1 SUPPLEMENTARY TECHNICAL INFORMATION
1.1
General
The Technical Data Sheets provided in this Chapter and listed below are provided for
the purpose of detailing specific Plant technical criteria complimenting the Bid
Information in prior Chapters, Bid submission and Bid Evaluation. They shall be
submitted completed with the Bid submission to the criteria stated in Section IV Bid
Forms “Plant”.
1.2
Technical Data Sheets
SCHEDULE 1: DESIGN - TEMPERATURE LIMITS and WIND LOAD PRESSURES
(Chapter 3.6 refer)
Item
1.
2.
Description
Temperatures
a) Minimum temperature of conductors, and optical
groundwire (OPGW)
Minimum Factor
5⁰C
b) Maximum temperature of conductors, (continuous
loading)
80⁰C
c) Maximum temperature of conductors (fault
conditions)
200⁰C
d) Everyday temperature of conductors, and OPGW
30⁰C
Wind Load Pressures
a) Wind pressure on projected area of conductors,
and OPGW
b)
Wind pressure on projected area insulator sets
c) Wind pressure on 1.5 of projected flat surfaces of
tower steel members of any one tower face
920N/m²
1275N/m²
3025/Nm²
SCHEDULE 2: DESIGN - FACTORS OF SAFETY
(Chapter 4.1 andSub-chapters 5.1.1;5.1.3; 5.1.4; 6.2; refer).
Item
1.
2.
3.
4.
Description
Conductors, Earthwire& Optical Fibre Earthwire
a) Conductors, earthwire and optical fibre earthwire
at final maximum working tension based on
ultimate nominal breaking load.
Minimum Factor
3.0
b) Conductors, earthwire and optical fibre earthwire
at still air everyday temperature final tension
based on ultimate nominal breaking load
5.0
c) Tension clamps and mid-span joints based on
conductors, earthwire and optical fibre earthwire
ultimate nominal breaking load.
0.95
Insulators and Fittings (based on failing load)
a) under normal working conditions
d) under broken string conditions
3.0
3.0
Towers
a) Steel towers under normal working conditions
b) Steel towers under broken wire conditions
c) Steel towers under maintenance conditions
2.0
1.25
1.25
Foundations
a) Foundations under normal working conditions
b) Foundations under broken wire conditions
c) Foundations under maintenance conditions
d) Factor Fo against overturning/uprooting
2.5
1.25
1.25
1.2
Note: The broken string condition is defined as the breakage of an insulator string of a double
insulator set.
SCHEDULE 3: DESIGN – CONDUCTOR CLEARANCES TO GROUND
(Sub-chapter 4.2.5 refers)
The following are the minimum vertical clearances are to be ensured from the line
conductors at maximum sag (inclusive of 0.3m included in sag calculations to
accommodate conductor creep) to ground level or objects and crossings at described.
a)
b)
c)
d)
Above terrain in general, including minor roads/tracks
Above main (paved) roads
Above secondary (unpaved) roads
Above railways
e)
Above steep or swampy ground, inaccessible to
vehicles < 3.0m, and above water at maximum flood
level, except navigable rivers
f) Above any structure or objects buildings normally
accessible to persons or not normally accessible to
person but on which a person can stand
g) Above trees
7.1m
8.1m
7.5m
8.5m
5.5
5.0 m
3.8
Following minimum horizontal clearances are to be ensured between the line conductors
at maximum sag, and any direction (other than vertical) to the line:
h) Any structure or objects buildings normally accessible to
persons or not normally accessible to person but on
which a person can stand
i) Trees
3.0 m
3.8 m
SCHEDULE 4: DESIGN - PROPERTIES OF SOILS and CONCRETE
(Sub-chapter 5.1.4 refers)
For Bidding purposes, the design of foundations shall follow the assumptions set out in the table
given below:
Poor
Soil
Soft
Rock
Hard
Rock
Water
Logged
Ground
Normal Foundations
Units
Good
Soil
Assumed Mass of Earth for
Foundations
kg/m³
1600
1450
1600
1600
1000
Assumed Mass of Rock for
Foundations
kg/m³
-
-
1900
2000
-
Assumed Mass of Concrete for
Foundations
kg/m³
2300
2300
2300
2300
1300
Assumed Ultimate Bearing
Capacity for Foundations Under
Specified Maximum Ultimate
Loading, including Factor of Safety
t/ m²
30
15
60
100
15
Ultimate shear stress in rock
t/ m²
-
-
3.0
7.5
-
-
30º
15º
-
-
15
Ultimate Plain Concrete Bearing
Stress
kg/cm²
60
60
60
60
60
Ultimate Adhesion Value between
Galvanized Steel and Concrete,
including Factor of Safety
kg/cm²
10.0
10.0
10.0
10.0
10.0
50%
50%
50%
100%
50%
Assumed Angle to vertical of
Frustum of Earth Resisting Uplift
(Angle of Repose).
