The incident took place in Nagulerugattu area in Pamarru when the children, using a iron rod, were trying to remove their kite which got stuck in the wire, Pamarru Sub-Inspector M Venkata Narayana told PTI.
The deceased were identified as Yesu Raju (11), John Babu (9) and Suresh (12). Raju and John are siblings.
The trio got badly burnt in the mishap, police said adding a case has been registered.