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Outline
FZW □ the -40.5/D1250-20 outdoors high vacuum isolation load switch (hereafter refers to as load switch) is three phase ac 50Hz, the rated voltage 40.5kV outdoors high-voltage switch equipment is suitable to opens breaks, the pass gathers city or countryside electrical power distribution system load current and the fuse minute breaks the shift electric current. Matches may uses by the electrically operated organization and the controller as the line section switch or the automatic partition. Because has used the new insulation structural design and the vacuum explosion chamber, after this load switch starts breaks has obviously obviously the fracture, concurrently has the isolator the function, in addition also has breaks the capacity in a big way, does not have the oil, thus does not have characteristic and so on pollution, non- explosion hazard, electricity life is long and exempts maintenance to the environment.
This load switch engineering factor conforms to national standard GB3804.1-xx, the 3~36kV a.c. high voltage load switch and the GB/T11022-1999 high-voltage switch equipment and the control device standard altogether uses the specification
Use environment and condition
a. Ambient air temperature ± 40 ℃ within;
b. The contamination rank is not bigger than III level;
c. The altitude above sea level does not surpass 1,000 meters;
d. The wind pressure does not surpass 700Pa (to be equal to wind speed 34 meters/seconds);
e. The temperature anxiously falls when the high humidity time may congeal the dew;
f. Does not have place which the fire, the detonation, chemistry corrodes;
g. The non- regular fierce vibration, the earthquake intensity does not surpass 8.
Main engineering data
The load switch main technical parameter see Table 1
|
Serial number |
Project
|
Unit |
Parameter
|
|
1 |
Rated voltage |
kV |
40.5 |
|
2 |
Nominal current |
A |
630 、 1250 |
|
3 |
Labor frequency pressure resistance (1 minute) |
|
|
|
After vacuum explosion chamber fracture (in front of electricity life) |
kV |
70 |
|
Alternates with, relatively (dryly tries) |
kV |
95 |
|
Alternates with, relatively (wet tries) |
kV |
85 |
|
The isolation fracture (dryly tries) |
kV |
110 |
|
The isolation fracture (wet tries) |
kV |
95 |
|
4 |
Lightning surge pressure resistance |
|
|
|
Alternates with, relatively |
kV |
185 |
|
Isolation fracture |
kV |
215 |
|
5 |
The rating short-circuits the pass to gather the electric current (peak value) |
kA |
50 |
|
6 |
The rating moves the steady state current (peak value) |
kA |
50 |
|
7 |
4 seconds heat-stable electric currents |
kA |
20 |
|
8 |
Fixed electric cable charge drop-out current |
A |
10 |
|
9 |
Mechanical life |
次 |
10000 |
|
10 |
Gross weight |
kg |
300 |
The load switch main technical parameter see Table 2
|
Serial number |
Project |
Unit |
Parameter |
|
1 |
The contact opens the distance |
mm |
14 ± 1 |
|
2 |
Contact overtravel |
mm |
2 ± 0.5 |
|
3 |
Three-phase minute nature |
ms |
≤ 5 |
|
4 |
Each return route DC resistance |
μΩ |
≤ 200 |
|
5 |
Minute floodgate time |
s |
≤ 8 |
|
6 |
Gathers Floodgate time |
s |
≤ 8 |
|