Minimum Portion of Stub Loads to
be considered in the Design of
Cleats
The soil parameters given above shall be confirmed or modified as per the findings of geotechnical investigations to be carried out by the Contractor as specified.
SCHEDULE 5: DESIGN – TOWER REQUIREMENTS
(Chapter 4 in its entirety refers)
Item
Description
Unit
Data
1.
Number of circuits
-
1
2.
Phase arrangement
-
Triangular
3.
Type of structure
-
steel lattice
4.
Ground clearance
-
Technical Data Schedule 3
refers
5.
Clearances between live metal and
earthed metal
-
Specification
Sub-chapter 4.3.5 refers
6.
Number of earthing including OPGW
-
1
7.
Earthwire shielding angle
degrees
25⁰
8.
Wind speed for dimensioning the towers
m/s
45
9.
Loads and loading assumptions
-
Specification
Sub-chapter 4.2.6 refers
10.
Tower dimensioning method
-
Overload/Factors of Safety
ultimate stresses
11.
Overload/Factors of Safety:
-normal working conditions
-broken wire and maintenance conditions
-
2.0
1.25
12.
Steel quality: ( compliant with EN
10025:1990; A1:1993 or equivalent, per
EN-50341-3-4:2001
13.
Slenderness Ration: Maximum ratio of
unsupported length of steel compression
members to their least radius of gyration
(L/R):
S 235 J0 and S 355 J0 and
S355JR
-Leg/Main members
-
120
-Other members/bracings
-
200
-Redundant members
-
250
-Members loaded in tension only
-
350
SCHEDULE 6: CONDUCTOR CHARACTERISTICS
(Required and Offered) This schedule requires completion of all data or such may be
considered a material omission and the bid may be rejected as per General Terms Clause 30.
Item
Description
Unit
Conductor
Requirements
1
Type/Code Name
-
ACSR
“LYNX”
2
Standards
-
IEC 61082 and BS
215Part 2
3
Cross-section (Al/St)
sq.mm
183.4/42.79
4
Overall diameter
mm
19.53
5
Stranding and wire diameter
-aluminium
-steel
number/mm
number/mm
30/2.79
7/2.79
-
Right-hand lay
kN
80
kN/sq.mm
80
1/C
17.8x10-6
1.576
6
Lay for conductor strands
7
Nominal (calculated)
breaking load
8
Equivalent modulus of
elasticity (final)
9
Equivalent coefficient of
linear expansion
10
Resistivity of aluminium by
+20C and direct current
ohm x cm
x 10-6
11
Short-circuit current rating
for 1 sec.
kA
12
Greased conductor
14
-
Yes, except the
outerlayer
Minimum drop-point
temperature of grease
C
120
15
Standard delivery length per
drum
m
-
16
Weight of complete drum
plus conductor
kg
-
17
Drum Construction
- steel
- timber
ea.
