FZRN25-12D Indoor high voltage vacuum load switch
Model and meaning
Overview
FZRN25-12D/T630-20 indoor high-voltage 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 industrial and mining enterprises distribution stations and substations. As a protection and control of electrical facilities, it is used to separate and connect load current, closed-loop current, no-load transformers and cable charging current.
It 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. FZRN25-12D/T200-31.5 indoor high-voltage vacuum load switch-fuse combination electrical appliance (hereinafter referred to as combination electrical appliance) is an indoor device with three-phase AC 50Hz and rated voltage 12KV. It is suitable for industrial and mining enterprises, power distribution stations and substations, etc., 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
|
Name |
Unit |
FZRN25-12D/T630-20 |
FZRN25-12D/T200-31.5 |
|
|
Rated voltage |
kV |
12 |
||
|
Rated current |
A |
630 |
200 |
|
|
Rated frequency |
HZ |
50 |
||
|
Rated insulation 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 |
||
|
Rated short circuit withstand current |
kA |
20 |
|
|
|
Rated short circuit duration |
S |
4 |
|
|
|
Rated peak withstand current |
kA |
50 |
|
|
|
Rated effective load breaking current |
A |
630 |
|
|
|
Rated closed-loop breaking current |
A |
630 |
|
|
|
Rated cable charging breaking current |
A |
10 |
|
|
|
Rated breaking capacity of no-load transformer |
kVA |
1600 |
||
|
Rated short-circuit breaking current |
kA |
- |
31.5 |
|
|
Rated transfer current |
A |
|
200 |
|
|
Fuse model |
|
|
SDLAJ-12 SFLAJ-12 |
|
|
Impactor output energy |
J |
|
1+0.5 |
|
|
Rated short-circuit making current |
kA |
50 |
80 (expected value) |
|
|
Rated short-time withstand current of grounding switch |
kA |
20 |
||
|
Rated short-circuit duration of earthing switch |
s |
2 |
||
|
Rated peak withstand current of grounding switch |
kA |
50 |
||
|
Auxiliary circuit rated voltage |
V |
≌220≌110 |
||
|
Mechanical life |
Second-rate |
10000 |
||