Zn28 (A) - 12 3 Phase 50Hz 12kv Indoor High Voltage Vacuum Circuit Breaker
| Price: |
US $ 50/Piece |
| Trade Terms: |
FOB,CFR,CIF |
| Min Order: |
1/Piece |
| Pay Type: |
L/C,T/T,Paypal,Western Union |
| Prod Model: |
ZN28 (A) -12 |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Circuit Breaker: |
Vacuum Circuit Breaker |
| Arc-extinguishing Medium: |
Vacuum |
| Breaking Capacity: |
High Voltage Circuit Breakers |
| Poles Number: |
3 |
| Certification: |
CCC |
| Operation: |
Electric Type |
| Installation: |
Fixed |
| Speed: |
High-Speed Circuit Breaker |
| Structure: |
Conventional Circuit Breaker |
Product Description
ZN28 (A) - 12 series vacuum circuit breaker is rated voltage 12 kv, three-phase ac fifty hz high indoor switchgear. This product conforms to the GB1984-89 standard, this product structure for switch body and operation mechanism one installation and switch body and operation mechanism separation installation two forms. One-piece mechanism is the basic ZN28, split mechanism for ZN28A - 12 type, suitable for all kinds of stationary switch cabinet.This product can be with CD17, CD10A type dc electromagnetic operating mechanism and CT17 CT19 type spring-storing type, operation mechanism.2. The product model and meaningZ N28-12 (A)/T630 - twentyZ: vacuum circuit breaker,N: indoor;And: design number;A: mounted;12: rated voltage (KA);630: rated current (A);Twenty: rated short circuit breaking current (KA).Three. Normal conditions of useA. environment temperature: cap + and ° c, down - 30 ° c;B. height above sea level: no more than 2000 m;C. The wind pressure of no more than 700 pa (equivalent to wind speed 34 m/s);D. no often violent vibration;E. antifouling level: III.| NO | item | unit | information |
| 20KA | 25KA | 31.5KA | 40KA |
| 1 | rated voltage | KV | | 12 | | |
| 2 | higest working voltage | A | 630.125 | 1250.16 | 1250.1600.2000.2500 | 1600.2500.3150 |
| 3 | rated breaking current for short-circuit | KA | 20 | 25 | 31.5 | 40 |
| 4 | Rated short circuit switching current (peak) | KA | 50 | 63 | 80 | 100 |
| 5 | rated peak withstand current | KA | 50 | 63 | 80 | 100 |
| 6 | rated withstand current for short-circuit in 4 mins | KA | 20 | 25 | 31.5 | 40 |
| 7 | rated insulated level | frequency withstand (before and after rated breaking and closing ) | KV | 42(48) |
| impact (before and after rated breaking and closing ) | 75(84) |
| 8 | rated operational | | breaking -0.35-closing breaking 180s-closing breaking |
| 9 | lifetime | Times | 10000 |
| 10 | breaking times for rated current in short-circuit | Times | 30 | 20 |
| 11 | clearance between open contacts | mm | 11±1 |
| 12 | overtravel | mm | 4±1 |
| 13 | three phaseclosing and breaking | ms | ≤2 |
| 14 | Contact switching bounce time | ms | ≤2 |
| 15 | average breaking speed | m/s | 1.2±0.3 |
| 16 | average closing speed | m/s | 0.6±0.2 |
| 17 | time for breaking | under highest operational volatge | s | ≤60 |
| under lowest operational volatge | ≤80 |
| 18 | time for closing | s | ≤100 |
| 19 | Single-phase circuit resistance | u Ω | ≤45 | ≤25 |
| 20 | Static head accumulated allow wear thickness | mm | 3 |
| 21 | The oil buffer buffer stroke | mm | 10 |
Wenzhou Suoli Electric Co, . Ltd. (will change the namer to Wenzhou Manjia Electric Co., Ltd. ) is a manufacturer specialized in low-voltage electrical appliance, gathering research, manufacture, distribution and service as a whole. We mainly produce switch cabinet, JXF, distribution box, lighting box, plastic water-proof and dust-proof junction box, seal box, MCBs and so on.
Our company is established in 1995, located in Yueqing economic development zone with an area of 7800 square meters which is next to national highway 104, the transportation is very convenient.
Relying on powerful technology strength, advanced testing equipment, exquisite technical and modernized management mode, based on the principle that people oriented, we have 200 workers and 20 engineers. We import numerical control bending machine, cutting machine, punch, injection molding machine and such top-ranking facilities. Our products have passed certification of SON, CE and ISO9001.
The satisfaction of customers is our wishes and responsibility. In order to offer best services, we require all the staff to strengthen the notion of customer first. Besides, we also have established the center of after-sale services.
The company always keeps in touch in with clients and communicates with potential clients. Suoli always has been keeping the idea of the human being as base and considers honesty as the foundation, peace as the most valuable thing, and puts credibility in the first place.
Together with you, Souli is willing to create a better future.
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