p

S. N

1.

Clause

No.

Clause

3.3.2

0 '--:_,J C

C

ompiled com

ments on D

raft modification sheet no. R

DS

O/P

EIS

PE

C/A

C/0080-2019fR

ev-2lforPush P

ull operation

Description

For control data /signal

transfer betw

een the two

locomotives

through rake for push

pull operation as per Elect.

{Loco) D

ie. Modification

sheet mentioned

in clause

3.2, laying

of 2 sets

of w

ired· train

Bus {W

TB) w

ith 22

core cables

compliant

to U

IC-558

throughout the

rake is

necessary, in

which

4 cores

shall be available for

spare. O

ne set of w

ired train bus

will be

redundant D

ata cable cores shall run

through pin

no. 10

& 11

of the

22 pin

UIC

connectors (plugs

& sockets).

Further. R

ailway

Board's

MO

M

held in

Board office

on 30.10.2019 issued vide letter no.97/E

lecl {G

)/114/1Pl1

dated 27.11.2019

has suggested

that R

OSO

m

ay consider

option of

running of

cable with

connector com

plying U

IC

558 on one side

ICF

IEC

-61375 is the IEC

standard

for TC

N

operation and

not for

rectangular type

coupler. Also

UIC

-558 is

not applicable

for TC

N

operation and

only applicable

for rem

ote switching,

remote

control and

PAPIS system

. IEC

-61375

is the

comm

on standard for

testing for

confirmation

for TC

N both circular

& rectangular

shape connectors. H

ence standard

mentioned

for circular

type connector m

ay be changed

form

UIC

-558 to

MIL-

DTL-5015

(MIL

standard) and

similarly standard

mentioned

for rectangular

type connector m

ay be changed from

!EC

61375 to

IEC

61984/EN

175301-801.

f'~1

-.1~

Mis Khandelw

al

Couplers as U

IC

standard also com

ply with IEC

• 61375

M/sG

irivar

1. UIC

couplers comply to

IEC 61375

comm

unication protocol including Ethernet protocol. Further, w

e understand U

IC

couplers have been tested for push pull operation w

ith TCN

protocol in W

R/Indian

Railw

ays already. Therefore, there is no doubt that U

IC couplers

comply w

ith IEC 61375 com

munication protocol

including Ethernet protocol.

2. UIC

standard covers push pull operation.

13. We understand that U

IC

couplers were

•designed-in" both locom

otives and LHB

passenger coaches produced by Indian R

ailways in 1996.

These couplers have rendered successful service since 1996 in m

ulti operation of locom

otives.

NR

Para 3.2.2: Provision of IEC

61375 compliant connectors

on one

side and UIC

558 connecter on other side has been

suggested as

per M

OM

held in Board's office on 30.10.19 for ascertaining the

performance

of both

type of

connectors. To

include both

type of

connectors in

the m

odification sheet

for provision in the coaches w

ill not only result in increased inventory

but also

i_n operational

difficulties as

under:

CR

1. C

entral R

ailway

(BB D

iv) has

been using

existing train

comm

unication w

iring having

UIC

558

couplers for EOG

/HO

G

coaches hauled

by Locos

in push

pull m

ode. Even through the U

IC

558 couplers

are spring

loaded with flap type

locking. Several

failures due

of loose

contacl open

contact and

mishandling

by then

staff and vendors

o C

arrying tw

o types

of 12.

cross jumpers

in each

coach to

meet

the existences

have been reported. It

has been

observed that

coaches from

different

PU's

(ICF,

RC

F & MC

F) are having different

make

of U

IC

558 couplers

and sockets,

due to w

hich problem

s of

interconnectivity betw

een coaches have

o Loss of redundancy on reversal of coach

o Keeping record of each coach

for the

end selection w

hile putting in the rake

o Earm

arking of rakes to

been encountered. avoid

mism

atch of

13. As per suggestion of the utilization of one set of

connectors o

Increase in resistance of train bus by using cross jum

pers

ln view

of

above, it

is recom

mended

that only

one type

of connectors

shall be used to maintain

the interchangeability

of coaches.

