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Cbip Manual On Transformer (publication No ) [g0rw86myryqk].Cbip transformer manual free download
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Home Login Register Search. Report this link. Mathur R. Chadha Editors G. The publishers have taken utmost care to avoid errors in the publication.
However, the publishers are in no way responsible for the authenticity of data or information given by the contributors. Bhopal Members Shri M.
Goswami Shri M. Sayed AGM Engg. Divisional Engineer Power Grid Corp. CESC Ltd. Shri B. Bhatia Addl. Chief Engineer Shri V. Bhaskar Gujarat Energy Transmission Corp. Kattigehallimatt Dy. Malik Shri D. Majumdar Suptd. Garg Shri P. Director Shri J. Bhageria Shri R. Katakwar Shri R. Tiwari Superintending Engineer Dist. Mumbai Bhopal iii Shri S. Srivastava Shri A. Crompton Greaves Ltd. Ramchandran Bharat Heavy Electricals Ltd. Naik Shri M. EMCO Ltd. Samba Murthy Shri R. Vijay Electricals Ltd.
Mahajan Shri M. Karkhanis Shri K. Bhonslay Shri K. Kapur ED Retd. Shri V. Lakhiani Power Grid Corp. New Delhi Mumbai iv lR;eso t;rs Since then we have made rapid progress and on date this figure stands at 1,23, MW. Matching with the generating capacity, transmission and distribution networks have also grown. Due to these shortages, despite best efforts the voltage and frequency in different grids sometimes varies beyond acceptable limits and lead to power cuts.
Transformer is a vital link for taking power supply from generating station to consumer premises. Matching with the growth in power sector, about 56, MVA power transformers and 26, MVA transformers for distribution network in the country are being manufactured annually.
In transmission and distribution sector, cost of the power transformer represents the largest portion of the capital investment and financial consequences of failure of transformer lead to considerable loss of revenue besides break down of power supply. In early 70s, it was felt that industry should have detailed reference specifications for transformers. This manual was subsequently revised in and in The transformer manual issued by CBIP is being widely used by power engineers as a reference book covering all aspects of transformers for almost all applications.
Almost all the utilities in the country are referring the CBIP Manual on Transformers while formulating their own purchase specifications on the basis of technical information contained there in.
I am happy to note that this manual has been revised and updated now with the help of Working Group experts from all eminent organizations, and contains the latest technological information including installation, testing, commissioning and repairs of transformers besides additional chapters on kV transformers, Condition Monitoring and Diagnostic Techniques and chapters on various components of the transformers of all sizes and voltages including dry type transformers.
I congratulate CBIP and all experts of the Working Group for bringing out this manual covering latest state-of-art technology and I am sure that this document will be of great use to engineering fraternity as a reference book.
In our country the transformers are subjected to severe stress condition due to wide variation in voltage and frequency in system due to huge gap in demand and supply causing higher failure rate of transformers as compared to western countries.
With the escalations in the cost of material and other inputs into its manufacture, the requirement of un-interrupted power and above all the steep rise in the cost of power has forced the manufacturers to compete in innovations and improvise designs as well as manufacturing practices to deliver a low-loss, competitive costing transformers with built-in monitoring features to ensure its long trouble- free service life.
On the other hand power utilities are also under immense pressure to maintain and upgrade their system to meet the rising demand in power with no tolerance for any breakdown in supply.
Moreover with the introduction of 'Availability Based Tariff, setting-up of the 'Electricity Regulatory Commissions' and the 'Consumer Grievance re-dressal Forums' all over the country, the essentiality of uninterrupted power now has a large commercial value.
In line with our quality policy, to promote and coordinate professional excellence in water and power sector CBIP has prepared more than Manuals on all important subjects. To disseminate the latest developments among the engineer's fraternity, CBIP has updated these manuals from time to time.
First edition of the Transformer manual was published in and it was updated in and again in This trend of repair of transformer at site is becoming popular since it saves in to and fro transportation time as well as HV test cost since some of the tests including HV Test are not to be repeated.
I am sure that this Manual shall be of immense value and provide good reference document to the practising engineers especially those looking after planning. For this purpose CBIP had constituted a working group. I thank all experts of the working group for their valuable contribution. General Manager T.
KPCL etc. In this edition a chapter on 'Repair of transformer at site' has also been added.. All apparatus shall also be designed to ensure satisfactory operation under such sudden variations of load and voltage as may be met with under working conditions on the system. This clause is not intended to prohibit the use of suitable grades of cast iron for parts where service experience has shown it to be satisfactory.
Alternatively dryness can be judged by dew point measurement. A matt or satin finish shall be provided to avoid dazzle from reflected light. Guide pulls shall be used where practicable. Lock nuts shall be used on stud connections carrying current. The quality will be established by tests as per IS: Alternative to galvanising. The zinc coating shall be smooth. Labels mounted on dark surfaces shall have white. The water extraction per tonne of insulation per hour may be limited to 50 grams maximum.
The preparation for galvanising itself shall not adversely affect the mechanical properties of the wire. All leads from the winding to the terminal board and bushings shall be adequately supported to prevent injury from vibration including a systematical pull under short circuit conditions.
The preparation of galvanising and the galvanising itself shall not adversely affect the mechanical properties of the coated material. Danger notices shall have red lettering on a white background. The type and thickness of paint shall be chosen to suit pollution level at site.
After cleaning. General 3 lettering on a black background. The total dry film thickness should preferably be between and microns. In general. The oil shall conform to IS : This is to be done by thoroughly cleaning the damaged area and applying the full number of coats as was applied originally.
Supplier shall furnish necessary information on the make and grade of the top-coat paint. The types of cooling shall be as stated in the relevant specifications.
Normally oil immersed transformer shall be provided with conservator vessels. Where sealed transformers are specified. If heaters are not provided in the chamber. Special measures. As far as possible the make and grade of the recoat shall be same as the original coat. Manufacturer should supply the necessary paint for this touch up painting at site. General Fig. Note : Operation of a transformer at rated kVA at reduced voltage may give rise to excessive losses and temperature rise 2.
If nothing has been stated by the purchaser. In case bi-directional flow of power is required. The forced cooling equipment shall come into operation by pre-set contacts in WTI and the transformer will operate as a forced cooled unit.
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