Tata Power-DDL receives patent for transformer moisture protection device

Tata Power Delhi Distribution Ltd on Monday said it has received a patent for self-regenerating transformer breather for 20 years. The ‘Self-Regenerating Breather’ is a device protecting a transformer from moisture ingress and thus, increases the longevity of electric transformers, the company said in a statement.

According to the statement, Tata Power Delhi Distribution Ltd (Tata Power-DDL), a leading power utility supplying electricity to over 2 million customers in North Delhi, has been granted the patent for its unique self-regenerating transformer breather for a term of 20 years.

The patented technology is also expected to reduce the maintenance man-days for replacement of Silica gel in a transformer’s breather to protect it from moisture damage, the statement said. With the new technology, Silica gel will be required to be checked or replaced only during the transformer maintenance schedule, which is generally once in two years. In contrast, in the conventional design, Silica gel needs to be replaced 4-6 times before a maintenance schedule of 2 years, it said.

Tata Power DDL’s Engineering team developed and successfully tested the ‘self-regenerating breather’ in December 2015, it said.