Transcript industrial presentation

INDUSTRIAL TRAINING
BHOPAL (MADHYA PRADESH)
UNDER THE GUIDANCE OF:
ER. H.K. PATIL
SENIOR MANAGER,
COMMIUNICATION DIVISION,
BHEL, BHOPAL(M.P.)
SUBMITTED BY:
MR. AMLAN BASU
ITM UNIVERSITY,GWALIOR(M.P.)
ROLL NO. : BETI1EC11009
BRANCH: ECE (INTEGRATED)
TOKEN NO. : VT-460/14
ABSTRACT
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4 weeks training
From 29th May,2014 to 25th June 2016
Communication Division
Motive: Telephone exchange, Fault checking,
Functions of department
ABOUT BHEL
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Founded in 1964
7th largest power equipment manufacturer in the world
Owned and founded by the Government of India
Is a Public sector of India undertaking
B. Prasad Rao (Chairman & MD)
Revenue: ₹ 50,156 Crores (USD 9.23 billion) (2012-13)
Employees: 48,399 (March 2013)
Products Manufactured: Gas and Steam Turbines, Boilers,
Generators, Heat Exchangers, Pumps, Switchgears,
Sensors, Automation and Control Systems, Power
electronics, Transmission systems, Transformers.
TELEPHONE EXCHANGE
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Telecommunications system
Used in public switched telephone networks
Consists of different electronic equipments
Main part is exchange (older system:
PBX[private branch exchange, modern system:
EPABX [electronic private automatic branch
exchange])
• Has 3 parts.
TELEPHONE
EXCHNGE
EPABX
MDF
(ELECTRONIC PRIVATE
AUTOMATIC BRANCH
EXCHANGE)
(MAIN
DISTRIBUTION
FRAME)
POWER
SUPPLY
(48 V DC)
M.D.F
(Main Distribution Frame)
• Signal distribution frame (connecting
equipments to cables and subscriber carrier
equipment)
• Flexibility in assigning facilities (at lower cost
& higher capacity)
EPABX
EXCHANGE MDF
FIELD MDF
TO DIFFERENT SUBCRIBERS
EPABX
(Electronic private automatic branch
exchange)
• Exchange
• Connect to the external or internal
communication lines.
• Also called auto numbers or land line numbers.
• 3000 numbers
• IRIS IVDX coral (provided by coral telecomm. that
has 4000 ports)
CORAL IRIS IVDX
• 4000 Ports divided into 8 frames and each
frame with 512 ports.
• Each port has a card
• Cards: MCC, PRI, FLC, DCC, FTC, PBC, RPBC .
MCC (MAIN CONTROLLER CARD)
• The first card of the frame
• Has a switching part and another DSP part
(ring back tone)
• MCC 8 / MCC 16 / MCC 32
• Dialling type: DTMF & FSK
PRI (Primary rate interface)
• Interface between the different channels or
DSP or Ring back tonnes.
• 30 channels per PRI (ex. 9 PRIs: 270 channels)
• Pair of 2 (incoming and outgoing)
• DID (direct incoming dialling) & DOD (direct
outgoing dialling) : Incoming junction (via
operator)
• FLC (feature line card) 16/32: The card
controls all the analog numbers. Connects the
exchange to exchange MDF.
• DCC (digital control card): The card controls all
the digital numbers.
• FTC (feature trunk card) & FCT (feature cellular
trunk): Responsible for the calls made to the
cellular devices/mobile which are connected
to the high gain antennas.
• The other cards PBC (peripheral bridge cards)
& RPBC (Rack peripheral bridge cards)
TELEPHONE
• Telecommunication device that enables 2 or
more users to communicate
• Invented by Alexander Graham Bell in 1876
• Earlier had rotary dial but now has DTMF push
button
• 2 types: Analog telephone & Digital telephone
• Frequency it works on is 30Hz – 3.5 KHz and
voltage rating of 40V – 48V
• 2g : 900MHz - 1800 MHz
• 3g : 1800 MHz – 2100MHz
FAULTS
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Noise or disturbance
Temporary out of order
Interference
Line busy
False calling
Ring Problem
FAULT DETECTION
• Various ways of fault detection
• The most important is cable fault detection
using MEGGER
TRANSMISSION MEDIA
• Optical fibre (of 6 pair used earlier, now
combination of 20 is used)
• Earlier: Insulation coating of paper
Now: Insulation coating of PVC
PAIR COMBINATION OF
TRANSMISSION CABLE
1-5
10-15
Blue-white
Blue-black
Orange-white
Orange-black
Green-white
Green-black
Brown-white
Brown-black
Slate- white
Slate - black
5-10
15-20
Blue-red
Blue-blue
Orange-red
Orange-blue
Green-red
Green-blue
Brown-red
Brown-blue
Slate-red
Slate-blue
POSTAL SECTION (DAAK)
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Receiving and sending
Both official and residential
Update records in file and online
Special rechargeable machine for postal
stamps
UPDATION AND BILLING
SECTION
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Call records
Updating the opening and closing of numbers
Co-ordination with finance department
Co-ordination with BSNL for the record of calls
going out of BHEL premises
• Updating (file) of MDF chrome section
manually on daily basis
• Updating numbers in use and not in use.
CONCLUSION
• The communication was made possible by the
equipments and the details of the same were
also done.
• Learnt about the proper functioning of
communication division of BHEL, Bhopal (M.P.)