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ZW43SG-12 Outdoor HV AC Double-isolating Type Intelligent Vacuum Circuit Breaker
 
ZW43SG-12 Outdoor HV AC Double-isolating Type Intelligent Vacuum Circuit Breaker

Summary
ZW43SG-12 outdoor HV AC double-isolating type intellighent vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in the power system with rated voltage 12kV, three-phase AC 50/60Hz. The product is composed of a vacuum circuit breaker, an intelligent controller and a built-out PT. It is applicable to substations, industrial and mining enterprises, unban and rural electric power networks, especially to those serious pollution environment and frequent operation places for power network control and equipment protection. The product conforms to the standards of IEC62271-100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV general technical requirement of switch and control apparatus.

Ambient conditions
1. Altitude: ≤2000m;
2. Ambient temperature: -40℃~+45℃;diurnal temperature rang ≤25℃;
3. Wind speed: ≤35m/s, equivalent to wind pressure of 700Pa;
4. Earthquake intensity: ≤grade 8;
5. Relative humidity: monthly average ≤90%; daily average ≤95%;
6. Ice thickness: ≤10mm
7. Sunlight intensity: ≤1000W/m2
8. Pollution degree: ≤Ⅳ(GB5582);
9. Applicable occasions: no fire and explosion danger, no chemical corrosion and no frequent severe vibration

Model


Technical specification
No. Item Unit Data
1 Rated voltage kV 12
2 Rated current A 630
3 Rated frequency Hz 50/60
4 Rated short-circuit breaking current kA 20
5 Rated short-time withstand current(4s) 20
6 Rated peak withstand current(peak) 50
7 Rated short-circuit making current(peak) 50
8 1min P.F withstand volage Wet test kV 34
Phase to phase,phase to earth 42
Across open contacts 48
9 Lightning impulse withstand
voltage(peak)
Phase to phase,phase to earth kV 75
Across open contacts 85
10 1min P.F withstand voltage for secondary loop kV 2
11 Breaking times of rated current times 1000
12 Breaking times of rated short-circuit current 30
13 Mechnical life 10000
14 Opening speed m/s 1.2±0.2
15 Closing speed 0.6±0.2
16 Closing time ms 25~60
17 Opening time 18~45
18 Contact close-bouncing time ≤2
19 Rated power for energy storage motor W 40
20 Three-phase opening/closing non-simultaneity ms ≤2
21 Resistance for each
phase conductive loop
Switch body μΩ ≤80
Disconnect blade Single side≤120、double sides≤200
22 Phase-to-phase spacing mm 280±1.5
23 Net weight kg 165


Main function features
1. The performance of the product is stable and reliable as the product adopts three-pillar type structure, and the vacuum arc-extinguishing chamber connects with the operating mechanism through insulation pulling rod;
2. Arc-extinguishing chamber, main conducting loop and insulation support are casted into an organic whole by epoxy resin with APG technology, and encapsulated with silicon rubber, it is provided with good anti-condensation performance and mechanical strength.
3. The switch adopts a high performance spring operating mechanism with the advantages of simple structure and long mechanical life, and with the functions of manual/electric energy storage and opening/closing operation.
4. The product has the advantages of small size, novel appearance, light weight and easy installation.
5. The switch can be equipped with control terminal interface to apply to automation distributiong networks and the unattended substations.

Outline and installation dimension

 
 
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1  Wall perforated waterproof cover for air conditioner
2  Water drainage pump for air conditioner
3  Indicator Light
4  Push button
5  Modular isolation switch series
6  Solid State Relay
7  Industrial plug and socket
8  Vacuum Circuit Breaker Series
9  Outdoor Load Break Switch Series
10  Intelligent Automation Equipment For Power Grid
11  Outdoor AC High Voltage Disconnect Switdh Series
12  Indoor Load Break Switch Series
13  Indoor AC High Voltage Disconnect Switch Series
14  Insulator Series
15  Drop-out Type Fuse Series
16  Arresters
17  Hot stick/insulated rod/operating rod
18  Ground set/earth rod equipment
19  Ground wire,grounding clamp
20  Copper rod /brass rod
21  Safety helmet
22  Discharge rod lightening rod
 
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