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C-SEC

Ring Main Unit · CSG O

SF6-Insulated Outdoor Ring Main Unit

For secondary distribution points outside conventional switchrooms, C-SEC lists an outdoor SF6-insulated RMU product family. Correct specification begins with the electrical scheme and the environmental conditions in which the equipment must operate.

12 kV17.5 kVOutdoorEngineering review
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C-SEC CSG O outdoor ring main unit on mounting frameCSG O on mounting frame · catalogue photograph

01

Practical installation needs

Outdoor RMU selection involves equipment protection, accessible switching, safe separation, civil foundations, cable routing and service access. Those site parameters are as important as the core electrical ratings.

02

Network applications

Use an approved schematic to demonstrate ring feeder switching, transformer protection and possible automation functions within the specific product lineup.

03

Environmental qualification

Publish actual IP and environmental/temperature data, not generalized claims such as 'weatherproof under all conditions.'

04

Testing and documentation

Explain what type-test and routine-test evidence is available for the model and how a buyer can request it.

05

Next step

Share your outdoor site requirements and single-line diagram with C-SEC's engineering team.

Features

General characteristics

  • 01SF6-insulated compact switchgear
  • 02Equipped with SF6 switch disconnector
  • 03Equipped with vacuum circuit breaker
  • 04Modular or compact versions
  • 05Internal arc resistant
  • 06SCADA-compatible motorised unit, on request
  • 07Stainless steel tank
  • 08Developed according to IEC 62271-200

As listed in the C-SEC MV Switchgear Catalogue (2022).

Typical functions · 2 LBS + 1 CB

Select a unit

LBSLoad-break switchLBSLoad-break switchCBCircuit breaker

Typical arrangement drawn from the catalogue's typical functions. Your project configuration comes from the network SLD.

Available modules (catalogue): LBS · CB · M

Specifications

Technical data

Catalogue model · CSG O

Technical data from the C-SEC Medium Voltage Switchgear Catalogue (2022, QMS/FRM/SDM/72-04 R2 Issue 05)
CharacteristicUnit12 kV17.5 kV
Electrical data
Rated voltagekV1217.5
Lightning impulse withstand (1.2/50 µs)kV peak7595
Power-frequency withstand (50 Hz, 1 min)kV rms2838
Rated currentA630630
Rated short-time currentkA rms21 (3 s)21 (3 s)
Short-circuit making currentkA peak52.552.5
Mechanical & service
Protection degree—RMU IP54 · Tank IP67
Standard colour—RAL 7012
Ambient temperature°CBasic −5 … +40; option −10 … +55
Dimensions (2 LBS + 1 CB)
Heightmm1755
Widthmm840
Depthmm1125

Source: C-SEC Medium Voltage Switchgear Catalogue (2022, QMS/FRM/SDM/72-04 R2 Issue 05). Technical characteristics vary by model and project configuration — refer to the latest approved C-SEC datasheet.

Engineering review

Documents

Technical documents

Only approved files are published. Project-specific documents are shared on request.

Questions about the Outdoor SF6 RMU

Civil interface requirements depend on the supplied enclosure and approved GA.

Only validated, supported variants should be described as motorisable.

Enquiry

Project-specific quotation

Share the key electrical parameters and the required panel functions for a technical review.

Typical applications

01 · Contact
02 · Equipment
03 · Project details

Fields marked * are required. Please do not share confidential network layouts.

Related equipment

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