Ring Main Unit RMU MV Switchgear Metal Enclosed Cabinet

11KV 24KV 630A 1000A 1250A SF6 Gas Insulated Switchgear GIS Panel / Ring Main Unit RMU Cabinet

Description
The SHRM6 series is completely insulated SF6 Ring Main Unit, This product is in conformitywith

the standards the IEC62271-200 & IEC62271-100 and the design of a high safety combined

switch cabinets.One of the main components of circuitbreaker and load break switch,high

technical level, superb technology, stable performance, safeand reliable operation.

Safe Ring and Safe Plus are respectively applied in SF6 insulated ring main and compactswitchgear in

high voltage distribution networks. Safering can be supplied as a 2,3 or 4-way standard configurations

with additional equipment accordingto customer specification. There are combinations of standard

configurations such as CF, CV, DV, DF, CCF, CCC,CFF, CVV, CCCC etc. SafeRing and Safe Plus

offers a sealed stainlesssteel tank which contains all the live components and switching functions.

SHRM6 series SF6 Ring Main Unit is widely used in industrial and civil ring network distribution

system and power supply terminal,especially suitable for small secondary distribution substation,

urban residential district, and other places

SHRM6 use SF6 – gas (Sulphur hexafluoride) as insulation and quenching medium.The SF6 is

contained in a welded stainless steel tank, which is sealed for life.Thepressure system is defined

as a sealed for life system with an operatinglife time exceeding 30 years. The leakage rate is less

than 0.1% per year. Electrical and mechanical bushings penetrating the tank are clamped and

sealed to the tank by high quality O-rings.

All SF6-tanks have to pass a leakage test before gas fill-ing.Leakage test and gas filling are done

inside a vacuumchamber. The first step in the leakage test is to evacuate all air inside both

SF6-tank and vacuum chambersimultaneously. The SF6-tankhas a degree of protection of

IP67 and can beimmersed into water and still maintainable functionsin a satisfactory way.

Working environment
a)Air temperature: ±40 ; Daily average ≤25°C ℃

b)Altitude above sea level: Maximum installation

altitude: 4000m

c)Wind: less than 35m/s;

d)Earthquake intensity: no more than 8 degrees.