ON and OFF at 30 minute intervals a couple of times, still not hashing.
Since I suspect power fluctuation, is it right to buy an Automatic Voltage Regulator (AVR) for my Antminer/s? What model and Kilovolt Amperes (KvA) of AVRs do you suggest to the current models (S21) now?