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220 KV Sag Tension Calculation- Thyottar | Electrical Substation | Electromagnetism
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SCM_3rd_Addm_1_2010
( A GOVERNMENT OF INDIA ENTERPRISER)
"SOUDAMINI", 3rd FLOOR, PLOT NO.-2
SECTOR-29, GURGAON-122001, HARYANA
DESIGN, ENGINEERING, SUPPLY, ERECTION(INCLUDING CIVIL WORK), TESTING AND
COMMISSIONING FOR CONSTRUCTION OF SUB-STATION PACKAGE-'PB-S3' UNDER TRANSMISSION
SYSTEM ASSOCIATED WITH PALLATNA GBPP & BONGAIGAON TPS IN NORTH EASTERN REGION
EX WORKS SUPPLY CONTRACT AGREEMENT: REF. NO. C-62010-S219A-3/G7/CA-I/3476 DATED 6.10.2010
SERVICE CONTRACT AGREEMENT: REF. NO. C-62010-S219A-3/G7/CA-II/3477 DATED 6.10.2010
PSC ENGINEERS PVT. LTD., KOLKATA
132KV BAY EXTENSION AT PURBO KANCHAN BARI SUB-STATION - SAG TENSION CALCULATION
AND STRINGING CHART
K2010PS003A-245
REVISED AS PER PGCIL COMMENTS
FIRST SUBMISSION FOR APPROVAL
Ex WSC Agreement Ref. Ltd. 1000 kg per conductor for Single Zebra ACSR. 3) The initial tensile force is considered as per technical specification i.K2010PS003A-203 Rev.Nil Wind condition.Nil wind and 36 % wind Force.Sag Tension Calculation and Stringing Chart Page 2 of 13 PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) SAG TENSION CALCULATION AND STRINIGING CHART FOR 132KV BAY EXTENSION AT PURBO KANCHAN BARI SUBSTATION (TRIPURA) SUMMARY 1.K2010PS003A-204 Rev. C-62010-S219A-3/G7/CA-I/3476 Dt: 6. b) 75 oC -. Sag at these temperatures for Nil wind condition is checked for adequate Vertical clearance. 2) Single Zebra ACSR Conductor is proposed for high level bus (jack bus).1987 iii) Technical specification of PGCIL for substation package-'PB-S3' under transmission system associated with pallatna GBPP & Bongaigaon TPS in nort eastern region.0 - Layout Plan.0 STANDARDS & REFERENCES : Following standards/references are used for present report :- i) IS : 802 ( Part 1 / Sec 1 ) : 1995 ii) IS : 875 ( Part 3 ) .10.2010 PSC Drg.Tension for 00C & 36% wind. 2 & 3 respectively. 4. a) 0 oC -.0 INTRODUCTION : For 132kV Bay Extension at Purbo Kanchan Bari Sub-Station (Tripura) 1) Single Zebra ACSR Conductor is proposed for Transfer Bus .e. 2 Layout Sections.10. calculations are carried out for following conditions as stated in clause 10 of IS 802 ( Part 1 / Sec 1 ) : 1985. K2010PS003A-245 R1 . Sag and tension values for all temperatures from 00C to 850C and nil wind condition are tabulated in the table kept below as Annexure-1. It is seen that the vertical clearances adopted are adequate. b) 32 oC -.Nil Wind and Full Wind Force.A & B. iv) Tamilnadu Electricity Board Engineer's association"Power Engineer's Hand-Book" (Part-I) v) Overhead Line Practice By John McCombe (Book) vi) Drawings 3. The Sample calculation for different conditions are enclosed herewith. PSC Engineers Pvt.0 CONCLUSION : The results are tabulated in the table kept below as Annexure-A.2010 SC Agreement Ref. 320C & full wind has been computed to check it against design value of 1T per conductor for Single Zebra ACSR conductor.2 METHODOLOGY : To compute sag and tension. 2. No. C-62010-S219A-3/G7/CA-II/3477 Dt: 6. The present report is brought out to determine tension and sag under different conditions for conductor and also to check vertical clearances.
