The diagram shown in P 12.7-7 has two threephase loads that form part of a manufacturing

Chapter 12, Problem P12.7-7

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

The diagram shown in P 12.7-7 has two three phase loads that form part of a manufacturing plant. They are connected in parallel and require 4.16 kV rms. Load 1 is 1.5 MVA, 0.75 lag \(p f \Delta\) connected. Load 2 is 2 MW, 0.8 lagging

pf, Y connected. The feeder from the power utility’s substation transformer has an impedance of 0:4 + j0:8 \(\Omega\)/phase. Determine the following:

(a) The required magnitude of the line voltage at the supply.

(b) The real power drawn from the supply.

c) The percentage of the real power drawn from the supply that is consumed by the loads.

Questions & Answers

QUESTION:

The diagram shown in P 12.7-7 has two three phase loads that form part of a manufacturing plant. They are connected in parallel and require 4.16 kV rms. Load 1 is 1.5 MVA, 0.75 lag \(p f \Delta\) connected. Load 2 is 2 MW, 0.8 lagging

pf, Y connected. The feeder from the power utility’s substation transformer has an impedance of 0:4 + j0:8 \(\Omega\)/phase. Determine the following:

(a) The required magnitude of the line voltage at the supply.

(b) The real power drawn from the supply.

c) The percentage of the real power drawn from the supply that is consumed by the loads.

ANSWER:

Step 1 of 7

(a)

The apparent power of the Y connected load,

           

           

           

 

Add to cart


Study Tools You Might Need

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back