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          The quality of survival, technology and development
          Quality for survival, technology for development
          SR-12 type Compact air insulated intelligent circuit breaker cabinet
          SR-12 type Compact air insulated intelligent circuit breaker cabinet
          SR-12 type Compact air insulated intelligent circuit breaker cabinet

          Description:

          With the enhancement of social environmental awareness, SR-12 type compact air insulated intelligent circuit breaker cabinet which is insulated by air, does not contain greenhouse gases and solid insulating materials is the best solution.

          Features:

          u Adopting a forward-looking maintenance-free fixed circuit breaker solution and free combination module design provides convenient and flexible solutions for upgrading the distribution network.

          u Safe and environmentally friendly, small size.

          u Active personal safety design brings no danger of phase-to-phase short-circuit explosion.

          u Unique fault detection system, integrated intelligent measurement and control component.

          u Modular design and innovative standardized extension.

          u Maintenance free for more than 25 years.

          u Low carbon energy saving brings great social benefits.

          Using environment:

          u Temperature: Min -25℃~Max+40℃;

          u Relative humidity: Daily average ≦95%; Monthly average≦90%;

          u Altitude: ≦2000m;

          u Shock level: Horizontal acceleration 0.4m/s2,Vertical acceleration 0.15m/s2;

          u Installation location: The place with no severe impact, serious pollution and chemical corrosion, no conductive dust and explosion risk.

          u For 10KV systems with no grounded and grounded through a small resistor or by arc suppression coil.

          When the conditions of use exceed the above range, the user shall negotiate with us to determine the allowable range or take corresponding supplementary technical measures.

          Technical Parameters:

          Items

          Unit

          Value

          Rated voltage

          kV

          12

          Rated frequency

          Hz

          50

          Rated current

          A

          630

          Rated short-circuit breaking current

          kA

          20/25

          Rated short-time withstand current

          kA

          20/25

          Rated short-time duration

          s

          4

          Rated peak withstand current

          kA

          50Load switch cabinet/63Combined electrical cabinet

          Rated short-circuit closing current

          Vacuum interrupter

          kA

          50/63

          Earthing switch

           

           

          Auxiliary circuit and control circuit

          Rated voltage DC/AC

          V

          400

          1min power frequency withstand voltage

          V

          2000

          Rated insulation level

          Short-time power frequency withstand voltage

          Open contacts

          kV

          48

          Phase to phase

          kV

          42

          Phase to earth

          kV

          42

          Lightning impulse withstand voltage

          Open contacts

          kV

          95

          Phase to phase

          kV

          75

          Phase to earth

          kV

          75

          Mechanical endurance

          Circuit breaker

          time

          10000

          Isolation/earthing switch

          time

          3000

          Electric endurance

          Circuit breaker

          grade

          E2

          Isolation/earthing switch

          grade

          E2

          IP grade

          Cabinet shell

           

          IP4X

          Sealed box

           

          IP65


          Product details
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