Plcc Job Aids 21.1.14
description
Transcript of Plcc Job Aids 21.1.14
MSETCL RTC PADGHE BATCH (21.1.2014)
POWER LINE CARRIER COMMUNICATION
Job aids (Basic Course)
For Restricted circulation only
Guided By
Shashank S.Jewalikar
SE TCC MSETCL Aurangabad
PLCC training material designed for MSETCL Engineers This course provides the information
required to confidently understand & assess the quality of PLCC network.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
Index
Sr No Job Aid Page No
1 PLCC Introduction 3
2 Wave Trap 7
3 CC/CVT 13
4 LMU 17
5 Coaxial cable 23
6 PLCC Panel (ETL & 9505 V3) 25
7 Protection coupler(NSD 50 & DC 42) 31
8 PLCC Data MODEM (NSK 5) 37
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -1
Name of Trainee –
Batch –
1.1 Title: Identification of Power line carrier communication Indoor & Outdoor equipment and their
applications.
1.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
a. Identify PLCC Indoor & Outdoor equipment.
b. Understand application of PLCC equipment.
1.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
1.4 Set up/ Equipment Required:
Wave Trap/ Line Trap
Coupling Capacitor(CC)/ CVT
Line Matching Units (LMU A & B Unit)
HF cable
Power Line Carrier Terminal ( ABB/BPL) with Protection coupler & PLCC Data MODEM
48 V Supply
Electronic Programmable Automatic Exchange (EPAX)
1.5 Exercise:
1.5.1. Study the PLCC diagram.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
1.5.2 Identify the different Outdoor Equipment of Power Line Carrier Communication (PLCC) System &
their uses.
Equipment / Cable
Name of Equipment/
Cable
Use
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
1.5.3 Identify the different Indoor Equipment of Power Line Carrier Communication (PLCC) System &
their uses.
Equipment
Name of Equipment
Use
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
1.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
1.7 Self - Assessment :
1 The Power line carrier communication is a technology which uses ------------------------------ as
physical media for Speech, data & Protection signal transmission.
2. In PLCC power line conductors are used for ----------------------- instead of separate telephone
lines.
3. Power utility operators communicate with each other to -------------------------------------------- &
exchange all kinds of operational information.
4. PLCC provides very limited --------------------- & is not suitable where the requirement of Voice &
Data channels is large.
5. The R.F. range in PLCC system is ------KHz to -------------KHz.
(Power line, Communication, co ordinate actions, Bandwidth, 50 to 500 KHz, )
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -2
Name of Trainee –
Batch –
2.1Title: Wave trap or Line trap
2.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
c. Identify different parts of Wave trap & their functions.
d. Select blocking band of wave trap.
2.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
2.4 Set up/ Equipment Required:
Wave Trap/ Line Trap Main Coil
Tuning pot
LA
2.5 Exercise:
2.5.1. Identify Main coil, tuning pot & LA in following diagram.
.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
2.5.2 Study the following figure & identify Tuning pot, LA & Main Coil.
2.5.3 Write down the function of Tuning pot, LA & Main Coil.
Main Parts of Line trap
Use
Main Coil
Tuning Pot
LA
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
2.5.4 Select Blocking band of Wave trap
BPL Make Wave Trap
PLCC Frequency Band Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KHz
W.S. Make Wave Trap
PLCC Frequency Band Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KH
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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ALSTOM / AREVA Make Wave trap
PLCC Frequency Band
Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KH
GYRO Make Wave trap
PLCC Frequency Band
Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KH
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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2.5.5 Study Pedestal wave trap with insulator & structure.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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2.5.6 List of routine tests (as per IEC 60353)
1. Measurement of blocking impedance of line trap.
2. Power frequency voltage withstand dry test on tuning device 8.17 KV rms for 5 seconds.
3. Measurement of rated inductance of main coil.
4. Measurement of power frequency inductance of main coil.
5. Dimensional checks.
2.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
2.7 Self - Assessment :
1. Wave trap is connected in ------------------ to the line in switch yard.
2. --------------------- Frequency signals are blocked by wave trap entering into switch yard.
