General Description:
• The Air-insulated Ring Main Unit is a factory built, metal-encapsulated switchgear, prewired and tested, eliminating technical coordination problems and ensuring short delivery time and simple erection.
• Local work is limited to the connection of external power cables.
• The Ring Main Unit is designed for either indoor or outdoor installation.
• The Ring Main Unit is mainly used in secondary distribution.
• It integrates from 1 to 4 load-break switches for cable or transformer, an earth fault indicator and an arc extinguishing device.
6. The Ring Main Unit also has the option for installing Metering devices.
Main Features
• High operating reliability
• Simple maintenance and inspection
• No isolating partitions
• High dynamic and thermal strength
• Encapsulated extinguishing device
• Current interruption without visible arc
• High number of operation, simple mechanism
• Easy cable connection
• Possible to be connected with any SCADA system
Approval:
12 & 24 KV Ring Main Units passed all necessary tests carried out in The Egyptian Electricity Authority Pyramids High Voltage Research Center and approved from The Egyptian Electricity Holding Company.
Standards:
The Ring Main Unit is designed, manufactured and tested in conformity to the latest standards• IEC 60271-200
• IEC 60694
• IEC 60271-102
• IEC 62271-105
• DIN VDE 0670
Compact Design
Modular Design