22 core cable with U

IC

558 in

left side

and other

set w

ith IEC

61375 on right side, a problem

will be faced in

case of detachments. If

the replacem

ent coach is

window

turned

then U

IC 558 and IEC 61375

connectors positioned

diagonally to each other and

interconnection betw

een coaches

will

be difficult 4.

UIC

558

connectors w

ith 22 core cable on

one side of coach under fram

e m

ay not sustain

vibrations, enroute

ill handling

during w

atering and

may

cause loose/

open

Mis

§chaltabau i)

We

have successfully

done running

trials on

WR

w

ith Schaltabu

make

couplers w

ith TC

N,

VCU

fitted

locomotives

with 20

coaches. ii)

UIC

couplers

are IEC

61375 com

pliant and do not

having rectangular

shape. iii)

Referred

Railw

ay Board's

letter no.97/E

lec~G)/114/1P

l 1 dated

27.11.19

and suggestions

from

CR,

mention

following

two

bullet points: In future, w

e may have

to sw

itch over

to Ethernet connectivity for w

hich connectors

complying to IEC

61375 w

ill be needed". In this regard w

e would

like to state that 1.

The assum

ption that

connectors w

ould be

needed for compliance

as per

IEC

61375 standard needed to be re-considered.

UIC

couplers

are m

odular connectors

and carry

many

types of signals such

as Ethernet

RS 484, control signals etc. As per IR

S 50558 latest U

IC 558 standard). The

version of UIC

couplers for

Ethernet and

data transm

issk>n is

UIC IT

and can be established using a different "gigabit m

odule" in

the sam

e coupler.

Detailed

reference list

is attached as

Annexure-1.

Excerpts from

IR

S 50558 are also attached as annexure -2.

2. As

mentioned

earlier,_

Mis H

arting Rem

arks

As per

Zonal Raitw

ay suggestion and

R~ Bd

directives clause

has been am

ended. \~1 \~\

and connector

complying

!EC 61375

on other

side of

coach. This arrangem

ent shaH

provide m

ore flexibility to com

munication

network. Further,

it will be possible to

evaluate perform

ance of

two

type of

connector.

Some

of the

Zonal R

ailways

have raised

the issues, regarding shape

of connector com

plying to !EC 61375.

In Rly BdMoM

dtd 30.10.2019 issued vide letter no.97/E

lecl (G

)/114/1Pl.1 dated 27.11

.2019, it is m

entioned that

Central

railway

had modified one

rake w

ith m

odular connector com

pliant to !EC 61375

and carried

out trial

of modified rake

with

TCN

VCU

fitted

locomotive

in Pune

-M

umbai

Intercity Express

(16 coach

rake). Stationary validation w

ith 20 coach

rake has

already been

done by CR

and running trials are expected

to be

completed

soon. CR

has proposed

for

f~~

1--

i1-

rO Q

~J

contacts. In

comparison, !EC 61375

connectors are press-fit and

bolted, so

jerks vibration

and ill

handling enroute will not cause

loose/open contacts of pins.

5. In loco UIC 558 sockets are used both for HO

G

socket and

push pull

operation with 13

and 18

pins. In

field, frequent

cases of

misunderstanding

have been

reported w

here push

pull m

ale connector w

as inserted in HO

G socket resulting

in damage to pins and

failures of

both HO

G

and push

pull system

. H

ence, it is suggested that for push pull

and HO

G system

. Hence it

is suggested

that for

push pull

and HO

G

operation different type & shape of UIC or !EC sockets be used.

!s. Presently, only one UJC 558, 18 pins & 13 pins socket

is provided

on loco

for push

pull &

HOG

operation.

It is

suggested to

provide one m

ore UIC 558 18

pin & 13 pin socket be provided(connected internally) for reliability, so that rt one set of u IC pins

gets dam

aged, other m

ay be utilised & services of Push pull / HO

G be m

aintained on

loco for push pull

WR has alrea~y tested

UIC couplers

as per

TC N protocol defined by

!EC 61375. 3.

