| Brand | ROCKWILL |
| Numero ng Modelo | Mataas na boltag na pneumatic load break switch |
| Tensyon na Naka-ugali | 12kV |
| Rated Current | 630A |
| Larawan na Pagsasahimpapawid | 50/60Hz |
| Serye | FKN |
Product Overview
Ang mataas na volt na pneumatic load break switches at ang kanilang kombinadong electrical appliances ay mga indoor high-voltage switchgear para sa AC 12kV, 50Hz. Ang load break switch na ito ay may mataas na espesipikong teknikal na parametro at maasintas na pag-utos. Ang basic form ng operating mechanism ay manual spring-energy-storage type, at maaari rin itong makapaglagay ng 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 high-voltage load break switch ay maaaring isara, dala, at buksan ang load currents sa normal na circuit conditions, at may kakayahan na isara ang short-circuit currents at buksan ang short-circuit currents sa loob ng ispesipikong maikling panahon.
Ang load break switches ay maaaring makapaglagay 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 sa load break switch, nagbibigay-daan upang hindi maaaring mali ang operasyon sa aspeto ng struktura.
Key Features
Kapag ang FKN12-12 load break switch ay may kasamang high-voltage current-limiting fuse (may striker) upang bumuo ng load break switch-fuse combination, ito ay gumagampan bilang overload at short-circuit protection para sa loads (tulad ng power transformers). Kapag ang isa o higit pang phase ng fuse ay sumabog, ang tatlong phase ng load break switch ay awtomatikong bubuksan.
Ang high-voltage load break switch ay angkop para sa pag-install sa ring-main unit switch cabinets at iba pang uri ng switch cabinets para sa pag-receive at pag-distribute 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: Mas kaunti sa 8 degrees.