OF CONDUCTOR WIND LOAD TENSION (Kgf) SAG (m) NIL 459 0.65 36% 500 ---- NIL 156 1. SPAN LENGTH TEMP. OF CONDUCTOR WIND LOAD TENSION (Kgf) SAG (m) NIL #REF! #REF! 36% #REF! ---- NIL #REF! #REF! FULL #REF! ---- NIL #REF! #REF! 0oC 132 KV 52. 1993 SPAN LENGTH TEMP.10.4.2010 PSC Drg.93 + 1.6 7.50 mtrs. SPAN LENGTH TEMP.33 0oC 132 KV 21 mtrs.Equipment Height 8 .64 + 1.55 mtrs. No.0 #REF! Margin available = #REF! WIND LOAD TENSION (Kgf) SAG (m) NIL #REF! #REF! 36% #REF! ---- NIL #REF! #REF! FULL #REF! ---- NIL #REF! #REF! Hence it is Safe. Single Zebra Transfer Bus-B 32oC o 75 C Minimum Phase-Phase / Phase-Ground clearance require under sag condition. OF CONDUCTOR 0oC 132 KV 52.6 #REF! #REF! Margin available Hence it is Safe.10. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.Equipment Height 8 . = = = Maximum Sag + Phase to Phase clearance 0.4. Ltd.3 3. Ex WSC Agreement Ref. Single Zebra Transfer Bus-A o 32 C o 75 C Minimum Phase-Phase / Phase-Ground clearance require under sag condition. PSC Engineers Pvt.0 .69 FULL 293 ---- NIL 96 2.64 + 1. K2010PS003A-245 R1 .3 #REF! Clearance actually provided = = = = Tower height .8. = = = Maximum Sag + Phase to Phase clearance 1. Single Zebra Jack Bus o 32 C 75oC Minimum Phase-Phase / Phase-Ground clearance require under sag condition.3 #REF! Clearance actually provided = = = Higher Tower Height .63 Clearance actually provided = = = = Tower height .Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 2 of 13 ANNEXURE-A SAG-TENSION TABLE FOR CONDUCTOR WITH DIFFERENT SPANS FOR 132KV BAY EXTENSION AT PURBO KANCHAN BARI SUB-STATION (TRIPURA) FOLLOWING SAG VALUES HAVE BEEN CALCULATED AS PER IS-802 (PART-2).2010 SC Agreement Ref.67 Margin available Hence it is Safe. C-62010-S219A-3/G7/CA-I/3476 Dt: 6. = = = Maximum Sag + Phase to Phase clearance 1.3 3.Lower Tower Height 12.
1995 Therefore PSC Engineers Pvt.2010 SC Agreement Ref.31 Kg/m For 12 m height PSC Drg.10.6 Vd2 = 482.e.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 3 of 13 ANNEXURE-B CALCULATION OF WIND EFFECTS (Ref.70 N/m2 49.375 Meteorological reference wind speed VR = Vb / K0 = 1 m/sec 28.2 of Ref IS) Where.0 Design wind speed Vd = VR x K1 x K2 K1 = Risk co-efficient K2 = Terrain roughness coefficient which is 39 m/sec Where = 1 Factor to convert 3 second peak gust speed into average speed of wind during 10 minutes period K0 = 1.0 Design wind pressure 5. -------- Refer Table: 7 of IS 802 Part 1 / Sec 1.0 Wind load on each conductor Vd = 28.03177 Gc = Gust Response factor (Cl. No. of conductor = 0.51 N/m For12 m height = 3. C-62010-S219A-3/G7/CA-II/3477 Dt: 6. Ex WSC Agreement Ref. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.36 3. 9.10. K2010PS003A-245 R1 .36 Pd = 0. Ltd. the sum of half the spans on either side in mtrs Cdc = Drag coefficient = 1 D = Dia.2010 Fwc = 2. IS 802 Part 1/Sec 1 : 1995) 1.0 Basic wind speed Vb = 2.25 Kgf/m2 Fwc = Pd x cdc x L x D x Gc L = Wind span i.12 For 8 m height = 32.
