At present, the measure of Tan delt

At present, the measure of Tan delta for oil impregnated
kraft paper in PILC cables is only gross measurement by using
very low frequency (VLF) and power frequency in which the
MUT is usually several to tens of meters long of medium
voltage (MV) power cables. These measurements have no way
to determine the localized aging of the insulation material as
the paper is in a form of strip with width and thickness of
about 2.8 cm and tenth of a millimeter only. In order to make
localized measurement in the laboratory, a new sample holder
is needed for the samples. As the dimensions of the samples
are very small hence the high frequency technique to
determine the complex permittivity is more suited as available
equipment such as the network analyzer can be employed for
the measurement at a much lower cost.

ผลลัพธ์ (แอฟริกา) 1:

Op die oomblik is, die mate van Tan Delta vir olie deurtrek
kraftpapier in PILC kabels is slegs bruto meting deur die gebruik van
'n baie lae frekwensie (VLF) en Power frekwensie waarin die
MUT is gewoonlik 'n paar tot tien meter lank van Medium
Voltage (MV) Power. kabels. Hierdie metings het geen manier
om die plaaslike veroudering van die isoleringsmateriaal Bepaal as
die papier is in 'n vorm van strook met breedte en dikte van
2,8 cm en oor tiende van net 'n millimeter. Ten einde te maak
gelokaliseerde meting in die laboratorium, 'n New Holder monster
is nodig vir die monsters. As die dimensies van die monsters
is baie vandaar die klein hoë frekwensie tegniek om
Bepaal die komplekse permittiwiteit is meer geskik as beskikbaar
Toerusting soos die Network Analyzer Kan aangewend word vir
die meting op 'n veel laer koste.