GOVERMENT OF INDIA MINISTRY OF RAILWAYS · 5.2.1 Reverser (MPJ) Key : The reverser key (MPJ) should...

Page 1 of 20 Issued on Oct‟ 2011 Spec. No. RDSO/2011/EL/SPEC/0040 Rev. „1‟

lR;eso t;rs

GOVERMENT OF INDIA MINISTRY OF RAILWAYS

TECHNICAL SPECIFICATION

OF

STICK TYPE MASTER CONTROLLER

FOR

25 KV AC ELECTRIC LOCOMOTIVE

SPECIFICATION No. RDSO/2011/EL/SPEC/0040/ Rev. ‘1’

Issue Oct- 2011

Approved by Signature

Sr. EDSE

Prepared by Checked by Issued by

ELECTRICAL DIRECTORATE RESEARCH DESIGNS AND STANDARDS ORGANISATION

LUCKNOW-226011



Status of Revision S. N. Date of Revision Page No. Revision Reasons for Revision

1. - All 0 First Issue.

2. Oct 2011 All 1 Retro fitment issues & Comments &

suggestions by operating crew from

Railways

3.



Contents

S. No. Description Page no.

1. Forward 4

2. Scope 4

3. Service conditions 4

4. Governing specifications 5

5. General arrangement & construction 5

6. Mechanical interlocking between three handles 7

7. Mounting dimensions and space requirement 8

8. Wiring, connectors & cables 8

9. Materials and workmanship 9

10. Features 9

11. Tests 12

12. Coloring of frame assembly 15

13. Marking 16

14. Annexure-1 17

15. Annexure-2 18

16. Annexure-3 19



SPECIFICATION FOR STICK TYPE MASTER CONTROLLER FOR 25 KV AC LOCOMOTIVE

1.0 FORWARD: The master controller is human machine interface used by driver to drive the locomotive. The Master controller has to perform three basic functions i.e. Controlling the progression, regression and braking of locomotive.

This specification is intended to define the technical requirements of Stick type Master controller (STMC) to be used in existing and new tap changer locomotives and the interface requirements.

This revised specification supersedes the earlier technical specification No. ELRS/SPEC/MP/0040/Rev.0 (Dec 2005).

1.1 Stick Type Master Controller (STMC) shall be based on Modular Concept for Microprocessor type as well as Non Microprocessor type 25 KV AC Electric Locomotives. The system should have the added advantages over the earlier system such as:-

i) It should have substantially lesser weight (not more than 24 Kg) in comparison to conventional wheel type Controller of 40 Kg.

ii) It should acquire lesser space not more than (400 mm length x 250 mm width). Height of the equipment should be not more than 170 mm max without handle making it comfortable for driver to operate master controller in sitting posture.

iii) The operational aspects of stick type master controller should be similar to conventional wheel type controller.

1.3 Any deviation from the standards laid down with a view to improve the performance, utility and efficiency of the equipment will be given due consideration provided full particulars with technical justification and adequate data to enhance the performance of equipment is given. However no major deviation in the specified over all dimensions of mounting, cable routing, over all space requirement specific to depth of controller shall be allowed. The master controller has to be cam shaft switch type only.

2.0 SCOPE:

2.1 This specification covers the manufacturing and supply of stick type master controller for use on 25 KV, 50 Hz, single-phase electric locomotive of Indian Railways. Master controller design should be able to interface with both microprocessor and non-microprocessor type locomotives.

3.0 SERVICE CONDITIONS:

3.1 The Stick Type Master Controller shall operate satisfactorily under the following climatic conditions: -

i) Ambient temperature varies from 0oC to 55oC with 100 % humidity and an altitude 1200 meters above sea level.



ii) During dry whether the atmosphere is dusty. The equipment shall be working in coastal areas with corrosive atmosphere.

3.2 The master controller and its mounting arrangement shall be of robust design and shall withstand the shocks and vibrations satisfactorily. Following test as per Category 1 class B of IEC 61373 for rolling stock equipment for Railway application are to be satisfied.

i) Functional random test as per clause no. 8.0 ii) Simulated long life testing as per clause no. 9.0 iii) Shock testing as per clause no. 10.0 4.0 GOVERNING SPECIFICATIONS:

4.1 Specification refers to following standard specifications in respect of requirements and procedure and will be complied with whenever indicated:-

i) IEC-60077-1 : General service conditions and general rules.

ii) IEC-60077-2 : Electro technical components and general rules.

