balancing 3 phase
balancing 3 phase
(OP)
If I have 208/230 3phase coming into a control ciruit to run a 3 HP motor, and am pulling a leg to use as a 120v supply (with the neutral) for control circuitry, a) will this unbalance the load to an unacceptable level b) if so how can I "rebalance" it?





RE: balancing 3 phase
If you're talking about something other than 208/120V please clarify.
RE: balancing 3 phase
RE: balancing 3 phase
RE: balancing 3 phase
RE: balancing 3 phase
respectfully
RE: balancing 3 phase
But as long as 120V loads are small fraction of the three-phase loads, the imbalance does not cause any signficant problems.
RE: balancing 3 phase
RE: balancing 3 phase
You want to limit or isolate the energy in the control circuit.
You need to change your plant voltage to your chosen control voltage.
The unbalance to the system from a starter coil is negligible.
On the subject of balanced loads:
If you have a 120/208 volt star system you balance your load on the panel by moving loads from one phase to another phase.
If you are using a 240/120:240 volt 4 wire or center tapped delta system it depends.
Four wire delta systems often run unbalanced. They are often a mix of single phase loads and three phase loads. The transformers may be sized accordingly. If you don't know what you are doing, DON"T DO IT.
respectfully