IEEE Power & Energy Magazine - July/August 2020 - 79

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Revit Model

System One-line

8
.4
3-#1, 1#1, 1-#8

3-#250, 1#250, 1-#6

3-#350, 1#350, 1-#4

3-#1, 1#1, 1-#8

kV

3-#250, 1#250, 1-#3

.4

8

kV

T-SCV
500 kVA
.48-0.48 kV
4%
T-SCV-S

PANEL

CURRENT IN AMPERES X 100 AT 480 VOLTS
1000

.8

1

2

3

4

5 6 7 8 9 10

2

3

4

5 6 7 8 9 100

2

3

4

5 6 7 8 9 1000

0.15
TX-2
-2
1000 / 1288 kVA
6%

SWG-4

40
30

Total Fault Fault

Equipment Duties

X/R
Ratio

Mult
Factor

Asym
Amps

Bus kV

M-1

0.480

19480.3

3.69

1.19

23188.3

LVPCB

MCC-1

0.480

20032.6

3.55

1.18

23640.9

LVPCB

20032.6

MCC-2

0.480

19779.7

3.43

1.17

23181.0

LVPCB

19779.7

PNL-1

0.480

8882.5

3.73

1.19

10597.4

LVPCB

PNL-2

0.208

5961.4

2.11

1.07

6377.3

LVPCB

5961.4

SWG-4

0.480

24127.6

6.18

1.33

31990.4

Equi Type

LVPCB

24127.6

coverall
Flash Hazard inches - Arc Flash4' - 0"or arc rated
Flash
Hazard Boundary
2
18
pants
cal/cm at
arc rated 6.0
cal/cm2 at 18 inches
shirt and
- Arc Flash Incident
Arc-rated
Energy
cover is removed
Hazard when
0.48
kV Shock
kV Shock Hazard
0.48
when cover is removed
3' - 6"
Limited Approach
Limited Approach
Approach
3' - 6"
1' - 0"
Restricted
Restricted Approach
1' - 0"
(Fed By: 27B) ONLY
Equipment Name:
t Name: MCC-23A CONFIGURATION
SWG-4 (Fed By:
Equipmen
SYSTEM
VALID FOR NORMAL
18A)
NORMAL
SYSTEM CONFIGURATIO
VALID FOR
N ONLY

Duty Amps 4' - 0"
6.0
19480.3

8882.5

8

Plug = 1600
1.1 (1760A)
Cur Set = 1
LT
T Band = 1
STPU
2.5
S
TPU = 2
.5 (4400A)
ST
S
T Delay
Dela
elay
y = Int
ST
S
T Delayy I²t
I² = Out
Override
O
verride = 50000A

6
5
4
3
2

400

BL-1
GE AKR-50
1600/1760

M-1

200

100
80
60
50
30
20

10
8
6
5

BL-5
C-H HFD
225/150

2

4
3

1

1
.8

BL-3

.6
.5

.6
.5

MVT-9
GE MVT
MV
T-9
Sensor = 800

.4

Plug = 800
Cur
C
ur Set = 0.5
0 (400A)
LT Band = 1
IInst
nst = 4 (3200A)

.3
.2

BL-5
C
uttler H
am
m
Cutler
Hammer
Series C
HF
HFD
Frame
(150AT)
F
rame = 225A (150A
Trip = 150

.03

.4

BL-1
18627A

.3

C-6
1 - 400 kcmil CU

TX-2
1000 / 1288 kVA
INRUSH

.1
.06
.05

.8

1

2

3

4

5 6 7 8 9 10

2

3

4

5 6 7 8 9 100

2

3

4

Automated
Protective
Device
Coordination

.08
.06
.05
.04
.03
.02

BL-5
20574A
.5 .6

.2

.1

BL-3
29249A

.02

.01

300

40

BL-3
GE AKR-30H
800/400

.8

.08

.04

Short Circuit
Calculations

1.90

BL-1

GE MVT
MV
T-Plus
MVT-Plus
Sensor = 1600

10

5 6 7 8 9 10000
1000

TX-2
1 / 1.288 MVA
13.8 - 0.48 kV
6%

.13

18.71

200

20

Sym
Amps

4

600
500

300

80

3 PHASE Fault

3

800

400

60
50

d
Risk Hazar
and Shock
Arc Flash and Shock
Arc Flash priate PPE Required
Appro
Appropriate PPE Risk Hazard
Required
Boundary
Incident Energy

2

TX-2
FLA

600
500

100

Vpu = 1.00

Bus Name

.5 .6

800

24

Analysis and
Auto-Design
LV Momentary Report

EasyPower 10.4.0.198 10/11/2018 10:00:07 AM C:\...\Protection-1..dez
EasyPower LLC
Comments:

17.58

The Europeans were transmitting power using hydraulic (pressurized water)
systems, compressed air, fuel gas, wire
ropes, and steam. From our perspective
more than a century later, it is difficult
to appreciate how humble the position of
electricity was as a means of power transmission. A closer look at the competing
systems will help us to appreciate what
Adams and his cohorts were up against.
✔ Steam was the power transmission medium with which engineers were most familiar. By
1890, steam engines were a mature technology. They were being
improved continuously (the valve
gear designed by Corliss is an

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Oneline Faster With
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.48

European Developments

PAIN!

19

Construction Company land as well as
to the towns of Tonawanda and Buffalo.
The means of transmission was still
to be determined. Adams expected
that, in addition to electricity, transmission could be by "rapidly running
cables, by hydraulic power, or by compressed air."

Stop The

TIME IN SECONDS

One might
have expected
Westinghouse
to propose
ac, but he
suggested
compressed air.

its power transmission distance to
a few hundred feet at most.
✔ Fuel gas was considered because of the extensive use of
ma nufact u red gas for bot h
lighting and gas engine applications. Because of this, gas
was cheap to produce. However, leakage of gas at the many

example of this), but their losses
were tremendous. A high-efficiency steam engine boiler system
seldom exceeded 20%, but the
design and operating principles
were well understood by engineers. This was certainly not the
case with electricity, particularly
ac. Steam's low efficiency limited

TIME IN SECONDS

forming an international commission
was the best course. Sellers agreed. The
side canals of Evershed's scheme were
to be abandoned and the tunnel shortened to no more than 8,000 ft.
A meeting was held on 18 June
1890 in Adams' London apartment
at Brown's Hotel. Adams pointed out
that, in Europe, power generation was
not distributed over a long series of
inlet canals but was concentrated. He
believed that at Niagara Falls, power
should be generated at one place and
transmitted to the factories on Cataract

5 6 7 8 9 1000

2

3

4

.01
5 6 7 8 9 10000

CURRENT IN AMPERES X 100 AT 480 VOLTS

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IEEE Power & Energy Magazine - July/August 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - July/August 2020

Contents
IEEE Power & Energy Magazine - July/August 2020 - Cover1
IEEE Power & Energy Magazine - July/August 2020 - Cover2
IEEE Power & Energy Magazine - July/August 2020 - Contents
IEEE Power & Energy Magazine - July/August 2020 - 2
IEEE Power & Energy Magazine - July/August 2020 - 3
IEEE Power & Energy Magazine - July/August 2020 - 4
IEEE Power & Energy Magazine - July/August 2020 - 5
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IEEE Power & Energy Magazine - July/August 2020 - 92
IEEE Power & Energy Magazine - July/August 2020 - Cover3
IEEE Power & Energy Magazine - July/August 2020 - Cover4
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