A trip on a 275 kV power line in northern Perak in Malaysia resulted in many parts of the country losing power for three hours on 18 November.

Tenaga Nasional Bhd (TNB), Malaysia’s national electricity company, said that a preventative system within its power distribution channel prevented a longer outage. The company said: “The breakdown triggered TNB’s Automatic Under Frequency Load Shedding Scheme, which prevented a longer outage.” The outage affected Kuala Lumpur, and the states of Malacca, Negri Sembilan, Selangor, Johor, Penang, Perak and Kelantan, comprising 70 per cent of peninsula Malaysia.

This three hour outage follows on from the 16 hour outage suffered by peninsula Malaysia is August 1996, and the two-day outage suffered in 1992. A spokesman for TNB said that the increased speed of restoration demonstrated the improvements the company had made.