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SEL - Model TPR6 24 -GIS Ring Main Unit for Secondary Distribution
The TPR6 24 by SEL is a gas-insulated ring main unit designed for secondary distribution networks, handling voltage levels of up to 24kV. Engineered for both safety and reliability, it integrates all essential switching operations required across voltage lines of 7.2kV, 12kV, 17.5kV, and 24kV, ensuring service continuity even in fault conditions. Its construction is notable for a 'sealed for life' design, encased within a stainless steel tank that isolates all live components and switching mechanisms from external elements, thus warranting enhanced operational reliability and personnel safety. The unit adeptly manages electrodynamic stresses during operation, with user interfaces such as operating mechanisms, movable mimics, and voltage signaling lamps located on the front panel. Spring-operated mechanisms facilitate switch operations, while fuses and cable compartments are accessible via an interlocked front door, offering additional safety features. The auxiliary low voltage compartment is conveniently positioned above the main unit, enhancing overall functionality.
TPR6 is a complete ring main unit range suitable for all the switching operations in 7.2kV, 12kV, 17.5kV, 24kV, secondary distribution network.
Operating safely in a distribution network requires different switching points to obtain maximum service continuity in case of fault on the network.
TPR6 is a completely “sealed for life” system with a stainless steel tank containing all live parts and switching devices. A hermetically sealed steel tank from the outside environment ensures a high level of reliability as well as personal safety. The structure can withstand the electrodynamics stresses during the operation.
The operating mechanism, movable mimic and voltage signaling lamps are positioned in the front panel. Switches are operated by means of spring-operated mechanisms.
Movable mimic gives the position of the switch whereas the voltage signaling lamp indicates the voltages. Fuses and cable compartment are easily accessible through the front door which is interlocked with the earth switch. Should the low voltage auxiliary compartment be present, it is situated above the ring main unit.
- Power supply companies.
- Power stations.
- Cement industry.
- Automotive industry.
- Iron and steel works.
- Windmills.
- Mining industry.
- Textile, paper and food industries.
- Chemical industry.
- Petroleum industry.
- Pipeline installations.
- Offshore installations.
- Electrochemical plants.
- Petrochemical plants.
- Shipbuilding industry.
- Diesel power plants.
- Emergency power supply installations.
- Lignite open-castmines.
- Traction power supply systems.
- Insulation Voltage : Up to 24 kV
- Rated Frequancy : 50 – 60 Hz
- Rated Short time withstand current Ik : Up to 25 kA
- Rated duration of short circuit tk : 1 – 3 s
- Degree of protection on front face : Indoor : IP 3X – 41
- Outdoor : IP 54 – 55