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11 kv line wire was broken, which was connected

11 kv line wire was broken, which was connected and made the line operational #transfomer @work of uppcl the Estimation of 11 KV Lines 1. Poles Materials used: R.C.C length of pole 8 meters or 9 meters, working load 140 Kg. Cement concrete proportion, 1:2:3 or steel with M.S round. 2. Cross Arm Type: H.T Horizontal cross arm or H.T v-cross arm. Section: L-section (Angle iron) Length: 0.9 meter With HT single top support, pole clamp, bolt, nuts, washers complete set. 3. Guy Set 11 KV class, a stay clamp is fixed at which a turnbuckle with eyebolt is bolted. 15 KV strain insulator, stay wire of 8/11 SWG standard, Anchor plate of MS 300 mm * 300 mm * 3.1 mm, Guy pit is filled with sufficient weight of stones and then fit into the earth, A complete set. 4. Pin Insulator Class: 11 KV for H.T Material: Well glazed porcelain Size: height 125 mm and dia 178 mm Complete with insulator pin, nut, and washer. 5. Strain insulator Material: Well glazed porcelain No: 15 Voltage: 15 KV 6. Conductor Size: Squirrel, (No.4 A.C.S.R) of 6/1/2.11 mm (6. no of aluminum conductor and one central galvanized steel conductor having a diameter of 2.11 mm each). Weasel, (No. 2 A.C.S.R) of 6/1/2.59 mm. Rabbit ( No. 1 A.C.S.R) of 6/1/3.35 mm. Wren (No. 8 A.C.S.R) of 6/1/3.33 mm. Fox (A.C.S.R) of 6/1/2.79 mm. Drake (A.C.S.R) of 30/7/4.27 mm 7. Gang operating switch (G.O.S) Operating voltage: 11 KV or 13.2 KV No of Break: Single or double Current rating: 200 or 400 Amps Operating handle with locking arrangement. 8. Spiral earth electrode (SEE) Material: 8 SWG G.I wire Size: 150 mm dia, 450 mm long with 115 turns. Wound spirally from top of the pole Wound spirally from top of the pole to the ground and buried 1.5 m below the ground at bottom of the pole. 9. Anti-climbing devices AC devices such as barbed wire are to be wound on all H.T poles above the height of 1.5 meters so that ignored persons do not climb the pole and meet with an accident. 10. Danger board or Caution board Size of plate : 20 * 15 * 1.6 mm thick Color: Red letters in a white background or white letters on a red background 11. Earth guard stirrup (EGS) Material: M.S. flat of size: 25 * 6 mm, length 2.74 meters. Double inverted V-Shaped flat forming a net of 8 SWG G.I wire for conductors. If the line snaps it will hit earth G.I wire and gets earthed. 12. Double pole structure Type of pole: P.C.C or R.C.C Height of pole: 8 meters or 9 meter with cross arms braces, clamps bolt, nuts, with 2 No. of 8 meter RCC pole a complete set. 13. Bird guards Material: MS sheet of 1.6 mm thick. Size: Saw-type with a suitable arrangement for fixing in to cross arms, etc. 14. Primary cutout Type: Drop out lift-off (DOLO) Material: Porcelain Voltage rating: 8, 11 and 15 KV class 15. Lightening Arresters  Type: Electrolytic multi-gap, oxide film, Thy-rite, etc Voltage rating : 6, 11, 13.2 KV etc. Enclosure material: porcelain with suitable top and bottom terminal for connection. Methods Of Calculating Materials Required for HT Lines Materials required are : 1. No of span = Length of line / span 2. No of supports = No of span + 1 3. For 11 KV lines, Double pole structure is to be provided for each run of 1 KM with an additional DP structure required for tapping and deviations if any. Therefore, No of DP structures = No of KM + (Deviation ) 1 + 1 ( for tapping ) 4. Number of poles i.e., R.C.C poles of 8 meters long = total no of supports – number of DP structures. 5. No of HT horizontal cross arms = No of poles + No of additional deviations = No of top fittings 6. No of pin insulators =(No of supports + No of additional deviations) * 3 7. No of strain or Disc insulators = 3[1 (staring end) + 2(additional anchoring) + 2(intermediate DP) + 1(dead end DP)] 8. No of Guy set required = (No of intermediate D.P) * 4 + (No of additional anchoring’s) * 2 + No of deviation + (No of guardings) * 2 + No of storm guysets (for each KM two pairs) + 2(dead end  DP) 9. Length of A.C.S.R conductor required with 3% sag  = 3*1.03*No of KMS. 10. During stringing of the conductor in order to reduce the sag of the conductor every 6th span pole is anchored is called anchored pole i.e., at a distance of 0.5 KM. Hence additional anchoring at pole = No of KM, because the anchoring is to be had at each 0.5 KM, and as one anchoring will be done at DP itself, so for each KM there will be only one additional anchoring at the pole. 11. No of anti-climbing devices  = 1 (No of the single pole) + 2 ( No of DPS) 12. No of Danger boards = No of supports 13. No of Earth guard stirrups  = [No of poles – Additional anchoring poles] 14. Provision for guarding, Transportation charges, labor charges, inspection charges are to be provided. Estimation of materials required for HT line construction Q: A 11 KV line is to be tapped and extended to a distance of 7 km, rural electrification. Prepare a list of materials required 33kv line