VACUTAP VR THE ALL-AROUND ON-LOAD TAP-CHANGER. TRANSFORMER CONTROL

Transcription

1 VACUTAP VR THE ALL-AROUND ON-LOAD TAP-CHANGER. TRANSFORMER CONTROL

2 VACUTAP VR. VACUTAP VR I HD VACUTAP VR PROFIT FROM LOW TOTAL COST OF OWNERSHIP. 2

3 With the introduction of vacuum technology in on-load tap-changers in the late 1980s, we were pioneers in this field. Since then, this technology has seen consistent further development. The result: on-load tap-changers of the VACUTAP series that are used with great success worldwide. VACUTAP VR on-load tap-changer In 2006, VACUTAP VR and VV were the first built-in on-load tap-changers worldwide to enable 300,000 tap changes without maintenance. No periodic maintenance is prescribed. Concretely speaking, this means maintenance-free performance for nearly all network applications. The VACUTAP VR I HD, which was developed specifically for heavy-duty industrial applications, even performs 600,000 switching cycles between maintenance. These longer maintenance intervals mean higher availability of transformers, less process downtime and lower costs for you over the entire useful life. MR vacuum switches are used in steel and aluminum smelters around the world as well as on drilling rigs in areas that pose an explosion hazard or in chemical operations with a corrosive or dirty environment. This is because MR is the first and only manufacturer of on-load tap-changers to have VV and VR tap changers certified in accordance with Directive 94/9/EC (ATEX) (conforms to IEC and NEC 505 in North America). The VACUTAP VR on-load tap-changer convinces users around the world through its flexibility. It proves its value in everyday use, such as for frequent switching of overcurrents or for extreme requirements for transformer availability. The scope of application of the VACUTAP VR also includes auto transformers, regulation at the beginning of delta windings and hermetically sealed transformers. VACUTAP VR I HD on-load tap-changer The VACUTAP VR I HD was optimized specifically for applications with an above-average number of tap-change operations and ensures precise switching operations under the toughest conditions. This includes furnace operation as well as applications such as electrolysis, phase shifters or HVDC (high-voltage direct current) transmission. 3

4 VACUTAP VR. VACUTAP VR I HD VACUTAP VR Robust and versatile for any application. Our on-load tap-changers of the VACUTAP VR family offer you unbeatable reliability and efficiency. Ideally suited for applications in power transformers, the VACUTAP VR is a real alternative to conventional oil tap changers. Including all of the advantages of vacuum technology. Environmentally friendly technology sustainability in everyday use The VACUTAP VR distinguishes itself with its environmentally friendly vacuum technology. In contrast to conventional oil circuit engineering, this ensures that no arcing occurs in the insulating oil. Therefore, no oil filter unit is required in operation. Additionally, this new generation of tap changers is designed for use with selected alternative insulating fluids. Benefits: I No arcing in the tap-changer oil I No oil filter unit needed I Clean oil makes maintenance work easier and faster Maintenance work I Substantially reduced frequency of maintenance compared to conventional oil circuit engineering An added bonus: The switching capacity remains constant throughout the entire operating life of the vacuum interrupters. The vacuum level in the tubes is improved even further during switching operations because the metal vapor plasma generated by the arc from the contact material binds with free gas molecules (getter effect). There is also no oxidation on the contact surface, thereby ensuring consistently good contact resistance. 4

5 VACUTAP VR I HD DEVELOPED FOR THE HIGHEST SWITCHING FREQUENCIES. Industrial applications place the most stringent requirements on transformer availability. The VACUTAP VR I HD enables you to minimize downtime and achieve the best possible utilization. Take advantage of less frequent maintenance intervals The new VACUTAP VR I HD is not subject to timebased maintenance; rather, it has a maintenance interval of 600,000 switching operations. Replacement of the diverter switch insert is only necessary after 1.2 million switching operations. This means even lower operating costs, coupled with the highest quality and the highest environmental and safety standards. you profit from less process downtime and maximum productivity. Tested by MR maximum safety during long-term operation We have also consistently implemented the strict MR safety philosophy during the development of the VACUTAP VR I HD. In our globally unique Testing Department, it was tested in mechanical and electrical service life tests well beyond the requirements of IEC standards. For example, switching performance tests were carried out with 600,000 switching operations instead of the required 50,000 switching operations. 5

