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Sr. No DATE
STOP
TIME
START
TIME
TOTAL
TIME
Equipmen
t Tag No
withDescriptio
n
1
2
3
4
5
6
7
89
10 .
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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Type of Tripping with reason and rectification
DAILY UPDTION FILE OF HT DRIVE MONTH: October-2013
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Effect of
production or Not
Name of
ShiftEngineer
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Sr. No DATE STOP TIME START TIME TOTAL TIME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
DAILY UPDTION
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Equipment Tag No with Description
FILE OF LT DRIVE
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MONTH: October2013
Type of Tripping with reason and rectification
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Effect of
Productio
n or Notfrom
Electrical
side
Name of
Shift
Engineer
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DE NDE
CH9 CH10
1 A VINOTH OFF OFF OFF OFF
2 B Pitamber OFF OFF OFF OFF
3 C Avinash OFF OFF OFF OFF
4 A
5 B
6 C
7 A
8 B
9 C
10 A
11 B
12 C
13 A
14 B
15 C
16 A
17 B
18 C
19 A
20 B21 C
22 A
23 B
24 C
25 A
26 B
27 C
28 A
29 B
30 C
31 A
32 B
33 C
34 A
35 B
36 C
37 A
38 B
39 C
11-Oct-13
12-Oct-13
13-Oct-13
1-Oct-13
2-Oct-13
Sr. No. DATE SHIFT NAME
BALL MILL 1
KW
BEARING RUNNING
CURRENT
10-Oct-13
9-Oct-13
3-Oct-13
4-Oct-13
5-Oct-13
6-Oct-13
7-Oct-13
8-Oct-13
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40 A
41 B
42 C
43 A
44 B
45 C
46 A47 B
48 C
49 A
50 B
51 C
52 A
53 B
54 C
55 A
56 B
57 C
58 A
59 B
60 C
61 A
62 B
63 C
64 A
65 B
66 C
67 A68 B
69 C
70 A
71 B
72 C
73 A
74 B
75 C
76 A
77 B
78 C
80 B
81 C
82 A
83 B
84 C
85 A
86 B
87 A
22-Oct-13
23-Oct-13
16-Oct-13
17-Oct-13
18-Oct-13
19-Oct-13
20-Oct-13
21-Oct-13
14-Oct-13
15-Oct-13
24-Oct-13
25-Oct-13
26-Oct-13
27-Sep-13
28-Sep-13
29-Sep-13
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88 B
89 C
90
30-Sep-13
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DE NDE DE NDE DE
CH9 CH10 CH9 CH10 CH9
OFF OFF OFF OFF 53 40 148 1471 55
OFF OFF OFF OFF 50 37 148 1488 47
OFF OFF OFF OFF 50 37 140 1437 48
CURRENT KW
BEARING
CURRENT
ROD MILL 1
BEARING RUNNING BEA
BALL MILL 2
RUNNING
KW
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NDE DE NDE DE NDE
92 CH9 CH10 CH9 CH10
42 48 390 OFF OFF OFF OFF 47 37
39 67 442 OFF OFF OFF OFF 39 35
39 40 378 OFF OFF OFF OFF 45 35
1
ING
ROD MILL 2
CURRENT KW
RUNNING
BLOWER 1 BLO
CURRENT KW
BEARING RUNNING BEARING
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DE NDE DE NDE
CH9 CH10 CH9 CH10
42 434 OFF OFF OFF OFF OFF OFF OFF
44 445 OFF OFF OFF OFF OFF OFF OFF
45 444 39 34 9 27 43 34 20
ER 3 SCH MOTOR
CURRENT KWCURRENT KW
RUNNING
PCH MOTOR
BEARING
CURRENT
BEARING RUNRUNNING
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DE NDE DE NDE
CH9 CH10 CH9 CH10
OFF OFF OFF OFF OFF OFF OFF OFF OFF
OFF OFF OFF OFF OFF OFF OFF OFF OFF
51 OFF OFF OFF OFF OFF OFF OFF OFF
BLOWER 2
RUNNING
CURRENT KW
BEARING
REGRIND MILL
KW KW
BEARING RUNNING
CURRENT
ING
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1 A VINOTH 44 44 42
2 B pitamber 46 44 44
3 C Avinash 42 40 42
4 A
5 B
6 C
7 A
8 B
9 C
10 A
11 B
12 C
13 A
14 B
15 C
16 A
17 B
18 C
19 A
20 B21 C
22 A
23 B
24 C
25 A
26 B
27 C
28 A
29 B
30 C
31 A
32 B
33 C
34 A
35 B
36 C
37 A
38 B
39 C
12-Oct-13
13-Oct-13
7-Oct-13
8-Oct-13
9-Oct-13
10-Oct-13
11-Oct-13
2-Oct-13
SHIFT NAMEDATE
Oil Temp
1-Oct-13
Oil Temp
Sr. No.
