Advent of fixed type disconnecting circuit breakers in Medium Voltage secondary switchgear: A new arrangement of main circuit functions for simpler and safer operation

摘要

The purpose of this paper is to challenge some well-known arrangements of devices like racking trucks, disconnectors, circuit breakers and earthing switches. A new single line diagram will be proposed, more in accordance with needs and expectations of users and future trends in breaking and disconnection techniques. It will be taken in account elements as necessity to implement alternative solutions to SF6 gas, generalization of fixed type switchgear for Medium Voltage secondary applications, usage of disconnecting load-break switches or disconnecting circuit-breakers, and the never-ending quest of improving users safety and network efficiency.