TABLE OF CONTENTS Appendix F

(1)

Appendix F

Shuttle car trailing cables ...1

F.1 Load profile...1

F.1.1 Section 21 ...2

F.1.1.1 Morning shifts ...2

F.1.1.2 Afternoon shifts ...5

F.1.2 Section 61 ...8

F.1.2.1 Morning shifts ...8

F.1.2.2 Afternoon shifts ...11

F.2 Histogram ...15

F.2.1 Section 21 ...16

F.2.1.1 Morning shifts ...16

F.2.1.2 Afternoon shifts ...17

F.2.2 Section 61 ...18

F.2.2.1 Morning shifts ...18

F.2.2.2 Afternoon shifts ...19

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APPENDIX F

SHUTTLE CAR TRAILING CABLES

The total consumption of a Shuttle car was measured at the Gate end boxes of each

section, which supplies the Shuttle car with power. The present sustained capacity of

a Shuttle car’s trailing cable could thus be determined. Measurements were made on

the supply to a Shuttle car for a number of shifts as can be seen in Table F-1.

Table F-1: Measuring period for a CM at each section.

Shuttle cars are supplied with power from Gate end boxes with a 16 mm

2

trailing cable

that is generally 200 meters long. The cable is rolled on a drum and is rolled or

unrolled as the Shuttle car trams from one point to another. The drum can hold 12

turns on each layer and a maximum of six layers.

The cable is rated for a current of 105 A at an ambient temperature of 30 °C. The

derating factor for an ambient temperature of 25 °C is 1.1, which gives a current rating

of 115 A for the cable. The derating factor for one layer is 0.84, which gives current

rating of 97 A. For three layers it’s a derating factor of 0.45, which gives a current

rating of 52 A and for 5 layers the derating factor is 0.05 which gives a current of 6 A.

F.1 LOAD PROFILE

The next section focuses on the load profiles of the Shuttle cars. Each graph shows

the line voltage and the voltage limits, the load current and rated current capacity of

the cable. The morning shifts and afternoon shifts are separated as well as the

measurements made at the different sections.

17-May-2005 18-May-2005 19-May-2005 23-May-2005 24-May-2005 25-May-2005

Section 21 Morning shift

X

-

-tonnes/CM/shift

858 1320

1716

1320

1650

1749

Afternoon shift

X

-

-tonnes/CM/shift

2145

2112

2013

2310

1980

Section 61 Morning shift

-

X

tonnes/CM/shift

1740

2175

2233

1740

1450

2320

Afternoon shift

-

X

tonnes/CM/shift

1682

2552

2320

2030

2320

1160

(3)

F.1.1 SECTION 21

F.1.1.1 Morning shifts

Table F-2: Reasons for breakdowns and absent data.

Figure F.1-1: Load current and voltage for a SC – 17 May 2005.

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 1:30 2:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Cable rating (A) - 1 layer Cable rating (A) - 3 layers Cable rating (A) - 5 layers

Date

Time start Time stop

Reason for no data

17-May-2005

SOS

EOS

No current data - supply switch changed

because of repeated tripping.

18-May-2005

SOS

08:45

CM cable damaged and E-stop faulty.

11:46

14:38

SC trailing cable damaged.

19-May-2005

SOS

08:27

CM cable damaged.

09:44

12:10

SC trailing cable damaged - no spare.

12:10

12:20

SC's changes cables.

(4)

Figure F.1-2: Load current and voltage for a SC – 18 May 2005.

Figure F.1-3: Load current and voltage for a SC – 18 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Cable rating (A) - 1 layer Cable rating (A) - 3 layers Cable rating (A) - 5 layers 0 200 400 600 800 1000 1200 11:00 11:05 11:10 11:15 11:20 11:25 11:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(5)

Figure F.1-4: Load current and voltage for a SC – 19 May 2005.

