Properties of rubber wood pressboard as insulating material in transformer application

Zulkhairi Ayop, . and Koh M.P., . and Zanuldin Ahmad, . and Tan Y.E., . and Shahanom Uthman, . (2006) Properties of rubber wood pressboard as insulating material in transformer application. [Proceedings Paper]

Using the wet processing technique pressboards were fabricated form matured rubber wood Hevea brasiliensis fibres. Three groups of pressboards were made according to the added content of phenol-formaldehyde resins: 1 Blank Group 25 T5 group and 3 10 T10 group. The material properties of the local pressboard were compared with the control group namely commercial pressboard that was made overseas and specifically designed for electrical transformer application. The material properties of the local pressboard and the commercial pressboards were determined in accordance to IEC 641-1 IEC 641-2 IEC 641-3 ISO 1924/1-2 ISO 2144 and ISO 287 standards. Using the commercial pressboard as reference the material properties of the local pressboards were measured. From the results the fabricated pressboards has passed about 58 to 67 from the tolerance range of IEC standard and were not suitable for electrical transformer design since they did not achieve the 100 passes. However the rubber wood fibres could be suitable for making pressboard if the it was made by machine and using multi layer thin structure with the correct formulation of phenol-formaldehyde resin.

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Abstract

Using the wet processing technique pressboards were fabricated form matured rubber wood Hevea brasiliensis fibres. Three groups of pressboards were made according to the added content of phenol-formaldehyde resins: 1 Blank Group 25 T5 group and 3 10 T10 group. The material properties of the local pressboard were compared with the control group namely commercial pressboard that was made overseas and specifically designed for electrical transformer application. The material properties of the local pressboard and the commercial pressboards were determined in accordance to IEC 641-1 IEC 641-2 IEC 641-3 ISO 1924/1-2 ISO 2144 and ISO 287 standards. Using the commercial pressboard as reference the material properties of the local pressboards were measured. From the results the fabricated pressboards has passed about 58 to 67 from the tolerance range of IEC standard and were not suitable for electrical transformer design since they did not achieve the 100 passes. However the rubber wood fibres could be suitable for making pressboard if the it was made by machine and using multi layer thin structure with the correct formulation of phenol-formaldehyde resin.

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Item Type:	Proceedings Paper
Additional Information:	6 ills. 7 tables. 10 refs.
AGROVOC Term:	RUBBER
AGROVOC Term:	WOOD
AGROVOC Term:	ELECTRICAL PROPERTIES
AGROVOC Term:	OWNERSHIP
AGROVOC Term:	APPLICATION METHODS
AGROVOC Term:	TECHNOLOGY TRANSFER
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:28
URI:	http://webagris.upm.edu.my/id/eprint/16920

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