Rogowski coils have some features that make them very different from standard current transformers. The most remarkable ones are that: 1.- The output they provide is in mV. 2.- They provide the proportional value of the current, but shifted 90º. 3.- They do not saturate. Hence, when we use a Rogowski coil in combination with a measuring or protection device, we need to place some electronics to integrate the signal and second we need to adapt the standard current input which traditionally has been …/1A or …/5A to support a 100mV signal. When these electronics and the power supply for running it are inside the measurement or protection device that is connected to the Rogowski, we talk about passive Rogowski coils, because the Rogowski itself does not need to have electronics on them and they do not need to have an external power supply. Our Smartflex Series of Rogowski coils, flexible CTs or flexible current sensors are ideal for retrofit or new installations, because they can be installed quickly and easily in any electrical installation, without the hassle of interrupting the electrical circuits. They have been engineered with a handle and an open connector to make installation easy. At the same time, they measure the AC current with a full rejection of the DC component, very low temperature dependence and an excellent linearity.

Passive Rogowski coil with 25 cm of perimeter, 8mm section and 8cm diameter. Output Ratio 37mV/1kA @50HZ

Optionally in IP65. Consult.