Crystal Reports - Arc-Flash Look-Up Table

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ETAP software calculation example for Arch flash analysis

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Content

ETAP

Page:

1

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Arc-Flash Look-Up Table IEEE 1584 Standard

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus1

Bus2

Arc Duration

Flash Protection
Boundary (ft)

18

30

36

48

2.90

1.86

1.29

0.72

5.80

3.71

2.58

1.45

41.24

23.20

14.85

10.31

5.80

10.8

61.86

34.80

22.27

15.46

8.70

12.5

82.48

46.39

29.69

20.62

11.60

5.00

13.9

103.10

57.99

37.12

25.77

14.50

6.00

15.3

123.72

69.59

44.54

30.93

17.40

0.133

8.00

17.6

164.96

92.79

59.39

41.24

23.20

0.167

10.00

19.7

206.20

115.99

74.23

51.55

29.00

0.333

20.00

27.9

412.40

231.97

148.46

103.10

57.99

0.500

30.00

34.1

618.60

347.96

222.69

154.65

86.99

0.667

40.00

39.4

824.79

463.95

296.93

206.20

115.99

0.833

50.00

44.0

1030.99

579.93

371.16

257.75

144.98

1.000

60.00

48.3

1237.19

695.92

445.39

309.30

173.98

1.167

70.00

52.1

1443.39

811.91

519.62

360.85

202.98

1.333

80.00

55.7

1649.59

927.89

593.85

412.40

231.97

1.500

90.00

59.1

1855.79

1043.88

668.08

463.95

260.97

1.667

100.00

62.3

2061.98

1159.87

742.31

515.50

289.97

1.833

110.00

65.3

2268.18

1275.85

816.55

567.05

318.96

2.000

120.00

68.2

2474.38

1391.84

890.78

618.60

347.96

0.004

0.25

3.3

5.94

3.34

2.14

1.49

0.84

kV

Isc (kA)

Grounding

Seconds

34.500

14.636

Grounded

0.004

0.25

3.1

5.15

0.008

0.50

4.4

10.31

0.033

2.00

8.8

0.050

3.00

0.067

4.00

0.083
0.100

34.500

16.866

Grounded

Arc in Cubic Box

Distance from Arc Electrodes (inches)

Cycles

24

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

ETAP

Page:

2

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus2

Bus6

Arc Duration

Flash Protection
Boundary (ft)

18

24

36

48

4.28

2.97

1.67

17.11

11.88

6.68

25.66

17.82

10.02

53.46

34.22

23.76

13.37

66.83

42.77

29.70

16.71

142.57

80.20

51.33

35.64

20.05

190.09

106.93

68.43

47.52

26.73

21.1

237.62

133.66

85.54

59.40

33.41

29.9

475.23

267.32

171.08

118.81

66.83

30.00

36.6

712.85

400.98

256.63

178.21

100.24

0.667

40.00

42.3

950.47

534.64

342.17

237.62

133.66

0.833

50.00

47.3

1188.09

668.30

427.71

297.02

167.07

1.000

60.00

51.8

1425.70

801.96

513.25

356.43

200.49

1.167

70.00

55.9

1663.32

935.62

598.80

415.83

233.90

1.333

80.00

59.8

1900.94

1069.28

684.34

475.23

267.32

1.500

90.00

63.4

2138.56

1202.94

769.88

534.64

300.73

1.667

100.00

66.9

2376.17

1336.60

855.42

594.04

334.15

1.833

110.00

70.1

2613.79

1470.26

940.96

653.45

367.56

2.000

120.00

73.3

2851.41

1603.92 1026.51

712.85

400.98

0.004

0.25

3.1

5.15

1.29

0.72

0.008

0.50

4.4

10.31

5.80

3.71

2.58

1.45

0.033

2.00

8.8

41.24

23.20

14.85

10.31

5.80

0.050

3.00

10.8

61.86

34.80

22.27

15.46

8.70

0.067

4.00

12.5

82.48

46.39

29.69

20.62

11.60

0.083

5.00

13.9

103.10

57.99

37.12

25.77

14.50

kV

Isc (kA)