3. The rated inductance of main coil for 220 KV Wave Trap is -------------------------.
4. In wave trap Main coil, LA & tuning devices are --------------- connected to each other.
(Series, carrier, 0.5 milli Henry, Shunt)
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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JOB AID -3
Name of Trainee –
Batch –
3.1Title: Coupling Capacitor or CVT
3.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
e. Identify different parts of CC/CVT.
f. Connection of CC/CVT to LMU
3.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
3.4 Set up/ Equipment Required:
CC
CVT
Single insulated lead in wire
3.5 Exercise:
3.5.1. Label the parts of coupling capacitor
1. Primary Terminal
2. Expansion system
3. Capacitor elements
4. Rating voltage
5. Low voltage terminal
6. Support insulator.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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3.5.2 Study different parts of CGL , ABB & Alstom Make CC
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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3.5.3 Study different parts of CVT.
1. High Voltage Terminal
2. Compensation reactor
3. Intermediate Voltage transformer
4. Ground terminal
5. Ferro resonance suppression device
6. Damping resistor
7. Carrier (HF) terminal
8. Overvoltage Protective device
9. Secondary terminals
10. Link to be opened for test purposes.
3.5.4 Locate HF Point in CVT
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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3.5.5 List of Routine tests as per IEC 60358.
1. Capacitance & tangent of the loss angle before the voltage test.
2. A.C. Voltage test (Dry) between Terminals.
3. Partial discharge test.
4. Capacitance & tangent of the loss angle after Voltage test.
5. Power frequency test on the Earth terminals.
6. Sealing test.
7. Dimensional checks
3.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
3.7 Self - Assessment :
1. ----------------------------- offers the isolation between high voltage line and carrier equipments.
2. Coupling capacitor offers ----------------------------- impedance to carrier frequencies.
3. CVT consists of coupling capacitor and ----------------------------------------------------------.
4. Coupling capacitor in CVT is used for -----------------------------------------------------------.
(Coupling Capacitor, Low, Voltage transformer, carrier communication)
Page 17 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID - 4
Name of Trainee –
Batch –
4.1Title: Line Matching Unit, 3 element Protection device & Coaxial cable
4.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
g. Identify different parts of LMU & 3 element protection device
h. Select Pass band of LMU
i. Connect CC/CVT to LMU by single Insulated lead in conductor
j. Connect Main HF & HF loop
k. Prepare End connector of HF cable.
4.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
4.4 Set up/ Equipment Required:
LMU with 3 element protection device
Single insulated lead in wire
HF cable
4.5 Exercise:
4.5.1. Demonstration by faculty.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.2 Identify different parts of LMU.A & B unit.
4.5.3 Write down the function of each.
Name of Part Function
Balancing Transformer
Matching Transformer
Filter
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.4 List down the 3 elements of Protection device with their use.
Name of Element
Function
4.5.5 Select Pass band of LMU
BPL Make Line Matching Unit
PLCC
Frequency
Band
Selection
1. Band I (35 – 50 KHz)
2. Band II (50 – 90 KHz)
3. Band III (90 – 500 KHz)
96/92 U
KHz
104/112 UL
KHz
148/152 U
KHz
488/480 UL
KHz
72/76 U
KH
Page 20 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.6 What is the purpose of Single insulated lead in wire in PLCC system & where it is connected?
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
.4.5.7 Study CC to LMU connection in case of BPL Make LMU & ABB Make Coupling device.
