1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sladkaya [172]
3 years ago
5

How dose north america achieve 480VAC with 3 pole 120VAC

Mathematics
1 answer:
makvit [3.9K]3 years ago
7 0

Answer:

There are a variety of factors driving the

adoption of 415/240VAC distribution. First,

distributing at these increased voltages

enables overall efficiency to be enhanced

by eliminating the need for a voltage

transformation along the power path. For

example, in a 415V system, the L-N voltage

is 240V, which is compatible with most all IT

loads. By shifting the UPS output distribution

voltage to 415/240 V three-phase (L-L/

L-N), most of the existing servers today can

be powered with 240V single-phase (L-N)

without any intermediate transformation.

Removing the need for a transformer

streamlines the power path and can increase

efficiency approximately 1.5 percent.

The adoption of a 415/240VAC distribution

model also can yield additional savings at

the device-level in the form of increased

efficiency for server power supplies. As

previously mentioned, today’s power

supplies can handle a wide range of incoming

voltages. Based on the actual voltage being

fed into the power supply, efficiencies can

range from as low as 80 percent (at 100V

nominal) to as much as 94 percent (at 240V

nominal) across all manufacturers.

Furthermore, while the typical efficiency

differential between 240V and 208V gained

at the server power supply today is a relatively

minimal, only 0.3 percent across most of

the load range, the efficiency differential

between 240V and 120V servers can be as

much as 2 percent for a given power supply.

It is this value that often gets overstated by

some manufacturers when comparing 415V

distribution to “traditional methods,” as

there are relatively few servers or peripherals

installed today that are operating at 120V.

Step-by-step explanation:

You might be interested in
A stadium can seat 46,000 people for a baseball game. One day, 49,442 people attended a game. How many people had to stand becau
suter [353]

Answer:

The answer is B.

Step-by-step explanation:

So, there are 46,000 seats for a baseball game and 49,442 attended. You need to subtract 46,000 from 49,442 to get the answer that is 3,442.

5 0
3 years ago
Read 2 more answers
Help please; I need the right answer ​
Ad libitum [116K]

Answer:

C.

Step-by-step explanation:

\cos x+\sqrt{2}=-\cos x \\ 2\cos x = -\sqrt 2 \\ \cos x = -\dfrac{\sqrt 2}{2}\\ \\ \Rightarrow x = \pm \arccos\Big(-\dfrac{\sqrt 2}{2}\Big)+2k\pi,\quad x\in \mathbb{Z}\\ \Rightarrow x =\pm\dfrac{3\pi}{4}+2k\pi\\ \\ \\k = -1 \Rightarrow x < 0\\\\ k=0 \Rightarrow x 2\pi

3 0
3 years ago
Read 2 more answers
What is the ratio to 46 pull ups in two minutes
Ann [662]
Wouldn’t it be 46:2 and also 23:1?
3 0
3 years ago
Read 2 more answers
Points and Brainliest Giveaway!<br><br> What is the simplified form?<br> (2x^2 + 3x) + (4x^2 -7)
nika2105 [10]

Answer:

Explanation:

We can factor the numerator and denominator as;

(

x

−

2

)

(

x

−

1

)

2

x

(

x

−

1

)

We can now cancel common term in the numerator and denominator:

(

x

−

2

)

(

x

−

1

)

2

x

(

x

−

1

)

⇒

x

−

2

2

x

However, we cannot divide by

0

so we must exclude:

2

x

=

0

⇒

x

=

0

and

x

−

1

=

0

⇒

x

1

x

2

−

3

x

+

2

2

x

2

−

2

x

=

x

−

2

2

x

Where:

x

≠

0

and

x

≠

1

Or

x

2

−

3

x

+

2

2

x

2

−

2

x

=

x

2

x

−

2

2

x

=

1

2

−

1

x

Where:

x

≠

0

and

x

≠

1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
when you use the distance formula you are building and blank whose hypotenuse connects two given points (A) parallelogram (B) ri
Marrrta [24]

the answer to you're question is B ; Right Triangle

7 0
3 years ago
Read 2 more answers
Other questions:
  • Mr. Best wants to plant 4 rows of tomato plants. Each row has 8 plants. He also wants to plant 3 rows of cucumber plants. Each r
    5·1 answer
  • What is the area of the composite figure
    10·1 answer
  • Please help, Find the Quotient, simplify your answer, Show your work
    6·1 answer
  • Which ordered pairs in the form (x, y) are solutions to the equation 
    14·2 answers
  • the original price for a Jacket is $79.95 the sale price for the sane jacket is $62.79, if you have 59.20, in your pocket how mu
    6·1 answer
  • Anyone know how to do this? Thanks in advanced
    6·1 answer
  • Graph the function and label its intercepts. Round the intercepts to two decimal places.pt.2​
    12·1 answer
  • The hypotenuse of a right triangle measures 19 meters. One leg measures 15 meters. To the nearest tenth of a meter, what is the
    14·1 answer
  • Roots of the quadratic equation 0=2x^2+12x-14
    13·2 answers
  • Select all that are true for the following quadratic: y = 2 x 2 + 3 x + 5
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!