Power Transformer -
1
Power Tra
Winding
Temp
3-Oct-13
4-Oct-13
5-Oct-13
6-Oct-13
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40 A
41 B
42 C
43 A
44 B
45 C
46 A47 B
48 C
49 A
50 B
51 C
52 A
53 B
54 C
55 A
56 B
57 C
58 A
59 B
60 C
61 A
62 B
63 C
64 A
65 B
66 C
67 A68 B
69 C
70 A
71 B
72 C
73 A
74 B
75 C
76 A
77 B
78 C
79 A
80 B
81 C
82 A
83 B
84 c
85 A
86 B29-Oct-13
28-Oct-13
25-Oct-13
26-Oct-13
27-Oct-13
20-Oct-13
21-Oct-13
22-Oct-13
23-Oct-13
24-Oct-13
15-Oct-13
16-Oct-13
17-Oct-13
18-Oct-13
19-Oct-13
14-Oct-13
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87 C
88 a
89 b
c
30-Oct-13
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44 38 42 42 44 48 52 36 38
42 38 36 44 40 56 48 34 32
40 36 34 38 38 50 52 52 54
Oil TempWinding
Temp
Oil TempWinding
Temp
Dist. Transformer - 1 Dist.Transformer - 3
Oil Temp
Dist. Transformer - 2
Winding
Temp
Oil Temp
nsformer -
Winding
Temp
Winding
Temp
Dist. Transformer - 4
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38 38 36 38 36 38 38 38 42
38 36 40 38 38 36 40 38 44
40 38 36 34 38 38 40 38 40
Oil TempWinding
Temp
Dist.Transformer - 5
Winding
Temp
Oil Temp
4 MVA Tr
Oil Temp
Dist. Transformer - 8
Winding
Temp
Dist. Transformer - 6 Dist. Transformer - 7
Oil TempOil TempWinding
Temp
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44
42
40
nsformer
Winding
Temp
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18-8-12
19-8-12
22-8-12
29-8-12
6/9/2012
13-9-2012
2/10/2012
12/10/2012
3/11/2012
6/11/2012
13/11/12
23/11/2012
28-11-12
29-11-12
30-11-12
4/11/2012
26-12-12
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27-12-12
4/1/2013
5/1/2013
12/1/2013
13-1-13
20-1-13
21-1-13
24-1-13
31-1-2013
31-1-13, 1-2-13
1 & 2-2-2013
3/2/2013
4/2/2013
7,8,9,10-2-13,
11/2/2013
15-2-2013
21-2-2013
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23-2-13
24-2-2013
25-2-2013
6/3/2013
15-3-2013
31-3-2013
2,3-4-2013
4/4/2013
6/4/2013
9/4/2013
10/4/2013
16-4-2013
17-4-2013
17-4-2013
17-4-2013
17-4-2013
3/5/2013
10/5/2013
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11/5/2013
12/5/2013
13-5-13
14-May-13
17-5-13
18-5-13
19-5-13
20-5-13
27-5-2013
28-5-2013
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29-May-13
30-May-13
8-Jun-13
8-Jun-13
9-Jun-13
11-Jun-13
6/16/2013
24-Jun-13
27-Jun-13
3-Jul-13
4-Jul-13
13-Jul-13
18-Jul-13
20-Jul-13
21-Jul-13
24-Jul-13
4-Aug-13
28-Aug-13
18-Sep-13
23-Sep-13
18-Jun-13
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25-Sep-13
26-Sep-13
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Ball mill 1 LRS insulator support damaged. Flash over. Total 9 nos were defective and replaced by new insulators.