6 VACUTAP VR. VACUTAP VR I HD VACUTAP VR A comparison of types and models. Types and variants for VACUTAP VRC, VRE / OILTAP M, RM VRC VRE Um kv Um kv U im : 3300 V U im : 4000 V VACUTAP OILTAP VACUTAP OILTAP 3-phase 3-phase VRC III 400Y M III 350Y VRC III 550Y M III 500Y VRC III 700Y M III 600Y VRE III 700Y RM III 600Y 2-phase VRC II 402 M II 352 VRC II 552 M II 502 VRC II 702 M II phase 1-phase VRC I 401 M I 351 VRC I 551 M I 501 VRC I 701 M I 601 VRE I 701 RM I 601 VRC I 1001 M I 802 VRE I 1001 RM I 1201 M I 1203 VRC I 1301 M I 1203 VRE I 1301 RM I 1201 Um kv Um kv Number of tap selector plane pairs (total tap selector planes): 3 (6) 2 (4) 1 (2) Types and variants for VACUTAP VRD, VRF, VRG / OILTAP R Um kv Um kv VRD VRF / VRG 1) U im : 3300 V U im : 4000 V VACUTAP OILTAP VACUTAP OILTAP 3-phase 3-phase VRD III 1000Y R III 1200Y VRF III 1000Y R III 1200Y VRD III 1300Y R III 1200Y VRF III 1300Y R III 1200Y 2-phase VRF II 1302 R II phase 1-phase VRF I 1001 R I 1201 VRD I 1301 M I 1203 VRF I 1301 R I 1201 R I 1201 VRF I 1601 R I 2002 VRF I ) R I ) Um kv Um kv Number of tap selector plane pairs (total tap selector planes): 3 (6) 2 (4) 1 (2) 1) VRG: identical variants to VRF, but with tap selector size "E" 2) Forced current splitting by two parallel winding branches required 6

7 On-load tap-changer designations Type VACUTAP VRC VRC VACUTAP VRE VACUTAP VRD VACUTAP VRF VACUTAP VRG VRE VRD VRF VRG Number of phases 1 phase I 2 phases* II 3 phases* III I um (in A) VRC 400 VRC 550 VRC, VRE 700 VRC, VRE, VRD*, VRF, VRG 1000 VRC, VRE, VRD, VRF, VRG 1300 VRF, VRG* 1600 VRF, VRG * 2600 Number of parallel 1 (3-phase Y)* 0 main switching contacts 1 (1-phase) 1 2 (1-phase)* 2 Applications For use in neutral point only Y U m (in kv) VRC, VRE, VRD, VRF, VRG 72.5 VRC, VRE, VRD, VRF, VRG 123 VRC, VRE, VRD, VRF, VRG 170 VRC, VRE, VRD, VRF, VRG 245 VRC, VRE, VRD, VRF, VRG 300 VRF, VRG 362 Tap selector size VRC B VRC, VRE, VRD, VRF C VRC, VRE, VRD, VRF D VRC, VRE DE VRG E Number of max operating positions without changeover selector Number of max operating positions with change-over selector Mid-positions 0 mid-positions (without change-over 0 selector) 1 mid-position 1 3 mid-positions 3 Change-over Reversing change-over selector W selector Coarse tap connection G Tie-in measures Tie-in resistor R Potential switch S Potential switch with tie-in resistor P Example VRF III 1300 Y 72.5 / C G / Basic connection diagram R *) not available for on-load tap-changer VR I HD 7