10.0318 2. PSC Engineers Pvt.0000 0.45 500.05 0.0000 2.Hardware and string ( L) Initial Tension per conductor Dia of Conductor Weight of Conductor No.2010 SC Agreement Ref.) (kgf/m) f22 x { f2 .Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 4 of 13 SAG TENSION CALCULATIONS ( 132KV Single Zebra ACSR Conductor ) 21M SPAN (SINGLE ZEBRA ACSR)----------132kV Transfer Bus-A 22 23 General Perticulars : Span Length Girder width Span length excluding girder width Spacer Span Length of Disc Insulator String (One side) (li) Total Length of Hardware (With Turn Bucckle + Without Turn Bucckle) Diameter of disc insulator string (di) Length of conductor Span length excluding girder width . C-62010-S219A-3/G7/CA-I/3476 Dt: 6.0040 3.0000 0.00 3.[Refer Annexure-B] = = = = = = = = = = = = = = = = = = = = = = = 17.0 The equation for finding stress (f2) in different air conditions and for different temperature ranges is as under := q22 х δ2 х L2 x E / 24 …… Refer T. K2010PS003A-245 R1 .0000 1.0500 0. Handbook = 0 ……. Unit weight of single tension hardware without turnbuckle Unit weight of Disc Insulator with hardware (Wi) Length of Turnbuckle (lt) Width of Turnbuckle (Bt) Weight of turnbuckle (Wt) Weight of conductor with spacers 100% wind load on conductor per phase (n х FWC)---.00 1.E α t] }-(q22х 2 2 δ х L х E / 24) The Sag can be calculated from the following equation …… Eq-(II) Where.10.E α t] } f22 x { f2 .00 0.0040 0.cm /oC C o m 1. Eq-(I) SAG = q1*δ*L2 n 8 f2 f1 = Initial stress in conductor at temperature t1 (kg/cm2) f2 = Final stress in conductor at temperature t2 (kg/cm2) q1 = Still wind loading factor q2 = 36% Maximum wind loading factor q3 = Maximum wind loading factor δ = Weight Factor in kg/m/cm2 L = Span (m) E = Modulus of Elasticity in kg/cm2 α = Co-efficient of linear expansion D = Overall Diameter of conductor (m) A = Cross sectional area of conductor (cm2) P2 = Wind load on conductor 36% (kgf/m) P3 = Wind load on conductor (max.45 9. of Spacers Unit Weight of spacer Unit weight of single tension disc insulator string Unit weight of single tension hardware with turnbuckle.cm Kg/Sq.2010 PSC Drg.[f1 .(q12 х δ2 х L2 х E / 24 х f12) .50 15. Ltd.B.0000 166 0.05 9.[f1 - (q12 х 2 2 δ х L х E / 24 х f12) .5 0.E. No.0000 165.9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 28 Number of subconductors 29 Bus Height m m m m m m m m m Kg m Kg/m Kg Kg Kg Kg Kg m m Kg Kg/m Kg/m Sq.0000 1. Ex WSC Agreement Ref.0000193 85 n h = = 1 11. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.97 686000.3100 24 25 26 27 Area of cross section of conductor Modulus of Elasticity of conductor Coefficient of Thermal expansion Maximum temperature considered AREA ES ET Tmax = = = = 5.N.0220 1.00 0.
19 Kg/m At Full wind P3 = 3. T1 = 500 kgf And Stress in conductor at reference condition is .10.2 Wind factors Refer S.3100 Kg/m At Still wind q1 = 1 At 36% wind q2 = 2.16 = = 1. K2010PS003A-245 R1 . Eq-(III) Where "n" represents nos. So.2010 PSC Drg. No.4 Temperature factors E α t32 = 423.00 Kg/m A = 5. Sag ……………. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.1 Weight factor Weight of conductor with accessories/Phase Cross sectional area Therefore Wc 2. of subconductor 3.93 2.34 kg/m/cm2 At 36% wind P2 = 1. 320C and 850C for Nil wind condition. PSC Engineers Pvt.97 cm2 δ = 0.2010 SC Agreement Ref.3 Loading factors = At Full wind q3 1.0 Calculation of Sag and Tension Here Sag is calculated at 00C. Ltd.No. Tension at reference condition is. Ex WSC Agreement Ref.6736 E α t85 = 1125.10.383 E α t0 = 0 = WcL2 n8T2 (Starting condition is assumed at 32oC and 36% of full wind) Therefore from above formulas sag can be calculated as. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.0 Parameters 2. 23 above 2. Reference condition is assumed as 00C and 36% of Full Wind.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 5 of 13 t1 = Initial temperature (oC) t2 = Final temperature (oC) T1 = Initial tension in conductor at temp t1 = f1 x A (kgf) T2 = Final tension in conductor at temp t2 = f2 x A (kgf) S1 = Sag at initial condition T1 (m) S2 = Sag at final condition T2 (m) δ = W A = 2.
