Because of larger electrical design clearances and volume of insulation materials required, 66kv transformers feature bigger dimensions than their 33kv counterparts of. Technical specification for 5 mva 3311 kv onana power. The project includes three such inverter houses feeding three st epup transformers that are interconnected at the medium voltage switchgear. I was responsible for making a 33kv outdoor electrical substation for my factory. We sell and hire power transformers on a supply only basis, or with optional onsite installation and commissioning by our own contracting division. There is no high voltage line because its just using ac 220v and dc 110v for controlling outdoor 33kv vcb and some other component like transformer. In addition a 25a breaker feeds a small station service transformer converting the 480v277v to single phase 120v240v for loads such as lighting, telemetry, security, etc. Pdf voltages between 11kv and 33kv there is no difference between a transmission line and. Units also available as a power voltage transformer for limited single phase supply. Any modification in engine without koel consent, use of engine other than designed application or changes in engine performance related settings without koel consent. Current electric was established in 1982 and is the leading manufacturer of current and voltage transformers in south africa, in june 2008 the business was acquired by actom group previously known as alstom electrical industries. Adesina and others published work specification for the construction of 33kv overhead lines across a lagoon using equal level deadend lattice tower supports find. Electrilo heavy cable box compound is suitable for 3. This specification covers design, manufacturing, testing and delivery of the three star rating 100 kva, 110.
Actom distribution transformers is the leader in the supply of transformers for the renewable energy sector. We got the power from our national grid and our mainline voltage is 33kv. The main principle of operation of a transformer is mutual inductance between two circuits which is linked by a common magnetic flux. Image 22kv voltage transformer instrument transformer technologies provides a range of oil filled, outdoor, post type, voltage transformers for distribution substations, protection and metering. Now i will discuss the classification of an electrical substation. It is applicable to the 33kv power transmission and. Classification of electrical substation an electrical engineer. The transformer can be directly installed at the inlet andoutlet cables. Frequency 50hz 33kvnominal system voltages 11kv 400230v maximum system voltages. Otherwise, its just voltage and the difference is a factor of 3 between them. Hg fuse protection on hv side and fuse protection on lv side and vent pipe. Mediumvoltage surge arresters surge arresters are used for protection of electrical equipment from all kind of overvoltages caused by lightening or switching operations. Transformer, operation, testing and maintenance 33kv and below 9.
Choosing a backup generator plus 3 legal house connection options transfer switch and more duration. Different types of transformers and their applications. A basic transformer consists of two coils that are electrically separate and inductive, but are magnetically linked through a path of reluctance. A is the core crosssection area, in square meters, so that is very rarely an integer, but mostly a tiny fraction of a square meter.
This document is not part of a manual but it is published to the energy networks internet site. Then ct current transformer and we use ct for measuring the line current from ht panel. View detailed export data, price, monthly trends, major exporting countries, major ports of transformer 33kv 415v. Total cost of ownership tco lifetime costs for transformers english pdf. Switchgear and circuit breakers failures and case studies. Wholesale 33kv transformer 33kv transformer manufacturers. Due to limitedspace inside the nacelle, installation of the transformer can be troublesome. If a very high voltage is required, the transformer is usually build up in stages by cascading. Ba distribution transformers distribution transformer. Technical specification for 3311kv power transformers apdrp scheme page 3 of 72 4. A transformer has no moving parts and is a completely. Power transformers built for reliability and efficiency. Ba distribution transformers distribution transformer product.
With given secondary voltage, distribution transformer is usually the last in the chain of electrical energy supply to households and. Contribution of any generators to the shortcircuit power considering all the contributions of the installation. Now, both of them are medium voltage transmission line. Electrical insulation testing of hv equipment up to 33kv. The groundingtransformer connection to the 233kv power transformer should be gang operated for protectiverelay or manual isolation to limit a resonant effects. This warranty is the only document given by us warranting the kirloskar r1040 r1080 series engine. Ht panel wiring inside wiring for a 33kv ht panel in a. Transformer basicsworking principle,construction,types. Electrical fault analysis of 33kv distribution network a.
Transformer, operation, testing and maintenance 33kv and below. The engine model is punched on nameplate in column type. Abb has more than 100 years of experience in designing and manufacturing surge arresters and protection devices. Corresponding emissions and natural resources have been set by using the ecolab. Technical guide the mvlv transformer substations abb group. Abbs liquidfilled transformers which can be used for indoor or outdoor applications. Chipping, scraping and steel wire brushing using manual or power driven tools cannot remove. Difference between power transformer and main differences. Pdf work specification for the construction of 33kv.