5.0 GENERAL ARRANGEMENT & CONSTRUCTION:

5.1 The basic design concept of Stick Type Master Controller is based on modular concept of compact design. The crew friendly cabs are being designed for ease and comfort of the driver. The driver while in sitting posture should be able to operate the controller with ease and enough leg space is created below the console where controller is mounted. All handles provided in controller should be easily accessible without any strain to the driver in extending arms while driving locomotive.

Following features are to be kept in mind while designing the controller.

i) The cam switch with cam arrangement should be similar to existing controller. Cam switch program is different for every type of locomotive, hence cams fixing arrangement should be such that cams can be replaced if circuit modification is done on locomotive and changes are required on controller.

ii) All cam switches, springs and rollers should be replaceable without much dismantling.

iii) Material used on handles should be environmental friendly and should not cause any damage to human skin while in operation.

iv) The components are to be designed as guide fit with no use of locating or dowels to set the angular rotation of cams with shaft.

v) The Master Controller should be mechanically interlocked as defined in clause 6.0 of this specification.

vi) Mounting should be with 4 nos. M6 type holes.

vii) Handle bar should be of minimum 12 mm diameter of stainless steel.



viii) To reduce the repair or replacement of sub-assemblies the controller shall be designed in such a way so that all regular replaceable components i.e., springs, rollers, cam switches and critical & periodic maintenance schedules are done within 30 minutes. The RDSO may ask for demonstration during type test.

ix) The marking of label should be engraved in the top plate.

5.2 Operating Handles:

The Stick type Master controller will have three handles as detailed below for complete operations as in conventional master controller. All these handles shall be mechanically interlocked with each other in similar fashion so as the drivers should have the same feel while driving the locomotive.

5.2.1 Reverser (MPJ) Key :

The reverser key (MPJ) should be of CLW type. Same CLW make key to be inserted in same vertical plane as in old conventional type master controller. Operation of the reverser key should be same as conventional key which will be inserted and press down by right hand palm and move the handle in desire position by left hand. The key can only be inserted or withdrawn from controller at „0‟ position. Key handle should be mechanically linked to the camshaft to actuate the cam switches mounted on every individual cam. There should be minimum 6 NC combination of cam switches. Cam switches should confirm to CLW drawing no 3TWD.101.138.

5.2.2 Throttle Handle (MP Handle):

Throttle handle (MP handle) shall be designed for stick type movement and placed at the extreme right hand side. There should be Eight positions of this handle ( + , N , - , P , 0 , - , N , +).

The Maximum degree of rotation of this handle shall be 900 +/- 50. The division of all Eight positions should be placed in such a manner that driver should feel the notch on every position. The notch formation on the wheel should have enough depth to arrest the roller for avoiding slip of handle

There are two main divisions of this handle. Away from driver side of this handle is used for powering the locomotive for traction. The following notches are used for this application.

0, - , N , +,

Driver side of this MP handle is used for powering the locomotive for Braking. The following notches are used for this application.

+ , N , - , P

The „0‟ position of MP Handle is neutral position and „P‟ position is for brake set up. This is a very critical junction in driving locomotive. When driver wants to



bring throttle (MP handle) from traction side to braking side to apply dynamic braking the MP handle should not be brought to braking side instantly as this will

affect traction motors and lead to heavy jerk. To avoid this , “U” path for MP handle is made at the crossing junction. This redirects the throttle handle (MP handle) from traction to braking and vice-versa for Minimum Time to Change over (MTCO) operation.

Throttle (MP handle) should be mechanically linked to the camshaft to actuate the cam switches mounted on every individual cam. There should be minimum 14 nos. combination of cam switches. Cam switches should confirm to CLW drawing no 3TWD.101.138.

5.2.3 Field Weakening Handle (MPS):

The Field-weakening handle shall be designed for stick type movement and placed at the middle position of both the MPJ and MP handle. There should be five positions of this handle 0,1,2,3 and 4. Position no.4 should be towards driver side.

The maximum degree of rotation of this handle should be 800 +/- 50 . The division of all positions should be equally placed to each other. The notch formation on the wheel should have enough depth to arrest the roller for avoiding slip of handle.

The handle should be mechanically linked to the camshaft to actuate the cam switches mounted on every individual cam. There should be minimum 4-nos. combination of cam switches. Cam switches should confirm to CLW drawing no 3TWD.101.138.