51 TP2 = n * T2 * U1 * Cosδ * + W c * (L/2) * U1 * Sinδ + W i * U2 * Sinβ = 472.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 6 of 13 f1 = nT1 A f1 = 83.14 m SAG DUE TO INSULATOR The parameters required are expressed as follows.6736 f23-f22[ f1-((L2 х δ2 x E х q22) / (24 х f12))-(E α t32) ] = (L2 δ2 E q12) / (24) f23-f22 х [206.434.75 kg/cm2 At 32oC 3.525 radians = 1.01 radians β = Tan-1 [di/li] = 0. Ex WSC Agreement Ref.6838 = 0 f2 = 26.n * T2 * U1 * Sinδ = 273. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.40 .8411] .05 m V2 = √((It/2)2 + (Bt/2)2) = 0. U1 = √(li2 + (di/2)2) = 3.10.53 m φ = -1 Tan (TP1 / TP2) Sag due to insulator = Si = U1 * Sin(φ + δ) iii = SAG DUE TO TURNBUCKLE The parameters required are expressed as follows.12 Kg/cm2 Tension T2 = 155.00 m U2 = √((li/2)2 + (di/2)2) = 1.22 radians δ1 = PSC Engineers Pvt. …………….7521 kg/cm2 f1 = 83.21 = 0. K2010PS003A-245 R1 .03 m Tan-1 [(Bt/2)/It] = 0.1.50.3251 . SAG DUE TO CONDUCTOR Reference stress at 00C and 36% of full wind condition is. No.2010 PSC Drg. Tension Factor at Nill wind L 2 *  2 * E * q 12 24 = 2 2 = 55.1 3.932927.1 For Nil wind condition :i.94 Kg Sag at 320C and Nill Wind (Sc) = WcL2 Stress (f2) is calculated as under. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.10. Ltd.02 radians TP1 = (W c*L/2) * U1 * Cosδ + Wi * U2 * Cosβ . L2 *  2 * E * q 24 * f 1 2 Now. Eq-(I) n8T2 ii 0.5022 = 287622.50 m δ = Tan-1 [(di/2)/li] = 0.7691 E α t32 = 423. V1 = √(It2 + (Bt/2)2) = 0.2010 SC Agreement Ref.
2010 SC Agreement Ref. K2010PS003A-245 R1 . Ltd.50.3251 . Ex WSC Agreement Ref.73 radians = 0. Tension Factor at Full wind = L 2 *  2 * E * q 32 24 kg/cm2 = 55. Eq-(I) o At 85 C 3.40 .1587] .2 83. No.6838 = 0 f2 = 16.6736 …………….10.69 m Sag due to Turnbuckle = St = V1 * Sin(φ1 + δ1)/2 Total maximum sag of single moose conductor Sg = Sc+Si+St 3.2456 = 0 f2 = 49.434.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 7 of 13 β1 = Tan-1 [Bt/It] = 0.75 L 2 *  2 * E * q 22 24 * f 1 2 = L 2 *  2 * E * q 12 24 E α t85 = 1125.11 Kg/cm2 Tension T2 = 293.50.8411] .5022 = 287622. Now.92 φ1 = Tan-1 (TP3 / TP4) = 0. PSC Engineers Pvt.5022 = 1072286.3830 f23-f22[ f1-((L2 х δ2 x E х q22) / (24 х f12))-(E α t32) ] = (L2 δ2 E q12) / (24) f23-f22 х [206. SAG DUE TO CONDUCTOR Reference stress at 00C and 36% of full wind condition is.10276580.7691 Stress (f2) is calculated as under.2010 ……………. 83. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.75 423.3251 .21 Kg f1 = f23-f22 3.10.083 TP4 = n*T2*V1*Cosδ1*+(W c*(L/2)+Wi)*V1*Sinδ1+W t*V2*Sinβ1 = 7.1019.1.932927. f1 = L 2 *  2 * E * q 22 24 * f 1 2 Now.1 For Nil wind condition :i.2.2 For full wind condition :Reference stress at 00C and 36% of full wind condition is.41 radians TP3 = (W c*(L/2)+Wi) *V1*Cosδ1+Wt* V2*Cosβ1-n*T2*V1*Sinδ1 = 7.07 Tension Factor at Nill wind kg/cm2 = 55. C-62010-S219A-3/G7/CA-II/3477 Dt: 6. f23-f22[ f1-((L2 х δ2 x E х q22) / (24 х f12))-(E α t32) ] = (L2 δ2 E q32) / (24) х [206.9289 E α t32 = Stress (f2) is calculated as under.02 m = 1.40 . Eq-(I) Kg/cm2 PSC Drg.
