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Showing posts with the label Technical

New 33/11KV PSS execution step by step

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Practical Insights from Executing a 33 kV/11 kV Power Substation Project The successful execution of a 33 kV/11 kV Power Substation (PSS) requires much more than construction activities. It begins with thorough planning, verification, documentation, and coordination among various stakeholders. Based on my field experience, I would like to share the key pre-construction activities that are essential for ensuring smooth project execution and avoiding costly delays later. Step 1: Verification of Project Land The first activity after receiving a work order is to verify the project site. This stage forms the foundation of the entire project and helps identify potential risks before mobilization. The verification process should focus on: ·          Confirming that the land has been legally acquired or officially allocated for the project. ·          Reviewing ownership records and supporting documents....

Cable selection for a 7.5 KW 3 Ph motor

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  Cable Size Calculation 1. Basic Formula (3 Phase Load) Current (A)=Power (kw) * 1000/( sqrt 3 * Voltage* PF* Efficiency) 2. Example - Motor Cable Size → Given Motor Power = 7.5kW Voltage = 415V Power Factor = 0.8 Efficiency =0.9 3. Step 1: Calculate Current Current = 7500 /(1.732 * 415 * 0.8 * 0.9) → Current = 14A - 15A → Current = 14-15 A 3. Select Cable Size (Copper) Current (A) Copper Cable Size → For 15 A motor → 2.5 sqmm Cu cable Up to 10 A-1.5 sqmm Up to 16 A-2.5 sqmm Up to 25 A+4 sq mm 4. Aluminium Cable Selection ( Practically site 4 sqmm लेते है for safety ) Aluminium cable approx 1.5 times copper size 2.5 sqmm C u Right arrow 4 sqmm Al Up to 35 A-6 sqmm Up to 50 A-10 sq mm 4 sqmm Cu 6 sqmm Al For 15 A motor→25 sqmm Cu cable (Practically site u 4 sqmm ad for 5. Voltage Drop Check (Important) Voltage Dcrop ( V)= √3* ILR (प्रेसने L = length in km) 6. Quick Thumb Rules (Site Use ) 1 HP motor 1.5-2.5 sqmm Cu 5 HP motor 4 sqmm Cu Technician Practical Tips: 7.5 HP motor → 4-6 ...

रामसर साइट्स क्या है?

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  रामसर साइट्स की मुख्य बातें ​आर्द्रभूमि क्या है? आर्द्रभूमि (wetlands) ऐसे क्षेत्र होते हैं जहाँ पानी हमेशा या साल के एक बड़े हिस्से के लिए मौजूद रहता है। इसमें झीलें, नदियाँ, दलदल, मैंग्रोव और यहाँ तक कि चावल के खेत जैसे मानव निर्मित क्षेत्र भी शामिल हो सकते हैं। ​ महत्व : ये स्थल जैव विविधता के लिए बहुत महत्वपूर्ण हैं। ये कई प्रकार के पक्षियों, मछलियों और अन्य जीवों के लिए आवास प्रदान करते हैं। इसके अलावा, ये बाढ़ को नियंत्रित करने, पानी को शुद्ध करने और भूजल को रिचार्ज करने में भी मदद करते हैं।   ​ उद्देश्य : रामसर कन्वेंशन का उद्देश्य इन महत्वपूर्ण पारिस्थितिक तंत्रों को बचाना और यह सुनिश्चित करना है कि उनका उपयोग इस तरह से किया जाए जिससे वे नष्ट न हों, बल्कि उनका स्थायी रूप से उपयोग हो सके। ​भारत में, ओडिशा की चिल्का झील और राजस्थान का केवलादेव राष्ट्रीय उद्यान 1981 में नामित होने वाले पहले रामसर स्थल थे। आज, भारत में कई रामसर स्थल हैं, जिनमें से सबसे अधिक तमिलनाडु में हैं।    भारत में 91 रामसर स्थल | State-wise Count of Ramsar Sites Tamil Nadu: 20 Uttar ...

Word meaning and uses

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obscure Meaning: Not clear or Difficult to understand   Example:His answers were obscure and confusing. 2) Inflation  Meaning -    A sustained rise in the general price of goods and services  Example -Government sleeping like Kumbhakarna on rising Inflation -Rahul Gandhi said. 3)Instigate   Meaning:to make something start to happen उकसाना भड़काना Example - He is  arrested on suspicion of the instigation of acts of terrorism. Jaffar Ali: The chief of a mosque panel in Sambhal, Uttar Pradesh, was arrested for allegedly instigating communal riots. Police claim to have evidence that he mobilized a mob and incited violence during a mosque survey. 4)Sluggish - The meaning of "sluggish" is related to slow movement, lack of energy, or slow activity. 🐌 1. Sluggish Meaning in English Definition:  * Moving or working more slowly than normal, often due to a lack of energy or being tired.  * Lacking energy or vigor; lethargic.  * (For an economy...

