High Reliability Customizable Ring Main Unit-17.5kV

General Information

Cost-Effective Side & Rear Cable Entry RMU, its cables enter and exit from the side and rear, and there are no cable entries or exits on the front.
It is fully weatherproof with IP54 for outdoor or indoor applications.

It is extensible and highly flexible unit used in a wide range of applications including distribution switchboards, transformer substations, ring distribution networks and high voltage connections to industrial & commercial sites. The units are developed to suit customer requirements for connection, supply, protection and sectionalization.

SF6 insulated with vacuum circuit breaker protection lateral and rear cable termination, SF6 gas insulated RMU.

It is a completely sealed system with a stainless-steel tank containing all live parts and switching functions.

A sealed steel tank with constant atmospheric conditions ensures a high level of reliability as well as personnel safety and a virtually maintenance-free system.

It can be supplied as a 3-way or 4-way configurations with additional equipment according to customer specification. It can be freely combined according to customer configurations (Such as CVC, CCV, CVV, CFF, CCC, VVV, CCVV etc.). They are suitable for most switching applications in 10/24 kV distribution networks.

The concept offers a choice of either switch-fuse combination or circuit-breaker with relay for protection of the transformer. It can be supplied with an integrated remote control and monitoring unit.

This product is in conformity with the standards: IEC62271-200, IEC60420.

Product Features

• Fully interlocked operaon with padlocking facility ensure operator safety and prevent incorrect operation.
• Freestanding and transformer mounted type.
• Adjustable stainless steel legs.
• IP54 for outdoor installaon without requiring a kiosk.
• All operations are from the front of the units.
• Includes fully extensible and non-extensible options for secondary distribution applications up to24 kV and 630 A ratings.
• Internal arc protection including cable boxes. Extensible from both the sides.
• Maintenance free and low environmental impact.
• Locally-mounted lightning arresters.

Technical Parameters

Service Environment

• Air temperature: Maximum temperature: +45℃; Minimum temperature: -20℃.
• Humidity: Monthly average humidity 95%; Daily average humidity 90%.
• Altitude above sea level: Maximum installation altitude: 2500m.
• Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
• No frequent violent shake.

Switchgear Size