TY  - JOUR
T1  - Suitability of Nigerian Paper Products as Insulating Materials for High Temperature Machine Operations
AU - Obiazi, A.M.O. AU - Otubu, P.A. AU - Anyasi, F.I. 
JO  - Journal of Engineering and Applied Sciences
VL  - 4
IS  - 1
SP  - 100
EP  - 102
PY  - 2009
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2009.100.102
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2009.100.102
KW  - Paper products
KW  -impregnation
KW  -insulation
KW  -samples
KW  -temperature
KW  -Nigeria
AB  - Electrical insulating materials are required to maintain electrical and mechanical integrity sufficiently to prevent turn-to-turn or turn-to-ground shorts during operation, particularly at elevated temperatures. In this study, 10 sample varieties of Nigerian paper products were experimented upon to evaluate their suitability for use as electrical machine insulating materials for high temperature operations. Impregnated samples of the paper products were subjected to heat-run in a sealed industrial oven. The insulation resistance of each given sample was measured at regular temperature intervals, until the sample burns out. Tables show the values of weight, insulation resistance and temperature. Curves were plotted to show the variation of insulation resistance with temperature. From the results, all the paper samples could not produce insulation resistance above 8 MΩ at a temperature of 90°C while, at 110°C, they were all burnt. Thus, they are only suitable as electrical insulating materials for lower temperature operations, below 90°C.
ER  -