Grounding

Seconds

34.500

16.866

Grounded

0.008

0.50

4.7

11.88

6.68

0.033

2.00

9.5

47.52

26.73

0.050

3.00

11.6

71.29

40.10

0.067

4.00

13.4

95.05

0.083

5.00

15.0

118.81

0.100

6.00

16.4

0.133

8.00

18.9

0.167

10.00

0.333

20.00

0.500

34.500

14.636

Grounded

Arc in Cubic Box

Distance from Arc Electrodes (inches)

Cycles

2.90

30

1.86

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

ETAP

Page:

3

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus6

Bus7

Arc Duration

Flash Protection
Boundary (ft)

18

30

36

48

69.59

44.54

30.93

17.40

92.79

59.39

41.24

23.20

206.20

115.99

74.23

51.55

29.00

27.9

412.40

231.97

148.46

103.10

57.99

34.1

618.60

347.96

222.69

154.65

86.99

39.4

824.79

463.95

296.93

206.20

115.99

44.0

1030.99

579.93

371.16

257.75

144.98

60.00

48.3

1237.19

695.92

445.39

309.30

173.98

70.00

52.1

1443.39

811.91

519.62

360.85

202.98

80.00

55.7

1649.59

927.89

593.85

412.40

231.97

1.500

90.00

59.1

1855.79

1043.88

668.08

463.95

260.97

1.667

100.00

62.3

2061.98

1159.87

742.31

515.50

289.97

1.833

110.00

65.3

2268.18

1275.85

816.55

567.05

318.96

2.000

120.00

68.2

2474.38

1391.84

890.78

618.60

347.96

0.004

0.25

0.4

0.07

0.04

0.03

0.02

0.01

0.008

0.50

0.5

0.15

0.08

0.05

0.04

0.033

2.00

1.0

0.58

0.33

0.21

0.15

0.050

3.00

1.3

0.87

0.49

0.31

0.067

4.00

1.5

1.16

0.65

0.42

0.083

5.00

1.6

1.45

0.82

0.100

6.00

1.8

1.74

0.133

8.00

2.1

2.32

0.167

10.00

2.3

0.333

20.00

3.3

0.500

30.00

4.0

kV

Isc (kA)

Grounding

Seconds

34.500

14.636

Grounded

0.100

6.00

15.3

123.72

0.133

8.00

17.6

164.96

0.167

10.00

19.7

0.333

20.00

0.500

30.00

0.667

40.00

0.833

50.00

1.000
1.167
1.333

4.160

10.378

Grounded

Arc in Cubic Box

Distance from Arc Electrodes (inches)

Cycles

24

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

0.1

0.09

0.07

0.06

0.05

0.04

0.02

0.2

0.19

0.14

0.11

0.09

0.07

0.08

0.9

0.74

0.56

0.45

0.38

0.29

0.22

0.12

1.4

1.12

0.84

0.68

0.57

0.43

0.29

0.16

1.9

1.49

1.13

0.91

0.76

0.57

0.52

0.36

0.20

2.4

1.86

1.41

1.13

0.95

0.72

0.98

0.63

0.44

0.24

2.8

2.23

1.69

1.36

1.14

0.86

1.31

0.84

0.58

0.33

3.8

2.98

2.25

1.81

1.52

1.15

2.90

1.63

1.04

0.73

0.41

4.8

3.72

2.82

2.27

1.90

1.43

5.80

3.27

2.09

1.45

0.82

9.8

7.45

5.63

4.53

3.79

2.87

8.71

4.90

3.13

2.18

1.22

14.9

11.17

8.45

6.80

5.69

4.30

ETAP

Page:

4

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus7

Bus8

Arc Duration

Flash Protection
Boundary (ft)

18

30

36

48

6.53

4.18

2.90

1.63

8.16

5.22

3.63

2.04

17.41

9.80

6.27

4.35

6.2

20.32

11.43

7.31

6.6

23.22

13.06

8.36

90.00

7.0

26.12

14.69

100.00

7.4

29.02

16.33

110.00

7.7

31.93

17.96

120.00

8.1

34.83

19.59

0.004

0.25

0.4

0.07

0.008

0.50

0.5

0.033

2.00

1.0

0.050

3.00

0.067

4.00

0.083

kV

Isc (kA)