6.0 MECHANICAL INTERLOCKING BETWEEN THREE HANDLES:

6.1 All these handles shall be mechanical interlocked with each other for safety of driving locomotive as given below:

S. No.

Handle Position Mechanical Interlock

1. Reverser Key at “0” position Throttle (MP handle) and field handle gets locked in “0” position.

2. Reverser Key moved either “F” or “R”

Throttle handle (MP handle) can be moved towards Traction or Braking.

3. Throttle handle (MP handle) at “0” position

Reverser Key can be turned from “0” to “F” or “R”

4. Throttle handle at any position except “0”

Reverser Key gets locked in either “F“ or “R” position.

5. Throttle handle (MP handle) moved towards Traction

Field handle can be moved to all four positions as desired

6. Throttle handle (MP handle) moved towards Braking

Field handle gets locked at “0”position

7. Field weakening handles at any If the Throttle handle (MP handle) is



position other than “0” brought from Traction N to – or to “0” position field handle shall automatically return to zero position.

6.2 The cam sequence of stick type master controller would be initially tested as per

standards of WAG7 locomotives.

7.0 MOUNTING DIMENSIONS AND SPACE REQUIREMENT:

There is limited space inside driver‟s console. The overall dimensions and mounting frame for retro fitment are defined in the annexure-2. Supplier has to design the master controller, which can be accommodated in the space defined. The depth of the controller has to be maintained maximum 175 mm and any major deviation on this is not acceptable.

8.0 WIRING, CONNECTORS & CABLES:

All cam switches are to be wired with thin walled E-beam cables as per RDSO specification and approved source. This controller will be interfaced to locomotive through coupler. One 26 pin bayonet connector size 28-12 of Amphenol/Allied make shall be used which is complying (MIL-C-5015) MIL standard. If any other interface i.e. terminal board or any other couplers are required, prior approval from RDSO has to be taken.

Wiring details of 26 pin circular connector

Sl. No.

Male coupler Pin No

female coupler Pin No

Female coupler Cable ferule no. ref.

Type of pin

Cable No. Signal Name

Conv. loco

MPCS loco

1. A A A5 O/P #009 #091 J (Running Forward)

2. B B A6 O/P #010 #092 J (Running Reverse)

3. C C A4 O/P 903 #097 J (Braking Forward)

4. D D A3 O/P 904 213 J (Braking Reverse)

5. E E B3 O/P #079 Spare Q52

6. F F A2 O/P 500 Spare CCLSA

7. G G B13 O/P 144 Spare L1- L3,

L4- L6

8. H H B5 O/P 063 or 064

Spare EMERGENCY UP/DN

9. Y Y B15 O/P #022 Spare Q50

10. Z Z SPARE SPARE



Sl. No.

Male coupler Pin No

female coupler Pin No

Female coupler Cable ferule no. ref.

Type of pin

Cable No. Signal Name

Conv. loco

MPCS loco

11. a a SPARE SPARE

12. b b SPARE SPARE

13. d d SPARE SPARE

14. J J A19 O/P #091 123 S11, 21, 31, 41, 51, 61

15. K K A15 O/P #092 124 S12, 22, 32, 42, 52, 62

16. L L A18 O/P #093 125 S13, 23, 33, 43, 53, 63

17. M M A17 O/P #093 or 094* as present

126 S14, 24, 34, 44, 54, 64

18. N N B16 I/P 023/1 Spare Bat -ve

19. P P B1 I/P 041/1 or 041/2

Spare BL1 OR BL2-(6)

20. R R B14 I/P 027/1or 027/2

Spare BL1 OR BL2-(5)

21. S S A1 I/P 100 Spare Bat +ve

22. T T B6 O/P 071or 072 Spare Q46

23. U U B9 I/P 005/1 or 005/2

701/1 or 701/2

BL1 OR BL2-(3)

24. V V A16 I/P #090 Spare GR 20th Notch

25. W W B2 O/P #045 #093 MP+ (UP)

26. X X B4 O/P #055 #096 MP- (DN)

Note:- Male Coupler Socket 28-12S (to be mounted on master controller)

Female coupler Plug 28-12P (to be wired with loco cables) supplied along with suitable soldered 5 meters cable and other end with feruled 3mm sq lugs. Spare pins are also wired and feruled as „spare‟ which are not connected to TB and will be kept for future use.