.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.8 Acceptance Tests for Coupling device
1. Composite loss
2. Return loss
3. HV test on Transformers
4. Inductance of Drainage coil.
5. PF Spark Over Voltage Test on Lightning arrestor
6. Operation check on earth switch
7. Dimensional checks
8. Visual & General Arrangements
4.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
4.7 Self - Assessment :
1. To match the impedance between power line & carrier terminal ---------------------------- is used.
2. LMU consists of Balancing transformer, Matching transformer and --------------------.
3. To connect Coupling capacitor to LMU---------------------------------------------- is used.
4. The PLC Terminal is connected to LMU in switch yard by means of --------------.
5. Three element protection device consists of Drainage coil, LA & --------------------.
6. Earth switch in Protection device is --------------- during maintenance.
(LMU, filter, Single insulated lead in wire, HF cable, earth switch, closed)
Page 23 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -5
Name of Trainee –
Batch –
5.1 Title: Co axial cable
5.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
l. Identify Coaxial cable
m. Connection of HF Coaxial cable
5.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
5.4 Set up/ Equipment Required:
HF Coaxial cable
Soldering gun with metal
HF End connectors
AC supply
5.5 Exercise:
5.5.1. Name the different parts of HF cable
(Copper center conductor, Insulator, copper/ Aluminium mesh, Protective outside cover)
Page 24 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
5.5.2 Explain the procedure for connecting Cable connector plugs to HF Coaxial cable.
Instructions for connecting cable connector plugs to HF coaxial cable
1. Cut off the coaxial cable somewhat longer than needed (according to local conditions) leaving
enough slack to make a loop when connecting the cable.
2. Loosen the screw and take the plug to pieces.
3. Put the cone and threaded cylinder over the cable.
4. Remove PVC covering and copper braiding for a length of 20 mm(4/5inch)
5. Cut off PVC covering for an additional length of 6 mm( 1/4inch)
6. Slightly spring open the slit section of the plug interior.
7. Push the cable into the spring opening of the above part.
8. Draw the copper braiding through the two holes in the plug interior piece and solder it to the
outside of the plug interior piece.
9. Solder the cable conductor to the plug pin and cut off the part which protrudes.( Do not heat the
pin too long because of the polyethylene insulation)
10. Slide the threaded cylinder and the cone back into position and tighten the screw.
11. Test cable for continuity and short circuit.
12. Fasten the cable beneath the connector plug by means of bracket clip so that the plug is not
subjected to any tension
5.5.3 Demonstration of preparation of HF cable connector by faculty.
5.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
5.7 Self - Assessment :
1. PLCC terminal is connected to LMU, in switch yard by means of ---------------------.
2. Coaxial cable is a --------- conductor cable made of a single conductor surrounded by a braided
wired jacket with a plastic insulating material separating the two.
3. The coaxial cable provides ------------- so that noise cannot get into the cable & cause
interference..
4. The characteristic impedance of the coaxial cable is either ---------or ------------ohms
(Co axial cable, two, Shielding, 75 or 125)
Page 25 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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JOB AID -6
Name of Trainee –
Batch –
6.1Title: Power Line Carrier Communication (PLCC) Panel/ Terminal/Cabinet/Set
6.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
n. Identify PLCC Panel (Make, Type, Single/ Twin Channel)
o. Identify different Modules/prints & their function.
p. Select frequency
6.3Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
6.4 Set up/ Equipment Required:
ABB Make ETL 41/42 Panel with Protection coupler & NSK 5
BPL Make V3 Panel with DC 42 Protection coupler
6.5Exercise:
6.5.1. Demonstration by Faculty.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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6.5.2Identify and locate the different cards available in ABB Make ETL PLCC panel
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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Name of Card
Function
Indications/ Test points
B5LA
Power Supply Unit
48 V DC
E5LA
E5LB
Tx Filter ( 100-500 KHz)
Tx Filter (24-100 KHz)