Grounding

Seconds

Cycles

4.160

10.378

Grounded

0.667

40.00

4.7

11.61

0.833

50.00

5.2

14.51

1.000

60.00

5.7

1.167

70.00

1.333

80.00

1.500
1.667
1.833
2.000
4.160

10.378

Grounded

Arc in Cubic Box

Distance from Arc Electrodes (inches)
24

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

20.0

14.90

25.1

18.62

11.26

9.06

7.59

5.74

14.08

11.33

9.49

2.45

30.3

7.17

22.35

16.89

13.59

11.38

8.60

5.08

2.86

5.80

3.27

35.5

26.07

19.71

15.86

13.28

10.04

40.7

29.79

22.52

18.13

15.18

11.47

9.40

6.53

10.45

7.26

3.67

45.9

33.52

25.34

20.39

17.08

12.91

4.08

51.2

37.24

28.15

22.66

18.97

14.34

11.49
12.54

7.98

4.49

56.5

40.97

30.97

24.92

20.87

15.78

8.71

4.90

61.8

44.69

33.78

27.19

22.77

0.04

17.21

0.03

0.02

0.01

0.1

0.09

0.07

0.06

0.05

0.04

0.15
0.58

0.08

0.05

0.04

0.02

0.2

0.19

0.14

0.11

0.09

0.07

0.33

0.21

0.15

0.08

0.9

0.74

0.56

0.45

0.38

0.29

1.3
1.5

0.87

0.49

0.31

0.22

0.12

1.4

1.12

0.84

0.68

0.57

0.43

1.16

0.65

0.42

0.29

0.16

1.9

1.49

1.13

0.91

0.76

5.00

0.57

1.6

1.45

0.82

0.52

0.36

0.20

2.4

1.86

1.41

1.13

0.95

0.72

0.100
0.133

6.00

1.8

1.74

0.98

0.63

0.44

0.24

2.8

2.23

1.69

1.36

1.14

0.86

8.00

2.1

2.32

1.31

0.84

0.58

0.33

3.8

2.98

2.25

1.81

1.52

1.15

0.167

10.00

2.3

2.90

1.63

1.04

0.73

0.41

4.8

3.72

2.82

2.27

1.90

1.43

0.333

20.00

3.3

5.80

3.27

2.09

1.45

0.82

9.8

7.45

5.63

4.53

3.79

2.87

0.500

30.00

4.0

8.71

4.90

3.13

2.18

1.22

14.9

11.17

8.45

6.80

5.69

4.30

0.667

40.00

4.7

11.61

6.53

4.18

2.90

1.63

20.0

14.90

11.26

9.06

7.59

5.74

0.833

50.00

5.2

14.51

8.16

5.22

3.63

2.04

25.1

18.62

14.08

11.33

9.49

7.17

1.000

60.00

5.7

17.41

9.80

6.27

4.35

2.45

30.3

22.35

16.89

13.59

11.38

8.60

1.167

70.00

6.2

20.32

11.43

7.31

5.08

2.86

35.5

26.07

19.71

15.86

13.28

10.04

1.333

80.00

6.6

23.22

13.06

8.36

5.80

3.27

40.7

29.79

22.52

18.13

15.18

11.47

ETAP

Page:

5

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus8

Bus11

Bus15

Arc Duration

Flash Protection
Boundary (ft)

18

30

36

48

14.69

9.40

6.53

3.67

16.33

10.45

7.26

4.08

31.93

17.96

11.49

7.98

8.1

34.83

19.59

12.54

0.2

0.02

0.01

0.01

0.50

0.3

0.05

0.03

2.00

0.6

0.20

0.11

0.050

3.00

0.7

0.29

0.067

4.00

0.9

0.39

0.083

5.00

1.0

0.100

6.00

0.133

8.00

0.167
0.333

kV

Isc (kA)

Grounding

Seconds

4.160

10.378

Grounded

1.500

90.00

7.0

26.12

1.667

100.00

7.4

29.02

1.833

110.00

7.7

2.000

120.00

0.004

0.25

0.008
0.033

4.160

0.480

4.632

34.207

Grounded

Grounded

Arc in Cubic Box

Distance from Arc Electrodes (inches)

