instrument transformer / current / encapsulated / toroidal
TCC / TCCN
toroidal, DIN rail mount, wall-mount
Max.: 6,000 A
Min.: 40 A
The TCC/TCCN current transformer can be fixed directly to a cable with screws, or to either a DIN rail or wall by an accessory. With this double terminal entry design, short circuit links can be fitted in the event that the measuring instrument needs disconnected from the transformer without causing damage to the transformer. This design also allows for easier termination to the ground. When the transformer is used for protection relays as a current generator, it has electrical characteristics that make it different than measuring transformers. The measuring current transmitter is expected to give a saturation of the magnetic circuit in primary currents with 5P. With the protective transformer, it’s essential that the second current value follows the primary current increase up to 10, 15, 20, etc. This ensures relay intervention in the event of an unexpected breakdown.