Series Double
Wiring up a parallel double WYE and a series double WYE?
I’m 90% sure I have this down but I want to make one final check. I have 6 resistors (R1 – R6). I’ll label the leads R1a, R1b, R2a, R2b….etc. I have a 3-phase power source with three leads (L1, L2, L3). How would I wire the two WYE’s.
Also, If each resistor was 1 ohm and the 3-phase voltage was 100 volts, then discuss the voltage, wattage, and current readings across the resistors and to center tap, etc.
I’ll choose a best answer in 4 hours.
I really appreciate you guys in the engineering section.
oh, and gals!
For parallel wye:
Connect L1 to R1a & R2a, L2 to R3a & R4a, L3 to R5a & R6a
Connect all together R1b, R2b, R3b, R4b, R5b & R6b this is neutral (N)
For each branch, R=0.5 ohms
For 100 V L-L; L1 to L2, L2 to L3 and L3 to L1, L-N = 100/sqrt3 = 57.7V
For each branch, I = 57.7V/0.5ohms = 115.5A
Power in each branch = 57.5V x 115.5A = 6667W
Total power = 20000W
For series wye:
Connect L1 to R1a, L2 to R3a & L3 to R5a
Connect R1b toR2a, R3b to R4a and R5b to R6a
Connect R2b, R4b and R6b together, this is N
For each branch, R = 2
For 100 V L-L; L1 to L2, L2 to L3 and L3 to L1, L-N = 100/sqrt3 = 57.7V
For each branch, I = 57.7V/2 ohms = 28.9A
Power in each branch = 57.5V x 28.9A = 1669W
Total power = 5000W
Mr Bean the Animated Series – Double Trouble