RM6 SeT gas-insulated switchgear is a medium voltage ring main unit product launched by Schneider Electric, specifically designed to meet the requirements of power distribution network operations and reliability. It is suitable for medium voltage secondary distribution networks up to 24 kV, as well as distribution stations for industrial and building users. According to the provisions of GB and IEC standards, it is fully insulated and sealed, and no gas refilling is required during the product lifecycle.
Sustainable
The main circuit has a service life of more than 40 years, maintenance-free during its lifecycle;
3mm 304 stainless steel gas compartment, ensuring extremely low gas leakage rate;
Switchgear does not require gas refilling during its lifecycle.
Safety
Three-position switch, natural interlocking, optional grounding visual window;
Safety valve at the rear of the switchgear prevents gas overpressure;
Integrated live cable interlock is provided.
Reliable
Over 40 years of R&D and manufacturing experience, with over 1.8 million units in operation by Schneider Electric;
Innovative composite material operating mechanism, resistant to salt spray corrosion, reduced maintenance;
Digital condition monitoring via IoT technology, connected to EcoStruxure asset management software for preventive and predictive maintenance;
Prevents unplanned power outages.
Flexible
Meets standardized design for power grid companies; flexible configuration, up to 6 units in a common enclosure;
Optional solutions include load switches, combined units, and vacuum circuit breakers;
On-site upgrades: quickly install coils, auxiliary contacts, electric operating mechanisms, and current transformers.
Interconnected
Provides a complete solution for easy digital upgrades;
IoT-based condition monitoring and sensing technology;
Easergy T300 can be distributedly installed in RM6 SeT ring main units;
Unlock preventive and predictive asset management functions;
Digital logbook QR code: access manufacturing information and installation and usage instructions for the ring main unit.
IEC 62271
GB /T 3906
GB/T 1984
GB/T 1985
GB/T 4208
GB/T 20138
GB/T 11022
Rated Voltage: Up to 24 kV
Frequency: 50 or 60 Hz
Rated Power Frequency Withstand Voltage: Phase-to-phase & Phase-to-earth: 42/65 kV; Break: 48/79 kV
Rated Lightning Impulse Withstand Voltage: Phase-to-phase & Phase-to-earth (1.2 μs): 75/95 kV 125 kV; Break: 85/110 kV 145 kV
Rated Busbar Current: 630 A
Rated Current of Load Switch: 630 A
Rated Current of Circuit Breaker: 200 A (for transformer protection), 630 A (for feeder protection)
Short-Time Withstand Current: Up to 20 kA for 4 seconds
Rated Peak Withstand Current: 50 kA
Enclosure Protection Level: Gas compartment: IP67; Mechanism compartment: IP4X; Low-voltage compartment: IP4X; Compartment-to-compartment: IP2X
Internal Arc Classification: Up to 20 kA AFLR, optional
Operational Continuity: LSC 2A
Mechanical Impact Protection Level: IK07
Insulating Medium: SF6
Relative Charging Pressure (20°C): 0.04 MPa
Functional Units
C Function: Grid connection, three-position load switch
F Function: Transformer protection, load switch-fuse combination unit
V Function: Grid or transformer protection, vacuum circuit breaker + three-position isolator
D Function: Grid connection, lifting unit
PT Function: Auxiliary power & measurement, voltage transformer compartment and metering compartment, three-position load switch
Environmental temperature: less than or equal to 40℃
Higher than or equal to -25℃ (Please consult Schneider Electric for low-temperature use)
Altitude: ≤ 1000m
Please consult Schneider Electric for altitudes above 1000m
Humidity: less than or equal to 95% (24 hours)
Less than or equal to 90% (1 month)
