Ring Main Unit

The SF6 insulated Ring Main Unit is used for electrical distribution, switching and protection, Although the RMU operates conventionally, it is able to provide high protection and security for the operation personnel and maintenance is minimal. The RMU is small and compact in design, allowing it be easily integrated with existing grids and making it easy for cable connection. It offers an economical and reliable solution to network owners due to its well-designed features and low maintenance requirement, The RMU operates at temperatures from -20C to +50C and a climatic change does not affect its performance. The medium of insulation used for the RMU is sulphurhexafluoride , which is widely used gas for insulation in most medium and high-voltage switchgears. The RMU consists of 4 main sections: HV compartment, Drive Mechanism, Circuit Breaker Mechanism and Cable Compartment. The RMU has been tested and conforms to the requirements of IEC 62271-200, IEC 62271-105, IEC 60265-1, IEC 298, 60694, 529 & 129 from the International Electro technical Committee (IEC)