Ball mill 2 LRS insulator support damaged. Flash over. Total 9 nos were defective and replaced by new insulators.
Rod mill 1 LRS checked. Insulation value was less. All the six insulators were replaced with good one.
Ball mill 1, 2 water level in LRS was lowered by 30mm to increase the gap between the insulators and water
level. For this one no 10mm hole was drilled in LRS tank.
Ball mill 1 NDE side bearing NU 230 M was replaced as the old bearing was giving scratching sound. Grease
SCH motor NDE bearing replaced.6320 C3.
Motor fan replaced with the fabricated fan brought through Adarsh
5AG-01, 5AG-02 lead agitator motor non drive end bearings were replaced with 6209-2RS bearing.
Ohline shifting work completed near SKM gate through M/s Navdurga electrical jaipur
11KV/440V 1500KVA trafo 440V side cables were removed and connected to 11KV/6.6KV/440V transformer .
Raise borer M/c power supply given .
Main V.fan greasing done. With Temp Gun. Motor DE Cover= 68 deg C , Motor body= 77degC, NDE cover=
Masibus Scanner: Channel 1=36degC, 7= 110degC, 8=78degC.
Raise borer m/c connections removed from the back of the techno office room.
Power given to raise borer m/c at south ramp.
The 33KV no 1 feeder tripped at early morning 1AM. One no 33KV PT fuse blown out at the SKM incomer feeder.
The tripping was cause due to one cable bursting and eathing at the DSC side cable tray near yard. 33KV No 2 ckt
Raise borer m/c pump connections removed in the evening as the pilot hole drilling is over.
33KV no 2 feeder cable jointing done
33KV no 2 feeder line charged after cable jointing work.
Raise borer M/c is taking 490A @ the boring of 3.5 mtr dia .
Hydro fill plant 6.6KV trafo power supply energized on 6.0PM.
Important Breakdown list
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SCH was giving problem. 3 core cable was laid out from oil cooling panel to float switch so that relay R1 can be
energized directly. R2 elay is kept charged through permanent short ckt.
The mill was switched off in 4PM due to the union after the accident in lead plant.
33kv no1, no 2 circuits were taken in to ckt and 6.6KV no1, 2 feeders switched on and the bus coupler is kept off.
Ball mill 1 DE side grease cover opened. The cup was not in exact position. Grease is coming out. Ball mill 1
motor needs to be opened to rectify this fault. Fixed back as it is greasing done.
11KV/6.6KV/440V 1500KVA transformer was energized from 6.6kv mill side power. Power given from 6.6KV
Greasing done on Main V.fan 630KW
Ball mill no 1 drive end side grease which was lying inside motor approximately 7KG was removed.
Greasing done on V.fan
Capacitor reforming done in the spare inverter module
KTSelvan & Ravi went to Udaipur on official tour.
CVR ventilation fan started. It is taking 150A load.
Sh Sukhmayan was deputed for 33KV yard work at DSC
Ball mill 1 : NDE side bearing NU230E ( Fag) changed, DE side bearing NU236E( NSK japan make ) & 6320
changed.( Grease ring(oil ring in NDE side is AJ180 & this is damaged. ).
All the three new bearings are SKF make.Ravikant Baipai sent to Udaipur for grease seal.
U/G 11KV cable joint near hoist room opened, cable re-routed through cable trench and straight through jointing
made. 8AM to 4PM. Cable charged back.
Ball mill-1: Motor DE side oil seal 200*180*15 mm fixed with juggad fittings and trial taken.
