1250A/2500A/3200A/11kv/12kv/24kv High Voltage Indoor Three Phase Vacuum Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Model NO.: ZN28-12
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000, CE, CB, CCC
• Rated Voltage: 12/24kv
• Rated Currrent: 630-4000A
• Rated Short Circuit Breaking Current: 20-40ka
• Rated Short Circuit Making Current: 50-100ka
• Rated Current Breaking Time: 20000 Times
• Rated Operation Voltage: DC/AC 110V/220V
• Power Frequency Withstand Voltage: 42-65kv
• Lightning Impulse Voltage: 75-125kv
• Input Power: 70W
• Themal Stability Current: 20-40ka
• Dynamic Sable Current: 50-100ka
• Rated Operation Sequence: O-0.3s-Co-180s-Co
• Transport Package: Wooden Case
• Specification: 681*598*650
• Origin: Zhejiang, China
• HS Code: 8537209000
• Production Capacity: 1000 Piece/Pieces Per Month
• Package Size: 450.00cm * 280.00cm * 260.00cm
• Package Gross Weight: 1200.000kg

Product Description

Product Description

ZN28G/ZN28A-12  Series Side Mounted Indoor High Voltage Vacuum Circuit Breaker
ZN28G ZN28A-12 series indoor vacuum circuit breaker is a three-phase AC 50Hz,rated voltage of 12kV indoor switchgear,control and protection for industrial and mining enterprise,power plants and substations,electrical faclties,and for frequent operation place.

AMBIENT CONDITION
1.the ambient temperature:not higher than +40 C,not less
than 10C(-30Cis permited storage);
2.the altitude:≤1000M;
3. Relative humidity: daily average value is not greater than
g5%,monthly average is not greater than 90%;air relative
humidity on average less than 2210-3Mpa,on average
less than1.810-3Mpa.
4.The surrounding air is not corrosive and flammable gas,
steam and other significant polution;
5.Earthquake intensity:≤8 degree.

Product feature
1. The vacuum arcing chamber of this VCB is of middle sealed-in longitudinal magnetic field type. The main shaft, opening
spring and buffer are all installed on the framework. There are 6 pieces of insulator switch fixed with stable and moving
trestles , then the vacuum arcing chamber are installed between the stable and moving trestles. The main shaft connects
with moving conducting bar of vacuum arcing chamber through crutch arm of insulating bar. Two pieces of insulation bars
connect two ends of stable and moving trestles to form a whole so as to improve the rigidity.
2. When the stable and moving contact open by the performance of operation mechanism, the arc in vacuum occur between contact, then extinct when the current reach at zero. Due to the special contact structure, during the arcing period, there is longitudinal magnetic field between contact so that arc lies evenly on the surface of contact and maintain a low arc voltage; in Vacuum arc-extinction chamber, the medium intensity recover at high speed, as well as small arc power and electrocorrosion ratio after arc extinction, thus to improve the breaking capability on short-circuit current and electric life.
3. The VCB applies to rigorous occasions such as high altitude and frequent operation.
4. As long as the VCB accord to the mechanical characteristics, the client may select adaptable electromagnet or spring
operation mechanism according to special situation.

Main technical parameter

Item	Unit	Parameters
Rated voltage	KV	12
Rated current	A	630-3150
Rated short-circuit breaking current	KA	20	31.5	40
Rated short-circuit closing current	KA	50	80	100
Rated dynamic steady electric current(peak)	KA	50	80	100
Rated thermal stabity current(RMS)	KA	20	31.5	40
Rated thermal stabiity time	S	4
The breaking times of rated short circuit breaking current	Times	30(50)
Open time of CD10 electromagnetic operating mechanism	mS	<80
Rated operating sequence	KV	O-0.3S-CO-180S-CO
A minute power frequency withstand voltage(RMS)	KV	The phase 42,section 48
Lightning shock pressure	Times	The phase 75,section 85
Mechanical life		10000
Note:20KA,31.5KA t=0.3s t1=180sE2 class                 40KA t=180s t1=180s

 

PRODUCTS CATEGORIES

 

 

Company Profile

is a professional manufacturer of high and low voltage switch transmission and distribution equipment and high and low voltage electrical components, the production of fully insulated fully sealed inflatable cabinets, intelligent solid insulated ring host units, outdoor high voltage cable branch box, box-type substation, etc Product quality is stable, reliable, It is deeply trusted and approved by the customers. Our proudly exports its high-quality productsto a myriad of global destinations, with a significant presence in diverse and dynamic countries such as Ghana, Gambia, Ethiopia, the Philippines, South Korea, Bangladesh, Australia, Pakistan, Azerbaijan, Myanmar, and beyond. Our 11kV Current Transformer with 50Hz Frequency for Indoor Use has consistently garnered rave reviews for its impeccable quality and outstanding performance.

Our dedicated team excels in crafting the most cost-effective and innovative power solutions, tailored precisely for our clients' needs. We actively contribute to the design of sophisticated substation and distribution plans and engage in competitive overseas bidding. We have triumphantly addressed and resolved intricate product requirements, ensuring our clients' utmost satisfaction.

PRODUCT WORKSHOP

Certifications

Our credentials are bolstered by the acclaimed ISO certification . Additionally, we possess an extensive collection of diverse type test reports that exemplify the unparalleled quality and reliability of our products.

Packaging & Shipping

Our dedicated packaging team excels in customizing exquisite wooden boxes, crafting distinctive logos, selecting vibrant colors, and designing unique labels tailored precisely to meet your requirements. We ensure that each product is impeccably packaged, safeguarding its integrity, and is dispatched with precision to reach you promptly.

FAQ

Q1: Are you a trading company or manufacturer ?
A1: We are a professional factory with 7 years experience in the field of high and low voltage power transformers, substation, vacuum circuit breaker, power equipment.

Q2: Do you accept customized serveice ?
A2: We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .
 

Q3: What is your MOQ?
A3: Our MOQ is 1 piece.

Q4: How long is your delivery lead time ?
A4: It depends on your product requirement and quantity . Generally , 5~10 working days is avaliable .
 

Q5: How do you solve quality problems?
A5: Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make asatisfied soluton within 2 days .

 

Q6: What is the price of shipping?
A6: Depending upon the port of delivery, prices varies.

Q7: What is your payment terms ?
A7: 30%T/T in adcance,70% before shipment . West union , L/C are also acceptable .