TABLE OF CONTENTS

TABLE OF CONTENTS

Appendix O Shuttle car Pump motor ...1

O.1 Load profile...2

O.1.1 Section 21 ...2

O.1.1.1 Morning shifts ...2

O.1.1.2 Afternoon shifts ...4

O.2 Histogram ...6

O.2.1 Section 50 ...7

O.2.1.1 Morning shifts ...7

O.2.1.2 Afternoon shifts ...9

O.3 Thermal capacity ...11

O.3.1 Section 21 ...11

O.3.1.1 Morning shifts ...11

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APPENDIX O

SHUTTLE CAR PUMP MOTOR

Typical nameplate data for the pump motor of a Roofbolter can be seen in Table O-1. The pump motor measured at both sections was a 30 kW induction motor with a full load current rating of 20 A.

Table O-1: Nameplate data of the pump motor on a SC.

Table O-2: Production figures for shifts that the pump motor was investigated.

Date Morning Afternoon Morning Afternoon

4-Jul-2005 - - 1800 2124 Sect 51 Sect 50 Power 15 kW Voltage 950 V Duty S1 Current 11.8 A Ins class F RPM 1460 pf 0.86

O.1 LOAD PROFILE

The next section focuses on the load profiles of the pump motor. Each graph shows the line voltage and the voltage limits, the load current and full load current capacity of the pump motor. The morning shifts and afternoon shifts are separated as well as the measurements made at the different sections.

O.1.1 SECTION 21

Figure O.1-1: Load current and voltage for a pump motor – 4 July 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 5 10 15 20 25 30 35 40 C ur re nt (A ) Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

3

Figure O.1-2: Load current and voltage for a pump motor – 4 July 2005 (30 minute period).

0 200 400 600 800 1000 1200 2:00 2:05 2:10 2:15 2:20 2:25 2:30 Time (hh:mm) Li ne V ol ta ge (V ) 0 5 10 15 20 25 30 35 40 C ur re nt (A ) Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

O.1.1.2 Afternoon shifts

Figure O.1-3: Load current and voltage for a pump motor – 4 July 2005.

0 200 400 600 800 1000 1200 3:30 4:30 5:30 6:30 7:30 8:30 9:30 10:30 11:30 Time (hh:mm) Li ne V ol ta ge (V ) 0 5 10 15 20 25 30 35 40 C ur re nt (A ) Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

5

Figure O.1-4: Load current and voltage for a pump motor – 4 July 2005 (30 minute period).

0 200 400 600 800 1000 1200 6:00 6:05 6:10 6:15 6:20 6:25 6:30 Time (hh:mm) Li ne V ol ta ge (V ) 0 5 10 15 20 25 30 35 40 C ur re nt (A ) Voltage (V) Voltage limit (upper) Voltage limit (lower) Current (A) Full load (A)

O.2 HISTOGRAM

The next section focuses on the frequency with which a Shuttle cars pump motor consumed a certain load power and current. The graphs show the number of times a certain power or 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 motors have been over loaded or loaded within the full load rating of the motor 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.

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O.2.1 SECTION 50

Table O-3: Data for the total consumption of a pump motor in section 50.

Figure O.2-1: Histogram for power consumed by a pump motor.

04-Jul-05

Tonnes/CM/Shift 1800

% Time of shift producing 87.69% % of Production time underloaded 99.97% % of Production time overloaded 0.03%

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 0 1 2 3 4 5 6 7 8 9 _{10 11 12 13 14 15} Power bins (kW) Fr eq ue nc y 4-Jul-05

Figure O.2-2: Histogram for current consumed by a pump motor. 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 0 1 2 3 4 5 6 7 8 9 _{10 11 12}

Current bins (A)

Fr eq ue nc y 04-Jul-05

9

O.2.1.2 Afternoon shifts

Table O-4: Data for the total consumption of a pump motor in section 50.

Figure O.2-3: Histogram for power consumed by a pump motor.

04-Jul-05

Tonnes/CM/Shift 2124

% Time of shift producing 89.64% % of Production time underloaded 100.00% % of Production time overloaded 0.00%

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 0 1 2 3 4 5 6 7 8 9 _{10 11 12 13 14 15} Power bins (kW) Fr eq ue nc y 4-Jul-05

Figure O.2-4: Histogram for current consumed by a pump motor. 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 0 1 2 3 4 5 6 7 8 9 _{10 11 12}

Current bins (A)

Fr eq ue nc y 04-Jul-05

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O.3 THERMAL CAPACITY

The next section focuses on the temperature of the windings of the pump motor. Each graph shows the temperature of the motor, the load current and rated full load current of the motor. The morning shifts and afternoon shifts are separated as well as the measurements made at the different sections. The thermal time constant is 30 minutes.

O.3.1 SECTION 21

Figure O.3-1: Load current and motor temperature for a pump motor – 4 July 2005. 0 10 20 30 40 50 60 6:30 7:30 8:30 9:30 10:30 11:30 12:30 1:30 2:30 Time (hh:mm) C ur re nt (A ) 0 10 20 30 40 50 60 70 80 90 100 Te m pe ra tu re (d eg C ) Current (A) Full load (A) Temp (deg C)

O.3.1.2 Afternoon shifts

Figure O.3-2: Load current and motor temperature for a pump motor – 4 July 2005. 0 10 20 30 40 50 60 3:30 4:30 5:30 6:30 7:30 8:30 9:30 10:30 11:30 Time (hh:mm) C ur re nt (A ) 0 10 20 30 40 50 60 70 80 90 100 Te m pe ra tu re (d eg C ) Current (A) Full load (A) Temp (deg C)