Total Mill power was taken through 33KV ckt2 @ 10AM. 33kv CKT 1is in no load.
SCH crusher complete set replaced with new crusher, new oil cooling system, new overpressure fan.
Sukmayan was deputed to DSC 33KV yard work
DGMS electrical inspector visited SKM for inspection
KTselvan Went to (DGMS ) Udaipur for submitting HT file. File was rejected as it was not in stipulated New
VVIP visit took place at SKM.
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Compressor house power shutdown taken from 3.0PM to 6.30 PM for jointing the VCB panels.
High mast light work completed
Went to DGMS Udaipur office on personal taxi to submit the compr house substation application.
By train on 6-7-13 went to delhi. Came back on 8-3-13 by flight. V.fan motor inspection work.
Power to south ramp given from mill side through cable. 11KV/440V transformer switched off and 440V cable
connection removed from PCC side.
BC-3 magnet coil insulation failure at bottom. Removed , repaird and brought back on 6-4-2013 for fixing. It was
tested at Udaipur and found ok.
M/s Zitron visited the SKM for additional fan requirement study.
Went to Udaipur for magnet inspection @ Sakthi elect
Mine shaft supply given from mill via feeder ie no 14 & 38
Ball mill no 2 shaft sheared off near motor coupling.
The BC-3 Magnet was put in to operation. Working OK.
SCH motor (removed from use) DE side NU320 (SKF) bearing was changed with new bearing ( SKF). The bearingwas damaged due to low grease.
ABB engr Raj kumar was attending the problem of UMC 22 for the past 4 days. MOM signed today. There is a
small problem in the UMC 22 which needs to be resolved.
Setting for trafo 3, 4 HT feeders changed from 0.7, 1.0 to 0.7, 0.4( I>0.7, t>0.4). Setting for trafo 440V incomer in
all 1 to 8 no trafo changed to ( t> 0.65 from t>4.0)
V.fan setting for 1 no channel changed from 70 to 75 deg for tripping. No1 channel temp reading jumped from
V.fan AC indoor card damaged & sent to Udaipur. Now the AC is not working.
Hydro fill plant 30VDC battery charger batteries failed in B shift end. Battery ircuit opened and the system
started with 30VDC rectifier ckt without battery.
Trafo-5 was tripped due to high set over current while the CT changing work is going on. MCC 5 Both front and
Back side cleaned and checked.
Both Mill stopped at 5 pm due to water shortage.
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Both mill kept shut. PMCC2 complete blowering done on backside, front side . MCC5,6,7 complete blowering
done. PMCC2 side all Breakers removed and cleaned. MCC5,6,7,8 ACB cleaned and checked.
Both mill kept shut. MCC4 complete blowerng done. PMCC1 side front , back side complete blowering done.
PMCC1 side all ACB opened and cleaned and checked. MCC4 checked. MCC1,2,3 opened and cleaned and
checked. EMER MCCB ACB ( both ) not checked and cleaned.Both Mill started at 5 PM. Trafo 1,2,3,4,5,6 VCB Cleaned and checked.
DSC power tripped at 5PM. 33KV 1,2 power not available. 11KV power not available. CPP is down. Power is
through RSEB. Total load on mill 33KV feeder 2 is 2.3 MW.
33KV no 1 feeder PT fuse blown at SKM side.
Mill is off from 5PM.
Both mills started at 12:30 AM.
Shutdown taken from MRS for Incomer 1 (33KV) inorder to change the Line PT fuses ( R phase and Y phase).
Incomer - 1 and Trafo 1 back panel cleaning done. Incomer 1 GO switch in 33KV Switch yard maintenance
New reservoir pump started with VFD panel after cable laying work from hydro fill plant.( job went for a week).
850 mtr cable 95 sqmm laid out. 45kw motor taking 33A at full speed.
15kw submersible pump and starter fixed in the main reservoir sump and started.
PB& ZN floculant drawing traced and changed as in the panel.
MLDB 4 at PCH fixed with digital ELR.
