VSG-24 series lateral type indoor high voltage vacuum circuit breaker applies to three-phase AC 50(60)Hz 24KV power system, which can be used for switching load current, overload current and fault current in industrial and mining enterprises, power plant, transformer substation and suitable for frequent operation occasions It also widely applies to projects, as power plant, power system, petrifaction, metallurgy, metro, airdrome, building, etc.
Environmental Conditions
♦ Ambient temperature: -10°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 |
6 | Rated short circuit breaking current |
kA |
25, 31.5 |
7 | Rated short circuit making current (peak) |
63, 80 |
|
8 | Rated short time withstand current |
25, 31.5 |
|
9 | Rated peak value withstand current |
63, 80 |
|
10 | Rated short circuit duration | s |
4 |
11 | Rated operating sequence |
O-0.3s-CO-180s-CO |
|
12 | Secondary circuit power frequency withstand voltage (1min) |
V |
2000 |
13 | Rated sing e/back-to-back capacitor bank breaking current |
kA |
630/400 |
Breaking time | ms |
20 〜50 |
|
1? | Opening time |
35 〜70 |
|
16 | Mechanical life |
times |
10000 |
17 |
Electrical life |
E2 class |
|
18 |
Allowed cumulative wearing thickness of moving contact and fixed contact | mm |
3 |
19 |
Clearance between open contacts | mm |
13±1 |
20 |
Over travel | mm |
3±1 |
No |
Item |
Unit |
Value |
21 |
Average closing speed |
m/s |
0.6〜1.0 |
22 |
Average opening speed |
m/s |
0.9〜1.7 |
23 |
Rated voltage of energy storage motor | V |
DC 220/DC110 |
24 |
Power of energy storage motor | W |
90 |
25 |
Contact closing bounce time |
ms |
<2 |
26 |
Three phase opening and closing asynchronism |
ms |
<2 |
27 | Each phase conductive circuit resistance |
uQ |
<45(630A); <35(1250A) |
28 | Contacts pressure | N |
3100 〜3″。 |
29 | Charging time | s |
<15 |
General Structure Drawing and Installation (unit: mm)
A |
B |
C |
210 |
550 |
901 |
230 |
600 |
941 |
275 |
650 |
1031 |