Suburban electric trains and long distance express services were crippled between Chennai Beach and Tambaram on Saturday morning owing to a disruption in power supply.

Southern Railway sources said the disruption took place on the supply lines between the 110-KV sub station of Tamil Nadu Generation and Distribution Corporation Ltd. at Kadaperi and a receiving transformer at Tambaram railway station from where power was supplied to the trains through overhead tractions.

According to a TANGEDCO official, a supply line to the overhead traction snapped, but they had provided power supply through an alternate route.

According to a Southern Railway engineer, they stopped receiving power supply all of a sudden and they were not aware of the cause as the problem was outside the jurisdiction of the railway.

He added the disruption was between 8.10 a.m. and 9.25 a.m. and that the movement in both directions – towards Beach and Tambaram – were affected.

Train delayed

This also resulted in problems on signals on the main line. Electric trains moved at snail's pace and the Ananthapuri Express was delayed.