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
*Up to IP54, upon request
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