Technical Data 1.Rated frequency 50Hz or 60Hz . 2.They are used for over driven current protection in the electric non-useful-ground neutral system up to rated voltage 35KV . 3.The type of the relay fitting with the transformers is DD-11/60. 4.Because the cable protects the primary main insulation , so , the insulation characteristics of secondary winding are only examined . The secondary winding can be able to withstand the power frequency test voltage of 3KV to ground.Note: If users have special requirements , they may be subject to an agreement between manufacturer and purchaser.
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