5.1 Technical Schedules for 220 Kv Lines: Lot 1B

5. Data Sheets

5.1 Technical Schedules for 220 kV lines: Lot 1b

Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
General
System highest voltage for equipment
/power frequency
Nominal voltage
Rated lightning impulse withstand voltage (peak)
• Rated switching impulse withstand voltage
• Rated short duration power frequency withstand voltage
System neutral
System highest 3-phase short-circuit current level (1s) Short circuit current for thermal stability check of the
OPGW (1s)
Specific insulation creepage distance based on system highest phase to phase voltage for equipment (245 kV) min.:
Radio noise limit for radio interference testing of insulator sets, fittings, etc. at voltages of
1.1 x 1.3 x Un
Corrosion protection measures:
• Hot-dip galvanizing for steel sections, fittings, etc
• Hot-dip galvanizing of bolts, nuts & washers
Conductors
OPGW/EW / kV/Hz kV
kV, peak kV
kV, r.m.s.
- kA kA
mm/kV
dB above
1 µV
µm
µm type
type / 245 / 50
220
1050
600
460
Solidly earthed
50
7
25, medium pollution
48
85
55
ACSR/Starling
AAC/ACS70 standard span AAC/ACS95 long span
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Design Temperatures
• Maximum ambient temperature
• Minimum conductor temperature
• Maximum conductor temperature
• Every day temperature
• Temperature with maximum wind
Reference wind speed VR at 30 m above ground
Design wind pressure at 0….30 m
Coefficient for multiplying wind pressure for line elements between 30 to 50 m
Moderate wind for calculation of insulator set swing simultaneous with switching overvoltages
Line Data
Number of circuits
Number of conductors per phase
Number of OPGWs
Total approximate length of lines
- Lot 1b
Tower Types
S (normal suspension)
Angle of deviation
Type of insulator sets / °C
°C
°C
°C
°C m/s N/m2
-
loading
quantity quantity quantity
km
angle composite / +40
-5
+80
+20
+10
45
1240
1.2
36% of maximum wind pressure
1 (Line 1b)
1
1
138.810
0o – 2°
“I” suspension
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
HS (heavy suspension)
Angle deviation
Type of insulator sets
LA (light angle) Angle of deviation Type of insulator sets
MA (medium angle) Angle of deviation Type of insulator sets
HA/DE (heavy angle/terminal)
Angle Deviation for HA Angle of deviation for DE: Line side
Substation side
Type of insulator sets / angle composite
angle composite
angle composite
angle
angle angle composite / 0 - 2°
“I” suspension
0° - 15o
tension
15° - 30o
tension
30°-60°
0°-20°
0°-45°
tension
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Minimum partial factors
Partial factors for load actions (γF )
For permanent actions (dead weight of conductors, OPGW, insulator sets, tower)
For variable actions (wind, conductor tension) in normal loading cases
For accidental actions in exceptional loading cases
For construction and maintenance loads
Partial factors for material strength (γM )
Structural steel sections, plates, etc for suspension towers
Bolts
Concrete
Reinforcing steel
Conductors and OPGW
under maximum load condition
Soil property at suspension towers
Soil property at angle towers
Insulators
Line fittings: Insulator set fittings
Joints and tension clamps / factor factor
factor factor
factor factor
factor factor
factor factor
factor factor
factor factor / 1.1 (when stress increasing) and 0,9 (when stress decreasing)
2.0
1.2
1.5
1.25
1.25
1.5
1.25
1.25
1.25
1.35
1.5
1.5
1.25
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Clearances
Minimum clearance between phase conductors
Minimum Vertical Clearances
Minimum vertical clearances from the line conductors at maximum sag to ground or for various crossings:
Normal ground
Ground in populated areas
Roads and streets
Grown trees
Residential or other buildings Power lines (above) Telecommunication lines Railways
Rivers (no ships)
Minimum Horizontal Clearance
Highway
Main roads
Angle of crossing highways, main roads and railways
Additional Requirements for the Vertical Clearances / m
m m m m m m m m m
m m (°) / 3
7.00
9.00
9.00
3.30
7.00
4.00
4.00
12.00
9.00
10
9
90 ± 30
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Clearance allowance to add to the specified minimum vertical clearance due to superimposed construction tolerances
Minimum horizontal clearances between the line conductors at maximum sag under calculated conductor swing and objects close to the line
Mid-span wire clearances
Mid-span phase to phase clearance for total phase arrangement
Mid-span phase to phase clearance for quasi-vertical phase arrangement
Mid-span phase to OPGW clearance for quasi-vertical wire phase arrangement
Minimum clearances between conductors/live fittings and tower steel structure:
Under still air for the phases of line
For suspension insulator set calculated swing under moderate wind (36% of maximum wind pressure)
jumper suspension sets and free jumpers under 25° swing
For suspension set maximum calculated swing suspension sets and free jumpers under 60°
Clearance condition for the OPGW
OPGW sag, compared to the conductor sag at 20° for the nominal span
OPGW shielding angle
Foundation and soil data
The reference concrete volume of the tower foundation shall be calculated taking into account:
All four footings per tower and soil class, horizontal terrain level, factored loads from max. tower body and leg extension, nominal volume excluding excess concrete, soil parameters as shown below and dimensional conditions as specified in the Technical Requirements, Foundation Design. / m m
m m m
m
m
- (°) / ≥ 0.40
4.50
c = 0,65 f max + li + 2.25
c = 0,85 f max + li + 2.25
c = 0.85 f max + li +b + 1.9
2.50
2.25
0.75
10% less
30
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Soil investigation
Penetration equipment in accordance with the characteristic data as specified in the Technical Requirements, Soil Investigations; If other types, specify characteristic data.
