FZW32-40.5
Outdoor high voltage AC vacuum isolation load switch
FZW32-40.5/1250-25 outdoor high-voltage isolated vacuum load switch (hereinafter referred to as load switch) is a new generation of high-voltage electrical equipment developed by our company and produced by our company. This product has undergone strict type test and long-term trial operation evaluation. , all technical performance indicators all meet GB3804 and IE standards, applicable to the rated voltage 40.5kV, rated current 1250A, three-phase AC 50Hz power supply network.
Product model and meaning
Main features
1. Vacuum arc extinguishing, no explosion hazard, no need for maintenance.
2. The isolation knife is interlocked with the three-phase vacuum interrupter, and there is a clear isolation fracture when opening.
3. The parts of the body are all made of stainless steel. The bottom frame is made of stainless steel or hot-dip galvanized with carbon steel material for UV protection coating to ensure the normal operation of the machine in outdoor environment.
4. The installation method is mainly double-bar type and electric operation, and can also be operated by electric or remote control.
5. Large breaking capacity, safe and reliable, long electrical life and frequent operation.
6. It is widely used in the transformation of distribution lines such as rural power grids, urban networks and railways.
Main technical data
|
Serial number |
name Weigh |
unit |
Parameter value |
|
1 |
Rated voltage |
kV |
40.5 |
|
2 |
Rated frequency |
Hz |
50 |
|
3 |
Rated current |
A |
1250 |
|
4 |
Rated active load breaking current |
A |
1250 |
|
5 |
Rated closed-loop breaking current |
A |
1250 |
|
6 |
5% rated active load breaking current |
A |
62.5 |
|
7 |
Rated cable charging breaking current |
A |
25 |
|
8 |
1min power frequency withstand voltage: vacuum fracture, phase, relative / isolation fracture |
kV |
68/95/110 |
|
9 |
Lightning impulse withstand voltage: phase-to-phase, relative/isolated fracture |
kV |
185/215 |
|
10 |
Rated short-time withstand current (thermal stability) |
kA |
25 |
|
11 |
Rated short circuit duration |
S |
4 |
|
12 |
Rated peak withstand current (dynamic stability) |
kA |
63 |
|
13 |
Rated short circuit closing current |
kA |
63 |
|
14 |
Mechanical life |
Times |
10000 |
|
15 |
Vacuum interrupter contacts allow wear thickness |
mm |
0.6 |
|
16 |
Manual torque |
nm |
300 |
|
17 |
Grounding knife mechanical life |
Times |
2000 |
|
18 |
Grounding knife stability |
kA |
40 |
Technical parameters of assembly adjustment of load switch vacuum interrupter are shown in the table.
|
Serial number |
name Weigh |
unit |
Parameter value |
|
1 |
Contact opening distance |
mm |
13±1 |
|
2 |
Average opening speed |
m/s |
1.4±0.2 |
|
3 |
Three-phase contact is opened in different periods |
ms |
5 |
|
4 |
Three-phase contact closing |
ms |
2 |
|
5 |
Charged body and relative distance |
mm |
>420 |
|
6 |
Auxiliary loop resistance |
M 0 |
400^R^1000 |
The technical parameters of the isolation knife assembly adjustment are shown in the table.
|
Serial number |
name Weigh |
unit |
Parameter value |
|
1 |
Isolation knife positive pressure |
N |
500 ±50 |
|
2 |
The last separation point of the contact knife to the static contact distance is small fracture/large fracture |
mm |
5=180/420 |
|
3 |
In and out line resistance |
M 0 |
At 150 |
Dimensional drawing
Note: The creepage distance of this load switch is 1506mm, and the dry arc is 600mm away.
Installation diagram
Fzw32-40.5 (electric) load switch installation diagram