02 radians TP1 = (W c*L/2) * U1 * Cosδ + Wi * U2 * Cosβ .41 radians TP3 = (W c*(L/2)+Wi) *V1*Cosδ1+Wt* V2*Cosβ1-n*T2*V1*Sinδ1 = 7.n * T2 * U1 * Sinδ = 275. f1 = 83. U1 = √(li2 + (di/2)2) = 3. C-62010-S219A-3/G7/CA-I/3476 Dt: 6. V1 = √(It2 + (Bt/2)2) = 0.10.5022 24 * f 1 2 Tension Factor at Nill wind PSC Engineers Pvt.1 For Nil wind condition :i.10.75 L 2 *  2 * E * q 22 Now.2010 SC Agreement Ref. Ltd.Sag Tension Calculation and Stringing Chart ii PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 8 of 13 Tension T2 = 95.02 m = 2.05 m V2 = √((It/2)2 + (Bt/2)2) = 0.96 Sag at 850C and Nill Wind (Sc) = WcL2 n8T2 = 0.07 m φ = -1 Tan (TP1 / TP2) Sag due to insulator = Si = U1 * Sin(φ + δ) iii SAG DUE TO TURNBUCKLE The parameters required are expressed as follows.7691 PSC Drg.01 TP2 = n * T2 * U1 * Cosδ * + W c * (L/2) * U1 * Sinδ + W i * U2 * Sinβ = 292. No.00 m U2 = √((li/2)2 + (di/2)2) = 1. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.23 m SAG DUE TO INSULATOR The parameters required are expressed as follows.27 = 0.74 = 0. SAG DUE TO CONDUCTOR Reference stress at 00C and 36% of full wind condition is.2010 = L 2 *  2 * E * q 12 24 = 287622.01 radians β = Tan-1 [di/li] = 0.3. K2010PS003A-245 R1 .22 radians β1 = Tan-1 [Bt/It] = 0.743 TP4 = n*T2*V1*Cosδ1*+(W c*(L/2)+Wi)*V1*Sinδ1+W t*V2*Sinβ1 = 6.3 Kg At 0oC 3.33 m φ1 = -1 Tan (TP3 / TP4) Sag due to Turnbuckle = St = V1 * Sin(φ1 + δ1)/2 Total maximum sag of single moose conductor Sg = Sc+Si+St 3.50 m δ = Tan-1 [(di/2)/li] = 0. Ex WSC Agreement Ref. kg/cm2 = 55.03 m δ1 = Tan-1 [(Bt/2)/It] = 0.85 radians = 0.75 radians = 2.
