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diy solar

(Current Connected) Dexter knifing his way through the BS!

Daddy Tanuki

Solar Wizard
Joined
May 11, 2021
Messages
2,232
Location
Flanks of Mount Fuji
So the saga comes to a conclusion. last year I attempted to order the EG4 chargverter from another vendor. and lost out on the Black friday prices and was basically ignored until well after the sale. (they still spam my inbox though).

then mid december I found out that Current Connected also offered the Chargeverter, but were out of stock. started Teasing Dexter online about being out of stock and out fo the blue he starts a pre-order signup list.

So I figured what the heck, lets try it. so about a month ago CC got some units in. I ordered and a month later it arrives. Many of you will think A MONTH! remember I am stationed overseas that means that this gear had to go through the USPS and then through the Military postal system as well. So this was actually on point time wise for a large item like this.

Dexter, tell your shipping department (you probably :LOL: ) Job well done.

I might have some questions later for you and if this works to expectations I will order at least one more. (3 phase 208 questions, Two units to balance genset or three units to balance genset).
 
Dexter on a standard 3 phase Denyo generator, should I use two chargeverters or three to keep the load balanced?
Two could be unbalanced, depending on how you set it up and the capacity of the generator. I'm going to assume it's a 120v/3-phase wye system (you have a neutral) and the generator is capable of it's actual power rating and it can be run at 100% load. In the real world, add 25% headroom...

Let's say CV1 is connected to L1/L2 and use a simple number, 25A of load on each phase -
We would have the following load profile:
L1: 25A L2: 25A L3: 0A - 5.2kVA load - however, it would need to be at least a 9-10kW generator to supply this many amps per phase.

If you connect CV2 in 208v mode to either L1/L3 or L2/L3, you would have a phase with 50A of load. This would be unbalanced and a problem if the generator is not at least
L1: 50A L2: 25A L3: 25A - 10.4kVA load - this would require at least an 18kW generator due to amps per phase limitation.

CV2 could be connected to L3/N and run at half power in 120v mode. Thus, you would have the following load per phase:
L1: 25A L2: 25A L3: 25A - 9kVA load - this would work on a 9kW generator.

If the generator is 18kW or larger, then use three chargeverters. CV1 on L1/L2, CV2 on L3/L1 and CV3 on L2/L3.
L1: 50A L2 50A L3: 50A - 18kVA load - 18kVA generator.

So, really, it all depends on what size generator. There are plenty of options to make it work one way or another.
 
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