The transformer shall be free from annoying hum and vibration when in operation even at 10%. How a singlephase, as is the case in one pole mounted distribution transformer, as well uses the neutral from a three phase. Concreating of pscpcc pole for transformer mounting. Jan 26, 2010 a pole mounted substation is a large, free standing, outdoor electrical equipment that is mostly located in residential places. Pad mounted, substation, and pole mounted transformers available from 5 kva to 60 mva. What are the different types of electrical substation. For pole mounted substations we produce insulator strings, outdoor switch. Pdf design of mvlv substation transformer researchgate.
The raptor protector platform also eliminates many outages caused by the raptors and their young due to electrical short circuits and the fowling of insulators. Such types of transformers are the cheapest, simplest, and smallest of distributions. The pole mounted voltage regulator is typically adjusted automatically, and must operate in conjunction with the substation voltage regulator and the substation transformer. Polemounted substation the substation consisting of a. Pdf a substation is a part of an electrical generation, transmission, and distribution system. Abstract a substation is a part of an electrical generation. A pole mounted substation is a large, free standing, outdoor electrical equipment that is mostly located in residential places. Table 1 gives an indication of the annual amount of failures. It is intended for application to new build or existing substations where significant work is carried out. Repair and maintenance of power distribution lines ncert. I would agree that a pole mounted transformer is, strictly speaking, a substation. Save weeks of civil engineering work and cut your complete installation costs dramatically. The raptor protector platform also eliminates many outages caused by the raptors and their young due to.
Soil in immediate vicinity of substation footings must be stable and free from obstruction special requirements apply for pole. Simply mount on a plinth, cable up and the jobs done. These instructions apply to pole type and stationtype distribution transformers, both single phase and three phase. It is the cheapest form of substation as it does not involve any building work. Integer style aldutirupter switches are engineered to be trouble free. Apr 29, 2015 design of pole mounted substation converts an electrical signal into precisely controlled physical displacement. Advantages resistant to vandalization maintenance free.
Critical specifications include displacement, force, operating voltage, stiffness, and resonant frequency 22. D substation standards ground cable on tubular steel structures support details 21. Pole mounted outdoor substation the transformers having a capacity up to 125 kva are mounted on the double pole structure and for the transformer having a capacity between 125 to 250 kva 4 pole structure with the suitable platform is used. Our metalclad distribution substation mds is a fully fitted, fully assembled substation package thats ready to install. Such substations are used for supporting distribution transformers having the capacity up to 250 kva. This is an outdoor substation with equipment installed overhead on a h pole or 4 pole structure. Design and introduction of substation electrical power system design.
Scribd is the worlds largest social reading and publishing site. El0441057 pole mounted substation earth clamp parking bar fitting details. Find cheap, durable and dependable pole mounted substation. Transformer humming is caused by vibrations due to stray mag. Electrical power substation engineering and layout electrical4u. Specification for 11 kv outdoor polemounted switchgear with. Accordingly, the decision for installation of a pole mounted dt substation or. Electrical power substation engineering and layout. Installation of 11kv440v distribution substation international. Depar tures are equipped with thermalmagnetic circuit breakers d165 for a transformer of 100 kva and d265 for a 160 kva transformer. Standard type steel lattice pole mounted tower substation.
The pole mounted substation are equipped with autoswitch technology and can handle distinct kinds of low and high voltage transmissions. There is mainly four type of substations we use for distribution purpose 1 outdoor substation 2 indoor substation 3 underground substation 4 pole mounted substation 1 indoor substation. In a pole mounted transformer substation, the maximum number of departures low voltage is fixed at two. Single line diagram of substations cad design software. In these type of substation fuse protected distribution transformer are mounted on poles along with electrical isolator switches. Similarly, a pad mounted transformer in an urban area fed from a reticulation or distribution feeder is a substation but is often described as a minisub. Ns122 pole mounted substation construction ausgrid.