P3LB
RF Hybrid
P3LK
Dummy Load
B4LA
48 V DC to DC converter
G4AA
DSP Card
G4AC
Relay Interface 1
G4AC
Relay Interface 2
NSK 5
PLCC Data MODEM
O4LA
Data Interface
O4LC
Speech Interface
P4LA
Pilot & supervision
P4LB
AF Converter
P4LC
IF Converter
P4LD
Rx RF Converter
P4LF
Tx RF Converter
P4LG Carrier Generator
P4LE
Rx RF Converter Ch 1 & 2
P4LI
Carrier Generator
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
6.5.3 Write down the function of different cards of BPL Make 9505 V3 Panel.
Module
Name of Module
Function
95 AMP
95 PLF
95 PSU
95 MEMRI
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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Module
Name of Module
Function
95 SPIN
95 MODEM
95 DATA
95 LINT
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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6.5.4Compare performance of ABB Make ETL & BPL Make 9595 V3 PLCC panel
Sr
No
Feature BPL Make 9505 V3 PLCC panel ABB Make ETL PLCC Panel
1 Pilot frequency
programming
3 AF Pilot can be selected. After changing
pilot, FSK tuning is required
5 AF pilot can be selected easily.
2 Loop test In some PLCT LTM feature does not
respond i.e. standalone testing not possible in
some link.
Stand alone testing possible.
3 RLB In some PLCTs, RLB getting ON
automatically in spite of RLB switch in OFF
position, which create problem in speech.
It does not operate unless & until
made ON.
4 Module failure rate High. Very low
5 95 MODEM As it includes lot of function gives problem
in alignment when PLCT frequency is to be
changed
There are different modules for
different functions, Easy to tuned
for new frequency on field,
6.6Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
6.7Self - Assessment :
1. ------------------- Modulation is used in PLCC system to modulate AF signals.
2. Modulation & Demodulation requires ---------------- frequency which is generated in PLCC panel.
3. The frequency band for Single side band transmission in PLCC system is ---------------KHz.
4. Speech, data, Pilot/Dial & protection signals are connected to PLCC terminal in ------------
section.
5. ------------- Signal transmitted from station A, controls the AGC of the receiver of station B and
vice versa.
6. PLCC Terminals are used as a -----------, one at each end of the power line between substations.
7. Each PLCC Terminal is designated for a set of ---------- & -------------- frequencies. These
frequencies may be adjacent or separate. The corresponding PLCC terminal at the other end will
be designated for the ------------ value of the transmission & reception frequencies.
8. The channel frequency will be either ----KHz or ----KHz bandwidth depending upon S.C or T.C.
(Amplitude, Carrier, 4, AF, Pilot, Pair, Tx, Rx, reverse, 4, 8,)
Page 31 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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JOB AID -7
Name of Trainee –
Batch –
7.1Title: Protection coupler
7.2Objective: On completion of this visit / Practical exercise, the trainee will be able to :
q. Identify different cards of Protection coupler
r. Understand switch setting in protection coupler
s. Connect relay to Protection to coupler
7.3Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
7.4Set up/ Equipment Required:
ABB Make NSD 50 Protection coupler
BPL Make DC 42 Protection coupler
7.5Exercise:
7.5.1. Demonstration of NSD 50 & DC 42 by faculty.
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
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7.5.2 Study different cards of NSD 50
Slot No Name of Card (NSD 50) Function
G4AA
G4AC 1
G4AC 2
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7.5.3 Study different cards of DC 42
DC
PSU
DC
COMIO I
DC CPU
DC
COMIO II
DC
REC
Slot
Name of Card DC 42
Function
DC PSU
Provides dual 12 V DC output & 5 V DC output.
DC COMIO I &
DC COMIO II
It consists of DC CIC & DC COC
DC CIC provides interface between relay & coupler
DC COC provides interface for transferring trip command from
coupler to relay.
DC CPU
Provides the commands necessary to generate the Guard & trip
frequencies.
