VS1 indoor vacuum circuit breaker(VCB) manufactured has complete specifications,with rated current up to3150A, rated short-circuit breaking current ip to 50kA. It the modular spring operating mechanism, which has the characteristics of convenient maintenance, rapid replacement of parts and...
Product Details
Product introduction
Vacuum circuit breaker is the most commonly used type of high-voltage circuit breaker, The vacuum circuit breaker is named after its interrupting medium and the insulating medium of the contact gap after interrupting is high vacuum; it has the advantages of small size, light weight, suitable for frequent operation and interrupting without maintenance, and is more popularly used in the 3kV-40.5kV distribution network.
The components of vacuum circuit breaker are vacuum interrupter, electromagnetic or spring-operated mechanism, bracket and other parts.
Vacuum interrupter is the core component of vacuum circuit breaker, its main role is, through the excellent insulation of the vacuum inside the tube to make the medium and high voltage circuit cut off the power can quickly extinguish the arc and suppress the current to avoid accidents and accidents.
There are two kinds of operating mechanism: spring-operated mechanism and permanent magnetic operating mechanism.
The conductive circuit is divided into insulated cylinder form (vacuum interrupter is installed in the insulated cylinder) and sealed pole form (vacuum interrupter is installed in the epoxy resin).
Ambient condition
1. The ambient air temperature does not exceed 40ºC, and the average value measured within 24h does not exceed 35ºC.
2. The minimum ambient air temperature is -5ºC for the "-5 indoor" level, -15ºC for the "-15 indoor" level and -25ºC for the "-25 indoor" level. 15ºC, and -25ºC for the "-25 house" level.
3. The effect of sunlight radiation can be ignored.
4. The altitude does not exceed 1000m.
5. The surrounding air is not significantly contaminated by dust, smoke, corrosive and/or flammable gases, vapors or salt spray.
NO
Item
Unit
Technical Parameters
1
Rated voltage
KV
24
2
Rated short-duration power frequency withstand voltage
KV
65/79(Interphase, ground/fracture)
3
Rated lightning impulse withstand voltage
KV
125/145(Interphase, ground/fracture)
4
Rated frequency
Hz
50
5
Rated current
A
630 1250
630
3150
630
6
Rated short-circuit breaking current
KA
20/25
31.5
31.5
7
Rated short-time withstand current
KA
20/25
31.5
31.5
8
Rated short circuit duration
S
4
9
Rated peak withstand current
KA
50/63
80
100
10
Rated short circuit closing current
KA
50/63
80
100
11
Secondary circuit power frequency withstand voltage (1min)
V
2000
12
Rated single / back to back capacitor group breaking current
A
630/400(40kA:800/400)
13
Rated capacitor bank closing current
KA
12.5 (frequency is not greater than)
14
Mechanical life
TIMES
20000
FAQ:
1.Can I have a visit to your factory before the order?
Sure,welcome to visit our factory.
2.Why us?
Strickly in accordance with ISO9001 international quality management system certification
3.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.
4.How can I get more details about products on this website?
A: You can contact our info@volcano-electrical.com for more information.