Zn28-12k Fixed Type of Indoor High Voltage Vacuum Circuit Breaker
| Price: |
Negotiable/Piece |
| Trade Terms: |
FOB,CFR,CIF |
| Min Order: |
1/Piece |
| Pay Type: |
L/C,T/T |
Product Specifications
| Prod Model: |
ZN28-12K |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Rated Voltage: |
12kv |
| Rated Current: |
630/1250/1600/2000/2500/3150A |
| Rated Frequency: |
50/60Hz |
| Breaking Capacity: |
High Voltage Circuit Breakers |
| Operation: |
Electric Type |
| Speed: |
High-Speed Circuit Breaker |
| Arc-extinguishing Medium: |
Vacuum |
| Installation: |
Fixed |
| Structure: |
ACB |
| Poles Number: |
3 |
| Certification: |
CCC |
Product Description
ZN28-12K
Fixed Type of Indoor High Voltage Vacuum Circuit BreakerGeneral Description ZN28A-12 fixed type indoor HV vacuum breaker is used for many kinds of switchgear like XGN2-12(Z).It is widely used for 12kV voltage systems which is accordance with GB1984-2003 standards Structural characteristics:1.This vacuum circuit breaker adopts air insulation ,it can meet air distance and creepage under nomal run condition.2.The operating mechanism can use CD17or CT19 type mechanism,the outlet curve has good adaptation for the requirements of vacuum interrupters.It has high reliable with characteristic of long life and easy maintenance.3.Convenient for matching with switchgear;convenient and reliable operation:compulsive mechanical interlock way is adopted:meet the "Five Preventions"function. Applying ambient conditions 1.Ambient temperature:-15~+40ºC.2.The height above sea level:≤1000m(besides the special requirements).3.Relative humidity:the average humidity of a day should be no more than 95%;the average humidity of a month should be no more than 90%.4.Saturated vapor pressure:the average pressure of a day should be no more than 2.2kPa:the average pressure of a month should be no more than 1.8kPa.5.Earthquake intensity:not exceed 8 degrees.6.It should be installed in the places without fire,explosion,serious filth, chemical erosion and violent vibration. Main Technical Specification| S.N | Name | Unit | Data |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | Hz | 50/60 |
| 3 | Rated current | A | 630 | 630 | 1250 | 1600 |
| 1000 | 1000 | 1600 | 2000 |
| 1250 | 1250 | 2000 | 2500 |
| | | | 3150 |
| 4 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 |
| 5 | Rated peak withstand current | kA | 50 | 63 | 80 | 100 |
| 6 | Rated short-circuit duration | s | 4 |
| 7 | Rated power frequency withstand voltage | Between phases,
phase to ground | kV | 42 |
| Between gaps | kV | 48 |
| 8 | Rated lightning impulse withstand voltage | Between phases,
phase to ground | kV | 75 |
| Between gaps | kV | 85 |
| 9 | Rated operating sequence | | O-0.3s-CO-180s-CO
O-180s-CO-180s-CO(40kA) |
| 10 | Rated source voltage of opening and closing circuit | V | ~220/-110;-220/110 |
| 11 | Rated breaking current of single capacitor bank | A | 630 |
| 12 | Rated breaking current of bank to bank capacitor bank | A | 400 |
| 13 | Electrical endurance class | Cycle | 30 |
| 14 | Mechanical endurance | Cycle | 10000 |
| 15 | Operating mechanism type | | CD17I | CD17II | CD17II | CD17III |
| CT19I | CT19I | CT19I | CT19II |
| 16 | Clearance between open contacts | mm | 11±1 |
| 17 | Contact stroke of contacts | mm | 4±1 |
| 18 | Out simultaneity of CO operation of three poles | ms | ≤2 |
| 19 | Contact bouncing duration at closing operation | ms | ≤2 |
| 20 | Closing time | ms | 50~100 |
| 21 | Opening time | ms | 20~60 |
| 22 | Average closing speed | m/s | 0.6±0.2 |
| 23 | Average opening speed | m/s | 1.1±0.2 |
| 24 | Main circuit resistance of each pole | μΩ | ≤40 | ≤40 | ≤40 | ≤30 |
| 25 | DC component | | 50%(Max.) |
Overall outline drawing
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Shaanxi longxiang electrical Co., Ltd. was established in the year of 2002, which is located in gaoxin 19th road, east development zone, baoji city, shaanxi province, China. It is a specialized manufacturer to manufacture, sell and agent different series of vacuum circuit breaker as well as their main parts and components covering the voltage of 12kv~40.5kv.
Being one of the main products, the annual production volume of our vacuum circuit breaker has reached 12000sets last year. Because of reliable quality, good credit and very competitive price, our products sell well in the market of European, southeast Asia, MID-east and other international market.
If you have some requirements in these fields, pls feel free to contact us.
