Switchgear MV AIS – Normal Clad
Medium Voltage AIS Metal Clad Switchgear - NORMAL CLAD - Special features up to IP65. Air Insulated (AIS) switchgear, fitted with metallic segregated compartments and withdrawable main components (circuit breaker, voltage transformers, protection relays). It is designed for primary distribution grids and can be supplied as standard or Internal Arc-Classified IAC AFLR. For outdoor use (mines, Oil & Gas) can be design in special features with a protection degree up to Ingress Protection IP 65 and configuration Duplex,Double Busbars Systems.
Technical features
Protection degree from IP4X for indoor applications, up to IP65 for outdoor applications
Simple or double busbar system, double top with two breakers and other customizable configurations available
Front access
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
Multi-brand air or SF6 gas insulated breakers applicated on withdrawable carriage
Withdrawable breakers and voltage transformers
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
Integration of 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
Railway sector
Naval sector (installations)
Smart grid
Utility on primary distribution grids
Mobile substations
Photovoltaic plants
Wind power stations
Hydroelectric power stations
Other electric energy generation plants
Data Sheet Normal Clad
Rated Voltage
kV
12
17,5
24
36
40,5
Rated Voltage insulation
kV (1min)
28
38
50
70
85
Impulse Test Voltage (BIL)
kV
75
95
125
170
200
Main busbar rated current
A
Up to
4000
Up to
4000
Up to
3600
Up to
3150
Up to
2500
Main bars rated current
A
1250
2000
2500
3150
3600
4000
1250
2000
2500
3150
3600
4000
1250
2000
2500
3150
1250
2000
2500
3150
1250
2000
2500
Short time rated current
kA (3s)
up to
50
up to
50
up to
40
up to
40
up to
31.5
Rated frequency
Hz
50-60
50-60
50-60
50-60
50-60
IP Protection degree
IP4X*
IP4X*
IP4X*
IP4X*
IP41
Loss of service continuity (LSC)
LSC2B
LSC2B
LSC2B
LSC2B
LSC2B
Arc-proof version IAC AFLR
kA (1s)
25
25
25
25
25
Up to IP65, upon request
Up to IP65, upon request
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