| Brand | ROCKWILL |
| Numero ng Modelo | High-voltage pneumatic load break switch Mataas na boltahan na pneumatic load break switch |
| Nararating na Voltase | 12kV |
| Narirating na kuryente | 630A |
| Narirating na pagsasalungat | 50/60Hz |
| Serye | FKN |
Product Overview
Ang mataas na volt na pneumatic load break switches at ang kanilang kombinadong elektrikal na aparato ay mga indoor high-voltage switchgear para sa AC 12kV, 50Hz. Ang load break switch na ito ay may mataas na partikular na teknikal na parametro at maasintas na pagkilos. Ang basic form ng operating mechanism ay manual spring-energy-storage type, at maaari ring makapag-angkop ng isang electromagnetic spring operating mechanism. Batay sa pneumatic arc-extinguishing principle, maaari itong mag-interrupt nang maraming beses nang walang pagpalit ng arc-extinguishing tube.
Ang mataas na volt na load break switch ay maaaring isara, dalhin, at buksan ang load currents sa normal na kondisyon ng circuit, at may kakayahan na isara ang short-circuit currents at buksan ang short-circuit currents sa loob ng inilarawan na maikling panahon.
Ang load break switches ay maaaring makapag-angkop ng earthing switches. Ang earthing switch ay may parehong short-circuit making capacity bilang ang load break switch, pati na rin ang dynamic at thermal stability capability, at may mahigpit na mechanical interlock kasama ang load break switch, na nagbibigay-daan upang hindi posible ang misoperation sa aspeto ng estruktura.
Key Features
Kapag ang FKN12-12 load break switch ay mayroong mataas na volt na current-limiting fuse (may striker) upang mabuo ang isang load break switch-fuse combination, ito ay gumagampan bilang overload at short-circuit protection para sa mga load (tulad ng mga power transformers). Kapag ang isa o higit pang phases ng fuse ay bumagsak, ang tatlong phases ng load break switch ay awtomatikong bubuksan.
Ang mataas na volt na load break switch ay angkop para sa pag-install sa ring-main unit switch cabinets at iba pang uri ng switch cabinets para sa pagsasangkot at pagdidistribute ng electrical energy.
Technical Parameters
Serial No. |
Name |
Unit |
Value |
1 |
Rated Voltage |
KV |
12 |
2 |
Rated Frequency |
Hz |
50 |
3 |
Rated Current |
A |
630 |
4 |
Maximum Rated Current of Fuse |
A |
100 |
5 |
Rated Active Load Breaking Current, Rated Closed-loop Breaking Current |
A |
630 |
6 |
Rated Short-time Withstand Current (2S) |
KA |
20 |
7 |
Rated Short-circuit Making Current, Rated Peak Withstand Current |
KA |
50 |
8 |
1min Power Frequency Withstand Voltage, Phase-to-phase and to-ground / Break |
KV |
42/48 |
9 |
Lightning Impulse Withstand Voltage (Peak Value), Phase-to-phase and to-ground / Break |
KV |
75/85 |
10 |
Rated Cable Charging Breaking Current |
A |
10 |
11 |
Rated Breaking of No-load Transformer |
KVA |
1250 |
12 |
Mechanical Life |
Times |
2000 |
13 |
Rated Breaking Transfer Current |
A |
1150 |
14 |
Rated Short-circuit Breaking Current of Fuse |
KA |
31.5 |
Main Mechanical Characteristics of Load Break Switch
Serial No. |
Name |
Unit |
Value |
Remarks |
1 |
Phase-to-phase Center Distance |
mm |
210 ± 3 |
|
2 |
Total Stroke of Conductive Rod |
mm |
215 ± 5 |
|
3 |
Distance Between Moving and Static Arc at Opening Position |
mm |
>160 |
|
4 |
Over-stroke of Electrical Contact of Moving Contact Rod |
mm |
42 ± 3 |
|
5 |
Just-Closing Speed |
m/s |
3.8 <sup>+0.7</sup><sub>-0.2</sub> |
|
6 |
Just-Opening Speed |
m/s |
>2.7 |
|
7 |
Three-phase Closing Asynchronism |
ms |
>10 |
Contact between moving contact rod and contact fingers |
8 |
Three-phase Opening Asynchronism |
ms |
>5 |
Separation between moving contact rod and contact fingers |
Altitude: Hindi lumalampas sa 1000m.
Ambient Temperature: Maximum +40°C, Minimum -10°C.
Relative Humidity: Daily average hindi lumalampas sa 95%, Monthly average hindi lumalampas sa 90%.
Seismic Intensity: Less than 8 degrees.
