TECHNICAL NOTES
Aug 1, 1999
Investigation into Cause of Failure of Lift Control Panel
Authors: Yoke Lin Tan and Kok Chye LiamAuthor Affiliations
Publication: Journal of Performance of Constructed Facilities
Volume 13, Issue 3
Abstract
A fire broke out in the lift control room of a new high-rise office tower block. The initiating source of the fire was traced to a lift group control panel and the area around the neutral incoming terminal of a circuit breaker. Laboratory inspection and metallographic examination also indicated that there was highly localized overheating at the neutral incoming terminal of a circuit breaker. The cause of the fire was attributed to the presence of a localized hot spot that was most likely due to a loose connection and/or the existence of a partially broken wire at the crimped end of the wire to the lug. Such factors are typically associated with poor workmanship during cable termination. Adherence to proper wire termination techniques and conducting a thermographic survey of the completed installation could have prevented the fire.
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References
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“Acceptance testing specifications for electrical power distribution equipment and systems.” (1995). NETA ATS-1995, NETA Technical Committee, Morrison, Colo.
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Sletbak, J., Kristensen, R., Sundklakk, H., Navik, G., and Runde, M. (1992). “Glowing contact areas in loose copper wire connections.” IEEE Trans. on Components, Hybrids, and Manufacturing Technol., 15(3), 322–327.
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History
Received: Apr 13, 1998
Published online: Aug 1, 1999
Published in print: Aug 1999
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Authors
Affiliations
Yoke Lin Tan
Kok Chye Liam
P.E.
Assoc. Prof. and Consulting Forensic Engr., School of Electr. and Electronic Engrg., Block S2, Nanyang Technol. Univ., Nanyang Ave., 639798 Singapore.
Proj. Mgr., MATCOR Technology & Services Pte. Ltd., 16 Science Park Dr., #03-04A The Pasteur, Singapore Science Park, 118227 Singapore.
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