The disruptions to the North East Line and the Sengkang-Punggol LRT (SPLRT) lines on Aug 12 was due to a «double fault» scenario which occurred in a voltage transformer for one of two interconnected switchboards at the Sengkang Depot Substation — an occurrence described as «rare».The Land Transport Authority (LTA) and SBS Transit (SBST) said this in a statement on Saturday (Aug 16), providing updates on the power fault incidents which occurred on Aug 12 and Aug 15.In the case on Aug 12, which occurred at 11am and lasted for about three hours, the two faults occurred at the voltage transformer for Switchboard 2, the statement read.The first involved a high current surge due to a fault in the voltage transformer, while the second was a dislodged cable connecting to the voltage transformer. Read more