Estimation of a_pole_mounted_substation
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This document discusses estimating the costs for a pole mounted substation. It defines estimating and lists the essential elements as specifying materials, knowing current market costs, calculating material and labor costs, and understanding purchasing systems. It describes substations as receiving high voltage energy and reducing it for distribution. Outdoor pole mounted substations have advantages over indoor types as they require less construction materials and equipment is easier to view and access for fault detection. The document provides an example estimate for components of an 11kV/440V pole mounted outdoor substation.
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Estimation of a_pole_mounted_substation
- 1. Estimating of A Pole mounted substation Prepared By :
- 2. INTRODUCTION Estimating is defined as a method by which we can get an approximation of the material, investment involved, and the time to be taken for the completion of Electrification project Normally it can be enlisted under following four headings. - Estimating the quantity of the material and the cost involved. - Analysis of cost or selling price. - Maintaining proper accounts. - Provision of selling aids .
- 3. ESSENTIAL ELEMENTS OF ESTIMATING Specification of material. Latest market cost of material. Calculation of material and labour cost. Knowledge of purchase system.
- 4. SUBSTATION Substations are serves as a source of energy supply for the local area of distribution. Their main functions are to receive energy transmitted at high voltage from the generating stations, reduce the voltage to a value appropriate for distribution and provide facilities for switching.
- 5. CLASSIFICATION OF SUBSTATION 1) Indoor type. In such substation the apparatus is installed within the substation building. The equipment on primary side may be T.P.M.O. circuit breakers, H.T fuse The equipment on secondary side may be distribution switch board .
- 6. pole mounted substations. 2) Outdoor type. Plinth mounted substation.
- 7. ADVANTAGES OF OUTDOOR SUBSTATION The constructional works is needed is much smaller than the indoor substations. Less quantity of building material is needed. The extension of the scheme is easier, whenever needed. Whole of the equipment can viewed, which makes fault location easier.
- 9. ESTIMATING OF 11KV/440V POLE MOUNTED OUTDOOR SUBSTATION
- 11. 40x6 mm,M.S flat with nut & bolt. 2nos 2nos H.T grade, , porcelain body, glazed
- 15. CONCLUSION Estimating of substation plays an important role in distribution of electrical energy, because substation is the heart of distribution system of electrical energy. So we have to consider both all points before estimating of a substation. Generally we should estimate in such a way that the cost involved should be low and further addition of new parts can be easily done for the fulfillment of rise in power demand.