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Medium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High Efficeincy

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Medium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High Efficeincy

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Place of Origin : Zhejiang, China

Brand Name : XK

Model Number : ZW32-12~24KV

Certification : ISO9001 / GB / IEC

Supply Ability : 100 Piece/Pieces per Month

Packaging Details : EXPORTING PACKING

MOQ : 1 Piece/Pieces

Price : Negotiation

Standard : IEC

Rated Current : 630A,1250A

Rated Voltage : 12KV,15kV,24KV

Mechanical life : 1000

Port : NINGBO

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XK ZW32 630A 15kV Vacuum Circuit Breaker

Product Description

Medium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High Efficeincy

Operation of vacuum circuit breaker
The main aim of any circuit breaker is to quench arc during current zero crossing, by establishing high dielectric strength in between the contacts so that reestablishment of arc after current zero becomes impossible. The dielectric strength of vacuum is eight times greater than that of air and four times greater than that of SF6 gas. This high dielectric strength makes it possible to quench a vacuum arc within very small contact gap. For short contact gap, low
contact mass and no compression of medium the drive energy required in vacuum circuit breaker is minimum. When two face to face contact areas are just being separated to each other, they are not done so instantly. Instead, as the contact area on the contact face is being reduced and ultimately comes to a point and then they are finally de-touched. This happens in a fraction of micro second. At this instant of de-touching of contacts in a vacuum, the current through the contacts concentrated on that last contact point on the contact surface and makes a hot spot there. As the medium is vacuum, the metal on the contact surface gets easily vaporized due to that hot spot and create a conducting media for arc path. Therefore, the material constituting the arc is very small and thus a feeble arc is established even with high current interruption. The arc will be initiated and continues until the onset of next current zero. Th figure below shows the cross section assembly of a VCB.

Item Unit Data
Rated insulation level 1min power frequency withstand voltage Dry KV
42
65
Wet
34
50
Lightning impulse withstand voltage
75
1250
Rated short circuit breaking current KA
20;16;12.5
20;16;12.5
Rated short circuit breaking times Times
30
30
Rated short-circuit switching current KA
50
50
Rated peak withstand current
Rated short-circuit withstand current
20
20
Rated short circuit duration S
4
4
Opening time(SHT) Maximum operating voltage ms
15-50
15-50
Rated operating voltage
Minimum operating voltage
30-60
30-60
Closing time ms
25-50
25-50
Full-off time
≤100
≤100
Arcing time
20
20
Mechanical life Times
1000
1000
Charging motor rated input power W
40
40
Rated operating voltage and auxiliary voltage circuit V
DC220,110,24
DC220,110,24
AC220,110,24
AC220,110,24
Rated voltage of the storage time S
≤10
≤10
Over current release Rated current A
5
5
Trip current accuracy %
±10
±10

Medium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High Efficeincy

Medium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High EfficeincyMedium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High Efficeincy

FAQ

Medium Voltage Vacuum Circuit Breaker ZW32 630A 15kV High Efficeincy

Q1. Can we have our logo or company name to be printed on your products or the package?
Yes,you can.Logo and company name can be printed on our products by silk screen printing.You can send us the artwork by email in JPEG or TIFF format.
Q2. What is lead time?
Usually 3-15 working days, On-Time delivery
Q3. Why us?
All products comply with the requirements of GB national standards, IC, ANSI and other international standards, and the requirements of company's technology standards.
Q4. How do you make our business long-term and good relationship?
1. Our high quality and competitive price are the most important factors to maintain long-term and good relation -ship with our customers.
2. Good service is our basic principle for every customers.
Q5. Can I have a visit to your factory before the order?
Sure,welcome to visit our factory.


Product Tags:

vcb circuit breaker

      

indoor vcb panel

      
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