KYN61-40.5 is suitable for three-phase AC 50Hz, 40.5 kv single-bus and single-bus subsection power systems, mainly used in power plants, substations and industrial and mining enterprises, high-rise buildings as receiving and distributing power, and the circuit control, protection and monitoring, this product conforms to IEC 60298, GB/T3906, DL/T404 and other standards.