
Ring Main Unit

NEPEAN Power RMU’s offer a unique, customisable solution for your medium and high voltage applications.
The RMU’s are gas insulated, with MV components contained within a stainless steel tank.
Standard switchgear options include:
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Load Brake Switch (LBS)
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Circuit breaker (VCB)
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Fuse/s and bus bar
NEPEAN Power RMU’s are suitable for rated frequency 50/60Hz and rated voltage 12kV distribution networks. It is designed for use in the following applications, but not limited to: compact secondary substations, small industries, wind power plants, hotels, shopping centres, office buidlings, business centres, airports, hospitals, underground railways.
NEPEAN Power RMU’s are type tested to IEC 62271-201 and IEC62271-304 ensure a compliant solution to your MV distribution needs.
Features
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Rated voltage (12kV)
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Rated frequency (50Hz)
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Rated current (LBS/ Combination Apparatus)(630/100A)
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1min P.F withstand voltage (Phase to phase, phase to earth) (42kV)
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1min P.F withstand voltage (Disconnect gap)(49kV)
Working Condition
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Ambient temperature: -40°C ~ +45 °C (average temperature ≤ 35°C)
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Altitude: ≤3000m
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Humidity: Daily average ≤95%, daily average water vapor pressure ≤2,2KPa, monthly average ~90%, monthly average water vapor pressure ≤1.8KPa
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The electromagnetic interference value in the second system will not exceed 1.6kY.
Note: Customised products are available.