Power Transformers Dry and Oil-Insulated
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POWER TRANSFORMERS DRY AND OIL-INSULATED POWERING YOUR FUTURE TABLE OF CONTENTS Reference list 4 Introduction 6 General information 8 Tests 11 Packaging and transportation 11 Power transformers 10; 15; 20; 35 kV for distribution networks 12 Technical data of distribution power transformers 10; 15; 20; 35 kV 14 Impedance-matching transformers 16 Transformers for power supply of submersible pumps 18 Technical data of transformers for power supply of submersible pumps 19 Transformers for power supply of 24 pulse variable - frequency asynchronous valve electric drive with low-harmonics 21 current option TM-SESH and TMN-SESH-type general purpose 1000-6300 kVA oil power transformers with voltages up to 35 kV 22 TNG-SESH and TNGF-SESH-type 14 series power transformers filled with fire retardant dielectric liquid for 10 kV 25 distribution networks Examples of overall and installation dimensions 27 Distribution dry-insulated transformers TLS(Z)-SESH type 6, 10 kV 33 Distribution dry-insulated cast resin transformers (with protective cover) TSL(Z)-SESH 6, 10 kV 36 REFERENCE LIST The company offers integral unit block-module transformer substations 35 – 220 kV, integral unit switchgears and control gears 6 – 20 kV substations, collection chambers of single-sided maintenance, 6 – 35/0.4 kV transformer substations, 10 – 220 kV high voltage apparatus, 10-35 kV vacuum circuit breakers, automatic circuit-breakers, power and instrument transformers, electric rooms. The company performs integrated design of construction facilities, service technical support of products, reconstruction and repairs of used objects, provides consulting services, executes supervision installation and commissioning works. PRODUCTS OF THE COMPANY IS SUCCESSFUL IN SALES AND EFFICIENT IN OPERATION: By enterprises of gas-and-oil industry and energy sector • Rosseti, OJSC; • MRSK North Caucasus, PJSC; • Far East Distribution Grid Company, PJSC; • FGC UES, JSC; • MRSK Urals, PJSC; • Ulanbator Power Distribution Grids, JSC, • MRSK Center, PJSC; • MRSK South, PJSC; Mongolia; • MRSK Siberia PJSC; • MRSK North-West Region, PJSC; • Yugra Territorial Electricity Company, OJSC. • Kubanenergo, PJSC; • Lenenergo, JSC, St. Petersburg; • Tumenenergo, PJSC; • MOESK, PJSC; • MRSK Center and Volga Region, PJSC; • RAO Energy Systems of the East, JSC; By gas-and-oil industry production companies and transport industry companies; • Gazprom, JSC; • NK RussNeft, PJSC; • KazakhOil, PJSC; • Novatek, PJSC; • NGK Slavneft, PJSC; • PA Azerigaz (Azerbaijan); • Rosneft Oil Company, PJSC; • Tatneft, PJSC; • SOCAR State oil company (Azerbaijan); • Surgutneftegaz, OJSC; • ANK Bashneft, PJSC; • Jamal LNG, PJSC; • Lukoil, PJSC; • AK Transneft, PJSC; • Irkutsk oil company, LLC. • Gazprom Neft, PJSC; • AK Transnefteproduct, PJSC; By generating companies • RusHydro, PJSC; • Inter RAO, PJSC; • Siberian generating company, LLC; • Gazprom energoholding, PJSC; • LUKOIL - Volgogradenergo, LLC; • RusHydro, PJSC - Sayano-Shushenskaya HPS. • Far East generating company, PJSC • RAO Energy Systems of the East, PJSC; By branches of Russian Railways • East-Siberian Railway; • Kuybyshev Railway; • Northern Railway; • Gorky Railway; • Moscow Railway; • North-Caucasus Railway; • Far-Eastern Railway; • October Railway; • South-Eastern Railway. • Trans-Baikal Railway; • Volga Railway; By mining processing industry companies • Alrosa, JSC; • Coal company Kuzbassrazrezugol, PJSC; • EvrazHolding, PJSC; • MC METALLOINVEST, LLC; • Thai mining and refining plant, PJSC; • Magnitogorsk Metallurgical complex, PJSC. • Polus Zoloto, PJSC; • UGMK-Holding, LLC; • Rusal, PJSC. • Siberian Coal Energy Company Kuzbass, PJSC; • NLMK, PJSC; 4 Dry and oil-insulated power transformers www.electroshield.ru By industrial enterprises • AvtoVAZ, PJSC; • Ljubertsy electromechanical plant, PJSC; • OP “Novomet-Neftejugansk”, • Sukhoy Civil Aircraft, CJSC; • Minsk tractor plant, PJSC; Novo-Met-Service, LLC. • IzhAvto, PJSC; • Tomsk Cable plant, CJSC; By enterprises of chemical and oil-refining industry • Akron, PJSC; • Moscow Oil Refinery, PJSC; • “LUKOIL-Volgogradnefteperabotka” • SIBUR-Holding, PJSC; • Saratov Oil Refinery, PJSC; Oil Refinery, LLC; • Achinsk oil refinery of Eastern oil • Yajsk Oil Refinery, LLC; • Siberian chemical plant, PJSC; company, PJSC; • Khabarovsk Oil Refinery, PJSC; • Sibneft-Omsk Oil Refinery, PJSC; • Syzran’ Oil Refinery, PJSC; • Mari Oil Refinery, LLC; • Kuybyshevazot, PJSC. • Kuybyshev Oil Refinery, PJSC; • Novo-Ufimsk Oil Refinery, PJSC; By transport and communication companies • State Unitary Enterprise “Moscow Metro- • Ufa International airport, PJSC; politan”; • “Mineralnye Vody” International airport; • Special Economic Zone “Aktau Seaport”; • Sabetta