Cycles

24

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

45.9

33.52

25.34

20.39

17.08

12.91

51.2

37.24

28.15

22.66

18.97

14.34

4.49

56.5

40.97

30.97

24.92

20.87

15.78

8.71

4.90

61.8

44.69

33.78

27.19

22.77

17.21

0.01

0.00

0.3

0.04

0.02

0.02

0.01

0.01

0.02

0.01

0.01

0.4

0.08

0.05

0.03

0.02

0.01

0.07

0.05

0.03

0.8

0.34

0.19

0.12

0.08

0.05

0.17

0.11

0.07

0.04

1.0

0.51

0.29

0.18

0.13

0.07

0.22

0.14

0.10

0.06

1.1

0.68

0.38

0.24

0.17

0.10

0.49

0.28

0.18

0.12

0.07

1.3

0.85

0.48

0.31

0.21

0.12

1.1

0.59

0.33

0.21

0.15

0.08

1.4

1.02

0.57

0.37

0.25

0.14

1.2

0.79

0.44

0.28

0.20

0.11

1.6

1.36

0.76

0.49

0.34

0.19

10.00

1.4

0.98

0.55

0.35

0.25

0.14

1.8

1.70

0.95

0.61

0.42

0.24

20.00

1.9

1.97

1.11

0.71

0.49

0.28

2.5

3.39

1.91

1.22

0.85

0.48

0.500

30.00

2.4

2.95

1.66

1.06

0.74

0.41

3.1

5.09

2.86

1.83

1.27

0.72

0.667

40.00

2.7

3.93

2.21

1.42

0.98

0.55

3.6

6.79

3.82

2.44

1.70

0.95

0.833

50.00

3.0

4.92

2.76

1.77

1.23

0.69

4.0

8.48

4.77

3.05

2.12

1.19

1.000

60.00

3.3

5.90

3.32

2.12

1.47

0.83

4.4

10.18

5.73

3.66

2.55

1.43

1.167

70.00

3.6

6.88

3.87

2.48

1.72

0.97

4.7

11.88

6.68

4.28

2.97

1.67

1.333

80.00

3.8

7.86

4.42

2.83

1.97

1.11

5.0

13.57

7.64

4.89

3.39

1.91

1.500

90.00

4.1

8.85

4.98

3.19

2.21

1.24

5.3

15.27

8.59

5.50

3.82

2.15

1.667

100.00

4.3

9.83

5.53

3.54

2.46

1.38

5.6

16.97

9.54

6.11

4.24

2.39

1.833

110.00

4.5

10.81

6.08

3.89

2.70

1.52

5.9

18.66

10.50

6.72

4.67

2.62

2.000

120.00

4.7

11.80

6.64

4.25

2.95

1.66

6.2

20.36

11.45

7.33

5.09

2.86

0.004

0.25

0.6

0.17

0.09

0.06

0.04

0.02

0.8

0.33

0.19

0.12

0.08

0.05

ETAP

Page:

6

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus15

Bus17

Arc Duration

kV

Isc (kA)

Grounding

0.480

34.207

Grounded

4.160

10.378

Grounded

Seconds

Cycles

Flash Protection
Boundary (ft)