6838 = 0 f2 = 76.10. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.1. PSC Engineers Pvt.3251 .03 m -1 = 0. U1 = √(li2 + (di/2)2) = 3. f23-f22 ii SAG DUE TO INSULATOR The parameters required are expressed as follows.22 radians -1 Tan [Bt/It] = 0.05 m Stress (f2) is calculated as under.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 9 of 13 E α t0 = 0.2010 SC Agreement Ref.75 L2 *  2 * E * q 24 * f 1 2 2 2 = 55.89 φ1 = Tan-1 (TP3 / TP4) = 0.93 TP2 = n * T2 * U1 * Cosδ * + W c * (L/2) * U1 * Sinδ + W i * U2 * Sinβ = 1381.2 For 36% wind condition :Reference stress at 00C and 36% of full wind condition is.57 = 0.41 radians Tan [(Bt/2)/It] TP3 = (W c*(L/2)+Wi) *V1*Cosδ1+Wt* V2*Cosβ1-n*T2*V1*Sinδ1 = 3.50 m δ = Tan-1 [(di/2)/li] = 0.40 . V1 = √(It2 + (Bt/2)2) = 0.749 TP4 = n*T2*V1*Cosδ1*+(W c*(L/2)+Wi)*V1*Sinδ1+W t*V2*Sinβ1 = 24. No.59 m φ = -1 Tan (TP1 / TP2) Sag due to insulator = Si = U1 * Sin(φ + δ) iii …………….05 m V2 = √((It/2)2 + (Bt/2)2) δ1 = β1 = = 0.65 m Sag due to Turnbuckle = St = V1 * Sin(φ1 + δ1)/2 Total maximum sag of single moose conductor Sg = Sc+Si+St 3. Eq-(I) SAG DUE TO TURNBUCKLE The parameters required are expressed as follows.89 Kg/cm2 Tension T2 = 459.5022 PSC Drg.932927.00 m U2 = √((li/2)2 + (di/2)2) = 1.50. Ex WSC Agreement Ref.02 radians TP1 = (W c*L/2) * U1 * Cosδ + Wi * U2 * Cosβ . Ltd.0000 f23-f22[ f1-((L2 х δ2 x E х q32) / (24 х f12))-(E α t32) ] = (L2 δ2 E q12) / (24) х [206. C-62010-S219A-3/G7/CA-II/3477 Dt: 6. K2010PS003A-245 R1 .01 radians β = Tan-1 [di/li] = 0.10.n * T2 * U1 * Sinδ = 265.(0)] .2010 = kg/cm2 83.19 radians = 0. f1 Now.01 m = 0.15 radians = 0.06 Kg Sag at 00C and Nill Wind (Sc) = = WcL2 n8T2 0.
2010 PSC Drg.0 Verification of Clearances :- Vertical Clearance: Minimum Phase-Phase / Phase-Ground Clearance require under Sag condition = = = Minimum Phase to Phase Clearance + Maximum Sag 1.65 36% 500 ----- NIL 156 1.2442 …………….0558 = 0 f2 = 83. WIND LOAD TENSION= STRESS (f2) X AREA Kgf SAG IN MTRS.9 . OF CONDUC.(0)] .50. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.63 mtrs.40 .67 mtrs. Clearance actually provided = = = = Tower Height .2143865. Eq-(I) 4. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.3251 .6 7.33 0oC 220 KV 17 mtrs. Single Moose 32oC 85oC 5.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 10 of 13 = L 2 *  2 * E * q 22 24 E α t0 = 0 Stress (f2) is calculated as under.3 + 2. Margin available Hence its Safe.75 Kg/cm2 Tension T2 = 500.Equipment Height 11. PSC Engineers Pvt.10. NIL 459 0.4. Ltd. No.69 FULL 293 ----- NIL 96 2.0 The results are tabulated below:SPAN LENGTH TEMP.00 Kg Tension Factor at 36% wind = 389315. 3.2010 SC Agreement Ref.10. f23-f22[ f1-((L2 х δ2 x E х q22) / (24 х f12))-(E α t32) ] = (L2 δ2 E q22) / (24) f23-f22 х [206. K2010PS003A-245 R1 . Ex WSC Agreement Ref.04 3.30 mtrs.
