"transformer oil"相关例句(20)
2.The paper analyses the influence on the analysis of transformer oil chromatogram induced by different sampling oil spot when conventional analysis of transformer oil chromatogram or on-line analysis of transformer oil chromatogram.
5.STUDY ON PRODUCTION OF 25~# TRANSFORMER OIL FROM DISTILL-ATE OIL WITH HIGH ACID VALUE BY FURFURAL REFINING PROCESS
7.This paper introduces the development process and new trends of transformer oil chromatographic analysis technique at home and abroad in terms of the gas circuit system of chromatograph, degassing approach, data processing, diagnostic technique of transformer faults as well as the development and application of chromatograph on-line monitor, etc.
8.An abnormal increase of transformer oil dielectric loss in service and its cause were introduced, and the treatment process to make the dielectric loss to reach standard was summarized, based on the experience of operation and overhaul.
9.An experiment unit for high-temperature and high-velocity erosion corrosion was designed and constructed. The erosion experiment was conducted on this unit of Cr5Mo Steel in transformer oil with an acid value of 8.3 mgKOH/g at conditions of 230～248 oC and flow velocity of 47 m/s.
10.During adjustment and trial operation in Lingao Nuclear Power Station the main and auxiliary transformers have some problems, including the abnormal action of gas relay, total hydrocarbon of the transformer oil and acetylene contents exceeding the standards, crack of O-shape seal ring for load-tap.
12.Electromagnetic winding, motor, high temperature transformer, electric tools, special electromotor, refrigeration compressor, oil immersed transformer, etc.
13.Research on Vibration Characteristics of Windings and Core of Oil-Filled Transformer
14.The oil leakage reasons of oil-immersed power transformer are analysed. The features of fibre cork rubber and its application in omni-sealed transformer are introduced.
15.Application of XDK High Efficient Adsorbent on Oil Treatment of EHV Transformer in Dayawan Nuclear Power Station
16.This type of combined transformer consists of two single-phase all-insulated voltage transformers and two current transformers, divided into two types—oil-immersed type and dry type, its primary and secondary outlet terminals are led out respectively through insulating porcelain jacket, outside the transformer tank there is equipped with electric meter box, which can be installed integrally with the combined transformer or hung up separately.
17.This paper dissertates by the numbers the feasibility that the heat pipe technology applies in oil-immersed transformer, sums up the latest national inside and outside research fruits, puts forward an new scheme applying heat pipe in the transformer, sets up the way and the model of calculation according to the 10-kVA electrical transformer and designs a program written in VC++ language to calculate the temperature rise of the heat pipe transformer.
18.Based on examples, the problems in reinstallation process of oil pump, tap-changer and bushing after transformer maintenance overhaul are analyzed. The measures to prevent the problems are presented.
19.According to the operation characteristics of 500 kV natural oil circulationtransformer,the cooler control circuit of ODFSZ-250000/500 transformer in Tan Jiawan substation is analyzed,and the reforming scheme is proposed.
20.The newly-increased annual production capacity in 1998 through capital construction projects included: 3.51 million tons of coal mining, 16.9 million kilowatts of power generation by large and medium-sized generators, 47.26 million kilovolt-amperes of power transformer equipment (including 7.79 million kilovolt-amperes of updated power grid in urban and rural areas), 13.78 million tons of oil extraction, and 2.4 billion cubic meters of natural gas. The year 1998 also saw the operation of 900 kilometers of new trunk railways, 596 kilometers of double-track railways, 995 kilometers of electrified railways, 1,478 kilometers of newly constructed express highways, 14.0 million tons of cargo-handling capacity of coastal harbors, 30,000 kilometers of long distance optical-fiber cable and 10,000 kilometers of newly constructed microwave digital telecommunication lines.