In my last post about electrical substation, i discussed what is a substation, why we need substation and the most common components for an electrical substation. T mu am 01002 ma maintenance requirements analysis manual. Whether the transformers are used for wind, solar or hydro applications, actom distribution transformers can supply mineral oilfilled, cast resin dry type or environmentally friendly kclass ester oilfilled transformers. Lzck series split core current transformer is suitable forcurrent measurement and microcomputer protection of electrical equipment in 10kv and 35kv ac power system. Ba distribution transformers distribution transformer 315kva, 11kv, 3 phase, onan business area organisation power generation. It is applicable to the 11kv power distribution system.
When the grounding transformer is taken out of service, understand resultant effects on cable, switchgear and transformer insulation, potential transformers and surge arresters. Electrilo heavy is a semi fluid compound specially formulated for use in cable boxes and bus bar chambers this switchgear and transformer filling oil can be poured at room temperature without requiring preheating. The product range comprises of current transformers up to 33kv and voltage transformers up to 22kv for use. A power transformer is a technology investment that needs to be secured for decades. Hpcl 33kv power transformer manual transformers, new. With a worldwide installed base of over 150 000 units in more than 100 countries, trihal is an optimized transformer for contractors, panelbuilders and distributors from the mid and large sized buildings and industry. In this post, i will discuss all the electrical equipment that we practically used in our outdoor electrical substation first of all our demand load form, the government grid line was 3mw and there was a guideline for making this substation like transformer must be installed at the outdoor, well grounding. Jul 08, 2017 there is no high voltage line because its just using ac 220v and dc 110v for controlling outdoor 33kv vcb and some other component like transformer tap changer.
Sn source transformer capacity load demand mw akure 2x30mva. What is the difference between 11kv and 33kv transmission lines. The new design is completely comply with the iec standards. Read about company and get contact details and address. Data sources materials or components have been allocated from abb bill of material data. Image 2kv voltage transformer instrument transformer technologies provides a range of oil filled, outdoor, post type, voltage transformers for distribution substations, protection and metering. Electrical fault analysis of 33kv distribution network a case study of ekiti state 33kv distribution network kehinde olusuyi, temitope adefarati, ayodele sunday oluwole, adedayo. A wide variety of 33kv voltage transformer options are available to you, such as instrument, power, and electronic. Because of larger electrical design clearances and volume of insulation materials required, 66kv transformers feature. Bushings, fuses, fan and pump motors, lightning arrestors.
The reliability and efficiency of the transformer has a major impact on the total cost of transmission over a long period of time. Export data and price of transformer 33kv 415v zauba. Switchgear, transformers, cables, overhead lines, surge arresters. System conditions the equipment shall be suitable for installation in supply systems of the following characteristics. The examples are stated above will clarify the matter. According to the necessity, these are classified as the power transformer, distribution transformer measuring transformer, and protection transformer. Jul 20, 2017 choosing a backup generator plus 3 legal house connection options transfer switch and more duration. Now come to the 33kv vcb vacuum circuit breaker and this vcb is responsible for turn off the 33kv line if there is any problem with power transformer incoming and outgoing side but we can control this vcb form ht panel. Switchgear and circuit breakers failures and case studies ue systems 2015 reliable asset conference june 4th. They are suitable for high voltage greater than 33kv power transfer applications. It is widely used in compact fully insulated ring network switchgears such as abbsafe ringsafe plus. This specification covers the design, manufacture, testing and supply of 11 kv. High voltage testing 149 the high voltage is applied across the device under test by means of a transformer.
Feb 03, 2015 operation and maintenance of 2 33kv substation dept of eee, skit. The information about engine series, no of cylinders, piston displacement in liter per cylinder and aspiration is mentioned. By this post, you will gain some very basic information for a substation. Boq for construction of 1x5 mva 3311 kv substation at.
It can be designed to step up or step down voltages and works on the magnetic induction principle. New transformers movie the ojays transmission line logging equipment toyota avalon stopping power installation manual kindle app parts catalog. Material kg core steel 533 transformer oil 340 steel tank 324 aluminium wire 1. Specification substation power transformer horizon power. A transformer is an electrical apparatus designed to convert alternating current from one voltage to another. Medium voltage switchgear, transformer and interconnection. The power from t1, t3 is fed to a 33kv bus and the power from t2, t4 is fed to a 11kv bus. Projects product 11kv433v mobileskid mounted substation sheet 2 of 46 details of equipments. By means of cascading, the size of the transformer and the insulation bushing. Electrical fault analysis of 33kv distribution network a case study of ekiti state 33kv distribution network kehinde olusuyi, temitope adefarati, ayodele sunday oluwole, adedayo kayode babarinde 1 department of physical planning, federal university oye ekiti, nigeria. Follow instructions in the transformer manual carefully.
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