Bitmain Release new 7NM Chip and Antminer S17 & T17

[DaveF]

okay we (not me but some bitcointalk members) have had a few psu's die on 240 volt setups and not on the 220 volt setup's

I ran a thread for reports on the s15's reliability and only 2 maybe 3 psu's died.

I found this item which should do 2 s15's safely  as it really does keep volts very close to 220volts.

but it is woefully wired (14 gauge) and I can only recommend running 1 s15.

https://www.ebay.com/itm/Norstar-5000-Watt-Step-UP-and-Down-Voltatge-Regulator-Transformer-Converter/332955089461?

I ordered this one which may also do only 1 s15 but is cheaper

https://www.ebay.com/itm/Norstar-4000-Watt-Step-Up-and-Down-Voltage-Transformer-with-Voltage-Regulator/332607784072?

my hope would be it has 12 gauge wires and can really do 2 s15's  if it can do that it would be decent gear.

Do you have the actual wattage pull at the wall @ 110V for this running the S15?
Just doing some rough planning for new runs in the warehouse, but I can only pull single phase 110.

Thanks,
Dave

[1713954547]

1713954547

[1713954547]

1713954547

[1713954547]

1713954547

[1713954547]

1713954547

[minefarmbuy]

imho...wont be cost effective re: ROI.  those UPS will only do 1 unit, upfront costs would be prohibitive..im also looking into a cost effective voltage regulator solution running either straight from my breakout board(220-240V input) or alternatively wall plug.

I imagine there's a UPS that I could plug my PDU into?

[philipma1957]

Do you have the actual wattage pull at the wall @ 110V for this running the S15?
Just doing some rough planning for new runs in the warehouse, but I can only pull single phase 110.

Sorry did not test. I did test 240 to 220 transformer 1585 watts full power.

I did test 240 wall to s15   1565 watts.  As the transformer wastes 1.5% to change 240 to 220

So if you have to do 110 you will need a dedicated 20 amp circuit breaker and I would prefer 10 gauge copper over 12 gauge

[Artemis3]

Sorry did not test. I did test 240 to 220 transformer 1585 watts full power.

I did test 240 wall to s15   1565 watts.  As the transformer wastes 1.5% to change 240 to 220

So if you have to do 110 you will need a dedicated 20 amp circuit breaker and I would prefer 10 gauge copper over 12 gauge

From 110v? I'd say 30a circuit and gauge 8 wire

Actually, it would be smarter to do the transforming next to the panel, and send the already higher voltage over the wire. Then you can be fine with 15a/gauge 14 (or less).  Of course you do need the higher amp breaker/and lower gauge wire between panel and transformer.

[philipma1957]

From 110v? I'd say 30a circuit and gauge 8 wire

Actually, it would be smarter to do the transforming next to the panel, and send the already higher voltage over the wire. Then you can be fine with 15a/gauge 14 (or less).  Of course you do need the higher amp breaker/and lower gauge wire between panel and transformer.

20 x 110 = 2200 x .8 = 1760

it pulls about 1600    that is 14.9 amps     that 1760 is 16 amps  rates  80% 24/7/365  if he uses 10 gauge  

I have pulled 22amps on 10 gauge copper for more then a year in a row 24/7/365 at  distance of 40 feet.

but I think both units  I mention  can not do this  as they would pull say 15 amps  and there is no way they will last pulling 15 amps.

the wire is 14 or 15 gauge  and that is not meant to do that much amps. 24/7/365.

[Artemis3]

Reading the gauge article it mentions that they can work better when alone and ventilated than together with other wires sharing a racetrack or pipe. In such case you are supposed to reduce their "ampacity".

14gauge can take 15amps if the pair is, say, alone inside a pipe from the breaker to the plug. An S9 pulls like 6A at 220v, but that would be more than twice that at 110v so think 15a (you could/should measure it). Since I'm recommending to put the transformer next to the panel (not next to the miner) that 110v run should be really short, which is what you want to reduce resistance and can cheaply use thicker wires (gauge 12 or less) from breaker (20a) to transformer.

Of course if you have multiple 110v phases you could just use a couple of that and have like 208ish without any transformer (you just send both hots to that circuit). You are supposed to change the plug at the end so its clear that its a higher voltage plug, ie: Nema 6:

[jabby]

looks like they released the 2nd gen chip of this already !?!

*** ANNOUNCED***

[philipma1957]

No it can not be ordered as of today so it is not released.

[jabby]

I am sure they are mining with it already. I never said it was shipping or being sold.

[sidehack]

I never said it was shipping or being sold.

Then how do you define "released"?

[jabby]

Technically there are many different ways to use released.

Does announced make you feel better... lol.

[philipma1957]

Then how do you define "released"?

Semantics. Which is why I argued with him. Btw I would guess they have them at bitdeer and that they charge s15 power rates while they mine with the s17.

As there is zero oversight on this.

[jabby]

Semantics. Which is why I argued with him. Btw I would guess they have them at bitdeer and that they charge s15 power rates while they mine with the s17.

As there is zero oversight on this.

Who is arguing with you? All I see is a discussion.

[sidehack]

Announced is more accurate, since as far as we know no working models are operating or have been delivered to anyone.

The difference between "discussion" and "argument" is also subject to semantics.

Maybe we should move back to the topic proper?

[fanatic26_]

I am sure they are mining with it already. I never said it was shipping or being sold.

Of course they are, its called product testing....

[philipma1957]

Of course they are, its called product testing....

Let us know if you can  about any specs.

Thanks In Advance

I have only seen 30 at the chip from bitmain

and one person mentions 1200 watts for 34th  which is really good. about 35.3 watts a th

Fans and controller = maybe 50 watts

so 1150/34000 = 33.8 watts per th chipwise

I figure 1275/34000  37.5 per th is the best it can do power rate.

I figure a 30 chip  can do 20% so 36 watts a th

36 x 34th = 1224 + 51 = 1275.

two screen shots from bitmain show a design change in psu placement
my guess is s17 will do the z11 design  you could fit more on a shelf

[sarcheer]

If Bitmain follows the Z11, then that means they've gone back to not using built-in PSU's (which I would love).

[philipma1957]

If Bitmain follows the Z11, then that means they've gone back to not using built-in PSU's (which I would love).

we will have to wait for now. maybe in a few months we will get an idea of what the plan is.