SF6 DOS Non DOS RMU Panel

An SF6 RMU (Ring Main Unit) Panel is a fully sealed, compact, and maintenance-free medium-voltage switchgear used for 11kV / 22kV / 33kV power distribution networks. It uses SF6 gas insulation, which ensures high dielectric strength, arc-quenching capability, and reliable operation under all environmental conditions. RMUs are available in DOS (Direct Operated Switch) and Non-DOS types, depending on operational requirements.

Key Features

• Rated Voltage: 11kV / 22kV / 33kV

• Rated Current: 630A (standard)

• Short Circuit Withstand: up to 21kA / 25kA for 3 seconds

• Configuration Options:

  • DOS (Direct Operated Switch) type

  • Non-DOS type (with motorized/remote operation)

• Compact, gas-insulated, tamper-proof design

• Maintenance-free with hermetically sealed SF6 tank

• Interlocking provided for operator safety

• Indoor / Outdoor weatherproof enclosures

Applications

• State electricity boards & DISCOM distribution networks

• Industrial plants & process industries

• Renewable energy projects (solar/wind evacuation)

• Smart cities, metros, airports, and infrastructure projects

• Residential layouts & commercial complexes

Advantages

• Ensures continuous power supply with ring main system

• Quick fault isolation without disrupting entire network

• Long service life with minimal maintenance

• High operational safety due to SF6 insulation

• Space-saving, compact, and easy to install

Optional Accessories

• SCADA compatibility for smart grid integration

• Motorized operation for remote control

• Digital metering & protective relays

• Surge protection devices

• Alarm and fault indication systems