https://www.engineeringnews.co.za

Quick Turnaround Achieved On Rotor Rewind For Sugar Mill Alternator

9th February 2016

  

Font size: - +

This article has been supplied.

Marthinusen & Coutts  (0.02 MB)

Company Announcement - Marthinusen & Coutts recently performed a rush job for sugar producers Tongaat Hulett in repairing the rotor of the 20 MW salient pole synchronous alternator at its Xinavane mill near Maputo, Mozambique. The division carried out the complex task at its Cleveland, Johannesburg, facility in just over three months. It involved a complete rewind of the rotor, which has a cruciform-type winding configuration.

“It was complicated by the fact that we found it necessary to redesign the winding and insulation,” Craig Megannon, general manager at Marthinusen & Coutts, explains.

“The original coil had developed a fault due to the fact that it had been vacuum pressure impregnated, which by forming it into a solid block caused differential expansion between the copper windings and the steel of the rotor body. We solved this problem by introducing thicker insulation and thinner copper windings, which were neither VPI’d nor glued to the pole body. “This achieved the desired result, as proven by the tests we carried out on the rotor windings on completion of the job,” Megannon says.

With 57 years of extensive experience in the local and global market, Marthinusen & Coutts undertakes both electrical and mechanical repairs, overhauls and complete refurbishments.

Edited by Creamer Media Reporter

Article Enquiry

Email Article

Save Article

Feedback

To advertise email advertising@creamermedia.co.za or click here

Latest News

Showroom

Trotech
Trotech

Design, Construction and Maintenance of Site Erected, Welded Bulk Storage Tanks for the Petrochemical, LNG, Ammonia and Sustainable fuel Sectors.

VISIT SHOWROOM 
Condra Cranes
Condra Cranes

ISO-certified Condra manufactures overhead cranes, portal cranes, cantilever cranes and crane components: hoists, drives, end-carriages, brakes and...

VISIT SHOWROOM 

Latest Multimedia

sponsored by

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION







301

sq:0.046 1.019s - 143pq - 2rq
Subscribe Now