Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.

Grease products recommended by OEM for conventional 11kV switchgears are generally trusted. Some disadvantages might however exist among them or their supply could be insufficient and lead to use of non-OEM-recommended grease. This paper reports analysis methods to evaluate both types of grease that...

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Main Authors:	Mohd Sabri, Mahmud, Sanuri, Ishak, Mohd Najib, Razali, Mohd Aizudin, Abdul Aziz, Musfafikri, Musa
Format:	Article
Language:	English
Published:	IIUM, Malaysia 2019
Subjects:	TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/25546/ http://umpir.ump.edu.my/id/eprint/25546/ http://umpir.ump.edu.my/id/eprint/25546/ http://umpir.ump.edu.my/id/eprint/25546/1/Full%20Paper%20Mahmud-2019.pdf

id	ump-25546
recordtype	eprints
spelling	ump-255462019-08-01T08:15:06Z http://umpir.ump.edu.my/id/eprint/25546/ Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing. Mohd Sabri, Mahmud Sanuri, Ishak Mohd Najib, Razali Mohd Aizudin, Abdul Aziz Musfafikri, Musa TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Grease products recommended by OEM for conventional 11kV switchgears are generally trusted. Some disadvantages might however exist among them or their supply could be insufficient and lead to use of non-OEM-recommended grease. This paper reports analysis methods to evaluate both types of grease that were recently used in the switchgears at local electrical distribution stations owned by Tenaga Nasional Berhad. Hardened, greenish and severely irritating greases probably caused by incompatible compounding, electrochemical reaction, and hazardous components, respectively, were among common problems faced by workers. Eight physical tests and four chemical tests were conducted on 10 grease samples using thermogravimetry, switchgear rig, gas chromatography and infrared spectroscopy besides other equipment and standard methods. Grease stability, oil bleeding, flammability of grease droplet and dropping point were among the characteristics determined in the analyses. The results reveal copper corrosion, chemical change, instable and inconsistent grease, and toxics in grease, which surprisingly included the OEM-recommended one. IIUM, Malaysia 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25546/1/Full%20Paper%20Mahmud-2019.pdf Mohd Sabri, Mahmud and Sanuri, Ishak and Mohd Najib, Razali and Mohd Aizudin, Abdul Aziz and Musfafikri, Musa (2019) Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing. IIUM Engineering Journal, 20 (1). pp. 216-228. ISSN 1511-788X https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/995 DOI: https://doi.org/10.31436/iiumej.v20i1.995
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery
spellingShingle	TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Mohd Sabri, Mahmud Sanuri, Ishak Mohd Najib, Razali Mohd Aizudin, Abdul Aziz Musfafikri, Musa Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
description	Grease products recommended by OEM for conventional 11kV switchgears are generally trusted. Some disadvantages might however exist among them or their supply could be insufficient and lead to use of non-OEM-recommended grease. This paper reports analysis methods to evaluate both types of grease that were recently used in the switchgears at local electrical distribution stations owned by Tenaga Nasional Berhad. Hardened, greenish and severely irritating greases probably caused by incompatible compounding, electrochemical reaction, and hazardous components, respectively, were among common problems faced by workers. Eight physical tests and four chemical tests were conducted on 10 grease samples using thermogravimetry, switchgear rig, gas chromatography and infrared spectroscopy besides other equipment and standard methods. Grease stability, oil bleeding, flammability of grease droplet and dropping point were among the characteristics determined in the analyses. The results reveal copper corrosion, chemical change, instable and inconsistent grease, and toxics in grease, which surprisingly included the OEM-recommended one.
format	Article
author	Mohd Sabri, Mahmud Sanuri, Ishak Mohd Najib, Razali Mohd Aizudin, Abdul Aziz Musfafikri, Musa
author_facet	Mohd Sabri, Mahmud Sanuri, Ishak Mohd Najib, Razali Mohd Aizudin, Abdul Aziz Musfafikri, Musa
author_sort	Mohd Sabri, Mahmud
title	Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
title_short	Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
title_full	Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
title_fullStr	Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
title_full_unstemmed	Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
title_sort	grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.
publisher	IIUM, Malaysia
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/25546/ http://umpir.ump.edu.my/id/eprint/25546/ http://umpir.ump.edu.my/id/eprint/25546/ http://umpir.ump.edu.my/id/eprint/25546/1/Full%20Paper%20Mahmud-2019.pdf
first_indexed	2023-09-18T22:39:17Z
last_indexed	2023-09-18T22:39:17Z
_version_	1777416805707415552

Grease quality issues on middle voltage switchgear: corrosivity resistivity safety and ageing.

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