Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Zagadnienia badawcze związane z wdrażaniem prac pod napięciem w krajowych sieciach 110 kV i wyższych napięć

100%

Mikulski J. L.

tom nr 10

617-620

Przedstawiono aktualną problematykę badawczą wynikającą z prowadzenia w sieciach 110 kV i wyższych napięć prac pod napięciem. Obejmuje ona próby elektryczne drążków izolacyjnych, ubiorów przewodzących oraz podnośników z wysięgnikami izolacyjnymi. Omówiono też procedurę oswajania monterów do tych prac.

Presented is the research range of problems connected with live line working on 110 (and morel kV networks. It comprises electrical tests of insulating sticks, conductive clothes and aerial lift devices with insulating arms. Discussed is also the procedure of acquainting the linemen with this type of works.

Study of Composite Insulator Sheds Subjected to Wheel Test

38%

Mackiewicz M. , Mikulski J. L. , Wańkowicz J. , Kucharski S. , Ranachowski P. , Ranachowski Z.

2017

tom Vol. 62, iss. 2A

679--686

The paper presents investigation of the properties of the surface and the material stiffness – flexibility of series of samples taken from the sheds of the composite insulators. The insulators were previously subjected to wheel test. The wheel test and 1000 h salt fog test are regarded as alternative examination of the material resistance to the effects of electrical surface discharges. There were investigated two series of the samples of the composite insulators sheds. Examined specimens, made of HTV silicone rubber, were taken from the sheds of medium-voltage composite insulators of two different manufacturers. Insulators of both types passed the 1000 h salt fog test without reservation. Meanwhile, the wheel test can provide a basis for better distinguishing between physical properties of the tested materials. In the case of the insulators of one of the manufacturers the wheel test result was negative. Cross puncture effect of the sheds took place in several places. In addition, sheds were covered with dark coating of varying thicknesses. The results of the study indicated a significantly stronger influence of electrical and temperature factors on the sheds under investigations during the wheel test than in the case of the 1000 h salt fog test. It can be stated that these tests cannot be considered as alternative and it seems that wheel test enables better distinguishing between properties of the materials.