Inclusion of !EC 61375 as one of the standards essentially

means

U IC

558 standard

due to

following reasons.

a) !EC

61375 is

only a

comm

unication protocol and

not a standard of

reference for

connectors. UIC

558 connectors

are inherently

!EC 61375

compliant and therefore

are very much suitable

for carrying

comm

unication signals

in intervehicular

connectors. C

opies of

the relevant

pages of

!EC 61375 are attached

as Annexure-3. b)

RD

SO

has suggested

two

feeders to

run through

the train

for carrying

the com

munications signals

from

o0one locomotive

to the

other. Tw

o feeders are planned to have redundancy in the system

. Both

the feeders carry the sam

e signals as per the sam

e com

munications

protocol. Therefore, it is clear

that couplers as

per UIC

558 standard

carry signals as per IEC 61375

comm

unication protocol,

hence it

is clear that UIC couplers are

!EC 61375

are com

pliant c)

In both the feeders UIC 558 com

pliant cable is being used. Then w

hat is the need to m

ention !EC 61375 as standard as one of the feeders. This

requires detaiJed

examinations.

d) Therefore,

for Ethernet

connectivity, no

~arate

coupler other

provision of IEC

61375 com

pliant connectors

vide letter

no. L.253.AC

141/A Push

pull dated

10.09.2019. In

above C

entral R

ailway letter, it

is clear1y

mentioned

that the

push pull

operation has

been carried out w

ith m

odular rectangular

type connector instead

of UIC

558.

P~.3 * !-~

v l . .:

than U

IC

IT (U

IC

coupler w

ith gigabit

module) is needed. This

shall come w

ith features such as train parting, IP protection

while

unplugging etc.

Further, the referred

letter also

mentions

that ·This

arrangement

shall provide

more

flexibility to

comm

unication netw

ork, further it w

ill· be possible to evaluate the perform

ance of tw

o type

of connector.

Connector com

plying to IEC 61375 should be planned in a

matter

to cater

future extension of com

munication

part and also able to cater E

thernet connectivity whtch

might be needed in future:

1. In this

regard it

is pertinent

to note

following. For any future

change related

to E

thernet connection, the

respective cable

along w

ith connector

module

and pins would need to

be changed due to higher data

transmission

rates, for

clarifying the

above statem

ent for

Ethernet

connection it is required to

use the

cats, cat6,

cat6a or

cat 7

type of

cables to

handle the

higher data transmission.

Therefore even

through the connector design ( as per UIC 5581 IR

S 50558) has the required feature in

the sam

e connector,

the existing

cable form

push pull operation w

ould not

be suitable.

This

essentially m

eans whole

work

has to

be redone including the connectors. Therefore,

separate set

of com

munication

network w

ould have to be laid

in the

train and

existing train bus for push pull cannot be used.

,-'

"-..-I

p~

'f -+ J..1-

2. There is

no specific

advantage of rectangular screw

type

connector used

in CR

over UIC

coupler in this regard. For Ethernet

connectivity a

different •giga bW m

odule has

to be

incorporated along w

ith new cable for

high speed data transfer. E

xisting connector is not suitable

for Ethernet

connectivity.

3. From above

points it is clear that IR

would save

only the cost of connector fram

e which is negligible.

On the other hand, future

requirements

are not

known today:

4. The future

requirements

may

call for

multiple

connectors due to various reasons

such as

redundancy etc. 5. The push pull operation is

covered by

UIC

558

standard. Please

refer A

nnexure-4. 6. The

inclusion of

shape has

no technical

basis; how

ever, it is based only one

particular design/m

ake w

hich is

against the

public procurem

ent policy.

Thus, we

are strongly

object to the provision of shape and request R

OSO

to delete il

7. UIC 558

is an

open standard im

plemented by

International Railw

ays for standardisation

across different

rolling stocks.