9.0 MATERIALS AND WORKMANSHIP: 9.1 For construction of Master Controller the supplier has to submit detail list of

material proposed to be used for prior approval of RDSO. All materials shall be designed to mitigate risk of corrosion and decay for the expected life of controller.

i) All exposed hardware should be flush mounted.



ii) The master controller should contain no harmful material such as asbestos, Cadmium, etc. No hazardous material or fluid may be used in operation or maintenance of this controller.

iii) All non-metallic components shall meet national smoke and flame retardant specifications.

iv) Grease or Oil should confirm as per IS Specification.

9.2 Components requiring periodic maintenance, inspection or removal from vehicle shall have careful consideration for easy access, removal and replacements requirements for which special tools shall be avoided.

10.0 FEATURES :

S.No. DESCRIPTION DATA SPECIFIED

1 Specification IEC 60077

2 Normal Humidity 100% (Non Condensing) 3 Coastal areas Salty atmosphere

4 Vibration & Shock As per IEC 61373, Cat-1 class B

5 Ambient Temperature 00 C to 550 C

6 Stick Rotation of all 3 Selector Handle Reverser (MPJ), Throttle (MP), Field (MPS)

MPJ = 60o ,

MP = 90o ,

MPS = 80o

7 3 Nos Notches in Reverser Selector (MPJ)

Forward -0-Reverse

8 8 nos. Notches in Throttle (MP) (+),N, (-), 0, P, (-), N, (+)

9 5 nos. Notches in Field Selector (MPS)

(0, 1,2,3, & 4) Notch

10 CLW Type CAM Switches on Throttle, Field and Reverse Handle

Drg. No. 3TWD.101.138

11 Size (L x W x H) in mm 400X250 mm

Height = 170 mm Max. Without handle

12 Approximate Weight 24 kgs Max

Total no. of auxiliary switch

6 Nos. on Reverser handle

14 Nos. on throttle handle

4 Nos. on field handle



10.1 Material List:

Sr. No.

DISCRIPTION MATERIAL SPEC/STANDARD

(Latest)

1 Body

i) Top Plate Structural Steel/Aluminum alloy LM25

IS: 2062-1992/BS-1490-1988

ii) Bottom Plate Structural Steel/aluminum alloy HE30/6082

IS: 2062-1992/ EN AW-6082

iii) Side Plate Aluminum alloy HE30 ENAW - 6082

iv) Springs Spring Steel Wire Grade-2 IS: 4454-1981 Part-1

v) Cam Shafts Structural Steel/ EN series steel

vi) Cams Aluminum alloy HE30 ENAW - 6082

2 Handle Stainless steel AISI-304

3 Cam for Mach. Interlocking & Switch

Iron castings with spherical modular graphite/ mild steel

IS: 1865-1991/

IS: 2062-1992

4 Knob Phenolic Moldings

Materials Gr-3

IS: 1300-1966

5 Bearings Ball /thrust Bearings Make NBC, SKF, NTN, FAG

6 Hardware Standard High Tensile 8.8 Grade

IS: 1367 (Part 3) - 2002, Make Lps/Tvs/ Unbrakob



11.0 TESTS:

11.1 Test descriptions The tests to be carried out on complete unit are given in the following table,

Sl. No. TESTS SPEC. CLAUSE NO.

TYPE TEST

ROUTINE TEST

1. Visual Inspection 11.5.1

2. Functional test 11.5.2

3. Dielectric Test 11.5.3

4. Insulation Resistance test

11.5.4

5. Mechanical Endurance Test

11.5.5

6. Vibration and shock Test 11.5.6

11.2 TYPE TEST: Type test shall be carried out on equipment of the approved design. It is to

clearly understand that any changes, required to be done in the prototype or any additional tests other than specified herein are required to be conduct on the prototype unit or its components, they shall be done expeditiously. During the process of manufacture of the equipment, if the purchaser so desires, he may conduct /repeat any of the routine or additional tests to satisfy himself that the quality of the module being manufactured is of required standards.

The type tests shall be carried out by RDSO representative on prototype unit

either totally or in part. Under the following conditions without any additional cost.

(a) A manufacturer undertakes to manufacture for first time. (b) An important change in design details of machine has been introduced. (c) Specification is modified necessitating the re-designing of equipment. (d) Unsatisfactory performance reported from user Railways. (e) Resumption of production after an interruption of more than two year

RDSO may conduct surprise check on manufacturing process and quality control along with any of the tests to ensure quality of product and its conformance to RDSO specification.

