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Indoor Vacuum Circuit breaker VB5-Small Type

VB5 vacuum circuit breaker with rated frequency 50/60 Hz,mechanical lifemore than 20000 times

  • Brand:

    TIANYI
  • Item NO.:

    VB5
  • Order(MOQ):

    1
  • Payment:

    T/T 30%
  • Product Origin:

    FUZHOU,CHINA
  • Shipping Port:

    FUZHOU
  • Lead Time:

    30 days
  • Product Detail

The VB5 (ZN21B) vacuum circuit breaker is based on the introduction of vacuum circuit breaker technology from Belgium EIB in 1989. After several years of technical research and technological exploration, it was put into mass production in 1993. 



VB5(ZN21B) vacuum circuit breaker is based on the introduction of Belgium EIB vacuum circuit breaker technology products, after several years of technical research and process exploration, put into mass production in 1993. VB5(ZN21B) and its series products have excellent advancement and reliability.


VB5(ZN21B) type vacuum circuit breaker can satisfy all kinds of operation of power grid in normal or accident state, including closing and opening short circuit current, as long as it is within the normal service conditions and the technical parameters of the circuit breaker.



VB5(ZN21B) vacuum circuit breaker has excellent performance in the case of frequent operation and short circuit current.Fully meet the requirements of automatic reclosing and has high operational reliability and service life.


VB5(ZN21B) vacuum circuit breaker can be installed in the switchgear in the form of fixed, or installed on the handcar chassis can be withdrawable.



NO.

Item Unit Data
1  Rated Voltage kV 12
2 Rated short-time power frequency withstand voltage ( 1min) kV 42( phase to phase,to earth) / 48( isolating distance
3 Rated lightning(1 min) impulse withstand voltage(peak) kV 75( phase to phase,to earth) / 85( isolating distance
4 Rated frequency Hz 50/60
5 Rated current A 630、1250
630、  1250、  1600、
2000、  2500、  3150
1250、  1600、  2000、
2500、  3150、  4000
6 Rated short-circuit breaking current kA 20 25 31. 5 40
7 Rated short-time withstand current( 4s) kA 20 25 31. 5 40
8 Rated peak withstand current kA 50 63 80 100
9 Rated short-circuit making current kA 50 63 80 100
10 Rated short-circuit breaking current(different directions) kA 17. 3 21. 7 27. 3 34. 6
11 Rated operation order open - 0.3S - close open- 180S - close open open - 180S - close open - 180S - close open
12 Opening time(rated voltage) ms 30-60
13 Closing time(rated voltage) ms 25-55
14 Rated output power of the energy storage motor W 100
15
Breaking times under rated short-circuit current
( E2 grade)
times 30
16 Rated voltage of energy storage motor  V AC/ DC220 、AC/ DC110
17 Rated close operating voltage/current V/A AC/ DC220/ 1 、110/ 2
18 Rated open operating voltage/current V/A AC/ DC220/ 1 、110/ 2
19 Rated instantaneous overcurrent tripping action current A 5
20 Rated voltage of the voltage loss trip V AC220、AC110
21 Rated on-off current of auxiliary switch A 16
22 Energy storage time (in rated voltage) s <7
23 Secondary circuit (1 min) power frequency withstand voltage V 2000
24 Main circuit resistance(without plum blossom contact) μΩ
≤  45(630 ~800A) 、≤  35(1250A) 、≤30(1600-2000A) 、 ≤25(2500A)   ≤
20(3150A and above)
25
Rated breaking current of capacitor bank
( C2 grade)
A single fuse 800、back to back fuse 400
26 Distance between contacts mm 9±1
27 Contact stroke mm 3±1
28 Average closing speed m/ s 0. 5~0. 9
29 Average opening speed m/ s 1- 1. 7
30 Three - phase contactor opening and closing simultaneity ms ≤1
31 Contactor closing bounce time ms <2
32 Mechanical life(M2 grade) times 20000
33 Moving and static contactor allows accumulated wear thickness mm 3



1. Altitude: ≤1000m.

2. Surrounding air temperature: upper limit +40 ° C, lower limit -25 ° C (alpine region) and -1 ° C (general region).

3. Relative humidity of surrounding air: when the maximum temperature is +40, it is not more than 50%. When the temperature is low, it is allowed to have a large relative humidity. Due to the change of temperature, it may occasionally has condensation effect.

4. Outdoor wind speed shall not exceed 34m/s.

5. The slope of the ground shall not exceed 3°.

6. The horizontal acceleration of the earthquake shall not more than 0.4m/s, and the vertical acceleration shall not morn than 0.2m/s;

7. The installation site shall be free from fire, explosion, serious pollution, chemical corrosion and violent vibration.

Note: if the actual conditions of use cannot be met, please negotiation with the manufacturer.



Q: Are you the manufacturer or trader?

A: We are both manufacturer & trader. We have our own manufacturer named TIANYI TONGYI ELECTRIC CO.,LTD, who have 27 years experience in electric industry. It covers an totally area of 117,000 m2 with 300 employees, also is a qualified supplier of China National Nuclear Corporation(CNNC) and main supplier for State Grid & China Southern Power Grid.


Q: What is your after-sales service?

A: We always provide free online service and technical support within 24 hours. 18 months warranty for customers.


Q: What is your delivery time?

A: Normally 25~35days. It depends on the order quantity and season. We have very strong capacity to produce top quality products, please inquiry us if you have any questions.


Q: What is the quality warranty time?

A: We have quality certificate CCC, CQC, ISO9001, CE ... Meanwhile, we can provide 18 months warranty for our products. Free online service and technical support within 24 hours is always provided to our customers.


Q: Do you accept ODM and OEM?

A: Yes. We have professional R & D teams to update and develop the latest technology. We also can support ODM or OEM, please send us details drawing to discuss.


Q: What is your payment terms?

A: Generally there are two payment terms:

a) 30% advance payment via T/T as a deposit, balance 70% against the shipping documents

b) Irrevocable L/C at sight


Q: If I want to visit you, how to go?

A: Our factory is located in Luoyuan County, Fuzhou City. Details address is Songshan Area, Taiwan Investment Zone, Luoyuan County, Fuzhou City, Fujian Province,China.

a) The nearest airport is Fuzhou Airport, if you come by air, please arrive in Fuzhou Airport, it takes 1 hour from the airport to our factory

b) The nearest train station is Luoyuan Station, if you come by train, please arrive in Luoyuan Station, it takes only 5 minutes to our factory.

Anyway, please contact us in advance, we will send the car to the airport or train station to pick you up.Sincerely welcome you to come and visit us.


Q: Do you need agents?

A: Yes, we welcome you to be a parter. Welcome to contact us for more information.


Vacuum circuit breaker



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