Maximum faulty VVPAT machines changed in South Delhi constituency

The maximum number of VVPAT machines which faced glitches were changed in the South Delhi Lok Sabha constituency while the minimum were replaced in the Northeast segment which delayed the poll process Sunday, EC officials said.

An Electronic Voting Machine (EVM) comprises of three parts - the Control Unit (CU), the Ballot Unit (BU) and the Voter Verified Paper Audit Trail (VVPAT) machine.

Officials said the VVPAT machines are extremely sensitive to light and heat and being a new technology, glitches arose which delayed voting at some places.

At the Nirman Bhawan polling booth, where several VVIPs including Vice President Venkaiah Naidu cast their votes, technical snags in the EVM arose thrice before it was changed.

Officials said there was a connection error between the EVM's BU and CU.

Sources in the poll panel said the problem with the EVM first arose at 7.30 am, then at 9.30 am and again at 10.30 am which delayed voting.

The Election Commission officials said that overall, 61 BUs, .