High voltage cover mounted bushings are wet process porcelain with connectors suitable for copper or aluminum. All equipment, packaging and all other accessories provided shall be asbestos free. This is practiced in qatar iv pole mounted substations. Functions of a substationsubstations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer ale, 2016. Introduction to substations annotated instructors guide module overview this module introduces trainees to the function of substations at all levels of the power grid, with an.
Simple addition of the handle and the vertical pipe sections completes the installation. United states department of agriculture rural utilities service rus bulletin 1724e300 issued june 2001 design guide for rural substations. Prefabricated substations prefabricated substations. Design guide for rural substations usda rural development.
Basics, maintenance, and diagnostics vii contents continued page 4. Transmission and distribution protecting pole mounted. Components of 11kv 400v pole mounted sub station it is an. D substation standards lighting fixture pole and bracket mounting 19. The cost of replacing a pole mounted transformer including labour, material and transport is estimated to be about r40 000, resulting in huge financial implications to the utility or distributor. They are designed for direct teeoff cable connection to the 11kv or 6. It is a distribution substation placed overhead on a pole. These highcapacity and automatic pole mounted substation are improvised with modern technologies and are extremely crucial for power plants, substations and various commercial power distribution stations. Conclusionconclusion substation is the heart of electricsubstation is the heart of electric power system. New, energy efficient, oil filled transformers, singlephase and threephase. Substation working in bangla pole mounted 11kv400v youtube.
The enclosure should also permit free circulation of air on all sides. Noise may be due to transformer fans, transformer humming, corona discharge, switching operations, or general maintenance activity. This specification covers requirements for outdoor pole mounted autoreclosers. An operational substation will likely make some noise.
This is an outdoor substation with equipments installed overhead on a h pole or 4 pole structure. Single line diagram any complex power system even though they are three phase circuits, can be represented by a single line diagram, showing various electrical components of power system and their interconnection. However, it is recommended that each switch pole be checked for alignment and proper adjustment after being mounted on the structure. Low voltage bushings are typically side mounted and feature. The photograph is of a pole mounted substation in sydney, australia. Substation maintenance and transformer augmentation. The design based substations are indoor, outdoor, foundation mounted and pole mounted substations.
I would agree that a pole mounted transformer is, strictly speaking, a substation but would generally be called a pole mounted transformer. Technical specification for secondary substation earthing. Substations transformer may be classified according to metering arrangements mv or lv and type of supply overhead line or underground cable, substations transformer are classified into two types. Design and introduction of substation electrical power system design sub station the assembly of apparatus used to change some characteristics of electrical supply called the sub station it should be located at proper site it should provide safe and reliable arrangements it should be easily maintained and operated it should involve minimum capital cost classification of.
They may also be used to replace existing free standing pole transformers. The protection functionality enabling rapid circuitbreaker operation, whether this is due to an instantaneous, fast curve, or a. Checking transformer oil level checking oil leakage from the transformer tank or from its radiator checking for any damage or hairline cracks on transformer bushings. In my experience scotland, south africa and new zealand, the substation is generally the distribution point from which the 11kv reticulation sa or distribution uk and nz feeders emanate.
Pole substation distribution transformers endeavour energy. Prefabricated mvlv substation ehouse pole mounted switchgear e series rl series u series pole mounted transformers overhead network control and monitoring advc controller easergy flite, g200 2 3 3 5 4 pole mounted switchgear 1 and 1 complete offer ranging from 3 kv to 170 kv. Pdf protection of distribution transformer against. Installation and adjustment manual for type ttr8 vertical. Its main purpose is to stepdown the lethal 11kv to 415240v for light, commercial and residential loads consumers 3. In these circumstances, a pole mounted voltage regulator is used within the circuit to adjust the voltage level to adequately serve that end user. The ar shall be provided with external levers to permit manual. Finally, the role of a surge arrester in mitigating the overvoltage stress of nonsurgearresterprotected transformer poles is scrutinized. Functions of a substationsubstations may be owned and operated by an electrical utility, or may be owned by. Pole assembly abb pole assemblies are constructed of uv resistant hcep encapsulating material and are design to provide a rated 10,000 full load operations without maintenance. Fig i shows the layout of pole mounted substation 2. Compact substations may be used where an 11kv or 6. Pole mounted substations are earthed at two or more places. Free breathing conservator transformers hermetically sealed transformers pages 4 5 merlin gerin transformers an introduction to the complete range of merlin gerin transformers and package substations.
