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Product Standards
♦ IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
♦ GB1984 High Voltage AC Circuit-breakers
♦ GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
♦ JB/T 3855 High Voltage AC Vacuum Circuit-breakers
♦ DL/T402 Specification of High-voltage AC Circuit-breakers
Environmental Conditions
♦ Ambient temperature: -15°C~+40°C;
♦ Altitude: <1000m;
♦ Relative humidity: daily average <95%, monthly average <90%;
♦ Earthquake intensity: <8 level;
♦ Places without fire, explosion hazard, serious filthy, chemical corrosion, as well as intense vibration.
Main Technical Parameters
No |
Item |
Unit |
Value |
1 | Rated voltage |
kV |
24 |
2 | 1 min power frequency withstand voltage |
65 |
|
3 | Rated lightning impulse withstand voltage |
125 |
|
4 | Rated frequency | Hz |
50 |
5 | Rated current | A |
630, 1250, 1600, 2000, 2500, 3150 |
6 | Rated short circuit breaking current |
kA |
20, 25, 31.5 |
7 | Ratea short circuit making current (peak) |
50, 63, 80 |
|
3 | Rated short time withstand current |
20, 25, 31.5 |
|
9 | Rated peak value withstand current |
50, 63, 80 |
|
10 |
Rated short circuit duration |
S |
4 |
11 |
Rated operating sequence |
0-0.3s-C0-180s-C0 0-180s-C0-180s-C0 (50kA) |
|
12 |
Rated opening closing cable charging current |
A |
31.5 |
13 |
Rated short circuit current breaking number |
Times |
50 (30 for 40kA, 20 for 50kA) |
No |
Item |
Unit |
Value |
14 |
Breaking time |
ms |
<80 |
15 |
Mechanical life |
Times |
10000 |
16 |
Circuit breaker in accordance with classification of electrical life |
E2 class |
|
17 |
Circuit breaker in accordance with classification of opening and closing capacity current ability |
C2 class |
|
18 |
Allowed cumulative wearing thickness of moving contact and fixed contact | mm |
3 |
19 |
Clearance between open contacts | mm |
14±1 |
20 |
Over travel | mm |
3.5±1 |
21 |
Average closing speed | m/s |
0.7±0.2 |
22 |
Average opening speed | m/s |
1.4±0.2 |
23 |
Closing time (rated voltage) | ms |
35-70 |
24 |
Opening time (rated voltage) | ms |
20-50 |
25 |
Contact closing bounce time | ms |
≤2 |
26 |
Three phase opening and closing asynchronism | ms |
≤2 |
27 |
Each phase conductive circuit resistance | uQ |
≤50 (630A) ≤45(1250A) ≤35(1600-2000A) ≤25(2500-3150A) |
28 |
Phase to phase central distance | mm |
210, 275 |
29 |
Contacts pressure | N |
2400±200 (20kA; 25kA) 3100±200 (31.5kA) |
30 |
Contact opening rebound range | mm |
≤2.5 |
31 |
Rated operating voltage | V |
AC/DC110/220 |
32 |
Rated working current | A |
1.1 (AC/DC 220V) 3.3 (AC/DC 110V) |
33 |
Power of energy storage motor | W |
70 |
34 |
Rated voltage of energy storage motor | V |
DC 220/DC110 |
35 |
Energy storage time |
ms |
≤10 |
Note: when current is 4000A or 5000A, need forced air cooling.
General Structure Drawing and Installation Size (unit: mm)
♦ Draw out type
Phase-to-phase distance 210mm.
Phase-to-phase distance 275mm.
♦ Fixed type
Phase-to-phase distance 210mm.
Phase-to-phase distance 275mm.
♦ Side mounted type
Phase-to-phase distance 275mm.Suitable for rated voltage 24kV, frequency 50Hz three-phase power system,
As a protection and control appliance, due to the special advantages of the vacuum circuit breaker, it is especially suitable for frequent operation of rated current, or multiple times to break the short circuit current.
VS1-24 series high voltage vacuum circuit breaker adopts fixed installation, mainly used for fixed switchgear, the circuit breaker can be used alone, but also can be used for ring network power supply, box transformer or various non-standard power supply systems.