TDK Corp. has expanded its CCT series of clamp AC current sensors with two new types that are rated for 300 A and 80 A. The new sensors are designed for use in the power-distribution panels in a variety of energy-management systems. With a current transformation ratio of 3000:1 the 300-A and 80-A types offer maximum output currents of 100 mA and 26.6 mA, respectively. The new clamp AC current sensors have an integrated open-circuit protection element for voltage peak suppression.
The 300-A type features a clamp inner diameter of 24 mm and is suitable for high current applications such as the energy-management systems (EMS) in buildings, factories, and stores (BEMS, FEMS, SEMS). It achieves its high current rating thanks to its optimized sensor shape and the high-performance ferrite material developed especially for current sensors. The 80-A type employs the same material as the existing 100-A and 30-A types of the CCT series products. Its clamp inner diameter is 10 mm.
Thanks to their snap-on clamp design, CCT current sensors can be quickly and easily installed in existing power distribution panels. Mass production of the new types will begin shortly.
