CGIS Series current mutual inductors are epoxy-cast fully enclosed through-core current mutual inductors, featuring high precision, large capacity and stable performance. They are used for current and energy measurement as well as relay protection in power systems of 40.5kV and below. The maximum height of the product is 400mm. The height of the product can be adjusted according to the number of secondary windings of the product. It is particularly suitable for CGIS series gas-filled switchgear and can also be used for other types of switchgear. The rated insulation level of the product is 0.72/3kV, and the primary main insulation is guaranteed by the cable.