Summary
Ring main units with two ring switch disconnectors and circuit breaker.
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Application
Ringmaster AirSeT design is the optimal choice for electrical distribution companies and distribution services, suitable for the following applications:
- Building and industries.
- Energy and infrastructure.
- Mining.
- Package substation.
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Description
Non-extensible (RN2Air) ring main units with two ring switch disconnectors and circuit breaker in pure air gas filled tank with pressure relief facility.
Features and benefits:
- IP54 degree of protection of the Ringmaster’s enclosure instead of housing makes it possible to be used in the most aggressive environment.
- No consideration needs to be taken for an external enclosure, saving cost compared to traditional solutions.
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Color
Grey
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Finish
Smooth
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Material
Metal
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Shape
Rectangle
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Length
1019 mm
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Width
866 mm
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Height
1800 mm
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SKU Code
RN2Air-T1 TLF
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Specification
Classification data
Standard
To IEC 62271-1, IEC 62271-200 and IEC 62271-201.
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Third-party certification
To ENA TS 41-41.
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Internal arc classification
To IEC 62271-200, Class AF.
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Mounting arrangement
Transformer-mounted., Free-standing.
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Switchgear arrangement
Non-extensible.
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Rated voltage (Ur)
12 kV.
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Rated frequency
50 Hz.
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Number of phases
Three.
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Rated insulation levels
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Rated short-duration power frequency withstand voltage (Ud)
28 kV for one minute., 38 kV for one minute.
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Rated lightning impulse withstand voltage (Up)
75 kV phase-to-phase, phase-to-earth., 95 kV phase-to-phase, phase-to-earth.
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Rated short-time withstand current (Ik)
21 kA for three seconds.
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Enclosure
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Ingress protection (minimum)
To BS EN 60529, IP54.
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Mechanical protection (minimum)
IK10.
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Colour
Grey.
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Cable entry
Direct coupling to transformer., Free-standing.
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Dimensions
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Width (maximum)
890 mm.
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Height (maximum)
1810 mm.
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Depth (maximum)
920 mm.
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Busbars
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Material
Bare copper.
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Rated continuous current (Ir)
200 A., 630 A.
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Ring switches
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Standard
To IEC 62271-102 and IEC 62271-103.
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Format
SF6-free, circuit breaker earth switch.
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Rated continuous current (Ir)
630 A.
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Rated short circuit making current (Ima)
52.5 kA.
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Switch class
E2.
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Operating mechanism
Independent manual., Motor operated.
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Circuit breaker
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Standard
To IEC 62271-100.
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Format
SF6-free, circuit breaker earth switch.
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Method of installation
Fixed.
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Rated continuous current (Ir)
200 A.
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Rated short circuit breaking current (Isc)
21 kA.
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Rated short circuit making current (Ima)
52.25 kA.
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Rated operating sequence
O – 3 min – CO – 3 min – CO.
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Circuit breaker class
E2.
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Operating mechanism
Independent manual., Motor operated.
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Additional properties
Protection
Time Limit Fuse (TLF).
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Indication
Pure air gauge, mechanism ON/OFF, mechanism EARTH/MAIN, on-off push button.
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Model
RN2Air-T1 TLF.
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Sustainability data
Material
Metal
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