Product Details
1. A vacuum interrupter uses a high vacuum to extinguish the arc between a pair of contacts. As the contacts move apart, current flows through a smaller area. ... The arc is evenly distributed over the contact surface to maintain a low arc voltage and to reduce contact erosion.
2. A vacuum interrupter is a switch which uses electrical contacts in a vacuum. It is the core component of medium-voltage circuit-breakers, generator circuit-breakers, and high-voltage circuit-breakers. Separation of the electrical contacts results in a metal vapour arc, which is quickly extinguished. Vacuum interrupters are widely used in utility power transmission systems, power generation unit, and power-distribution systems for railways, arc furnace applications, and industrial plants.
3. Since the arc is contained within the interrupter, switchgear using vacuum interrupters are very compact compared with switchgear using air, SF6 or oil as arc-suppression medium. Vacuum interrupters can be used for circuit-breakers and load switches. Circuit-breaker vacuum interrupters are primarily used in the power sector in substation and power-generation facilities, and load-switching vacuum interrupters are used for power-grid end users.
TD-12/630-20（507J)
Main technical parameter |
Value |
Rated voltage |
12kV |
Rated current |
630A |
Rated frequency |
50Hz |
Rated power frequency withstand voltage (1 min) |
42kV |
Rated lightning impulse withstand voltage |
75kV |
Rated short circuit breaking current |
20KA |
Rated short circuit making current(peak value) |
50KA |
Rated withstand current(peak value) |
50kA |
Rated short time withstand current |
20kA |
Rated duration of short circuit |
4s |
Rated breaking current of single capacitor bank |
400A |
Breaking operations under rated short circuit breaking current |
30 times |
Mechanical life |
10000 times |
Closing force due to bellows and atmosphere |
135±30N |
95Force required to hold contacts opening at full stroke |
190±50N |
Circuit resistance at lowest rated contacts force |
≤20μΩ |
Limiting abrasion of contacts |
3mm |
Weight of movable parts |
≤0.8kg |
Storage life |
20 years |
Mechanical Data Required For The Matched vacuum Switchgear |
Value |
Clearance between opening contacts |
9±1mm |
Average opening speed |
1.1±0.2 m/s |
Average closing speed |
0.6±0.2 m/s |
Rated contacts pressure |
2200±200N |
Contacts bouncing duration at closing operation |
≤2ms |
Synchronism of three phases |
≤2ms |
Contacts re-bouncing clearance at opening operation |
≤2mm |
1.Fast interrupting speed
2.Rapid dielectric recovery
3.High cycle withstand voltages
4.Robust, compact design
5.Vacuum interrupter has small volume, high pressure resistance and strong breaking capacity
6.Various types and ratings are available for circuit breakers, contactors and load break switches
1.Q. Is it OK to print my logo on the product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
2.Q: Are you factory or trading company?
A: We are factory.
3.Q: What's the delivery time? Because we really need them is urgently?
A: 3~7days For sending sample order. 15-30 days for regular order based on quantity
4.Q: What''s your shipment method?
A: We usually ship prouduct by express TNT, DHL, UPS,
FeDex, we will choose the most cost-efficient way for you.
If you have your own shipping agent, we will help ship to him.
| Vacuum Interrupter Applications |
Inside with foam to support the product, put it in carton box, fixed it on pallet.
http://www.rgvezj.com/
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