Enerswit+ Conventional Ring Main Unit
The Enerswit+ Conventional Ring Main Unit is UTEC's reliable, fixed-configuration medium-voltage switchgear designed for secondary power distribution networks. Built for dependable manual operation, it delivers proven switching and protection performance across a wide range of installation environments, from urban substations to industrial facilities and outdoor switch bays. Manufactured to IEC standards and compliant with Saudi Energy (SE) specifications, it is a compact, SF6 gas-insulated RMU suited for utilities, developers, and industrial operators who require straightforward, cost-effective MV switching without automation requirements.
Key Product Features
Reliable Manual Operation
The Enerswit+ Conventional RMU features spring-operated manual load break switches and vacuum circuit breakers with mechanical interlocking, ensuring safe, reliable switching for routine distribution network operation. Its straightforward design minimizes operational complexity and reduces commissioning time.
SF6 Gas-Insulated Construction
All live high-voltage components are enclosed in a robot-welded stainless steel gas tank filled with SF6 gas at low pressure. This sealed gas-insulated design protects against dust, moisture, and environmental contamination, making it suitable for both indoor and outdoor deployment in demanding climates.
Compact and Flexible Configurations
Available in 3-way and 4-way non-extensible configurations with multiple L (Load Break Switch) and T (Circuit Breaker) combinations, the Enerswit+ Conventional RMU adapts to a variety of ring network topologies. Its compact footprint reduces civil work requirements and simplifies installation at constrained sites.
Built for Long Service Life
With a design service life of 30 years and annual SF6 leakage rate of less than 0.01%, the Enerswit+ Conventional RMU is engineered for low total cost of ownership. The sealed gas chamber requires no scheduled gas top-up throughout the product lifecycle, reducing maintenance demands significantly.
Proven Performance
21 to 25 kA Short-Circuit Withstand
Rated for a short-time withstand current of 21 kA for 1 second at 17.5 kV and 24 kV, and 25 kA for 1 second at 36 kV, ensuring reliable fault tolerance and robust performance in demanding distribution network applications.
IP54 Outdoor Enclosure
IP54 protection rating on the outer enclosure and IP67 on the gas tank enables indoor and outdoor installation across diverse environments.
IEC & SE Compliant
Conforms to IEC 62271-200, IEC 62271-102, IEC 62271-103, IEC 62271-105 and SE standard 32-SDMS-01, ensuring regulatory acceptance across the region.
Maintenance-Free Design
Sealed SF6 gas chamber with annual leakage rate below 0.01% eliminates the need for gas refilling across the full 30-year service life.
Enerswit+ Conventional RMU: Simple, Proven, Dependable
For projects requiring manual reliable medium-voltage switching, the Enerswit+ Conventional RMU delivers the right balance of technical performance, build quality, and operational simplicity. It is backed by UTEC's manufacturing expertise and regional after-sales support across Saudi Arabia and the wider Middle East.
TECHNICAL DATA