Foundation material
Concrete class (nominal cube strength ≥ 20 N/mm2)
according to
Reinforcing grade (ripped bars fy ≥ 420 N/mm2)
according to
Cement grade (standard Portland cement)
according to
Supporting documents
Outline drawing of each type of foundation
Foundation Class 1 – Hard Rock
Principal foundation category Ultimate bearing pressure Ultimate shear friction resistance Reinforced concrete density Homogeneous rock density Foundation anchor length Concrete reinforcing content
Reinforced concrete volume incl. anchor mortar S tower / type
class standard
grade standard
grade standard
-
type kN/m² kN/m²
kN/m3
kN/m3 m kg/m³
m³ / SPT or DPL or CPT or other
C16/20
EN 206-1
≥ BSt 420
EN 10080
CE 32.5
EN 197
yes
Rock anchor
2000
200
24
25
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Reinforced concrete volume incl. anchor mortar LA tower
Foundation Class 2 – Soft Weathered Rocks
Principal foundation category
Ultimate bearing pressure
Ultimate shear friction resistance
Ultimate frustum angle
Reinforced concrete density Compacted backfill density Foundation structure depth Concrete reinforcing content
Reinforced concrete volume S tower Reinforced concrete volume LA tower Foundation Class 3 – Good Soil
Principal foundation category
Ultimate bearing pressure Ultimate frustum angle Reinforced concrete density
Compacted backfill density / m3
type kN/m²
kN/m2 (°)
kN/m3 kN/m³ m
kg/m³ m³ m3
type kN/m2
(°) kN/m3 kN/m³ / Shaft with undercut
1000
100
30
24
18
Reduced pad
chimney with undercut
400
20
24
16
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Foundation structure depth Concrete reinforcing content Reinforced concrete volume S tower Reinforced concrete volume LA tower
Foundation Class 4 – Poor Soil, No Water
Principal foundation category Ultimate bearing pressure Ultimate frustum angle Reinforced concrete density Compacted backfill density Foundation structure depth Concrete reinforcing content
Reinforced concrete volume S tower Reinforced concrete volume LA tower Foundation Class 5 – Poor Soil, With Water
Principal Foundation category
Ultimate bearing pressure
Ultimate frustum angle / m kg/m³ m³
m3
type kN/m2 (°) kN/m3
kN/m3
m kg/m3 m3
m3
type kN/m2
(°) / Standard pad & chimney no undercut
250
10
24
16
Extended pad & chimney submerged
150
5
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Reinforced concrete density Compacted backfill density Foundation structure depth Concrete reinforcing content
Reinforced concrete volume S tower
Reinforced concrete volume LA tower
Foundation Class 6 – Very Poor Soil, With Water
Principal Foundation category Ultimate bearing pressure Ultimate frustum angle Reinforced concrete density Compacted backfill density Foundation structure depth Concrete reinforcing content
Reinforced concrete volume S tower Reinforced concrete volume LA tower Lattice Steel Towers
General information and data
Manufacturer / kN/m³ kN/m³ m kg/m³ m³
m3
type kN/m2 (°) kN/m3 kN/m³
m kg/m³ m³
m3
company / 14
10
Shallow raft submerged
80
0
14
10
-
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Design and statical calculation corresponds with the specification and standards set out hereto
Material used:
a) Structural members according to
If other, specify standard
Qualities: according to
for main stressed parts for other parts
b) Bolts and nuts
Qualities:
Step bolt diameter (min.)
