Zn28 (A) -12kv Indoor High Voltage Vcb Vacuum Circuit Breake Integrated/ Divided-Body Structure Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Model NO.: ZN28-12
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: VDE, ISO9001-2000, CE, UL, CB, CCC
• Product Name: Intdoor Vacuum Circuit Breaker
• Orign of Place: Zhejiang ,China
• Related Voltage: up to 12kv
• Rated Frequency: 50/60Hz
• Rated Current: up to 3150A
• Phase: Three
• Certificate: ISO CCC IEC
• OEM: Offered
• MOQ: 1PCS
• Mechanical Life: 20000 Times
• Transport Package: Normal Export Case
• Specification: 681*598*650
• Trademark: Zhegui Electric
• Origin: Zhejiang, China
• HS Code: 8537209000
• Production Capacity: 50pieces/Week

Product Description

 

Customized products can consult online customer service!

 

PRODUCT DETAILS

ZN28-12 Indoor HV Vacuum Circuit Breaker

Description:

        ZN28-12 and ZN28A-12 indoor HV vacuum circuit breaker apply to power system of rated voltage 12kV, three-phase AC 50/60Hz. it used to control and protect electric apparatus in industries like mining, substation and so on. ZN28-12 is a unitary type (operation mechanism is installed inside the switchgear and combine with it as a whole); ZN28A-12 is a hanging-on type (the mechanism and switchgear are separately installed on cubicle or support frame, then connected with link rod and driveshaft.)

As long as the VCB operates within the required mechanical parameter, it can work with many advantages such as strong breaking capability, effective arc extinction, long lifetime, reliable and safe operation as well as easy maintenance. The product conforms to IEC62271-100, GB/T1984, JB3855 and DL/T403 standards.

 

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 is 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 is open by the performance of the operation mechanism, the arc in vacuum occurs between contact, then extinct when the current reaches at zero. Due to the special contact structure, during the arcing period, there is the 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 electro corrosion ratio after arc extinction, thus to improve the braking 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 the mechanical characteristics, the client may select adaptable electromagnet or spring operation mechanism according to special situation.

No.	Item	Unit	Data
1	Rated short-circuit breaking current	kA	12.5kA	20kA	25kA	31.5kA	40kA
2	Rated voltage	kV	12
3	Rated current	kA	630	630 1000 1250	1000 1250 1600	1250 1600 2000 2500	1600 2000 2500 3150
4	4s rated short-time withstand current	kA	12.5	20	25	31.5	40
5	Rated short-circuit making current	kA	31.5	50	63	80	100
6	Rated peak withstand current	KA	31.5	50	63	80	100
7	Rated short-circuit breaking time	Times	50	50	50	50	30
8	Mechanical life	Times	20000
9	Full breaking time	ms	50
10	Rated operation sequence		0-0.3S-CO-180s-CO		O-180s-CO-180s-CO
11	1min. PF withstand voltage(virtual value)	kV	42
12	Lightning impulse withstand voltage(peak)	kV	75
13	Model of operation mechanism		Follow client's requirement

 

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COMPANY INFORMATION

Zhejiang ZheGui Electric Co., Ltd established in 2013. We are located in Zhejiang with convenient transportation access and developed electrical market. We are group of private enterprises that hold the production license issued by the former ministry of energy and ministry mechanical and electrical engineering.
The company has nearly 60 million fixed assets and more than 60 employees, covering 23133 square meters. We are specialized in R&D production of complete switchgear of high and low voltage equipment such as prefabricated substation, distribution cabinet/box, drawer cabinet, ring network cabinet, inflatable cabinet, etc.
We owns three CNC bending machine, CNC shearing machine, CNC laser cutting machine and a series of advanced production equipment to further optimized the product structure and improve the efficiency of production. After nearly 7 years of development, it has passed ISO 9001-2000 quality system certification. All items produced by our own factory, so our advantages are: reliable quality and reasonable price. Gather the world's energy to delight your business. It's honorable for Zhegui to share your progress, brilliance and success!

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