These are

particularly useful

when

frequent coupling/decoupling

of coaching

stock has

to take place. The design of couplers

is described in the

standard. Therefore,

any com

pany can

produce UIC

couplers w

ithout any issue related to patents/ copy rights.

8. Hence.!. no logic supports

u {~·

the requirem

ents of

another type of connector on

one of

the feeders.

So, we

suggest keeping U

IC

standard for

both feeders.

2 C

lause The

arrangement

As per clause no.

We have

UIC

standard covers -

We recom

mend that

Harting

Clause has

3.4 of 01

sets of 22 3.4, tw

o types of im

plemented

push-pull operation. requirem

ents of IEC

61375 com

ply to been

core cable

connectors are

successfully push should be rem

oved as IEC R

OS

O

modified.

connection w

ith covered

on each

pull scheme in

61375 refers to UIC

standard requirem

ents U

IC plug & socket

side of the coach. W

R w

hich has and its essentially m

eans the how

ever we

circular (U

IC-558

Circular

type been tested for

same.

request com

pliant) (in left connector

on left

IEC 61375

RO

SO

to side

of the

side and

protocol and m

odify coaches) and one

rectangular type

MIC

AS

protocol specification

set of

22 core

connector on right of A

BB

. as below

, cable

connection side

in all

the w

ith IE

C

61375 coaches.

With

"The

plug &

socket this arrangem

ent, arrangem

ent rectangular

180° rotation

of of 01 sets of

compliant to (IE

C

coaches is

not 22 core cable

61375)

(on right

possible due

to connection

side ofthe

mism

atch of

with C

ircular coaches)

for connectors.

type Plug &

coach connecting N

ormally.

sleeper S

ocket shall be done as

type coaches (AC

com

pliant to depicted

below

2-tier & AC 3-tier)

UIC

558 in w

ithout any joints are

formed

in left side of the

except plug

& different

coaches and sockets.

orientation in

the one set of 22

rake. In

such a

core cable case,

connector connection

layout show

n in

with

the specification

Rectangular

is not

workable

type Plug &

and needs

Socket review

. com

pliant to IE

C61375

requirements

on the right side of the coaches shall be done as depicted below

without

any joints expect P

lug & Sockets."

In addition. w

e would like

to highlight the below

I

-H

arting I

Rectanaular

I

¥C-f-~

t

(___) \

I connectors (P

lug & S

ocket) m

eets IE

C61375

TCN

requirem

ents. C

onnector is designed & qualified per " A

nnexure 14_S

ett Declaration -

. H

AR

TING

C

onnector S

tandards" requirem

ents.

Requirem

ents in IE

C61984

and IEC

60664-1 is com

mon for

connectors (E

ither circular or R

ectangular) used in railw

ay applications w

hich is driven by E

N50467

(Railw

ay applications -R

olling stock-E

lectrical connectors. requirem

ents and test m

ethods)

3 3.5.1

In view

of Instead, IEC

W

e understand that UIC

H

arting This clause

remarks furnished

61375 standard is couplers w

ere "designed com

ply to has been

above, adoption

comm

unication -in" in both locom

otives R

OS

O

deleted.

of add-on jumper

protocol and it and LH

B passenger

requirement

as prescribed

in refers to VIC

558 coaches procured by

however w

e

clause no.3.6.3 is for establishing.

Indian Railw

ays in 1996 request

not feasible

for lntervehicular

as part of transfer of R

OS

O to

interconnection connection for

Technology contracts. update the

between

the W

TB, Therefore.

These couplers have specification

coaches in

the w

riting IEC

61375 reduced successful

as below

rake. as a connector

service since 1996 in specification is

multi operation of

There shall

incorrect locom

otives. be one R

ectangular type socket & olun

}~

Id,

1-~

u ~-. '---

compliant to

IEC

61375

fitted on one side of the coach and one C

ircular type socket & plug com

pliant to U

IC 558 to

other side of 4

3.6.2 the coach.

