Yes, the 230V/133V is your 3-phase output.
You should connect your miners like this.
A,B legs to miner 1
B,C legs to miner 2
C,A legs to miner 3
Then continue to rotate like this until maximum power is reached. I would not use the neutral. I would not use the single phase output.
Topic: Harmonics in electrical system from mining off genset? (Read 220 times)
I usually measure .97 PF on APW++ PSUs from Bitmain.
You can avoid almost all harmonics issues by avoiding non-resistive loads that use the neutral.
So, run all your power supplies, pumps and fans on 240V, but the coffee pot is fine on 120V.
You can avoid almost all harmonics issues by avoiding non-resistive loads that use the neutral.
So, run all your power supplies, pumps and fans on 240V, but the coffee pot is fine on 120V.
The gen outputs 3-phase, so I have it configured to 230V L-L, 133 L-N. The 240/120 is single phase I believe?
Thanks for the responses guys, I didn't think I needed to worry about filtering but a recent conversation with a genset supplier spooked me.
I usually measure .97 PF on APW++ PSUs from Bitmain.
You can avoid almost all harmonics issues by avoiding non-resistive loads that use the neutral.
So, run all your power supplies, pumps and fans on 240V, but the coffee pot is fine on 120V.
You can avoid almost all harmonics issues by avoiding non-resistive loads that use the neutral.
So, run all your power supplies, pumps and fans on 240V, but the coffee pot is fine on 120V.
Yes harmonics issues are possible if using cheap PSU's. However, most today have PFC - Power Factor Control - that mitigate the problem. Most will advertise if they have PFC and give a Power Factor rating. A perfect resistive load gives a PF of 1.0 and most PSU's will be around 0.85 to 0.9
^ This.
More usual case to end up in problems with harmonics is that if you have a lot of load consisting frequency converter controlled electrical motors for example.
So if you use good PSUs with PFC inside, harmonics shouldn't be an issue.
Yes harmonics issues are possible if using cheap PSU's. However, most today have PFC - Power Factor Control - that mitigate the problem. Most will advertise if they have PFC and give a Power Factor rating. A perfect resistive load gives a PF of 1.0 and most PSU's will be around 0.85 to 0.9
Ahh k. Thanks gents. So I take it the Bitmain supplied PSU's have this as I recall their powerfactor is 0.95
Yes harmonics issues are possible if using cheap PSU's. However, most today have PFC - Power Factor Control - that mitigate the problem. Most will advertise if they have PFC and give a Power Factor rating. A perfect resistive load gives a PF of 1.0 and most PSU's will be around 0.85 to 0.9 or better.
There are always harmonics present when using switched-mode power supplies.
If the harmonics start to be an issue, you can reduce the impact by adding a harmonics filter system in to your electrical system.
If the harmonics start to be an issue, you can reduce the impact by adding a harmonics filter system in to your electrical system.
Hey guys,
Curious I was talking to a genset vendor today and he mentioned running "server-like" equipment (Antminers) off of a genset may potentially have issues with harmonics and require harmonic conditioning to protect the alternator.
Should I be concerned about this?
Curious I was talking to a genset vendor today and he mentioned running "server-like" equipment (Antminers) off of a genset may potentially have issues with harmonics and require harmonic conditioning to protect the alternator.
Should I be concerned about this?
Jump to: