2020年澳门六开彩历史开奖记录

  

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 Parars:

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
2020年澳门六开彩历史开奖记录