On trafo 4, oil leakage was found. And in there LT side bushings of Y and B phases were found loose. So it was
630kw vfan motor received with duct assembly at SKM site.
Plant - Both the streams are stopped due to the fatal accident in Mines at 4:00AM
Plant didn't run for the whole day .
Power Readings:
33KV I/C 2 : 1.36MV
Mines Shaft 2 : 362 W
Surface VF : 320.2KW
Mines 300MRI : 172KW
Mines Fdr-4 : 51.5KW
TR-7 : 24.5KW
TR-6 : 132KW
TR-5 : 115.5KW
TR-4 : 2KW
TR-3 : 93KW
TR-2 : 165KW
TR-1 : 2.4KW
Shaft Fdr-1 : 67KW
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Hydrofill Plant : 60KW
Plant was Restarted at 10:30am after that incident.
4P-01C, motor windings burnt and DE side bearing was damaged. e/f was shown in vfd. New 180kw(287A) motor
was installed and ID run test was successful. Old motor details: Serial No: NAD2X 10507 TOP, Frame size:ND3152X New motor Details: Serial No: NAD2X 11876 TOP, Frame size: ND3152X. Old motor bearing -SKF
NU319C3, This bearing was completely dry, inner race cracked, oil seal burned, motor rotor rubbed at drive end
33kv black-out at 3pm from CPP. Entire plant was taken in load at 6:30 pm
BM-1 energy meter was replaced with spare motor feeder (panel no 2)
5AG-03G motor was replaced with newer one. Abnormal sound was noticed in motor.
Regrind Mill motor was tripped due to False alarm in Temperature scanner. Problem due to loose connection in
On rod mill-1 new 500kw motor was fixed. And no load trial was taken.
Report of no load trial KW = 24, CURRENT = 22A, WINDING TEMP = 33, DE SIDE = 33, NDE SIDE = 31 , KVA =
BC-2 tripper cable dressing done properly.Its clips got out from wire.It was fixed properly
Ball Mill-1 ( channel 5 in Scanner was showing "undr' .While checking from motor side it was found that 1 cable g
On mines shaft feeder-1 (feeder no 14) CT was changed by 400/1 A. Earlier it was 250/1 A.
Hydro fill plant Transformer (6.6KV/440V) - NGR to Earthis not proper. It was rectified and started. Transformer b
Feeder No 31 Charged by Mines Electrical for 212 mrl substation(mines). Micom 220 was found faulty andreplaced from spare feeder.Shutdown given.
11KV Overhead Line was tripped due to earth fault. It was checked from Mines side by Mr. Bhanu. No problem
was found. After that it was started again.
7P-02 (1.1KW/2.35A) motor was replaced. Old motor was having bearing problem.
33kV Incomer-1 shutdown was taken from MRS end. Incomer-1 & Transformer-1 breaker were turned OFF from
SKM side. Bus Coupler is Racked Out
Since new ventilation fan motor connection was to be done in Raise Borer M/C panel, P-22 in PMCC-2 so
Shutdown was taken for trafo-5. This ventilation fan motor was installed in Mines area. Also ELR+CBCT was
change in P-22, PMCC-2. After termination of Motor connection from feeder side its shutdown was cleared.
3BC-03 ventilation fan trial taken. Taking 8.6A. ( Rating:5.5KW/9.9A, MPCB Setting:9A). Motor is runnig fine.
Tripped from temp. scaner. While check it was found that its channel no-4 showing false reading. It was skiped
and started again. Channel no 4 need to be check in ROD mill shutdown.
5AG-03G (22KW/40A) has been changed with the spare one due to some abnormal sound in the motor. Load curr
Trafo-3 was tripped without any indication in SPAJ-140C Relay. It was started again and no further tripping occur
mcc 4 Tripped on Io>> fault. Fault has come from from ball mill 2 inching drive winding termination weak
insulation. Also loose bolts were also found inside that terminal box. Trial was taken for that motor after
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otor side RTD terminal.
t cut .It was joined again.
dy earthing also done.
ent 27A. Running fine now
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E PROBLEM.