The Power

car M

entioning the UIC is a international

a) bl

Rectangular

design H

arting C

lause has will

have two

shape of the standard for

couplers being

non com

ply to been

types of

sockets coupler which can

intervehicular connection standard

design, there

RO

SO

m

odified. on

non-vestibule carry signal as

followed by International

would

be lot

of issues

requirement

side. Hence BO

M

per IEC

61375 Is R

ailways. Screw type

related to operation and

however w

e (clause5.0)

also not correct. connector or flip-on

maintenance

as request

should cover this This is because

connectors are basically additional jum

per cables R

OS

O to

requirement also.

IEC

61375 does industrial connectors as

would be needed. O

ne of update the

not mention any

re not as per any Railw

ay the feeders m

ay be not specification

connector shape standard for Inter

available in

case of

as below

and instead refers V

ehicular connections. coach

reversibility. This

to UIC

558 for These couplers have

will ham

per push

pull In pow

er car, connector

very limited life and do

operation severity. on non-

specifications. not offer crucial IP

c) R

ectangular shaped

vestibule side Therefore,

protection when opened.

connectors are not as per tow

ards right

mentioning the

any Railw

ay standard for side, one

shape is Inter

vehicular C

ircular type contradictory to

connection. They

are socket

the essence of based

on industrial

(female)com

pl standard itself.

standard. iantto UIC

.

They have

zero 558 shall be

ingress protection

provided and w

hen opened. tow

ards left .

They do

not have

side-one train parting feature.

Rectangular

. S

crew

type type socket

connectors take lot of (fem

ale) tim

e to

open and

compliant to

close the connectors IE

C-61375

which

is a

loss of

shall be crucial

time

during provided.

detachment

/attachment

of coaches.

. Indian R

ailway m

ust not

comprom

ise on

essential features

required for

train operation.

. U

IC

connectors are

plug in

type connectors having in built

cover, which

automatically

doses w

hen the connector

{?

~~

1.-1--

0 ~--

is decoupled

giving crucial

IP~

7 protection

during rainy season.

. IE

C 61375 standards

also call for plug in type

of connectors.

Please

refer Annexure-5.

5 3.6.3

leer m

odification, Sim

ilarly as

per IR m

ust avoid the IEC

61375 being H

arting A

s per Zonal

eft side and

right clause no.

3.6.2, situation of single

comm

unication protocol com

ply to Railw

ay

~id• to

be tw

o types

of source

depends upon UIC R

OSO

suggestion

~eterm

ined w

hile connectors

are dependency as it

standards for requirem

ent and R

ly Bd

)Jiewing from

pp

covered on

each is not good for

intervehicular how

ever we directives

SB

C)

end of

the side of Pow

er car. any system

. connection. IEC

61375 is request

clause has

each. W

hile C

ircular type

comm

unication standard R

DS

Oto

been

arming the rake at

connector on right for establishing

update the am

ended.

the Depot, it should

side and

comm

unication protocol specification

be ensured that all rectangular

type am

ong Railway vehicles. as below

UIC

connectors on connector

on left

This standard requires pne side and IEC

-side of Pow

er car. lntervehicular

"For

61375 connectors

With

this connections (W

TB) as m

odification,

are on

other side. arrangem

ent, per UIC 556/558

left side and

How

ever, under

180° rotation

of standard. Therefrore,

right side to

µnavoidable Pow

er car is not

IEC IEC

61375 is not a be

ircumstances,

possible due

to connector standard.

determined

connectivity m

ismatch

of W

hereas UIC

-558 is a w

hile viewing

l:>etween

one type

connectors. connector standard. In

from P

P(S

BC

)

0 other

type of

Further, different

case connectors have to end of the

Connectors shall be com

bination of

procured for TCN

coach. W

hile

h,aintained through plug and sockets

protocol as per IEC

forming the

hie suitable jumper

are available

in 61375, UIC 558 is the

rake at the

Pf adequate length. vestibule

end of

standard for connector D

epot, it

power

car w

hich procurem

ent . should be

The proper

is not correct from

ensured that

securing of

manufacturing

Future requirements of

all Circular

jumper

cable point of view

. data connectivity in

type should

be Indian R

ailways.

