Switchgear MV GIS – ATR Ring

ATR -Ring is a metal enclosed switchgear for the medium-voltage (MV) secondary distribution, consisting of a SF6 gas-insulated (GIS) sealed stainless-steel container. It is used in power grids with ring configuration and it is available either in compact or in modular versions.

Technical features

Closure sealed integrity throughout its entire lifecycle
Installation on base frame or on concrete basement
Operators’ safety during operations and maintenance according to Leg. Decree no. 81/2008 and legislation IEC 62271-200
Protection and control relay and customized and settable digital counters
Standard or digital synoptic
Digital option to reduce wiring in order to maximize performance
SCADA system integration

Advantages

Compactness and reduced dimensions
Modularity and configuration flexibility
Tailor-made product, integrating the accessories required by the client
High reliability and reduced operator interventions
High safety level for the operators involved

Applications

Oil & gas
Railway sector
Smart grid
Utility on primary distribution grids
Mobile substations
Photovoltaic plants
Wind power stations
Hydroelectric power stations
Other electric energy generation plants

Data Sheet ATR-Ring

- Rated Voltage
- kV
- 12
- 17,5
- 24
- 36

- Rated Voltage insulation
- kV (1min)
- 28
- 38
- 50
- 70

- Impulse Test Voltage (BIL)
- kV
- 75
- 95
- 125
- 170

- Main bars rated current
- A
- Up to
  1250
- Up to
  1250
- Up to
  1250
- Up to
  630

- Short-time rated current
- kA (1s)
- Up to
  25
- Up to
  25
- Up to
  25
- Up to
  20

- Rated frequency
- Hz
- 50-60
- 50-60
- 50-60
- 50-60

- IP Protection degree
- IP4X*
- IP4X*
- IP4X*
- IP4X*

- Partition Class (switchghear classification)
- PM
  partition
  metallic
- PM
  partition
  metallic
- PM
  partition
  metallic
- PM
  partition
  metallic

- Loss of service continuity classes (LCS)
- LSC2
- LSC2
- LSC2
- LSC2

- Loss of service continuity classes without switch device
- LSC1
- LSC1
- LSC1
- LSC1

- IAC class including cable box compartment and external busbar compartment
- IAC
  AF-FL
  FLR
- IAC
  AF-FL
  FLR
- IAC
  AF-FL
  FLR
- IAC
  AF-FL
  FLR

*Up to IP54, upon request

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