TechnoStorm

KUCHING BLACKOUT CAUSED BY MAMBONG TRANSMISSION FAULT, SAYS SEB

KUCHING, July 18 (Bernama) -- The power blackout that affected most parts of

Kuching city this afternoon was caused by a transmission fault at Mambong near

here when one of the two 275 kv transmission lines tripped unexpectedly, Sarawak

Energy Berhad (SEB)’s Grid System Operator, Mr Yong Ying Poh said today.

He said SEB had started investigations to find the underlying cause of

today''s incident which occurred when one of the lines connecting Engkilili to

Mambong was taken out of service at 11.47am for urgent replacement of a failed

capacitor voltage transformer and the remaining circuit tripped unexpectedly at

2.12pm due to a line fault.

“SEB acknowledges the community’s understandable frustration as a result of

today’s event and deeply regret the inconvenience and disruption caused to our

consumers in Kuching," he said in a statement here.

He said SEB''s maintenance crews were working to complete the replacement job

so that the other circuit can be back to service immediately, with full load

restored to all affected areas by 5pm.

Since the second line tripped, he said, the only source of supply to Kuching

was from the Sejingkat and Tun Abdul Rahman power stations, which do not have

sufficient capacity to meet demand in Kuching without support from elsewhere in

the state.

"To keep the system stable, it was therefore necessary to turn off supply

to some areas around Kuching for up to 45 minutes at a given time,” he said,

adding that information from its probe would be used to continue improving the

standard of reliability in Sarawak.

-- BERNAMA

CJ JRL

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