31 442.53 29 28 -54901.26 0.26 9 8 -224478.13 0. K2010PS003A-245 R1 .31 183.31 13 12 -151117.72 323.14 0.11 0.12 0.30 0.99 0.03 0.21 0.37 17 16 -108765.16 0.63 39 38 -37927.56 0.58 235.16 0.40 0.67 0.10 0.81 595.09 0.14 0.07 0.08 0.65 0. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.08 0.67 PSC Engineers Pvt.08 0.49 84.07 0.28 11 10 -182662.20 291.80 72.40 19 18 -94407.24 306.05 0. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.09 0.91 0.09 0.65 332. No.24 0.12 0.62 0.12 0.2010 PSC Drg.99 64.20 5 4 -352109.22 0.09 0.06 0.27 0.26 0.77 95.07 0.72 0.11 0.52 56.25 0.30 272.70 221.55 424.20 0.38 0.54 30 29 -52594.05 0.09 0.18 0.18 0.39 239.32 0.68 47.42 49.33 14 13 -138336.23 0.12 247.78 0.12 0.50 27 26 -60127.65 0.36 58.08 228.08 0.32 0.10.30 0.17 0.18 0.09 0.23 243.24 0.09 0.43 21 20 -83022.92 0.65 41 40 -35677.09 0.36 0.16 0.03 0.18 3 2 -444652.92 116.28 0.18 87.03 0.20 0.07 0.02 0.27 0.06 0.55 31 30 -50462.05 0.2010 SC Agreement Ref.14 0.58 34 33 -44943.27 10 9 -202095.20 0.15 0.15 267.43 365.71 793.58 61.52 80.11 110.27 0.43 45.31 0.31 0.04 0.25 0.25 55. Ltd.37 224.10 0.81 0.08 0.86 629.23 0.23 78.04 0.20 0. Temp.52 0.11 0.71 890.70 154.23 0.23 7 6 -279800.75 52.31 0.20 50.34 173.07 0.05 0.11 407.17 0.29 0.97 392.52 0.24 163.30 12 11 -165787.56 32 31 -48486.71 47.08 0.16 0.25 0.16 0.26 0.09 0.39 18 17 -101156.22 0.24 0.92 314.05 252.43 748.17 0.06 0.24 0.90 99.32 563.93 508.65 0.82 284.44 22 21 -78197.66 42 41 -34646.18 0.09 0.40 0.49 70.74 342.06 145.64 40 39 -36769.48 51.57 57.31 0.17 0.59 35 34 -43350.24 8 7 -250234.01 104.17 2 1 -499344. No.81 231.21 0.19 0.19 0.20 0.24 0.08 378.06 0.44 122.52 278.74 53.06 261.78 0. sag of quad moose conductor Deg.22 6 5 -313616.08 0.19 4 3 -395671.05 0.11 0.06 0.03 0.61 37 36 -40466.45 23 22 -73850.57 33 32 -46651.10 0.14 0.03 0.32 137.29 0.19 0.07 0.28 0.22 0.48 25 24 -66348.03 60.70 0.18 0.08 0.41 20 19 -88396.21 0.34 15 14 -127169.96 68.07 0.04 0.08 0.52 0.37 534.20 0.44 462. C Equation f2 T2 Sc Si St Sg 1 0 -559984.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 11 of 13 Annexure-1 SAG AND TENSION VALUES FOR ALL TEMPERATURES FROM 00C TO 850C AND NIL WIND CONDITION 21 M SPAN (SINGLE ZEBRA ACSR)---------------------132kV TRANSFER BUS-A Sr.01 0.08 0.73 0.26 0.49 26 25 -63097.22 0.68 705.25 75.48 666.10 0.11 129.15 0.47 0.99 353.16 0.96 484.04 0.36 16 15 -117379.60 36 35 -41861.67 0.03 0.10.74 48.03 256.08 0.62 38 37 -39157.07 0.67 298.23 0.34 66. Final Stress Tension at nil wind condition Sag due to conductor Sag due to insulator Sag due to turnbuckle Total max.06 0.22 0. Ex WSC Agreement Ref.39 0.42 91.69 46.57 63.48 840.37 0.09 0.52 28 27 -57404.13 0.28 0.15 0.10 0.61 54.04 0.36 0.25 0.47 24 23 -69917.