11.3 ROUTINE TEST: Routine test shall be carried out in every equipment of each

order.



11.4 Tests will be carried out on the prototype unit as per relevant IEC specification or mutually agreed test program. Manufacturer will bear the expenses of the tests.

11.5 Test details: 11.5.1 Preliminary Visual Checking:

i) It should be ensured by manufacturer that all the components are bought as per RDSO approved drawings and from RDSO approved sources. A sample check shall be made. The supplier should furnish all test certificate of material submitted at the time of type test.

ii) General inspection of the master controller shall be carried to check workmanship and conformity to the dimensional drawing.

iii) The auxiliary contacts shall be examined visually for alignment opening and closing of the contacts for 20 times.

v) The contact gap and contact pressure for the auxiliary contacts shall be measured and recorded. The permissible limits of the contact gap are furnished below:

Nominal values Observed values

Contact pressures in grams

Contact gap in mm


Contact gap in mm

160 to 260 4 to 6

11.5.2 Functional test:

11.5.2.1 Mechanical Interlocking:

Refer clause no 6.0 of this specification.

11.5.2.2 Functional testing: Checking of coupler pins connection as per clause no. 8.0 of the specification and functionally test should be done as per annexure-3.

11.5.3 Dielectric Test:

The master controller shall withstand the dielectric test as per IEC 60077-1 (General) Cl. No. 9.3.3.3.2 according to IEC 60077-3 ( for DC supply) Cl. No. 9.4.4 as under:

-1.5 kV AC between all live parts connected together and frame for one minute.

-1.5 kV AC between two adjacent auxiliary contacts for one minute.

If the test has to be repeated, the voltage shall be reduced by a factor 0.80 to avoid damage to the insulation of EUT. ( as per latest IEC 61287 cl no. 4.5.3.16.4).



11.5.4 Insulation Resistance Test:

The insulation materials used in Master controller shall be rated to perform reliably while operating continuously in harsh environment and maximum temperatures. Insulation resistance shall be measured with 500 volts megger on complete Master Controller with wiring of switches up to coupler. Insulation resistance shall be measured between all switch terminals shorted together and body of master controller. IR value shall be

more than 200 M.

11.5.5 Mechanical Endurance Test:

The test for mechanical endurance for operating handles shall consist of: -

i) Throttle handle (MP handle) should complete 250,000 operations without lubrication as per cycle covering traction and braking sides (in each cycle) at no load. The rate of operating cycle shall be 5 cycles per minutes and the master controller shall work without any incidence.

ii) 50,000 operations for reverse handle (MPJ) and field weakening handle (MPS) shall also be performed.

iii) Contact pressures & gap of 5 different contacts shall be recorded as under:

S.N.

Operations


Contact gaps in mm

1 2 3 4 5 1 2 3 4 5

1. Before starting the test

2. After 25,000 operations








10 After 225,000 operations

11 After 250,000 operations

iv) Before commencement of test and after completion of 250,000 operation measurements shall be carried out on locations such as slot key, lever, shaft, frame bore, cam bore and thickness, spring force on different positions, annular displacement of handle and clearance between cam profile and auxiliary roller. Deviation shall be within the specified limits to be jointly decided before the test.

v) After mechanical endurance master controller shall be able to operate normally and the measurement taken on different parts shall be within the specified limits.



vi) The mechanical locking of the master controller shall be as per clause 6.0 of this specification.

11.5.6 Vibration and shocks Tests:

The vibration and shocks tests shall be carried out as per category 1, class B of IEC 61373 for rolling stock equipment for Railway application. The following test should be carried out.

i) Functional random test as per clause no. 8.0

ii) Simulated log life testing as per clause no. 9.0

iii) Shock testing as per clause no. 10.0

The parameters of the above testing as per category 1 of class B are given below:-

11.5.6.1 Vibration Test: As per fig no. 2 of IEC 61373

Test Frequencies Orthogonal Plane

Duration ASD level (m/s2)/Hz

RMS Value m/s2

Functional random test

5-150 Hz Vertical 10 Min 0.0298 1.00

Transverse 10 Min 0.0060 0.45

Longitudinal 10 Min 0.0114 0.70

Simulated log life test

5-150 Hz Vertical 5 h 1.857 7.9

Transverse 5 h 0.388 3.5

Longitudinal 5 h 0.901 5.5

11.5.6.2 Shock Test: As per fig no. 6 of IEC 61373

Test No. of shock

Orthogonal Plane

Duration Peak Value m/s2

Type of shocks

Shock test

18 Vertical 30 ms 30 3 positive & 3 negative

Transverse 30 ms 30 3 positive & 3 negative

Longitudinal 30 ms 50 3 positive & 3 negative

After the test there shall be no resulting damage, abnormality in the operation of equipment.

