IEEE Power & Energy Magazine - May/June 2021 - 97

may/june 2021

Single Phase

· Single phase modeling and analysis including short
circuit, equipment duty, arc ﬂash, device
coordination and TCC plots.

Updates for NFPA 70 (NEC) 2020 and NFPA 70E 2021
· New and updated tables, labels and libraries to
support updated standards.

Revit® Integrator Updates

· This release includes support for Revit 2021 and
several other integration enhancements.

Productivity and Usability Improvements

· Multiple enhancements including quantity based
demand factor, TCC improvements, and error report
improvements.

EasyPower Power System Analysis

As Easy As
CURRENT IN AMPERES X 100 AT 480 VOLTS
1000

.5 .6

.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

4

300

18.71

200

100

SWG-4

1.90

20

3
2

M-1

200

100

Arc Fault
Bus Name

80

BUS-3
BUS-7

30

M-1

20

MAIN SWG
REFINER

10
8
6
5
4

BL-5
C-H HFD
225/150

3
2

SWG-4

Arc Fault
Bus kV
13.8
13.8
0.48
3.8
2.4
0.48

Upstream
Upstream
Trip Device Trip Device Equip Type
Name
Function
R-6

51/50

R-7

51/50

BL-3
R-18

Open Air
Open Air
Other

51/50

R-7

51/50

R-6

51/50

Switchgear
Switchgear
Switchgear

Electrode
Configuration

Electrode
Gap
(mm)

VOA

152

VOA

152

HCB

32

Est Arc Flash
Boundary
(inches)

Working
Distance
(inches)

32.1

+

30.5

+

31.6

+

Incident
Energy
(cal/cm2)

26
26
18

1.7
1.5
3.8

VCB + HCB

152

189.3

+

18

VCB + HCB

104

261.9

+

18

122.8

32

213.2

+

18

135.1

VCB + HCB

59.3

MCC-1

0.48

BL-2

MCC

VCB

25

53.6

+

18

6.9

MCC-2

0.48

BL-3

MCC

VCB

25

53.1

+

18

6.8

PNL-1

0.208

FS-2

Panel

VCB + HBB

25

48.2

+

18

7.1

PNL-2

0.208

PNL-1

Panel

VCB

25

57.8

+

18

7.7

1

1
.8

.8

BL-3
GE MVT-9
Sensor = 800
Plug = 800
Cur
C
ur Set = 0.5 (400A)
LT Band = 1
Inst
Inst = 4 (3200A)

.6
.5
.4
.3
.2

.6
.5
.4

BL-1
18627A

BL-5
Cutler Hammer Series C
HFD
Frame = 225A (150AT)
Trip = 150

.04
.03

.3

C-6
1 - 400 kcmil CU

TX-2
1000 / 1288 kVA
INRUSH

.1
.08
.06
.05

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

BL-5
20574A

PANEL
.01
.5 .6

.8

1

2

3

4

5 6 7 8 9 10

.2

.1

BL-3
29249A

.02

PANEL

300

60
50
40

BL-3
GE AKR-30H
800/400

.48

8
6
5
4

400

BL-1
GE AKR-50
1600/1760

17.58

BL-1
GE MVT-Plus
Sensor = 1600
Plug = 1600
Cur
C
ur Set = 1.1 (1760A)
LT Band = 1
STPU = 2.5 (4400A)
ST Delay = Int
Int
ST Delay I²t = Out
Override = 50000A

10

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

.13

TX-2
1000 / 1288 kVA
6%

24

80
60
50
40
30

PANEL

5 6 7 8 9 10000
1000

600
500

400

R

3

800

0.15

600
500

R

2

TX-2
FLA

800

19

The 1960s were characterized by the international race for the moon, Vietnam
War, hippie movement, Cuban Missile
Crisis, and civil rights movement. The
release of the book Silent Spring by
Rachel Carson in 1963 marked the beginning of growing international environmental awareness and concern, and
antinuclear movements mobilized.
In Denmark, the 1960s were characterized by an economic upswing,
a healthy economy, and the growing
Danish welfare state. Oil was inexpensive, abundant, and easy to transport.
It required minimal initial investments,
and for these reasons, oil was the prioritized fuel. Living standards improved throughout society. Consumption grew, and carpooling flourished.
Industry transitioned to oil, and the oil
demand increased. In the early 1970s,
more than 90% of nationally consumed
fuels were imported from the Middle
East, and the Danish government prac-

1970s, the price of oil had increased
exponentially. The economy deteriorated, and unemployment soared. Shortterm government mediatory measures
comprised, for example, car-free Sundays. Throughout society, everybody
suffered from the effects of the energy

New & Enhanced in EasyPower 10.4

TIME IN SECONDS

The Global Energy
Crisis

ticed a noninterventionist and rather
relaxed approach to ensuring future
fuel supplies.
The oil crisis in the 1970s was a
shock and a wake-up call, and it highlighted the extreme energy import dependency of the country. By the late

TIME IN SECONDS

alternative. The Danish authorities asked
the Danish Association of Electricity
Plants to establish a wind power committee and applied for Marshall Plan
support in 1952 (the Marshall Plan was
an American aid program for Europe after World War II). The goal was further
research in wind power-related technologies. Nuclear power was seen by some as
a symbol of modernization and progress and as a viable energy alternative.
The Danish research station for nuclear
power, Risø, was opened in 1958.
The Gedser turbine was erected in
1957. This wind turbine was based on
research by Johannes Juul, a student of
la Cour. However, wind power research
in Denmark was no longer recommended in 1962 because the price of
electricity from the Gedser turbine was
double the price of electricity generated from coal or oil. Juul opposed this
decision. He emphasized the benefits
of locally harvested energy resources
versus energy import dependency. He
also suggested that wind turbines could
become a future national export (see
Figures 4 and 5).

2

3

4

5 6 7 8 9 100

2

3

4

5 6 7 8 9 1000

CURRENT IN AMPERES X 100 AT 480 VOLTS

2

3

4

.01
5 6 7 8 9 10000

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

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

4' - 0 "
6.0

0.48
3' - 6 "
1' - 0 "

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· Fast Results

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IEEE Power & Energy Magazine - May/June 2021

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - May/June 2021