-
Offered by
Bidder
SCHEDULE 7: OPGW CHARACTERISTICS
(Required and Offered) This schedule requires completion of all data or such may be
considered a material omission and the bid may be rejected as per General Terms Clause 30.
Item
Description
Unit
OPGW
Requirements
Ea.
48
-
Single Mode
mm/mm²
9.5mm/55mm²
-
ACS or GS strand
over stainless steel
tube
kg/m
-
1
No of Fibre Core
2
Fibre Type
3
Nominal Diameter/Cross-section
4
Construction
5
Unit weight
6
Standard delivery length per
drum
m
≥2000
7
Weight of complete drum with
OPGW
kg
-
8
Drum Construction
- steel
- timber
ea.
-
9
Nominal (calculated) breaking
load
10
Short time current rating, for
temperature range 5⁰C to 160⁰C
11
DC Resistance
12
Transmission wavelength
nm
1310nm and
1550nm
13
Mode field diameter
µm
9.0 to 11.5
14
Optical cladding diameter
µm
125 µm ±2.4%
14
Cable attenuation
dB/km per
fibre
≤0.1dB@1310nm
and ≤0.2dB@
1550nm
16
Total Dispersion
ps/km.nm
≤3.5ps/km.nm@131
0nm and
≤19.0ps/km.nm@15
50nm
17
Core numerical aperture
-
<0.23
18
Life Span
-
>50 years
Offered by
Bidder
kN
kA2s
496
Ohms/km@2
0⁰C
Notes:
1) If the 48 fibres can be accommodated in only one tube providing full compliance with
reliability requirements, this alternative is preferred.
2) Bidders shall supply a drawing showing the cross-section of the OPGW with all
components labelled as well as the customer supply list for similar OPGW.
SCHEDULE 8: LONG ROD SILICON RUBBER INSULATOR SETS and FITTINGS’
CHARACTERISTICS
(Required and Offered)This schedule requires completion of all data or such may be
considered a material omission and the bid may be rejected as per General Terms Clause 30.
Item
Description
Suspension/Tension
Units’ Requirements
1
Long rod maximum system voltage
2
Long rod pollution category
3
Long rod dielectric
4
Long rod One-minute power
frequency withstand voltage, 50 Hz,
wet. (kV)
275
5
Long rod Lighting impulse withstand
voltage, 1,2/50 pos. (kV)
650
6
Long rod power arc current
7
Long rod minimum creepage distance
(mm)
8
Long rod specified mechanical load,
tension (kN)
145kV
Medium Category II
Silicon rubber
25 kA, 0.5 sec
3700
Suspension
Tension
70
100
9
Long rod minimum arc gap (mm)
10
Long rod material fittings
Steel h.d.g
11
Long rod material of rod
E- CR Glass
12
Long rod material of housing and
sheds
HTV- Silicone
13
Long rod socket
IEC 60120/16
14
Long rod ball
IEC 60120/16
15
Fittings:
Suspension
Tension
Al alloy
Al Alloy
-
-
Material of Clamp/DE assembly
15(b)
Length of clamp/DE assembly; mm
15(c)
Arcing device material
Steel h.d.g
15(d)
Arcing devices
IEC 61284
15(e)
Vibration damper type
Stockbridge
15(f)
Distance from mouth of Suspension
clamp or tension/dead-end assembly
to vibration damper in mm
Distance to/between subsequent
vibration damper
Suspension
Tension
Suspension
Tension
Suspension
Tension
Suspension
Tension
1250
15(a)
15(g)
Offered
-
-
SCHEDULE 9: OPGW HARDWARE and FITTINGS CHARATERISTICS
(Offered)This schedule requires completion of all data or such may be considered a material
omission and the bid may be rejected as per General Terms Clause 30
Item
Description
OPGW
Hardware/Fittings
Requirements
1
Splicing tension assembly for
suspension tower
-
2
Tower bond clamps for suspension
/tension assembly use
-
3
Pre-form armour rod for splicing
tension assembly for
suspension/tension tower and
vibration damper* use
-
4
Suspension assembly with twisted
link for suspension tower
-
5
Suspension assembly with twisted
link for suspension tower
-
6
Tension double dead-end set for
splicing OPGW
-
8
Tension single dead-end set for
termination of OPGW
-
9
OPGW vibration damper
*Stockbridge type
10
Optical splice kit
-
11
Junction boxes for optical splices &
run-interface (overhead to
underground at gantries)
-
OPGW
Hardware/Fittings
Offered
SCHEDULE 10: TOWER AND FOUNDATION CHARACTERISTICS
(Offered)This schedule requires completion of all data or such may be considered a material
omission and the bid may be rejected as per General Terms Clause 30.
