Flexible current coil, also known as a Rogowski coil, is useful for testing objects, on which hard clamps cannot be attached. In the measurements of alternating current, flexible coils are connected directly to the meter, whereas for earth resistance testing - the operators additionally use ERP-1 adapter.

With the 5-pin termination, they are connected directly to the power quality analyzers. It is available with different levels of the output signal and different lengths. The rated current of this product is 3000 A and the diameter of the enclosed conductor is maximum 235 mm.