Arc in Cubic Box

Distance from Arc Electrodes (inches)
18

24

30

36

48

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

0.008

0.50

0.8

0.34

0.19

0.12

0.08

0.05

1.1

0.66

0.37

0.24

0.17

0.09

0.033

2.00

1.6

1.34

0.75

0.48

0.34

0.19

2.2

2.66

1.50

0.96

0.66

0.37

0.050

3.00

1.9

2.01

1.13

0.72

0.50

0.28

2.7

3.99

2.24

1.44

1.00

0.56

0.067

4.00

2.2

2.68

1.51

0.96

0.67

0.38

3.2

5.32

2.99

1.91

1.33

0.75

0.083

5.00

2.5

3.35

1.88

1.21

0.84

0.47

3.5

6.65

3.74

2.39

1.66

0.93

0.100

6.00

2.7

4.02

2.26

1.45

1.01

0.57

3.9

7.98

4.49

2.87

1.99

1.12

0.133

8.00

3.2

5.36

3.02

1.93

1.34

0.75

4.5

10.63

5.98

3.83

2.66

1.50

0.167

10.00

3.5

6.70

3.77

2.41

1.68

0.94

5.0

13.29

7.48

4.79

3.32

1.87

0.333

20.00

5.0

13.40

7.54

4.82

3.35

1.88

7.1

26.59

14.95

9.57

6.65

3.74

0.500

30.00

6.1

20.10

11.31

7.24

5.03

2.83

8.6

39.88

22.43

14.36

9.97

5.61

0.667

40.00

7.1

26.80

15.08

9.65

6.70

3.77

10.0

53.17

29.91

19.14

13.29

7.48

0.833

50.00

7.9

33.50

18.84

12.06

8.38

4.71

11.2

66.47

37.39

23.93

16.62

9.35

1.000

60.00

8.7

40.20

22.61

14.47

10.05

5.65

12.2

79.76

44.86

28.71

19.94

11.22

1.167

70.00

9.4

46.90

26.38

16.88

11.73

6.60

13.2

93.05

52.34

33.50

23.26

13.09

1.333

80.00

10.0

53.60

30.15

19.30

13.40

7.54

14.1

106.34

59.82

38.28

26.59

14.95

1.500

90.00

10.6

60.30

33.92

21.71

15.08

8.48

15.0

119.64

67.30

43.07

29.91

16.82

1.667

100.00

11.2

67.00

37.69

24.12

16.75

9.42

15.8

132.93

74.77

47.86

33.23

18.69

1.833

110.00

11.8

73.70

41.46

26.53

18.43

10.36

16.6

146.22

82.25

52.64

36.56

20.56

2.000

120.00

12.3

80.40

45.23

28.94

20.10

11.31

17.3

159.52

89.73

57.43

39.88

22.43

0.004

0.25

0.3

0.06

0.03

0.02

0.01

0.01

0.4

0.10

0.06

0.04

0.02

0.01

0.008

0.50

0.5

0.12

0.07

0.04

0.03

0.02

0.6

0.20

0.11

0.07

0.05

0.03

0.033

2.00

0.9

0.46

0.26

0.17

0.12

0.07

1.2

0.80

0.45

0.29

0.20

0.11

0.050

3.00

1.1

0.69

0.39

0.25

0.17

0.10

1.5

1.20

0.67

0.43

0.30

0.17

0.067

4.00

1.3

0.93

0.52

0.33

0.23

0.13

1.7

1.60

0.90

0.58

0.40

0.22

0.083

5.00

1.5

1.16

0.65

0.42

0.29

0.16

1.9

2.00

1.12

0.72

0.50

0.28

ETAP

Page:

7

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus17

Bus20

Arc Duration

kV

Isc (kA)

Grounding

4.160

10.378

Grounded

0.480

8.575

Grounded

Seconds

Cycles

Flash Protection
Boundary (ft)

Arc in Cubic Box

Distance from Arc Electrodes (inches)
18

24

30

36

48

Flash Protection
Boundary (ft)

