![]() ![]() Using our test/disconnect terminals also reduces possibility of damage to Current Transformers. The solution to this problem is to installation of a Test Terminal Block (TTB) that allows for safe testing, disconnection of the equipment leaving CT’s securly short-circuited. To avoid personal injury or equipment damage, the secondary must always be short-circuited or connected to a burden. This may produce a high voltage across the open secondary into the range of several kilovolts, causing arcing, compromising operator and equipment safety, or permanently affecting the accuracy of the transformer. Care must be taken that the secondary of a current transformer is not disconnected from its load while current is in the primary, as the transformer secondary will attempt to continue driving current across the effectively infinite impedance up to its core saturation voltage. ![]()
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