Home Product Switchgear Air Insulated MV Switchgear

SwitchgearAir Insulated MV Switchgear (AIS) 12kV

General Description
  • IEC 62271, ANSI/IEEE Std C37, NEMA

  • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA

  • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369

  • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1

  • High altitude correction per IEC 62271 & IEEE C37, ~ 5000m

  • Modular and Robust design for low maintenance and critical power application

  • SF6 free switchgear, vacuum circuit breaker for safe, compact and reliable solutions 

Typical Specification

Air Insulated MV Switchgear (AIS) 12kV

General rating


Rated voltage

12kV

Lightning impulse withstand voltage (BIL)

75kV

Power frequency withstand voltage (1 min)

42kV

Rated frequency

50/60Hz

Internal arc class

AFLR 50kA/1s

Loss of service continuity category

LSC2B

Partition class

PM

Earthing circuit

25/31.5/40/50kA-4s

Accessibility of compartments


Circuit breaker compartment

Interlock-controlled

Busbar compartment

Tool-based/non-accessible

Cable compartment

Tool-based or Interlock-controlled

External degree of protection

IP4X  

Internal degree of protection

IP2X

Installation

Indoor

Temperature classification

-15 to +40°C

Relative humidity (max)

95%

Busbar system


Rated normal current

630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000AFC[1], 5000AFC[1] 

Rated short-time withstand current

25/31.5/40/50kA-4s

Rated peak withstand current

63/80/100/125kA

[1] FC = Fan cooled.


Circuit breaker ratings


Rated normal current

630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A, 5000A

Rated short-circuit breaking current

25/31.5/40/50kA-4s

Rated short-circuit making current

63/80/100/125kA

Rated short-time withstand current

25/31.5/40/50kA

Single capacitor bank switching

630A

Multiple capacitor bank switching back to back

400A

Class

E2, M2, C2

Breaking number of short-circuit current

50

Auxiliary voltage

AC110/220 DC110/220

Mechanism


Rated operating sequence

O - 0.3s - CO - 180s - CO

Class

M2

Number of operations

20,000 times

Number of operations interrupter

20,000 times