Ti Anode Fabricators Pvt. Ltd. Offers Conventional Transformer Rectifier Unit. Ti Anode Fabricators Pvt. Ltd. Is an ISO 9001:2008 certified company. The Conventional Transformer Rectifier Unit is a DC current device which supplies current that is applied for cathodic protection of buried or immersed metal structures. The TR is normally used when AC power from the mains is available. The Conventional Transformer Rectifier Unit can be used in indoor and outdoor locations and are capable of supplying continuous full rated output at an ambient temperature up to +60 Celsius degrees.