FZN25-12D Series indoor high voltage vacuum load switch
Technical specification
|
No. |
Item |
Units |
Parameters |
||
|
FZN25-12D/T630-20 |
FZRN25-12D/T125-31.5 |
||||
|
1 |
Rated voltage |
kA |
12 |
||
|
2 |
Rated frequency |
HZ |
50 |
||
|
3 |
Rated Current |
A |
630 |
125 |
|
|
4 |
Rated insulation level |
1min frequency voltage |
KV |
Interr upter Fracture30.on the ground, white 42. solaticon Fracture48 |
|
|
Lightning impulse withstand voltage |
KV |
On the ground, white 75 solation Fracture85 |
|||
|
5 |
Rated dynamic stability current(peak) |
KA |
50 |
- |
|
|
6 |
4Sthermal current |
KA |
20 |
- |
|
|
7 |
Rated active load breaking current |
A |
630 |
125 |
|
|
8 |
Rated closed-Loop breaking current |
A |
630 |
125 |
|
|
9 |
Rated cable charging breaking current |
A |
10 |
10 |
|
|
10 |
Breaking load transformer |
KVA |
1250 |
1250 |
|
|
11 |
Rated short-circuit breaking current |
KA |
- |
31.5 |
|
|
12 |
Rated transfer current, rated current transfer |
A |
|
2000 |
|
|
13 |
Fuse Model |
|
- |
SDLAJ-12SFLAJ-12 |
|
|
14 |
Impact energy output |
J |
- |
2-5(medium) |
|
|
15 |
Rated short circuit making current |
KA |
50 |
||
|
16 |
Ground switch rated Dynamic current |
|
50 |
||
|
17 |
Grounding switch 2Sthermal current |
KA |
20 |
||
|
18 |
Secondary circuit Rated voltage |
V |
AC/CD220:110 |
||
|
19 |
Mechanical life |
Times |
1000 |
||
Product Model
Dimension
Product Functions
◆Load Current Switching: Safely opens and closes load currents, including closed loop currents, no-load transformer currents, and cable charging currents.
◆Short-Circuit Protection (Composite Apparatus): FZRN25 model integrates a fuse to break any current from load levels up to rated short-circuit current.
◆Integrated Isolation & Interruption: Special transmission design links isolating fracture and vacuum interrupter, achieving one-time operation for both functions.
◆Dual Operation Modes: Supports both manual and electric operation for flexible control and automation compatibility.
◆Safe Grounding Interlock: The grounding switch is fully linked between the static and movable contacts for safe maintenance.
Applicable Environment
◇Rated System: Suitable for 12kV, 50Hz three-phase AC ring networks, terminal substations, and industrial electrical equipment.
◇Temperature Range: Reliable operation in ambient temperatures from -25℃ to +40℃, with alpine region suitability down to -40℃.
◇Installation Altitude: Designed for installation at elevations up to 1000 meters.
◇Humidity Tolerance: Withstands daily average humidity ≤95% and monthly average ≤90%.
◇Seismic Resistance: Capable of withstanding earthquake intensity up to 8 degrees.
◇Air Quality: Suitable for environments with no corrosive or flammable gases; certified for contamination grade II.
Product Highlights
◆Innovative Vacuum Design: Unique direct-acting mechanism energizes arc chamber only during switching, extending service life.
◆Compact & Lightweight: Advanced transmission structure reduces size and weight, saving installation space.
◆One-Step Operation: Combines isolating and arc extinguishing functions in a single action, simplifying control and boosting efficiency.
◆Maintenance Safety: Integrated grounding switch with linkage ensures visible earthing and full operator protection.
◆Full-Range Protection (FZRN25): Breaks all currents from load levels to short-circuit, removing the need for extra protection devices.
◆Wide Environmental Adaptability: Designed for extreme conditions, from -40℃ alpine regions to high-humidity environments.