FZN21-12DT630-20 Indoor High Voltage AC Vacuum Load Switch
Technical Parameters
Main technical parameters of load switch
|
Serial number |
Name |
Unit |
Data |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Rated frequency |
Hz |
50 |
|
3 |
Rated current |
A |
630 |
|
4 |
Rated active load breaking current |
A |
630 |
|
5 |
Rated closed-loop breaking current |
A |
630 |
|
6 |
Rated active load breaking current |
A |
31.5 |
|
7 |
Rated cable charging breaking current |
A |
10 |
|
8 |
Rated breaking current of no-load transformer |
A |
1250kVA Transformer No-load Current |
|
9 |
1min power frequency withstand voltage: vacuum break, phase-to-phase, phase-to-ground/isolation break |
kV |
42/48 |
|
10 |
Lightning impulse withstand voltage: vacuum break, phase-to-phase, phase-to-ground/isolation break |
kV |
75/85 |
|
11 |
Rated short-time withstand current (thermal stability) and time |
kA/s |
20/4 |
|
12 |
Rated peak withstand current (dynamic stability) |
kA |
50 |
|
13 |
Rated short-time making current |
kA |
50 |
|
14 |
Rated current breaking times |
Second-rate |
10000 |
|
15 |
Mechanical life |
Second-rate |
10000 |
|
16 |
Allowable wear thickness of vacuum arc extinguishing contact |
mm |
2 |
|
17 |
Manual operating torque |
Nm |
≯200 |
Technical parameters of combined electrical appliances
|
Serial number |
Name |
Unit |
Data |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Rated frequency |
Hz |
50 |
|
3 |
Maximum rated current of fuse |
A |
125 |
|
4 |
Rated breaking current |
A |
3150 |
|
5 |
Switch opening time triggered by fuse |
ms |
40±5 |
|
6 |
Rated short-circuit breaking current (expected effective value) |
kA |
31.5 |
|
7 |
Rated short-circuit making current (expected peak value) |
kA |
50 |
|
8 |
1min power frequency withstand voltage: vacuum break, phase-to-phase, phase-to-ground/isolation break |
kV |
42/48 |
|
9 |
Lightning impulse withstand voltage: vacuum break, phase-to-phase, phase-to-ground/isolation break |
kV |
75/85 |
|
10 |
Fuse striker output energy |
J |
2/5 |