DC REC
Responsible for transmitting the frequency corresponding to
command issued by DC CPU as well detecting the trip
frequency and issuing corresponding trip command to DC CPU
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7.5.4 By referring fig. complete the following table
Sr No Purpose of Wire PLCC side ferrules ABB NSD 50 BPL DC 42
1 Negative Protection DC X302-1 TC 1
2 Carrier Send X302-2 TC7
3 Carrier Receive X302- 5 TE2 CR
TE1 CR Positive
4 Positive Protection DC X302-6 TC 10
5 Carrier fail/ healthy X301-5 TB 1/ TB 3
6 Positive protection DC X301-6 TB2
Relay Panel Protection coupler
Opto coupler
Solid state
Contact
Alarm Contact
Trip Send Contact in RP
Carrier Receive Relay in RP
Carrier Healthy relay in RP
85X
30X
RP K102
RP K877
RP K173
RP K169
RP K161
RP K169
Distance
Relay 21
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K 173
K 161
K 169
K 169
K 102
K 877
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7.5.5 Compare performance of ABB Make NSD 50 & BPL Make DC 42 Protection coupler
Sr
No
Feature BPL Make DC 42 Protection coupler ABB Make NSD 50 Protection
coupler
1 Command Input Provisions for 4 commands out of which first
2 are uncoded & remaining 2 coded.
For 1 coded & 1 uncoded we need two
interfaces.
Provisions of 4 commands .anyone
can be made coded & uncoded.
For 1 coded & 1 uncoded we need
only one interface.
2 Loop test Manual loop testing is not possible where
LTM feature not working.
Automatic –not available.
Manual loop testing is possible in
all PLCT.
Automatic –available.
3 Command received False received of all command in some
couplers without transmission from other
end.
False command not observed.
4 Module failure rate High failure rate of all modules Very less
5 Hardware engg. Module fixing is not proper .
Big TB are provided for com. 1 to 4 which
make PLCT congested from inside.
There is no problem in insertion of
modules.
Terminal provided is in order.
7.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
……………………………………………………………………………………………………
7.6 Self - Assessment :
1. The carrier aided protection schemes are provided to EHV lines for simultaneous tripping of -----
------------------------------------------- at both the ends.
2. While transmitting the -------------------------- signals, other signals such as speech, data &
pilot/dial are disconnected momentarily in the PLCC equipment.
3. Percentage of power in PLCC equipment for transmission of trip command signals is ------ %
(circuit breakers, trip command, 100 )
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Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -8
Name of Trainee –
Batch –
8.1Title: PLCC Data Modem NSK 5
8.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
t. Identify PLCC Data Modem NSK 5
u. Understand switch & Jumper settings of NSK 5
v. Test & trouble shoot NSK 5
8.3Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
8.4Set up/ Equipment Required:
NSK 5
ABB Make ETL 41/42 Panel
Level meter, level Oscillator & Multi meter.
LATOP /PC
Cables
8.5Exercise:
