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Literatúra a softvér

Literatúra a softvér

Technická knižnica Megger vám dáva prístup k širokému zoznamu odbornej literatúry, ako sú aplikačné príručky, aplikačné články a ďaľšie. Zároveň tu nájdete na stiahnutie aktualizácie prístrojových a PC softvérov pre vybrané produkty. Použite filtre pre vyhľadanie špecifického obsahu (napr. aplikačné články) alebo spresnite vyhľadávanie výberom konkrétnej aplikačnej oblasti. 

Pre získanie pristupu ku Softvéru a k Aplikačným príručkám (en), prosím vytvorte si užívateľský účet .

Ostatná časť Technickej knižnice je dostupná bez registrácie.

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    Zobrazované položky 11 - 20 z 28 celkovo
Pre-locating faults with alternative method to arc reflection
While the share of installed cables without a jacket generally continues to decrease, the unjacketed cables that remain continue to age. As they do so, it is increasingly likely that a fault will develop on these cables. It can be particularly troublesome to locate faults on unjacketed cables as normal Time Domain Reflectometry, or radar, based fault location techniques often do not work, due to the corrosion of the neutral wires. While there is no guaranteed action that would result in locating the fault, this paper will outline some advanced methods, based on field experience, that can help when locating these types of faults. This paper was an article presented at NETA in 2017 and will discuss the Impulse Current method, which does not rely on the neutral wires being intact, in both a theoretical and practical light. 
Uverejnené: 27 marca 2018
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Lessons learned from a 400 kV busbar misoperation utilizing the IEC 61850 standard
This paper discusses the investigation of the tripping of a 400 kV substation due to improper operation of a bus-bar protection scheme.
Uverejnené: 27 marca 2018
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Modern ART (Accuracy in Resistance Testing)
This paper will demonstrate the advantages of applying a variable low frequency AC waveform and, using temperature-to-frequency conversion techniques developed, and also the ability to correct any resistance value automatically to a to a known temperature corrected result.
Uverejnené: 27 marca 2018
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Offline PD diagnostics using several excitation voltages
Diagnostics on both MV and HV cables is used as part of commissioning tests to check the quality of workmanship of newly installed cables and accessories. This paper goes into detail to all available excitation voltages for offline PD diagnostics.
Uverejnené: 27 marca 2018
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Oil-paper insulation voltage dependency during frequency response analysis
Dielectric Frequency Response, DFR is the extension of power factor testing except that the measurement is performed from 1 kHz down to typically 1 mHz. It is a very useful tool for evaluating the moisture content in solid insulation of HV and EHV components such as power transformers, bushings, instrument transformers and PILC cables.
Uverejnené: 27 marca 2018
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Frequency to temperature domain of transformer liquid insulation
The dielectric response of the overall transformer insulation is an invaluable source of information for those involved in the manufacture, operation and maintenance of power and distribution transformers. One of the greatest advances in the use of the transformer insulation dielectric response is without a doubt the possibility of performing advanced diagnostics of the oil-paper insulation to determine the moisture concentration of the solid insulation and the quality of the liquid insulation.
Uverejnené: 27 marca 2018
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Individual temperature compensation
Dielectric testing techniques in the time and frequency domains are increasingly being used by transformer manufacturers, power utilities and researchers for transformer oil-paper insulation systems condition assessment.
Uverejnené: 27 marca 2018
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Individual temperature correction (ITC) for insulation resistance measurements
The value of insulation resistance (IR) is strongly affected by the temperature of the material. However, in most cases IR measurements are done at the operating temperature of the given device. For this reason temperature correction is required to ensure that meaningful conclusions can be drawn from the measured values of IR
Uverejnené: 27 marca 2018
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Innovative test and diagnostic system for medium voltage cables – PD monitored withstand testing versus non-destructive Partial Discharge (PD) diagnosis
For testing and partial discharge (PD) diagnostic purposes many different test voltage wave shapes and frequencies have been established over the past years. Their application is well proven and is guided by IEEE 400 norm.
Uverejnené: 27 marca 2018
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Investigations on a combined resonance/VLF HV test system – partial discharge (PD) characteristics at VLF and DAC voltages
The necessity of HV cable testing is a given fact. So far, two testing methods, 24 hour soak or resonance testing are commonly used. This paper describes a comparison of test power demand dependent from voltage shape and test capacitance as well as the power consumption of test systems for different test techniques.
Uverejnené: 27 marca 2018
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  • Zobrazované položky 11 - 20 z 28 celkovo