Permissible stresses of structural members, bolts and nuts correspond with
Bolt connections secured with washers and spring washers
All tower steel parts hot dip galvanized
Zinc coat: for steel sections for bolts and nuts
Quality and tests correspond with
Min. diameter and number of bolts at stressed member connections
1) bolt diameter
Maximum slenderness ratio – L/r:
2) Main leg, stub and main compression members in crossarm
3) All other members having computed stresses
4) Redundant members without computed stressed
5) Tension members only / -
standard standard
grade grade
standard class mm
standard
-
-
µm
µm standard
mm
λ λ λ
λ / yes
EN or Other
EN 10025
S355J2 G3/G4
S235J2 G3/G4
ISO 190818
5.6 or 8.8
16
ENV1993-1-1
EN50341-1-J
yes
yes
85
55
ISO 1461
16
120
200
250
300
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Minimum thickness (t) and size of steel members of towers shall be as follows:
• Main leg, stub and main compression members in crossarm
• All other members having computed stresses
• Redundant members without computed stressed
• Gusset plates
Minimum angle bars: equal angle sections unequal angle sections
Maximum length of structural member
Tolerances of finished members:
• Max. lateral variations of actual length between points of lateral supports
• Finished members without ends finished for contact bearing:
- Members up to 3m length
- Members greater than 3m length
- 3m to 6m
- greater than 6m
Tower layout
The reference weight and dimension of the structure shall be calculated taking into account the steel structure including foundation stubs, members, joint plates, bolts and galvanizing excluding excess material, insulator attachments, conductors and designed according to the specified loadings, span parameters and dimensional conditions (face slope, structure deflection) as set out in the Technical Requirements of Tower Design. / mm mm mm mm
m
ratio mm
mm mm / 6
5
4
6
L45x45xt
L45x30xt
9
1/1000
± 1.5
± 2.5
± 3
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
Single Circuit Normal Suspension Tower Type S
Specific data:
• Design spans: Standard span Wind span
Weight span max.
Maximum span
Minimum ratio weight to wind span for clearance check
Line angle
• Main dimensions:
Total height above ground for tower body/leg basic
± 0 m
Spacing of crossarms top-middle– bottom
Height of lowest crossarm above ground level for tower body/leg basic ± 0 m
Length of crossarms from tower centre top middle bottom
Width between tower stubs at ground level for tower body/leg basic ± 0 m
• Slope angle to the vertical of one tower face
• Maximum design bending moment calculated with factored actions, for the tower body/leg basic ± 0 m
• Total weight of tower structures including 4 (four) legs basic ± 0 m and 4(four) stubs for following tower configurations:
• Tower body reduced -3 m
• Tower body basic ± 0 m
• Tower body extended +9 m
• Unit weight difference for one leg reduction / extension relative to the tower body/leg basic ± 0 m: / m m m m
ratio
o
( )
m m
m m m
m
(°)
kNm
kg kg kg / 400
450
600
800
0.60
0-2
Technical Schedules –
220 kV Overhead Transmission Line / Bidder / Contractor
BIDDER’S / CONTRACTOR’S GUARANTEED DATA / Unit / Data required / Data offered
Description
• One tower leg reduced -1 m
• One tower leg extended +2 m
Single Circuit Heavy Suspension Tower Type HS
Specific data:
• Design spans: Standard span Wind span
Weight span max
Maximum span
Minimum ratio weight to wind span for clearance check
Line angle
6) Main dimensions:
Total height above ground for tower body/leg basic
± 0 m
Spacing of crossarms top-middle-bottom
Height of lowest crossarm above ground level for tower body/leg basic ± 0 m
Length of crossarms from tower centre top middle bottom
Width between tower stubs at ground level for tower body/leg basic ± 0 m
• Slope angle to the vertical of one tower face
• Maximum design bending moment calculated with factored actions, for the tower body/leg basic ± 0 m
• Total weight of tower structures including 4 (four) legs basic ± 0 m and 4(four) stubs for following tower
configurations: / kg kg
m m m m
ratio
(o)
m m
m
m m m
m
(°)
kNm / 400
800
1000
900
0.5
0-2