8.5.1. Demonstration by Faculty.
Page 38 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
8.5.2Identify and locate the different switches & Jumpers available in NSK 5
NSK 5( Switches/Jumpers) Function
Switch S1
Switch S2
Switch S3
CA,CB,CC,CD,CE,CF
AH,AF
AA,AB
Page 39 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
8.5.3 Study the different Switch & Jumper settings of NSK 5 for 405,406,407,601 & Remote SCADA
Data
Channel
Baud
speed
BW
Center
frequency
±Fs
Setting of S1 Setting of S2
Baud Transmit Frequency Rx Sensitivity Receive Frequency
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
405 200 Baud,
480 Hz,
2520±120
Hz
Off On On On Off Off Off On Off On On On Off Off Off On
406 200 Baud,
480 Hz,
3000±120
Hz
Off On On On Off On Off On Off On On On Off On Off On
407 200 Baud,
480 Hz,
3480±120
Hz
Off On On On On Off Off On Off On On On On Off Off On
601/
602
600 Baud,
960 Hz,
2760±240
Hz
On Off On On Off Off Off On On Off On On Off Off Off On
Remote
SCADA
1200
Baud,
1640 Hz,
2860±400
Hz
On On Off On Off Off On Off Off Off On Off Off Off Off On
Page 40 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
8.5.4 Study Tx level & Rx sensitivity settings for different baud rates.
Baud rate, BW, Fs Switch S1
Baud rate
Relative
Tx level
setting
(dBm0)
Actual
measured
Tx level
G4AE,P4LB
Receive
Sensitivity
settings
(dBu)
Switch S2
Rx Sensitivity
Required
equalization
filter
1 2 3 1 2 3
50Bd
120Hz, ±30 Hz
Off Off Off -14
CD
-24 -39 On Off On None
100 Bd
240 Hz±60 Hz
Off Off On -11
CC
-21 -36 On Off Off None
200 Bd
360 Hz±90 Hz
Off On Off -8
CB
-18 -33 Off On On None
200 Bd
480 Hz±120 Hz
Off On On
300 Bd
480 Hz,±120 Hz
On Off Off -8
CB
-18 -33 Off On On None
600 Bd
960 Hz±240 Hz
On Off On -3
CF
-13 -27 Off Off On None
1200 V.23
On On Off 0
CF
-10 -24 Off Off Off None
1200 + sp
On On Off -3
CF
-13 -27 Off Off On Set
automatically
2400 Bd,
On On On 0
CF
-10 -24 Off Off Off 2400 Bd ETL
Page 41 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
8.5.5. Connect NSK 5(G4AE card) to LAPTOP/PC through 25 Pin connector & Explain procedure of
transmission & Reception through Hyper terminal. Write down different steps to start Hyperterminal.
Steps to start Hyper terminal
1. Click on Start button
2. Click on All programs
3. Click on Accessories
4. Click on Communications
5. Click on Hyper terminal link
6. Hyperterminal window will appear
Enter the Name – (for e.g. PLCC)
Click OK button
7. Then “connect to” window will appear
a) Select “connect using “option – Respective COM port
b) Select COM port – Right click on “My computer” icon, click on “properties”, click on
“Hardware”, click on “Device Manager”, click on Ports option
Check on which COM port USB to serial cab le is connected. Select that particular COM port
in the “Connect using List box”
c) Click on “OK”button.
8. Then COM port properties window will appear in that enter
i) Bits per second – 1200
ii) Flow control- X on/X Off
9. Click on “OK” button
After all the above steps Data flow can be checked through hyper terminals.
Page 42 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
8.6Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
8.7Self - Assessment :
1.The NSK 5 is a new, fully programmable ------------------------------------------------ (FSK) modem
for data transmission over voice grad telecommunication channel.
2.The NSK 5 modem has been designed using ----------------------------------------(DSP) technology.
3.The NSK 5 MODEM is available in two versions -------------------- & --------------------------. G4AF
modem includes main & standby line connections for the Tx & Rx. G4AE uses the same printed
circuit board as the G4AF but it does not include the standby lines.
4.DIL switch S2 allows the ------------------Sensitivity to be adjusted over a range of 21 dB.
5.The modem transmit level setting depends on the ------------------------. The transmit level of the
600 Bd to 2400 Bd can be set by jumpers. The level of the others needs to be set with the
potentiometer.
6.The line termination jumpers must be in positions ----- & --------- .
7.The NSK 5 modem has two special high speed channels that are optimized to work over the ETL
These are the 1200 Bd above speech & the ------------Bd channels.
8.When the modem is used for transmitting over an ETL link then the channel center frequency and
the -------------------- must be chosen so that it does not interfere with the ETL pilot, NSD 50
protection equipment or speech.
9. The NSK 5 Modem termination impedance can be set on ---------- ohm or a high impedance.
10. The -------- level is set using CA, CB, CC, CD, CE, CF jumpers.
(Frequency Shift Keying, Digital Signal Processing, G4AF,G4AE, receiver, Baudrate,
AH, AB,2400, baud rate, 600, transmit)