International airport, LLC; Foreign countries • Serbia; • Iraq; • Italy; • Oman; • UAE; • Libya; • France; • India; • Myanmar; • Egypt; • Angola; • Afghanistan; • Hungary; • Guinea; • China. • Croatia; • Benin; • Cuba; • Mongolia; By Nuclear Power Plants and other enterprises of nuclear power generation industry • 1st and 2nd power units of Kudankulam • Novovoronezh NPP; • Rosenergoatom, PJSC, Rostov NPP; NPP (India); • Bilibino NPP; • Federal State Unitary Enterprise “Angarsk • Smolensk NPP; • Kola NPP; electrolysis chemical plant”. • Belojarsk NPP; • Balakovo NPP; • Kursk NPP; • Kalinin NPP; www.electroshield.ru Dry and oil-insulated power transformers 5 INTRODUCTION ELECTROSHIELD SAMARA MANUFACTURES THE FOLLOWING VERSIONS OF THREE- PHASE OIL POWER TRANSFORMERS: TMG-SESH – sealed transformer without conservator. No-load voltage adjustment (NLTC). TMGF-SESH – sealed transformer without conservator with flanges on the cover for side busbars connection. No-load voltage adjustment (NLTC). TM-SESH – transformer with . No-load voltage adjustment (NLTC). TMN-SESH – transformer with the expansion tank. On-load tap changing. TMF-SESH – transformer with the expansion tank with flanges on the cover for side busbars connection. No-load voltage adjustment (NLTC). TMPNG-SESH – sealed transformer for power supply of submersible pumps, without expansion tank. No-load voltage adjustment (NLTC). TMPG-SESH – transformers for power supply of 24 pulse variable - frequency asynchronous valve electric drive with low-harmonics current option TNG-SESH, TNGF-SESH – power transformers for distribution networks 10 kV (with flanges on the cover for side busbars connection or without them) filled with fire retardant dielectric liquid. OL-SESH, OLS-SESH – low-power transformers. TLSZ-SESH – distribution dry-insulated cast resin transformers (power 25 - 100 kVA). May be completed with protective cover. TSLZ-SESH – distribution dry-insulated cast resin transformers (power 250 - 2500 kVA). May be completed with protective cover. Oil-insulated transformers are manufactured on advanced equipment using cutting-edge technologies: • magnetic core stacking using the five-stage STEP-LAP technology; • oil filling in vacuum chamber; • corrugated tank with powder coating; • automated quality control system. 6 Dry and oil-insulated power transformers www.electroshield.ru 11 SERIES TRANSFORMERS Due to higher quality design transformers of this series are lighter and more compact in comparison with transformers of previous series, while maintaining all basic advantages of previous series transformers. 12 SERIES ENERGY-EFFICIENT TRANSFORMERS In line with the worldwide trend of increase in cost of energy resources the issue of losses reduction in distribution transformers which make up major part of all power transformers fleet gains prime importance. Energy-efficient transformers have the lowest level of no-load and short circuit losses of all power transformers commercially available in the CIS. Technical specifications of these transformers are presented in ОRТ.135.020 ТI. The low level of losses is achieved through the use of more efficient materials resulting in increased price of the transformer, however this price increase is paid back in short time. Example of energy saving at daily average load of 0.7: • for a transformer with power of 400 kVA annual energy savings will amount to 7,500 kW/hour; • for a transformer with power of 630 kVA annual energy savings will amount to 5,800 kW/hour; • for a transformer with power of 1,000 kVA annual energy savings will amount to 5,200 kW/hour; • these figures become even more attractive at high medium transformer load. 14 SERIES TRANSFORMERS For technological processes with increased fire hazard, a very important role is played by the choice of electrical equipment with the use of fireproof materials. When choosing a transformer, preference can be given to transformers with dry insulation and transformers filled with flame retardant dielectrics. 15 SERIES TRANSFORMERS Transformers for reconciliation scheme and voltage. www.electroshield.ru Dry and oil-insulated power transformers 7 GENERAL INFORMATION Transformers are composed of the following main components: • case; • active part (carcass, windings, insulation, taps, switching device); • HV and LV bushing terminals; • control-measurement and protection apparatus. The transformer case is a metal welded rectangular structure consisting of the tank and the cover. The external design surface is painted with a powder painting of light color. The cover and the tank are connected by means of bolts. The joint is sealed with the oil and petrol resistant rubber gasket. The distribution transformer tank consists of the upper frame, corrugated walls and the bottom. Support beam channels are welded to the bottom. Corrugated