Hello,
I am looking for some advice on the general direction I should go with my Bitcoin mine. I will not be the engineer or electrician responsible for the nitty gritty details, but I would like some advice on the overall design so I can work alongside those responsible for the details and begin sourcing equipment.
My background is in electrical engineering, but I am far from a power engineer, so please forgive me if I may ask some nonsense questions. I will try to be as descript as possible, but let me know if I leave anything crucial out.
I will be taking a 13.2kV nominal service drop, that should be closer to 13.8kV as I'm very close to the substation.
I intend to have a 3MVA 13,200V or 13,800V primary transformer.
I need to supply an initial 4 distribution panels, and would like to easily be able to expand to a total of 8 panels (ideally).
Each panel is rated for a total of 360kW, and requires a 415Y/240V 3-phase connection.
This should be up to ~500A per panel at 415V
~430A at 480V
Each panel comes installed with a 600A fused disconnect.
Total of all 8 panels at full rating ~4,000A at 415V
~3,450A at 480V
In order to pull this off in my required 12 week lead time I see the following design as the best option...
Design 1
3MVA 13.8kV/415Y primary transformer (in-stock)
2x 2500A PRL-C switchboards (in-stock)
Connect 2500A PRL-C inline with transformer and 4 panels. Double this for 8 panel expansion.
However, it may be cheaper to go the 480V route so that I can get away with a 4,000A main switchgear...
Design 2
3MVA 13.8kV/480D primary transformer (need to find one, likely much cheaper than Design 1)
4,000A main switchgear, with 4x 1600A feeder breakers (in-stock)
4x 800kW 480D/415Y transformers, 1 per 2 panels (in-stock, cheap)
Connect 800kW 480D/415Y transformer to each 1600A feeder
Connect 415Y secondary to 2 panels per transformer
1x 480D/415Y transformer per 2 panels
With a total draw from 8 panels being ~3,450A, would a 4,000A main work? (86.4%)
I'm really not sure if this is the place to be asking this, but looking for any input I can get.
One of my main questions is: Do I even need a fused switchgear if my panels have fused disconnects? Can these panels just be hooked directly to a 415Y secondary?
Appreciate you all and any insight you can give me.
I am looking for some advice on the general direction I should go with my Bitcoin mine. I will not be the engineer or electrician responsible for the nitty gritty details, but I would like some advice on the overall design so I can work alongside those responsible for the details and begin sourcing equipment.
My background is in electrical engineering, but I am far from a power engineer, so please forgive me if I may ask some nonsense questions. I will try to be as descript as possible, but let me know if I leave anything crucial out.
I will be taking a 13.2kV nominal service drop, that should be closer to 13.8kV as I'm very close to the substation.
I intend to have a 3MVA 13,200V or 13,800V primary transformer.
I need to supply an initial 4 distribution panels, and would like to easily be able to expand to a total of 8 panels (ideally).
Each panel is rated for a total of 360kW, and requires a 415Y/240V 3-phase connection.
This should be up to ~500A per panel at 415V
~430A at 480V
Each panel comes installed with a 600A fused disconnect.
Total of all 8 panels at full rating ~4,000A at 415V
~3,450A at 480V
In order to pull this off in my required 12 week lead time I see the following design as the best option...
Design 1
3MVA 13.8kV/415Y primary transformer (in-stock)
2x 2500A PRL-C switchboards (in-stock)
Connect 2500A PRL-C inline with transformer and 4 panels. Double this for 8 panel expansion.
However, it may be cheaper to go the 480V route so that I can get away with a 4,000A main switchgear...
Design 2
3MVA 13.8kV/480D primary transformer (need to find one, likely much cheaper than Design 1)
4,000A main switchgear, with 4x 1600A feeder breakers (in-stock)
4x 800kW 480D/415Y transformers, 1 per 2 panels (in-stock, cheap)
Connect 800kW 480D/415Y transformer to each 1600A feeder
Connect 415Y secondary to 2 panels per transformer
1x 480D/415Y transformer per 2 panels
With a total draw from 8 panels being ~3,450A, would a 4,000A main work? (86.4%)
I'm really not sure if this is the place to be asking this, but looking for any input I can get.
One of my main questions is: Do I even need a fused switchgear if my panels have fused disconnects? Can these panels just be hooked directly to a 415Y secondary?
Appreciate you all and any insight you can give me.
