| Brand | Wone Store |
| Numero ng Modelo | Single-phase na Magnetically controlled vacuum circuit breaker |
| Nararating na Voltase | 12kV |
| Narirating na kuryente | 630A |
| Narirating na agos ng pagkakawaswas sa short circuit | 25kA |
| Serye | MS |
Ang serye ng MS2-12-630/20-XX na mga circuit breaker ay mga indoor switchgear batay sa semi-hard magnetic material actuator mechanisms. Ginagamit ito sa three-phase AC power systems na may rated voltage ng 12KV at frequency na 50-60Hz, bilang isang protective at control device. Ito ay partikular na angkop para sa madalas na operasyon sa rated current o maramihang pag-break ng short-circuit currents. Ang serye ng mga circuit breaker na ito ay kasama ang circuit breaker at ang drive module.
Ang istraktura ng circuit breaker
Bawat phase ay may isang actuator mechanism, na inilalapat nang perpendicularly at axially sa vacuum interrupter. Ang tatlong excitation coils ay konektado sa parallel. Ang three-phase actuator
mechanisms ay nagkakamit ng synchronous action sa pamamagitan ng synchronous shaft at samantalang ginagawa ang auxiliary switch position signal output.
Ang vacuum interrupter ay gumagamit ng external bellows, at ang bellows ay gawa sa stainless steel lamination welding process. Ang contact opening distance ay 8mm at ang overtravel ay 2mm. Ang contacts ay disenyo batay sa prinsipyo ng longitudinal magnetic field arc extinguishing.
Contact pressure spring sa insulating rod upang matiyak ang maasahan na contact sa pagitan ng moving at static contacts ng VI at na ang related actions ay sumunod sa operational characteristic
requirements.
Ang insulating frame ay gawa ng SMC, na nakapaligid sa upper at lower terminals, operating insulating rods, flexible connections, vacuum interrupters at iba pang components, na naglalaro ng papel ng insulation at support.
Paggamit
Angkop para sa air insulated switchgear, para sa arc elimination line selection, phase selection, bypass at iba pang aplikasyon.
Teknolohiya parameters
No. |
Item |
Unit |
MS4-21 |
MS4-22 |
1 |
Rated voltage |
kV |
12 |
12 |
2 |
Rated current |
A |
630 |
630 |
3 |
Rated power frequency withstand voltage |
kV |
42 |
42 |
4 |
Rated impulse withstand voltage |
kV |
85 |
85 |
5 |
Rated short circuit breaking current |
kA |
20 |
25 |
6 |
Rated peak withstand current |
kA |
50 |
63 |
7 |
Rated short-circuit withstand current |
kA |
20 |
25 |
8 |
Duration of short circuit |
s |
4 |
4 |
9 |
Rated frequency |
Hz |
50 |
50 |
10 |
Phase center distance |
mm |
200 |
200 |
11 |
Contact distance |
mm |
8±0.5 |
8±0.5 |
12 |
Over travel |
mm |
2±0.5 |
±0.5 |
13 |
Rated operation cycle |
- |
O-0.3s-CO-15s-CO |
|
14 |
Inherent closing time(don’t include DM time) |
ms |
< 25 |
< 25 |
15 |
Different time of closing operation |
ms |
≤2 |
≤2 |
16 |
Bouncing time |
ms |
≤2 |
≤2 |
17 |
Inherent opening time(don’t include DM time) |
ms |
5±0.5 |
5±0.5 |
18 |
Different time of opening operation |
ms |
≤2 |
≤2 |
19 |
Mechanical operations (CO-cycles) |
Times |
50000 |
50000 |
20 |
Rated short-circuit-breaking current time |
Times |
50 |
50 |
21 |
Number of auxiliary switches |
pcs |
3NO+2NC |
|
22 |
Weight |
kg |
13 |
13 |
Note:Kailangan idagdag ang aluminum heat sinks.
Sukat