The substation shall be suitable for satisfactorily working under the following. K substation standards switch operating and equipment platforms electrical design and details 20. Horizontally mounted doublebreak switch with grounding switch. Substation working in bangla, pole mounted 11kv400v. Dec 04, 2020 pdf a substation is a part of an electrical generation, transmission, and distribution system. Technical guide the mvlv transformer substations abb group. Pole mounted substation site selection criteria are listed pole mounted substations for commercialindustrial applications in urban areas shall only be used where existing hv and lv mains are overhead. The specification for fixed earthing systems within ehv, hv, hvmv and lv substations also applied to terminal towers adjacent to substations and cable sealing end compounds, pole mounted transformer or airbreak switch disconnector installations and pole mounted reclosers with ground level control. El0435620 pole mounted substation 11 kv 433250 v and 11 kv 250120v transformer. Location of the surrounding loads in the layout of both the current and the. Oct 23, 2020 pole mounted substation pole mounted substation are mainly distribution substation constructed on two pole, four pole and sometime six or more poles structures. Stationclass outdoor air switch pole unit dimensions. Mains design instruction mdi 0031 overhead distribution. In this presentation, you will see the preventive maintenance of a pole mounted substation.
El0435620 pole mounted substation 11 kv 433250 v and 11 kv 250120v transformer arrangement. Outdoor substation outdoor substation is further classified into two types pole mounted substation plinth or foundation mounted substation comparison between outdoor and indoor substation outdoor substation indoor substation more space required less space required less time required for erection more time required for erection easy. Pole mounted substations are used on railcorps 11 kv and 33 kv. The transformer and other equipment are mounted on h. This includes all hvlv substations, hv switching stations, hv pole mounted installations and hv customer substations up to and including 11 kv. Pole mounted 11kv distribution transformerthis video shows you how to install a pole mounted transforme. Ask them to interpret the symbols, letters, and numbers associated with components on the drawing and document the information gathered on a. Platform styles are available in sizes up to 3750 kva and 200 kv bil. Electrical substation components and their workings. Polemounted substation mcgrawhill education access. Pdf protection of distribution transformer against arising. The equipment covered by these instructions should be operated and serviced only by competent personnel familiar with good safety practices.
The main purpose of the power transformer is to stepup the transmission. Ns122 pole mounted substation site selection and construction. There are three major types of distribution networking. El0610718 pole mounted substation earthing arrangement.
All the equipment is the outdoor type and mounted on the supporting structures of high tension distribution line. Pole mounted distribution transformer transport for nsw. Slide erection of pole mounting distribution substation ilt u7. Industrial substation according to constructional features indoor substation outdoor substation pole mounted substation underground substation merits and demerits merits of indoor substation less space requirement and running cost low. El0441056 pole mounted substation 11kv boric acid expulsion dropout fuse arrangement. Its main purpose is to stepdown the lethal 11kv to 415240v for light, commercial and residential loads consumers. Reconditioned oil filled transformers available from 5 kva to 10 mva.
Singleend radial fed singleend radial fed refers to a number of customer substations or pole mounted substations are connected to the primary substation. The raptor protector platform is designed to provide the raptor an alternative to nesting on utility structures, where they are in danger of electrocution. Outdoor substation outdoor substation is further classified into two types pole mounted substation. Stationclass outdoor air switchpole unit dimensions. Step 1check bases check bases to make sure that the spacers and rotor bearing tops are square and level.
Slide erection of pole mounting distribution substation. Farady 50kva power transformer,50 kva pole mount transformer. A remote terminal unit that is designed for pole mounting and that operates specific pole mounted equipment remotely. Design and introduction of substation electrical power. Energies free fulltext optimized protection of polemounted.
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