KEEYA, a distinguished manufacturer based in China, specializes in the production of cutting-edge Indoor High Voltage Load Switches. With a state-of-the-art factory, KEEYA has established itself as a leading player in the electrical equipment industry. Their expertise and commitment to excellence ensure that their load switches meet the highest standards of quality and reliability. KEEYA collaborates with reputable suppliers to source top-notch components, guaranteeing the exceptional performance of their products.
Keeya, a leading factory and trusted supplier, stands out in the electrical equipment industry with its expertise in producing cutting-edge Indoor High Voltage Load Switches. Engineered with precision in our state-of-the-art facility, these load switches showcase advanced technology and unmatched reliability in managing high-voltage loads. As dedicated suppliers, we prioritize collaboration with reputable suppliers, ensuring the incorporation of top-notch components to guarantee exceptional performance and safety. With our new line of Indoor High Voltage Load Switches, Keeya continues to set the benchmark for durability, efficiency, and modern technology. Choose Keeya as your supplier for the latest in load switch technology and experience the future of reliable and advanced electrical control.
The FZN25-12 series Indoor High Voltage Load Switch operate on a three-phase AC system with a frequency of 50Hz, designed for indoor installations at a rated voltage of 12kV. These switches find crucial application in a variety of settings, including industrial and mining enterprises, clinics, substations, and more. They serve as vital electrical protection and control devices for managing division and load current, loop current, no-load transformer operations, and cable charging current.
In urban distribution and industrial power setups, the FZN25-12 series load switch, in conjunction with the three-phase combination apparatus, proves essential. It ensures efficient load control and short circuit protection in three-phase ring networks or terminal power supply configurations. The combination with electrical transformers and other equipment enhances circuit reliability and cost-effectiveness, particularly benefiting ring networks, double radiation power supply units, and box-type substations.
1. Elevation: Up to 1000 meters above sea level.
2. Ambient air temperature: Maintained within the range of -25°C to +40°C.
3. Relative humidity: Daily average not exceeding 95%, and monthly average not surpassing 90%.
4. Seismic activity: Intensity not exceeding 8° on the Richter scale.
5. Absence of fire hazards, explosive atmospheres, chemical corrosives, and excessive vibrations.
6. Pollution class: II
|
serial number |
project |
units |
parameter |
||
|
FZN25-12D/T630-20 |
FZRN25-12D/T125-31.5 |
||||
|
1 |
The rated voltage |
KV |
12 |
||
|
2 |
Rated frequency |
HZ |
50 |
||
|
3 |
Rated current |
A |
630 |
125 |
|
|
4 |
Rated insulation level |
Voltage withstand 1min power frequency |
KV |
Arc extinguishing chamber fracture 30;To the ground, interphase 42;Isolation fracture 48 |
|
|
Lightning shock withstand voltage |
KV |
To the ground, phase 75;Isolation fracture 85 |
|||
|
5 |
Rated dynamic stability current (peak) |
KA |
50 |
- |
|
|
6 |
4S heat stabilized 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 break current |
A |
10 |
10 |
|
|
10 |
Turn off the no-load transformer capacity |
KVA |
1250 |
1250 |
|
|
11 |
Rated short circuit breaking current |
KA |
- |
31.5 |
|
|
12 |
Rated transfer current, rated transfer current |
A |
- |
2000 |
|
|
13 |
Fuse type |
|
- |
SDLAJ-12 SFLAJ-12 |
|
|
14 |
Impactor outputs energy |
J |
- |
2-5（medium） |
|
|
15 |
Rated short circuit closing current |
KA |
50 |
||
|
16 |
Ground switch rated dynamic stable current |
KA |
50 |
||
|
17 |
2S thermal stability current of ground switch |
KA |
20 |
||
|
18 |
Rated voltage of auxiliary circuit |
V |
AC/CD:220/110 |
||
|
19 |
Mechanical life |
next |
10000 |
||
1. Featuring both manual operation and AC/DC operation modes, it meets the requirements of a "three-remote" power system.
2. The isolation and elimination of the insulation plate effectively prevents internal arc short-circuit accidents caused by insulation board fractures.
3. The specially structured brake valve, load switch points, and automatic fracture isolation of the back door provide robust protection.
4. Copper contacts at the outlet and inlet lines have increased thickness to enhance conductivity while maintaining their original purpose.