Railway Crossing Permission for Electrical line Crossing Process

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Today I will share some experiences on how we can get permission from railway authority for electrical line crossing.  First we have to open following WEB site of rail bhumi crossing sewa   https://ircep.gov.in/IR-RBCS/login.jsp Then have to register details with asking details like name of the department, designation, adress of office,Phone no, location of crossing etc. After filling above ,have submit plan drawing and other documents like questionnaire, estimate.. After submission of above,have to pay registration fees of amount Rs 1000/-(One Thousand Rupees) and getting registrations successfully. When registeration successfully done,file forwarded for intimation of joint feasibility surey ,and Railway authority would fixed date for feasibility survey with Railway Officers.Then Party, who is applied application have to intimate all officer and arrange all officer to arrive same time for joint feasibility. After Joint feasibility done,plan drawing to be prepared and getting ...

MAJOR MISTAKE BY SITE STAFFS

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 Following error was observed most of the time during observation... V-X arm should be fitted at a distance of 831.5 mm from the top of the PSC pole. This is to avoid tripping by a bird sitting on any of the phase.....Also one more question may be raised that V Shaped bracket why used in place of Horizontal channel.....So now clear this doubts..as below 👇  1)To avoid tripping from bird sitting on line. 2) HT Line stringing in Minimum space and  standard clearance. 👉 Explained through video in my YouTube channel by site pics..

Interview questions to ask

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 Today I will share some interview asked question in RE or Distribution project  work. 1)Types of PCC Pole used? Ans - Click here to know Answer. 2)Weight of 8.5 mtr PCC pole? Ans - Click here to know Answer. 3) Weight mentioned on pole i.e 8.5 mtr 180kg.Which Waight is 180kg? Ans - Click here to know Answer. 4)Full form of PCC Pole? Ans - Click here to know Answer 5)How much Pit depth of a Pcc pole? Ans - Click here to know Answer. 6) How to do PCC pole concreting? Ans - Click here to know Answer. 7)Say types of Conductor used? Ans- Click here to know Answer. 8) Current carrying Capacity of a Rabbit Conductor? Ans - Click here to know Answer. 9)Weight of a Rabbit Conductor per KM? Ans - Click here to know Answer. 10) Current carrying Capacity of HT ABC? Ans - Click here to know Answer. 11) Current carrying Capacity of a XLPE Cable? Ans - Click here to know Answer. 12)Say Size of a Rabbit Conductor in mm? Ans - Click here to know Answer. 13)Prepare a single line diagram of a 3...

what are the possible causes of cable faults?

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नमस्कार मित्रों,आज मैने HT AB CAble फॉल्ट कियुं होता है उसिके बारे में चर्चा करूंगा।    आप सभी जानते है कि एचटी एबीसी साइट इंजीनियर के लिए सरदर्दी बन जाती है। जैसे ही लाइन चार्ज करते है कुछ मिनटों या महीनों के बाद फॉल्ट आना पैदा करदेता है।   बहुत सारे इंजीनियर तो बोलना शुरू कर देते है कि खराब इनसुलेशन की बजहा से ऐसे फॉल्ट होता है।  बहुत सारे रिसर्च और अनुभव के बाद  बाद में यही नतीजे में पहुंचा कि जो इस्प्रकर की। 1) अन लोडिंग,स्टोरेज और हैंडलिंग सही से होना चाहिए। 2) टर्मिनेशन किट या ज्वाइंटिंग सही से होना चाहिए। 3) एआर्थिंग सही से होनी चाहिए जैसे कि टर्मिनल की latches  एआर्थिग  जरूर करना होता है। एक चीज ध्यान देना कि मैसेंजर तार को भी दोनों साइड में एर्थिंग करने की। ऐसे तो मैने ए भी कहूंगा कि  हर एक खंबे में मैसेंजर तार को एर्थिग करना चाहिए। Please Subscribe my YouTube channel ⁸ साइट पर केबल ड्रम की अन-लोडिंग, स्टोरेज और हैंडलिंग के लिए दिशानिर्देश जो इस प्रकार की होनी चाहिए।  केबल ड्रम की अनलोडिंग या तो क्रेन द्वारा या होइस्ट द्वारा या ट्रक ...

Electrical checklist for construction site / Some points before electrical distribution work

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  Check list of Electrical Erection under FSP ADB Scheme. For erection work 1st we have to erect    Poles which are 4 types i.e 8.5 meter 180kg PCC Pole,9 mtr 400kg PCC Pole,11 Mtr STP,13 Mtr STP. Before erection we have to get knowledge about GTPS of above pole. 8.5 Mtr 180kg Pcc pole GTP 1 Lenghth 8.5 meter 2 Working load 180kg 3 Weight pole the pole 425kg(Approx) 4 Top dimension 92x145 mm 5 Bottom dimension 92x300mm 9 Meter 400 KG GTP 1 Lenghth 9 meter 2 Working load 400kg 3 Weight pole the pole 675kg(Approx) 4 Top dimension 225x100 mm 5 Bottom dimension 395x100 mm 11 Meter STP Length                                              11 Meter Working load                                   260Kgf Outside diameter and Thickness Bottom-     193.7x4.85 mm  ...