After completion of mechanical endurance test, vibration and shock tests, the equipment shall again be subjected to dielectric test.

12.0 COLORING OF FRAME ASSEMBLY:

The top plate of master controller should be anodized with gray color. The Bottom cover plate of master controller is to be painted as per IS-5 (631).

13.0 MARKING:



Each Stick Type Master Controller shall be provided with a name plate or plates legibly and indelibly marked with at least the following information: -

i) Name or trade mark of the manufacturer

ii) Type/Designation

iii) Month & Year of manufacture &.

iv) Batch No. of manufacture at a visible place.

13.1 PACKING:

Each Stick Type Master Controller will be packed in Polly Pack with wooden crate or high density thermo coal boxes to protect the equipped panel from any damage due to transit vibrations, rains, moisture and dust etc. during transportation. List of equipment‟s shall also be enclosed along with each packing.



Annexure-1



Annexure-2

Details for mounting stand of STMC fitted with conventional locomotives



Annexure-3

Testing sheet of STMC for functionally testing 1. For MP handle:

Sl.

No.

26

coupler

pin nos.

Ferule Ref

no. of

Female

coupler

Plug

(28-12P)

MP handle positions Observations Remarks

Traction MP

(0)

Braking

(+) (N) (-) (0) (P ) (-) (N) (+)

1 P-W B1-B2

2 P-E B1-B3

3 P-X B1-B4

4 P-H B1-B5

5 P-T B1-B6

6 U-D B9-A3

7 U-C B9-A4

8 U-A B9-A5

9 U-B B9-A6

10 G-R B13-B14

11 N-Y B16-B15

2. For MPJ handle:

Sl.

No.

26

coupler

pin nos.

Ferule Ref

no. of

Female

coupler

Plug

(28-12P)

MPJ Handle

positions

Observations Remarks

(F) (0) (R)

1 S-F A1-A2

2 U-A B9-A5

3 U-B B9-A6

4 U-C B9-A4

5 U-D B9-A3

3. For MPS Handle:

Sl.

No.

26

coupler

pin nos.

Ferule Ref

no. of

Female

coupler

Plug

(28-12P)

MPS Handle positions Observations Remarks

(0) (1) (2) (3) (4)

1 V-J A16-A19

2 V-K A16-A15

3 V-L A16-A18

4 V-M A16-A17

Note : Continuity is shown as shaded blocks.



Testing sheet of STMC (MPCS) for functionally testing 1. For MP handle:

Sl.

No.

26

coupler

pin nos.

Ferule Ref

no. of

Female

coupler

Plug

(28-12P)

MP handle positions Observations Remarks

Traction MP

(0)

Braking

(+) (N) (-) (0) (P ) (-) (N) (+)

1 P-W B1-B2

2 P-E B1-B3

3 P-X B1-B4

4 P-H B1-B5

5 P-T B1-B6

6 U-D B9-A3

7 U-C B9-A4

8 U-A B9-A5

9 U-B B9-A6

10 G-R B13-B14

11 N-Y B16-B15

2. For MPJ handle:

Sl.

No.

26

coupler

pin nos.

Ferule Ref

no. of

Female

coupler

Plug

(28-12P)

MPJ Handle

positions

Observations Remarks

(F) (0) (R)

1 S-F A1-A2

2 U-A B9-A5

3 U-B B9-A6

4 U-C B9-A4

5 U-D B9-A3

3. For MPS Handle:

Sl.

No.

26

coupler

pin nos.

Ferule Ref

no. of

Female

coupler

Plug

(28-12P)

MPS Handle positions Observations Remarks

(0) (1) (2) (3) (4)

1 V-J A16-A19

2 V-K A16-A15

3 V-L A16-A18

4 V-M A16-A17

Note : Continuity is shown as shaded blocks.

Date post:	25-Sep-2020
Category:	Documents
Upload:	others
View:	5 times
Download:	0 times

GOVERMENT OF INDIA MINISTRY OF RAILWAYS · 5.2.1 Reverser (MPJ) Key : The reverser key (MPJ) should...

Documents