FZN25-12/FZIRIN25-12D/T Indoor High Voltage AC Vacuum Load Switch
Overview
FZN25-12DVT630-20 indoor high-voltage AC vacuum load switch (hereinafter referred to as load switch) is an indoor device with three-phase AC 50Hz and rated voltage of 12kV. It is suitable for power distribution stations and substations of industrial and mining enterprises. As the protection and control of electrical facilities, it is used to open and close load current, closed-loop current, no-load transformer and cable charging current. It has the ability to close the grounding switch of short-circuit current. Its operating mechanism can be manual or electric, which is convenient for realizing the three control requirements of the power system.
FZRN25-12D/TI25-31.5 indoor high-voltage AC vacuum load switch-breaker combination device (hereinafter referred to as combination device) is an indoor device with three-phase AC 50H2z and rated voltage 12kV. It is suitable for industrial and mining enterprise power distribution stations and substations for load control and short-circuit protection. It also has a grounding switch capable of closing short-circuit current. Its operating mechanism can be manual or electric, which is convenient for realizing the three-remote control requirements of the power system.
Technical Parameters
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Serial number |
Project |
Unit |
Parameter |
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|
FZN25-12D/T630/20 |
FZRN25-12D/T200/31.5 |
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|
1 |
Rated voltage |
kV |
12 |
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|
2 |
Rated current |
A |
630 |
200 |
|
|
3 |
Rated frequency |
Hz |
50 |
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|
4 |
Rated absolute level |
1min power frequency withstand voltage |
kV |
Interrupter break 30; ground, phase 42; isolation break 48 |
|
|
Lightning impulse withstand voltage (peak value) |
kV |
To ground, between phases 75; isolation break 85 |
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|
5 |
Rated short circuit withstand current |
kA |
20 |
|
|
|
6 |
Rated short circuit duration |
s |
4 |
|
|
|
7 |
Rated peak withstand current |
kA |
50 |
|
|
|
8 |
Rated effective load breaking current |
A |
630 |
|
|
|
9 |
Rated closed-loop breaking current |
A |
630 |
|
|
|
10 |
Rated cable charging breaking current |
A |
10 |
|
|
|
11 |
Rated breaking capacity of no-load transformer |
kVA |
1600 |
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|
12 |
Rated short-circuit breaking current |
kA |
- |
31.5 |
|
|
13 |
Rated transfer current |
A |
|
200 |
|
|
14 |
Fuse model |
|
|
SDLAJ-12 SFLAJ-12 |
|
|
15 |
Impactor output energy |
J |
|
1+0.5 |
|
|
16 |
Rated short-circuit making current |
kA |
50 |
80 (expected value) |
|
|
17 |
Rated short-time withstand current of grounding switch |
kA |
20 |
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|
18 |
Rated short-circuit duration of earthing switch |
s |
2 |
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|
19 |
Rated peak withstand current of grounding switch |
kA |
50 |
||
|
20 |
Auxiliary circuit rated voltage |
V |
≌220 ≌110 |
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|
21 |
Mechanical life |
Second-rate |
10000 |
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