compliant to

ensured to

avoid UIC /IR

S standard takes U

IC

of any

falling of

care of all the data signal C

onnectors jum

per cable

connections including on one side

during run. Ethernet protocol

and required by Indian

Rectangular

Railw

ays in future. type

How

ever, It must be

connector noted that in case of

compliant to

additional connections IE

C-61375

for data transmission, the

are on other UIC cable w

ould have to side.

ve changed first with a

How

ever, suitable data cable. For

under exam

ple, when high data

unavoidable transm

ission is required circum

stance C

ats, Cat? cable m

ust s, connectivity

be used. betw

een one tvoe to other

P~

a +1

1-

--/

/ 0

\-·,.)

type of connectors shall be m

aintained through the suitable jum

per of adequate length. The proper securing of jum

per cable should be ensured to avoid of any falling of jum

per cable during run. "

·• The Length of Jum

per to Socket or S

ocket to S

ocket will be

approximately

30Meters.

This vary du

e to cable/conduit routing. D

uring Project execution exact length can be determ

ined 6

4.13 U

IC

558 &

IEC

On other hand,

Standardization H

arting A

s per Zonal .(iv)

61375 couplers at there are m

ultiple com

ply to R

ailway

Coach

ends sources for UIC

As you m

ay be aware,

RO

SO

suggestion should

be 558 com

pliant International Railw

ays requirem

ent and R

ly Bd properly

marked

couplers and along w

ith OE M

s of how

ever we

directives as "For push-pun·

hence it is a rolling stock and

request clause has

in order

to avoid

misconception

intervehicular R

OSO

to been

any confusion,

that only one com

ponents . update the

amended

. identification &

to com

pany m

anufacturers specification

maintain

integrity m

anufactures the established UIC standard

as below

with

other sam

e. We have

to facilitate couplers fitted on

implem

ented the standardization in

(iv) Circular

the coach. project at W

R at

intervehicular type

two-third the cost

connections between

connector of project at CR &

rolling stock com

plying to ER.

manufactured by

UIC

558 & different com

panies. R

ectangular Thus standardization

type m

ust changes in train connector

configuration and taking com

plying to place.

IEC

61375

P~

? 1--

.1-1-

,/

~

0 I

, v--..,/

couplers at

This standardization C

oach ends

helps in securing proper should be

connection, safety, taster properly

turnaround times, easy

marked as

maintenance and

"For push

ultimately saving of

pull" in order

operational and to avoid any confusion

, m

aintenance coast. D

esired features for Inter identification & to m

aintain Vehicular Q;onnecJions A com

mon design in

integrity with

other inter-V

ehicular connections and cables

couplers fitted

is laid down in the U

IC

on the coach. 5.1

standard for H

arting standardization purposes. This design

comply to

RO

SO

can be used to any com

pany interested in requirem

ent how

ever we

development of

standardized inte

r-request

vehicular couplers and R

OS

O to

cables. update the specification

Following are M

UST

as below

features for Inter Vehicular connectors for

For one rake

both the feeders of push of coaches

,

pull. cross jum

per of 22 core

Train parting feature to cable (04

avoid damage to

sets, each of connectors. In

length 2.75 m

eter) should be kept in pow

er car for connection betw

een loco to pow

er car, as under: (i) Tw

o sets should have C

ircular type plug (m

ale) com

pliant to U

IC 558 on

both side. (ii) A

nother tw

o sets should have C

ircular type plug (m

ale) com

pliant to U

IC558 on

I one side &

I other side should have

1:?

~1

-0 1-

j 1--

,/'

//

{[j ,,-, i •~_,

Rectangular

type plug (m

ale) com

pliant to IE

C-61375.

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11

-j i.