8 VACUTAP VR. VACUTAP VR I HD VACUTAP VR and VACUTAP VR I HD Technical data. On-load tap-changers Description VRC III 400Y VRC III 550Y VRC III 700Y VRC II 402 VRC II 552 VRC II 702 VRC I 401 VRC I 551 VRC I 701 VRC I 1001 VRC I 1301 VRE III 700Y VRE I 701 VRE I 1001 VRE I 1301 VRD III 1000Y Number of phases and application 3 1) 3 1) 3 1) ) ) Max. rated throughcurrent I um (in A) Rated short-time current (in ka) Rated duration of short-circuits (in s) Rated peak withstand current (in ka) Max. rated step voltage U im (in V) 2) Step capacity P StN (in kva) Rated frequency (in Hz) Operating positions without change-over selector: max. 18, with change-over selector: max. 35 1) Neutral point 2) The maximum rated step voltage may be exceeded by 10 % due to overexcitation of the transformer if the step capacity is not exceeded Step capacity diagram 1) VRC/VRE and VRC/VRE I HD kva Rated step voltage U i [V] VRC III 400 Y, VRC II 402 VRC I 401, VRC I HD 401 VRC III 550 Y, VRC II 552 VRC I 551, VRC I HD 551 VRE III 700 Y VRE I 701 VRE I HD 701 VRC III 700 Y, VRC II 702 VRC I 701, VRC I HD kva Rated through-current I u [A] VRE I 1001 VRE I HD 1001 VRC I 1001 VRC I HD 1001 VRE I HD 1301 VRE I 1301 VRC I HD 1301 VRC I ) For electrical arc furnace operation, please observe the step capacity diagrams in the technical data of the VACUTAP VR on-load tap-changer. 7

9 VRD III 1300Y VRD I 1301 VRF III 1000Y VRG III 1000Y VRF III 1300Y VRG III 1300Y VRF II 1302 VRG II 1302 VRF I 1001 VRG I 1001 VRF I 1301 VRG I 1301 VRF I 1601 VRG I 1601 VRF I ) VRG I ) VRC I HD 401 VRC I HD 551 VRC I HD 701 VRC I HD 1001 VRC I HD 1301 VRE I HD 701 VRE I HD 1001 VRE I HD 1301 VRD I HD 1301 VRF I HD 1001 VRG I HD 1001 VRF I HD 1301 VRG I HD ) 1 3 1) 3 1) without change-over selector: max. 18, with change-over selector: max. 35 4) 3) Forced current splitting by two parallel winding branches required 4) VRC in special design with multiple coarse change-over selector up to max. 107 positions Step capacity diagram 1) VRD, VRF, VRG 2) und VRD/VRF/VRG 2) I HD Rated step voltage U i [V] kva 3000 kva VRF III 1000y VRG III 1000y 3750 kva 6000 kva VRG I 1001 VRF I 1001 VRG I HD 1001 VRF I HD 1001 VRG I 1301 VRF I 1301 VRG I HD 1301 VRF I HD 1301 VRF III 1300y VRG III 1300y VRF II 1302 VRG II 1302 VRF I 1601 VRG VRD III 1000y VRD III 1300y VRD I 1301 VRD I HD VRF I 2602 VRG I 2602 Rated through-current I u [A] 1) For electrical arc furnace operation, please observe the step capacity diagrams in the technical data of the VACUTAP VR on-load tap-changer. 2) VRG: Identical versions as VRF but with tap selector size "E"

10 VACUTAP VR. VACUTAP VR I HD UNSHAKAbLE QUALITy. Earthquake test of the VACUTAP VR on-load tap-changer in the test center of the IABG 10

11 The VACUTAP VR offers you the highest quality and precision even under the most extreme conditions. The testing and analysis center of the IABG has confirmed that the VACUTAP VR even withstands earthquakes. In a complex test program, static load tests, various earthquake tests and extensive calculations were carried out on the on-load tap-changer using a Finite Element Model. All tests were carried out in accordance with the following standards: I IEC , German edition EN 60068, Part 3-3, Environmental testing; Seismic test methods for equipment; Guidance I IEC , German edition EN 60068, Part 2-6, Environmental testing; Test Fc and Guidance: Vibration sinusoidal I IEC , German edition EN 60068, Part 2-59, Environmental testing; Test Fe and Guidance: Vibration sine-beat method I IEC , German edition EN 60068, Part 2-57, Environmental testing; Test Ff and Guidance: Vibration time-history method I IEEE 344, Recommended practice for seismic qualification of class 1E equipment I IEEE 693, Recommended practice for seismic design of substations I IEC 60980, Recommended practices for seismic qualification of electrical equipment of the safety system for nuclear generating stations I UBC, Uniform Building Code, chapter 16, division IV I IBC, International Building Code I Eurocode 8, Design of structures for earthquake resistance I RCC-E Section B, Seismic qualification and approval I Transelec, ETG-A.0.20; Consideraciones Antisismicas I IEC 1166, Guide for seismic qualification of high-voltage alternating circuit-breakers I KTA , Design of Nuclear Power Plants against Seismic Events I JIS S 1018, Japanese Industrial Standard, test methods of vibration and earthquake Guaranteed earthquake-proof confirmed by the testing and analysis center of the IABG. 11