132kV Single circuit towers with
ACSR ‘LYNX’ single phase
conductor
Tower Designation
NS
LA/HS
MA
D
VH/DE
Height of lowest conductor above
ground at support, m
Vertical distance between adjacent
phase conductors, m
Vertical spacing between earth
conductor and top conductor, m
Total height of tower above ground, m
Width of tower body at attachment
level of bottom cross arm, m
Horizontal distance of insulator
attachment from tower center line for:
a) Top cross arm, m
b) Middle cross arm, m
c) Bottom cross arm, m
Overall tower base dimensions at
ground level:
a) Transverse to line, m
b) Parallel to line, m
Mass of complete tower steel work
(using concrete block/pad & chimney
foundations), t
Extra mass of steel for:
a) +3m body extension, t
b) +6m body extension, t
Ultimate compression load per leg
(max), kg
Ultimate tension load per leg (max),
kg
Volume of foundation concrete per
tower for:
a) Good soil, m3
b) Poor soil, m3
c) Soft rock, m3
d) Hard rock, m3
e) Water-logged ground, m3
SCHEDULE 11: GUARANTEED CHARACTERISTICS
This schedule requires completion of all data or such may be considered a material omission
and the bid may be rejected as per General Terms Clause 30.
1.
CONDUCTORS
Code Name:
ACSR 'LYNX'
Rated/ultimate tensile strength
(RTS/UTS), kg
DC Resistance, ohms/km @20º C
2.
OPGW
Breaking load, kg
DC Resistance, ohms/km @20º C
Optical fibre :
 Transmission wavelength nm
 Cable attenuation dB/km.nm
 Total Dispersion ps/km.nm
3.
LONG ROD INSULATOR SET
Silicon Rubber Type Long Rod
Insulators
Suspension
use
Jumper Pilot
Suspension
use
Tension use
Minimum Failing Load for Complete Set,
kN
Positive Wave Impulse Withstand Voltage
for Complete Set, kV
4.
TOWER STEEL
Use/Category
Main (leg) members
All redundant member bracing
All tension members bracing
5.
TOWER FASTENERS
Tower bolts Tensile strength for each
diameter to be provided from minimum
12mm through 24mm duly noting the
specified requirementsof Sub-chapter
4.2.10, Connections
Steel Grade
Yield
SCHEDULE 12: MANUFACTURERS, PLACES OF MANUFACTURE, TESTING AND
INSPECTION
This schedule requires completion of all data or such may be considered a material omission
and the bid may be rejected as per General Terms Clause 30.
Item
Line Conductor:
Aluminium Wires
Steel Wires
Stranding Steel wires
Stranding complete
conductor
OPGW
Suspension long-rod
insulators
Tension long rod
Insulators
Suspension Insulator
hardware
Tension Insulator
hardware
Suspension clamps conductor
Tension/dead-end
assemblies - Conductor
Mid span Joints –
Conductor
Vibration dampers –
conductor
Armor rods - conductor
Long rod insulator sets’
Electrical Test
Laboratory/Type Test
OPGW hardware/fittings
OPGW optical jointing &
termination kits
Steel Towers
Steel Sections
Fabrication
Manufacturer
Place of Manufacture/Inspection
Galvanizing
Fasteners