Switchgear MV AIS – ATR
ATR is an air-insulated (AIS), metal enclosed medium-voltage (MV) switchgear, mainly used for secondary distribution power systems. It is also used in special configurations for primary distribution power systems. It is designed and standardized for indoor installations, in line with the IEC norm. It can be equipped either with gas-insulated load-break switches or with an air-insulated disconnector for compartments equipped with a switch, according to the different configurations.
Technical features
Front or back access
Installation of multi-brand breakers, vacuum or gas-insulated
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
Removable breakers and voltage transformers
Customized and settable digital counters and protection and control relays
Standard or digital synoptics
SCADA system integration
Integration of the thermal control system on bars and breakers, upon request
Integration of internal-arc protection systems, upon request
Integration of fast transfer systems, frequency and load-shedding control, upon request
Advantages
Tailor-made product
Interchangeable breakers
Remote control
Easy ordinary and extraordinary maintenance, thanks to front accessibility
High safety level for the operators involved
Short construction and delivery times
Applications
Oil & gas
Smart grid
Utility on primary distribution grids
Mobile substations
Photovoltaic plants
Wind power plants
Hydroelectric power stations
Other electric energy generation plants
Data Sheet ATR
-
-
Rated voltage
-
-
-
kV
-
-
-
12
-
-
-
17,5
-
-
-
24
-
-
-
36
-
-
-
Rated voltage at industrial frequency
-
-
-
kV (1min)
-
-
-
28
-
-
-
38
-
-
-
50
-
-
-
70
-
-
-
Impulse Test Voltage (BIL)
-
-
-
kV
-
-
-
75
-
-
-
95
-
-
-
125
-
-
-
170
-
-
-
Main bars rated current
-
-
-
A
-
-
-
400
-
630
-
1250
-
2000
-
2500
-
-
-
400
-
630
-
1250
-
2000
-
2500
-
-
-
400
-
630
-
1250
-
2000
-
2500
-
-
-
400
-
630
-
1250
-
2000
-
2500
-
-
-
Busbar
-
-
-
A
-
-
-
630
-
1250
-
-
-
630
-
1250
-
-
-
630
-
1250
-
-
-
630
-
1250
-
-
-
Short time rated current
-
-
-
kA (1s)
-
-
-
12,5
-
16
-
25
-
-
-
12,5
-
16
-
25
-
-
-
12,5
-
16
-
25
-
-
-
12,5
-
16
-
25
-
-
-
Rated frequency
-
-
-
Hz
-
-
-
50-60
-
-
-
50-60
-
-
-
50-60
-
-
-
50-60
-
-
-
IP Protection degree
-
-
-
-
IP4X*
-
-
-
IP4X*
-
-
-
IP4X*
-
-
-
IP4X*
-
-
-
Partition Class (switchghear classification)
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-
-
-
PM
partition
metallic
-
-
-
PM
partition
metallic
-
-
-
PM
partition
metallic
-
-
-
PM
partition
metallic
-
-
-
Loss of service continuity classes (LSC)
-
-
-
-
LSC2A
-
-
-
LSC2A
-
-
-
LSC2A
-
-
-
LSC2A
-
-
-
Loss of service continuity classes without switch device
-
-
-
-
LSC1
-
-
-
LSC1
-
-
-
LSC1
-
-
-
LSC1
-
-
-
Arc-proof version IAC AFL
-
-
-
kA (1s)
-
-
-
20*
-
-
-
20*
-
-
-
20*
-
-
-
20
-
*Up to IP54, upon request
* Arc-proof values are based on ATR 36kV
Related projects to Switchgear MV AIS – ATR
HV/MV Substation 110/34.5kV 2x25MVA
Varadero (Cuba)
The project has included the study, installation and supply of the electrical substation "Punta Hicacos".
MV Trasnformation cabin 36kV for rural areas
Kinshasa (Congo)
The project has included the installation of a prefabricated compact substation for the electrification of Congolese rural areas.
