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.