Figure F.1-5: Load current and voltage for a SC – 19 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(6)

F.1.1.2 Afternoon shifts

Table F-3: Reasons for breakdowns and absent data.

Figure F.1-6: Load current and voltage for a SC – 17 May 2005.

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Date

Time start Time stop

Reason for no data

17-May-2005

SOS

EOS

No current data - supply switch changed

because of repeated tripping.

23:14

EOS

No voltage data - recorder stopped recording.

18-May-2005

23:00

EOS

SC trailing cable damaged - no spare.

22:34

EOS

No voltage data - recorder stopped recording.

22:53

EOS

No current data - recorder stopped recording.

19-May-2005

22:20

EOS

SC steering jack broken.

22:20

EOS

No current data - recorder stopped recording.

22:44

EOS

No voltage data - recorder stopped recording.

(7)

Figure F.1-7: Load current and voltage for a SC – 18 May 2005.

Figure F.1-8: Load current and voltage for a SC – 18 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(8)

Figure F.1-9: Load current and voltage for a SC – 19 May 2005.

Figure F.1-10: Load current and voltage for a SC – 19 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(9)

F.1.2 SECTION 61

F.1.2.1 Morning shifts

Table F-4: Reasons for breakdowns and absent data.

Figure F.1-11: Load current and voltage for a SC – 23 May 2005.

Date

Time start Time stop

Reason for no data

23-May-2005

09:10

EOS

SC trailing cable damaged - no spare.

24-May-2005

07:10

09:10

GEB - Earth fault.

09:10

10:50

No service water.

25-May-2005

14:45

EOS

Conveyor belt torn - 15 m.

0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(10)

Figure F.1-12: Load current and voltage for a SC – 23 May 2005

(30 minute period).

Figure F.1-13: Load current and voltage for a SC – 24 May 2005.

0 200 400 600 800 1000 1200 8:00 8:05 8:10 8:15 8:20 8:25 8:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Cable rating (A) - 1 layer Cable rating (A) - 3 layers Cable rating (A) - 5 layers 0 200 400 600 800 1000 1200 6:30 7:30 8:30 9:30 10:30 11:30 12:30 13:30 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(11)

Figure F.1-14: Load current and voltage for a SC – 24 May 2005

(30 minute period).

Figure F.1-15: Load current and voltage for a SC – 25 May 2005.

0 200 400 600 800 1000 1200 12:00 12:05 12:10 12:15 12:20 12:25 12:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(12)

Figure F.1-16: Load current and voltage for a SC – 25 May 2005

(30 minute period).

F.1.2.2 Afternoon shifts

Table F-5: Reasons for breakdowns and absent data.

Date

Time start Time stop

Reason for no data

23-May-2005

SOS

19:18

SC trailing cable damaged - no spare.

19:18

EOS

Supply switch changed - switch measured,

not being used.

23:04

EOS

No voltage data - recorder stopped recording.

24-May-2005

22:05

EOS

No current data - recorder stopped recording.

23:30

EOS

No voltage data - recorder stopped recording.

25-May-2005

19:20

20:45

Conveyor belt torn - 15 m.

21:10

EOS

Conveyor belt torn - 50 m.

21:08

EOS

No current data - recorder stopped recording.

22:59

EOS

No voltage data - recorder stopped recording.

0 200 400 600 800 1000 1200 14:00 14:05 14:10 14:15 14:20 14:25 14:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(13)

Figure F.1-17: Load current and voltage for a SC – 23 May 2005.

Figure F.1-18: Load current and voltage for a SC – 24 May 2005

0 200 400 600 800 1000 1200 15:30 16:30 17:30 18:30 19:30 20:30 21:30 22:30 23:30

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(14)

Figure F.1-19: Load current and voltage for a SC – 24 May 2005

(30 minute period).

Figure F.1-20: Load current and voltage for a SC – 25 May 2005.