18 31.29 161.05 0.46 34.43 0.27 0.44 0.71 47 46 -30249. sag of quad moose conductor Deg.37 0.46 0.90 188.36 0.45 34.86 67 66 -19960.2010 SC Agreement Ref.11 0.77 54 53 -25650.79 0.62 177.38 0.35 0.14 42.10 0.01 0.35 0.89 70 69 -18983.35 0.09 0.11 0.87 68 67 -19624.73 32.49 43.39 0.93 0.07 37.84 0.09 184.38 0.12 0.29 171.32 0.49 186.51 0.12 0.86 66 65 -20308.56 0.54 34.00 0.85 65 64 -20668.30 0.16 204.83 212.88 69 68 -19298.79 57 56 -24073. No.40 39.24 0.24 32.03 160.26 0.04 155.34 0.12 0.08 36.25 209.11 45.10 0. Ex WSC Agreement Ref.14 150.84 64 63 -21041.36 0.31 0.55 162.35 0. C Equation f2 T2 Sc Si St Sg 43 42 -33671.34 0.92 149.71 148.33 0. No.37 0.92 75 74 -17549.12 0.50 33.38 0.43 0.28 156. C-62010-S219A-3/G7/CA-I/3476 Dt: 6.52 157.09 0.31 0.34 0.39 0.10 0.33 0.63 0.28 0.97 179.65 201.13 0.56 0.43 44.39 0.12 0.13 0.08 31.29 0.43 0.32 0.78 56 55 -24577.11 0.46 0.28 0.46 0.25 0.32 0.52 33.29 0.10 0.63 30.31 36.36 0.44 0.38 0. Temp.11 0.35 0.46 0.97 84 83 -15443.51 147.38 0.32 0.27 0.43 215.83 163.11 145.88 0.96 82 81 -15866.10.55 0.35 0.32 0.47 0.81 0.34 0.33 30. Final Stress Tension at nil wind condition Sag due to conductor Sag due to insulator Sag due to turnbuckle Total max.04 0.41 0.47 0.78 0.17 30.91 73 72 -18096.12 0.12 0.13 0.11 0.10 0.66 32.77 158.54 33.34 0.27 0.54 0.81 0.13 0.94 174.38 31.75 192.87 0.10 0.26 0.33 0.36 0.10 0.61 172.45 0.67 41.29 0.01 0.37 0.37 0. Ltd.38 0.11 0.31 146.87 0.15 199.81 60 59 -22675.73 50 49 -28095.11 165.39 0.12 0.12 0.87 0.72 48 47 -29496.36 0.96 81 80 -16087.10 0.42 0.70 206. C-62010-S219A-3/G7/CA-II/3477 Dt: 6.12 38.12 0.42 0.76 53 52 -26221.94 79 78 -16547.40 0.83 0.82 61 60 -22243.78 55 54 -25102.80 58 57 -23588.13 0.01 34.11 0.80 36.81 59 58 -23123.95 80 79 -16314.97 83 82 -15652.33 0.11 0.50 0.73 37.05 218.79 35.68 38.68 0.64 42.18 30.93 76 75 -17287.99 PSC Engineers Pvt.40 0.20 194.30 0.47 0.39 0.31 0.10 0.68 44 43 -32747.35 0.37 0.12 0.24 0.74 0.84 63 62 -21427.97 33.98 85 84 -15239.39 0.36 38.94 78 77 -16786.70 46 45 -31039.45 0.57 35.41 0.87 40.83 30.39 0.42 0.37 0.28 0.61 0.41 0.45 35.46 0.12 0.Sag Tension Calculation and Stringing Chart PGCIL 132kV Bay Extension at Purbo Kanchan Bari Sub-Station(Tripura) Page 12 of 13 Sr.11 0.43 0.40 0.39 166.89 71 70 -18678.11 0.27 175.88 40.11 0.32 190.67 197.69 45 44 -31871.83 62 61 -21828.58 153.11 0.71 182.74 51 50 -27442.39 0.44 0.11 0.30 0.12 0.68 168.2010 PSC Drg.36 0.45 0.33 180.12 0.10.79 0.75 52 51 -26818.94 39.27 0.12 0.37 0.67 32.13 0.99 86 85 -15041.35 0.79 43.40 0.33 0.90 72 71 -18382.88 0.99 169.91 74 73 -17818.73 49 48 -28779.10 0. K2010PS003A-245 R1 .57 0.81 41.13 0.38 0.95 31.81 154.93 77 76 -17033.36 151.
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