Shaanxi Longxiang Electrical Co., Ltd. is one of the most reliable manufacturers and suppliers of vib-12f indoor high voltage alternator vacuum circuit breaker in China. With abundant experience, we are committed to providing high quality customized products with competitive price. Welcome to buy premium vib-12f indoor high voltage alternator vacuum circuit breaker made in China here from our factory.
General Description
VIB-12F series indoor high voltage alternator vacuum circuit breaker(hereinafter referred to as alternator vacuum circuit breaker) is three-phase AC,50(60)Hz indoor power distribution equipment with 12kV rated voltage.
VCB applied one-piece design of operating mechanism and vacuum circuit breaker which can be installed in both KYN28A-12 central alternator switchgear and fixed switchgear. Vacuum circuit breaker can control&protect alternator by used in exit of alternator.
Alternator vacuum circuit breaker conforms to GB/T14824-2008 of,and it passed complete type test of standard required system source.
Applying Ambient Conditions And Cabinet Width
- Ambient temperature: -15°C- 40°C
- Relative humidity: Daily average relative humidity: ≤95%;
- Monthly average relative humidity: ≤ 90%.
- Saturated vapor pressure: average pressure of a day should be no more than 2.2kPa: the average pressure of a month should be no more than1.8kPa.
- Altitude: not exceed 1000m
- Cabinet width: 1000mm
VIB-12F Alternator Vacuum Circuit Breaker Main Parameters:
1.Main Technical Parameters:
|
S.N. |
Name |
Unit |
Data |
||||
|
1 |
Rated voltage |
kV |
12 |
||||
|
2 |
Rated frequency |
Hz |
50/60 |
||||
|
3 |
Rated insulated level |
1min power frequency withstand voltage |
Pole to earth,pole to pole |
kV |
42 |
||
|
Between gaps |
kV |
50 |
|||||
|
4 |
Rated lighting impulse withstand voltage |
Pole to earth,pole to pole |
kV |
75 |
|||
|
Between gaps |
kV |
85 |
|||||
|
5 |
Rated current |
A |
1250 |
3150 |
4000 |
||
|
6 |
Rated short circuit breaking current |
kA |
40 |
40 |
50 |
||
|
7 |
Rated short circuit making current(peak) |
kA |
110 |
110 |
137 |
||
|
8 |
Rated short time withstand current duration |
s |
2 |
||||
|
9 |
Rated short circuit breaking current DC component |
% |
75 |
||||
|
10 |
Rated out-of-phase symmetrical breaking current |
kA |
20(DC%≤20%) |
||||
|
11 |
Rated out-of-phase asymmetrical breaking current |
kA |
20(DC%≤75%) |
||||
|
12 |
Rated out-of-phase making current (peak value) |
kA |
28.3 |
35.4 |
|||
|
13 |
Number of rated load current making-breaking operations |
cycle |
50 |
||||
|
14 |
Number of rated short-circuit breaking current breaking operations |
cycle |
5 |
||||
|
15 |
System-source TRV |
Rate of rise of prospective transient recovery voltage |
kV/μs |
2 |
|||
|
Peak voltage |
kV |
22 |
|||||
|
First-pole-to-clear factor |
1.5 |
||||||
|
16 |
Rated operation sequence |
CO-30min-CO |
|||||
|
17 |
Mechanical endurance |
cycle |
10000 |
||||
*When the rated current is 4000, the panel shall be fitted with compulsive with cooling.
2.Mechanical Characteristics Parameters:
|
S.N. |
Name |
Unit |
Data |
|
1 |
Contact clearance |
mm |
11±1 |
|
2 |
Contact overtravel |
mm |
3.5±0.5 |
|
3 |
Contact closing bouncing time |
ms |
≤2 |
|
4 |
Out of simultaneity of CO operations of three poles |
ms |
≤2 |
|
5 |
Average opening speed |
m/s |
1.45±0.25(Contacts separation: 6 mm) |
|
6 |
Average closing speed |
m/s |
1±0.2(4 mm before contact closing) |
|
7 |
Opening time |
20-50 |
|
|
8 |
Closing time |
ms |
35-70 |
|
9 |
Allowable wear thickness of moving and fixed contacts |
m/s |
≤3 |
|
10 |
Main circuit resistance for each phase |
m/s |
≤35(1250A) ≤25(3150, 4000A) |
VIB-12F Indoor High Voltage Alternator Vacuum Circuit Breaker Overall Outline Drawing
The outline drawing and installation dimensions of VIF-12 withdrawable type
The outline drawing and installation dimensions of VIF-12 Fixd type
Following Information Is Required For Order
1.Circuit breaker model, name, ordering quantity;
2.Rated voltage,rated current, rated short-circuit breaking current, distance between phases and also distance between upper and lower wiring outlet;
3.Rated voltage of energy charging motor and control voltage of mechanism;
4.The name and quantity of spare parts;
5.Optional components solution;
6.If the user has other special requirements (such as high altitude, extreme temperature and humidity etc.), it should be specified before ordering;
Our Workshop
FAQ
Q1: What are key spare parts for VCB?
A: Vacuum interrupter, spring operating mechanism, solid-sealed pole, closing/tripping coil, charging motor, auxiliary switch, tulip contact, insulating pull rod, earthing switch, secondary terminal block etc.
Q2: Do you support OEM & ODM customization?
A: Yes. Customization for enclosure color, parameters, nameplate, secondary drawing, IP class are available. English manuals, test reports and certificates can be supplied.
Q3: What parameters are required for ordering VCB or complete switchgear?
A: Please provide rated voltage, rated current, short-circuit breaking current; operation mode (manual/motor); control coil voltage (AC/DC); indoor/outdoor; altitude & ambient temperature; special requirements such as solid-sealed pole, Five-Prevention interlock, communication function, OEM etc.
Q4: What is your lead time?
A: About 10 working days for standard models; longer for non-standard customized orders.
Q5: Is VCB maintenance-free?
A: Vacuum interrupter is maintenance-free, but spring mechanism and transmission parts need periodic inspection and lubrication.
Q6: Package information
A: For inner box and master carton are made as per international standards, and we can make special designed for you if need. And if necessary,will be packed in pallets to avoid any damage.
B: Not more than 35kg per carton box, about 1000kg per pallet
