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10.
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Modification to the schematic of AC BG EMUs with BHEL traction equipment.
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May-1982
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11.
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Modification to the traction control feed on EMUs.
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30.11.1982
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12.
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Provision of metal oxide varistor (MOV) across auxiliary winding of AC input to aux. Rectifier bridge feeding compressor motor in BG AC EMUs
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30.09.1994
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13.
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Modification in head light circuit for DC-DC converter replacing head light stabiliser on AC EMUs.
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30.09.1994
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14.
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Modified circuit for protection of PFD resistance in BG AC EMUs.
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30.09.1994
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15.
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Modification of M/s Everest make EMU battery charger.
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30.09.1994
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16.
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Increase in out put voltage setting of Everest make EMU battery charger.
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30.09.1994
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17.
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Modification to the mounting arrangement of condenser bushing for 25 kV AC EMUs.
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30.09.1994
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18.
|
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Provision of additional parmali wood cleats to support LT bus bar of BHEL built BG AC EMUs.
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30.09.1994
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19.
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Replacement of existing rubber stopper supporting panto pan to new position under the upper articulation to tube.
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30.09.1994
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20.
|
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Relocation of existing rubber stopper supporting panto pan to new position under the upper articulation to tube.
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30.09.1994
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21.
|
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Provision of new slotted bar with increased threaded length to arrest extension of pantograph beyond 2 meter height.
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21.05.1986
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22.
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Provision of panto raising spring catcher to h old the spring in case of breakage.
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21.05.1986
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23.
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Provision of rubber bush inside the open end of longitudinal tube of AM 12 type pantograph.
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19.09.1998
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24.
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Modification support bracket for DJ control cable.
|
Aug. 1977
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|
25.
|
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Modification to servomotor sleeve of AB type 301205
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Jan 1980
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26.
|
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Modification to stay bolts of circuit breaker type 301205
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Jan 1980
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27.
|
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Provision of series resistance with MTDJ coil of DJ type 301205
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Dec. 1980
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28.
|
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Modification to CMP formation in spring loaded sleeve of ABB.
|
Nov. 1982
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29.
|
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Provision of series resistance with MTDJ coil of DJ type 301205
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Mar. 1998
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30.
|
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Replacement of incoming steel braided flexible pipe by flexible reinforced rubber pipe connecting to VCB/ABB.
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10.03.1998
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31.
|
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Replacement of existing latch type of fixing arrangement with bolted design of cradle cover of VCB type 20 CB.
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22.05.1998
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32.
|
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Replacement of existing push button switch for light and fan contactor with higher rating push button switches on BG AC EMUs and MEMUs.
|
2001
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33.
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Provision of additional flasher light switch to driver’s side switch panel in the driving cab AC & DC EMU and MEMUs
|
2001
|
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34.
|
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Provision of traction motor weak field arrangement in MEMUs.
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06.06.2002
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35.
|
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Provision of hood arrangement for Switzer make air flow relay on AC BG EMU and MEMU.
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11.06.2002
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36.
|
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Provision of hood over the horn in all DC and AC EMUs and MEMUs
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14.06.2002
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37.
|
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Paralleling of N/O interlock of limit switch of BL key board in AC EMUs and MEMUs
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14.06.2002
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38.
|
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Provision of unit fault indication lamp in all AC EMUs and MEMUs motor coaches.
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14.06.2002
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39.
|
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Provision of flexible shunt in over load relay.
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14.06.2002
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40.
|
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Modification of guard supply indication lamp in AC EMUs and MEMUs
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41.
|
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Reliability improvement of driver indication panel in DC and AC EMUs and MEMUs.
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17.06.2002
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42.
|
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Reliability improvement of gang type signal bell in DC and AC EMUs and MEMUs.
|
17.06.2002
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43.
|
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Cooling of battery charger.
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17.06.2002
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44.
|
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Modification of cab fan circuit in AC EMUs and MEMUs.
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05.09.2002
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45.
|
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Shifting of main compressor suction filter.
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16.09.2002
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46.
|
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Burning/overheating of transition resistor (RTC)
|
03.06.2003
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|
47.
|
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Modification of LTR circuit in AC EMU and MEMUs
|
04.06.2003
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48.
|
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Modification of interchanging the position of inter cooler unit and compressor motor unit of M/s Elgi in BG AC EMU/MEMU.
|
18.06.2003
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49.
|
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Improvement in ventilation in AC EMU coaches.
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24.06.2003
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50.
|
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Modification to rubbing of jumper cables with vestibule of adjoining trailer coach in middle motor coaches of MEMUs.
|
27.05.2004
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51.
|
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Provision of T-strainers with sintered bronze filter in pneumatic pipeline of EP contactors in AC EMUs and MEMUs.
|
14.06.2004
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52.
|
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Provision of Nomex sheet below two way connector of carriage fan.
|
18.11.2005
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|
53.
|
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Automatic switching ‘ON’ of flasher light in case of emergency situation.
|
20.03.2006
|
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54.
|
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Interlocking between motor man and guard for starting of EMU train.
|
08.01.2010
|
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55.
|
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Modification in internal circuit of simplified battery charger of AC EMU/MEMU motor coach
|
18.11.2011
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