12 VACUTAP VR. VACUTAP VR I HD ENVIRONMENTALLy FRIENDLy AND FORWARD-LOOKING. A future trend in transformer technology has kept our developers busy: the increasing demand for higher fire safety, greater compatibility with the environment and largely maintenance-free performance. We have found a solution. It is based on the connection of our VACUTAP technology with alternative insulating fluids. Alternative insulating fluids with natural esters are made from plants such as rapeseed, soy, sunflower or coconut. Filtering these fluids and adding additives results in a high-quality electrical insulating fluid that provides exactly the advantages that will be required in the future. Fireproof A variety of fluids is available on the market that fulfill fire protection requirements (class K fluids with a flashpoint > 300 C to IEC 61100). The natural esters seem particularly advantageous in this regard. Permitted VACUTAP tap changers: VACUTAP VR : VRC 400/550/700, VRC I 1001/1301 VRE 700; VRE I 1001/1301 Permitted oil temperature ( C) for tap-changer operation On-load tap-changer type Synthetic esters Natural esters VACUTAP VRC/VRE -18 to to +115 Water hazard class* Mineral oil 1 HMWH 1 Silicone oil 1 Synthetic esters 0 Natural esters 0 * Classification in accordance with the German Administrative Regulation on the Classification of Substances hazardous to waters into Water Hazard Classes (VwVwS), Germany 1999: WGK 0 = non-hazardous to water, WGK 1 = low water hazard Permitted ester fluids: I Synthetic ester: I Natural ester: MIDEL 7131 (M&I) ENVIROTEMP 200 (Cargill) ENVIROTEMP FR3 (Cargill) biotemp (Abb) biodegradable The environmental friendliness (biodegradability) of a material can be evaluated by, for example, its classification into a water hazard class. Ester fluids have an advantage in this regard because they are classified as "non-hazardous to water". Flashpoint ( C) (ASTM D92, Open Cup) Class K fluids, flashpoint > 300 C to IEC Mineral oil High molecular-weight hydrocarbons Synthetic esters Natural esters Silicon oils Please note: The use of VACUTAP tap changers in conjunction with ester fluids is a special application. Our experts will work with you to clarify the possibilities for the specific application. 12

13 VACUTAP VR your FUTURE IS MAINTENANCE-FREE. Maintenance-free and long-lasting I 300,000 reliable switching operations for the VACUTAP VR normally make maintenance unnecessary in grid operation I Longer maintenance intervals for the VACUTAP VR I HD of 600,000 switching cycles means even lower operating costs in electrical arc furnace operation Maximum operational reliability I Tested in mechanical and electrical service life tests well beyond the requirements of IEC standards. I Suitable for use in hazardous areas in accordance with Directive 94/9/EC (ATEX) (conforms to IEC and NEC 505 in North America) I Earthquake-proof performance confirmed by the testing and analysis center of the IAbG Low life cycle costs I Thanks to state-of-the-art vacuum technology, maintenance work is faster and easier and only minimal disposal costs for dirty insulating fluids arise. I Support in cost-conscious transformer planning with TAPMODELLER Designed with future requirements in mind I VACUTAP VR I HD can be retrofitted in all previously delivered VACUTAP VR I units I Designed for use with alternative insulating fluids 13

14 Maschinenfabrik Reinhausen GmbH Falkensteinstrasse Regensburg, Germany Phone: Fax: info@reinhausen.com Please note: The data in our publications may differ from the data of the devices delivered. We reserve the right to make changes without notice. IN /00 EN VACUTAP VR F /13 uw Maschinenfabrik Reinhausen GmbH 2013 THE POWER behind POWER.