The company has invited bids from investors and bankers on Wednesday for the bond issue, they said.
The issue has a greenshoe option to retain an additional subscription of 10 billion rupees.
The bonds are rated AAA by CARE and the issue will be settled later this week.
($1 = 81.7800 Indian rupees) (Reporting by Bhakti Tambe; Editing by Sohini Goswami)
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