Distance from Arc Electrodes (inches)
18

24

30

36

48

0.100

6.00

1.6

1.39

0.78

0.50

0.35

0.20

2.1

2.40

1.35

0.86

0.60

0.34

0.133

8.00

1.9

1.85

1.04

0.67

0.46

0.26

2.4

3.20

1.80

1.15

0.80

0.45

0.167

10.00

2.1

2.32

1.30

0.83

0.58

0.33

2.7

4.00

2.25

1.44

1.00

0.56

0.333

20.00

2.9

4.63

2.61

1.67

1.16

0.65

3.9

8.00

4.50

2.88

2.00

1.12

0.500

30.00

3.6

6.95

3.91

2.50

1.74

0.98

4.7

11.99

6.75

4.32

3.00

1.69

0.667

40.00

4.2

9.27

5.21

3.34

2.32

1.30

5.5

15.99

9.00

5.76

4.00

2.25

0.833

50.00

4.7

11.58

6.52

4.17

2.90

1.63

6.1

19.99

11.24

7.20

5.00

2.81

1.000

60.00

5.1

13.90

7.82

5.00

3.47

1.95

6.7

23.99

13.49

8.64

6.00

3.37

1.167

70.00

5.5

16.22

9.12

5.84

4.05

2.28

7.2

27.99

15.74

10.08

7.00

3.94

1.333

80.00

5.9

18.53

10.42

6.67

4.63

2.61

7.7

31.98

17.99

11.51

8.00

4.50

1.500

90.00

6.3

20.85

11.73

7.51

5.21

2.93

8.2

35.98

20.24

12.95

9.00

5.06

1.667

100.00

6.6

23.17

13.03

8.34

5.79

3.26

8.7

39.98

22.49

14.39

10.00

5.62

1.833

110.00

6.9

25.48

14.33

9.17

6.37

3.58

9.1

43.98

24.74

15.83

10.99

6.18

2.000

120.00

7.2

27.80

15.64

10.01

6.95

3.91

9.5

47.98

26.99

17.27

11.99

6.75

0.004

0.25

0.3

0.04

0.02

0.02

0.01

0.01

0.4

0.09

0.05

0.03

0.02

0.01

0.008

0.50

0.4

0.09

0.05

0.03

0.02

0.01

0.6

0.18

0.10

0.06

0.04

0.02

0.033

2.00

0.8

0.35

0.20

0.13

0.09

0.05

1.1

0.70

0.39

0.25

0.18

0.10

0.050

3.00

1.0

0.53

0.30

0.19

0.13

0.07

1.4

1.05

0.59

0.38

0.26

0.15

0.067

4.00

1.2

0.71

0.40

0.25

0.18

0.10

1.6

1.40

0.79

0.51

0.35

0.20

0.083

5.00

1.3

0.88

0.50

0.32

0.22

0.12

1.8

1.75

0.99

0.63

0.44

0.25

0.100

6.00

1.4

1.06

0.60

0.38

0.27

0.15

2.0

2.10

1.18

0.76

0.53

0.30

0.133

8.00

1.6

1.41

0.80

0.51

0.35

0.20

2.3

2.81

1.58

1.01

0.70

0.39

0.167

10.00

1.8

1.77

0.99

0.64

0.44

0.25

2.6

3.51

1.97

1.26

0.88

0.49

0.333

20.00

2.6

3.54

1.99

1.27

0.88

0.50

3.6

7.02

3.95

2.53

1.75

0.99

0.500

30.00

3.2

5.30

2.98

1.91

1.33

0.75

4.4

10.52

5.92

3.79

2.63

1.48

ETAP

Page:

8

Date:

09-30-2014

Contract:

SN:

85OTI30125

Engineer:

Revision: Base

Project:

5.0.3Z

Location:

Filename:

Study Case: SC

attl

Config.:

Normal

Incident Energy Exposure (Calorie/cm²)
Arc in Open Air
Bus
ID
Bus20

Arc Duration

Flash Protection
Boundary (ft)

Arc in Cubic Box

Distance from Arc Electrodes (inches)
18

36

48

3.98

2.55

1.77

0.99

5.1

4.97

3.18

2.21

1.24

5.7

10.61

5.97

3.82

2.65

1.49

4.8

12.38

6.96

4.46

3.09

5.1

14.15

7.96

5.09

3.54

90.00

5.5

15.91

8.95

5.73

100.00

5.8

17.68

9.95

6.37

110.00

6.0

19.45

10.94

120.00

6.3

21.22

11.94

Isc (kA)

Grounding

Seconds

Cycles

0.480

8.575

Grounded

0.667

40.00

3.6

7.07

0.833

50.00

4.1

8.84

1.000

60.00

4.5

1.167

70.00

1.333

80.00

1.500
1.667
1.833
2.000
*

Indicates bus votage is below the minimum allowable valued of 0.208 kV for the empirically derived model.

#

Indicates bolted fault current is out of the 0.7 kA-106 kA range allowable for the empirically derived model.

24

Flash Protection
Boundary (ft)

30

kV

Distance from Arc Electrodes (inches)
24

30

36

48

14.03

7.89

5.05

3.51

1.97

17.54

9.87

6.31

4.39

2.47

6.3

21.05

11.84

7.58

5.26

2.96

1.74

6.8

24.56

13.81

8.84

6.14

3.45

1.99

7.3

28.07

15.79

10.10

7.02

3.95

3.98

2.24

7.7

31.57

17.76

11.37

7.89

4.44

4.42

2.49

8.1

35.08

19.73

12.63

8.77

4.93

7.00

4.86

2.74

8.5

38.59

21.71

13.89

9.65

5.43

7.64

5.30

2.98

8.9

42.10

23.68

15.16

10.52

5.92

*# Indicates bus voltage is below the minimum allowable value of 0.208 kV and bolted fault current is out of the 0.7 kA-106 kA range allowable for empirically derived method.

18

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