0 200 400 600 800 1000 1200 21:30 21:35 21:40 21:45 21:50 21:55 22:00

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(15)

Figure F.1-21: Load current and voltage for a SC – 25 May 2005

(30 minute period).

0 200 400 600 800 1000 1200 18:30 18:35 18:40 18:45 18:50 18:55 19:00

Time (hh:mm)

Li

ne

V

ol

ta

ge

(V

)

0 20 40 60 80 100 120 140 160 180 200

C

ur

re

nt

(A

)

(16)

F.2 HISTOGRAM

The next section focuses on the frequency with which a Shuttle car consumed a

certain load current. The graphs show the number of times a certain current has been

consumed. The tables give data about the tonnes produced during the shift and the

percentage time of the shift that the motors were producing. The time that the cables

have been over loaded or loaded within rated capacity of the cables is given as a

percentage of the actual producing time. The morning shifts and afternoon shifts are

separated as well as the measurements made at the different sections.

(17)

F.2.1 SECTION 21

F.2.1.1 Morning shifts

Table F-6: Data for the total consumption of a SC in section 21.

Figure F.2-1: Histogram for current consumed by a SC.

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 0 5 ₁₀ ₁₅ ₂₀ ₂₅ ₃₀ ₃₅ ₄₀ ₄₅ ₅₀ ₅₅ ₆₀ ₆₅ ₇₀ ₇₅

Current bins (A)

Fr

eq

ue

nc

y

17-May-05 18-May-05 19-May-05 Overload - 3 layers

17-May-05 18-May-05 19-May-05

Tonnes/CM/Shift

858 1320

1716

% Time of shift producing

-

32.24%

36.69%

% of Production time over cable rating - 1 layer

-

0.34%

0.10%

% of Production time over cable rating - 3 layers

-

10.63%

6.15%

% of Production time over cable rating - 5 layers

-

100.00%

(18)

F.2.1.2 Afternoon shifts

Table F-7: Data for the total consumption of a SC in section 21.

Figure F.2-2: Histogram for current consumed by a SC.

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 0 5 ₁₀ ₁₅ ₂₀ ₂₅ ₃₀ ₃₅ ₄₀ ₄₅ ₅₀ ₅₅ ₆₀ ₆₅ ₇₀ ₇₅

Current bins (A)

Fr

eq

ue

nc

y

17-May-05 18-May-05 19-May-05

Tonnes/CM/Shift

2145

2112

2013

% Time of shift producing

-

88.18%

86.97%

% of Production time over cable rating - 1 layer

-

0.35%

0.17%

% of Production time over cable rating - 3 layers

-

12.94%

7.88%

% of Production time over cable rating - 5 layers

-

100.00%

(19)

F.2.2 SECTION 61

F.2.2.1 Morning shifts

Table F-8: Data for the total consumption of a SC in section 61.

Figure F.2-3: Histogram for current consumed by a SC.

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 0 5 ₁₀ ₁₅ ₂₀ ₂₅ ₃₀ ₃₅ ₄₀ ₄₅ ₅₀ ₅₅ ₆₀ ₆₅ ₇₀ ₇₅

Current bins (A)

Fr

eq

ue

nc

y

23-May-05 24-May-05 25-May-05

Tonnes/CM/Shift

1740

1450

2320

% Time of shift producing

24.14%

56.66%

82.98%

% of Production time over cable rating - 1 layer

0.00%

0.06%

% of Production time over cable rating - 3 layers

3.32%

2.22%

5.62%

% of Production time over cable rating - 5 layers

100.00%

(20)

F.2.2.2 Afternoon shifts

Table F-9: Data for the total consumption of a SC in section 61.

Figure F.2-4: Histogram for current consumed by a SC.

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 0 5 ₁₀ ₁₅ ₂₀ ₂₅ ₃₀ ₃₅ ₄₀ ₄₅ ₅₀ ₅₅ ₆₀ ₆₅ ₇₀ ₇₅