Description
This advanced load break switch comprises three essential parts: the disconnect blade, the vacuum interrupter, and the operation mechanism. The utilization of the vacuum arc-extinguishing chamber principle is the cornerstone of its exceptional functionality. The vacuum environment within the interrupter enables it to rapidly and effectively quench electrical arcs. This not only ensures a strong arc-extinguishing capability but also contributes to its reliable performance. The switch is engineered to have a long lifespan, reducing the need for frequent replacements and maintenance. Its compact size makes it a space-efficient solution, suitable for various installation scenarios. Moreover, the absence of explosion risk and zero pollution characteristics make it an environmentally friendly and safe choice for power distribution applications.
When combined with suitable vacuum load switches, the FZW32 switch plays a crucial role in power distribution systems across multiple industries. In the power sector, it helps in efficient power transmission and distribution within the 12kV – 45.5kV range, ensuring the stability of the grid. In metallurgy, it can handle the high-power demands and frequent switching requirements of industrial furnaces and other heavy machinery. The mining industry benefits from its reliable performance in harsh and potentially explosive environments, where safety and durability are of utmost importance. In the chemical sector, it can control and protect electrical circuits in plants with complex chemical processes and corrosive atmospheres. It is especially well-suited for locations that demand frequent operations, such as industrial substations and distribution centers where load balancing and circuit isolation are regularly carried out.
The FZW32 switch is designed to operate under a wide range of ambient conditions. It can function smoothly at altitudes up to 2000m, which makes it suitable for installations in mountainous regions or high-altitude industrial sites. The ambient air temperature range from -30℃ to +40℃, with a daily temperature difference not exceeding 32K, allows it to endure both cold and hot climates. It can withstand wind pressures of up to 700Pa (equivalent to a wind speed of 34m/s), ensuring its stability even in windy areas. With a degree of air pollution of Grade IV as per the relevant standard (GB5585), it can handle moderately polluted environments. Additionally, its ability to tolerate seismic intensities of up to 8 degrees and ice thicknesses on insulation of up to 10mm makes it a reliable choice for regions prone to earthquakes and icing conditions.
Technical specification
No. |
Item |
Unit |
Data |
1 |
Rated Voltage |
KV |
12 |
24 |
40.5 |
2 |
Rated Frequency |
Hz |
50 |
50 |
50 |
3 |
Rated Current |
A |
630 |
1250 |
1250 |
4 |
Rated Active Load Breaking Current |
A |
630 |
1250 |
1250 |
5 |
Rated Loop Breaking Current |
A |
630 |
1250 |
1250 |
6 |
5% Rated Active Load Breaking Current |
A |
31.5 |
62.5 |
62.5 |
7 |
Rated Cable Charging Breaking Current |
A |
10 |
10 |
25 |
8 |
Rated No-load Transformer Breaking Capacity |
KVA |
1600 |
1600 |
1600 |
9 |
Rated Breaking Current of Capacitor Bank |
A |
100 |
100 |
100 |
10 |
1-minute Power Frequency Withstand Voltage: Vacuum Break Phase-to-phase,Phase-to-ground/lsolation Break |
KV |
42/48 |
52/65 |
68/95/110 |
11 |
LightningImpulse Withstand Voltage: Phase-to-phasePhase-to-ground/lsolation Break |
KV |
78/85 |
125/145 |
185/215 |
12 |
Rated Short-time Withstand Current (Thermal Stability) |
KA |
20 |
20 |
25 |
13 |
Rated Short-circuit Duration |
s |
4 |
4 |
4 |
14 |
Rated Peak Withstand Current (Dynamic Stability) |
KA |
50 |
50 |
63 |
15 |
Rated Short-circuit Open-close Current |
KA |
50 |
50 |
63 |
16 |
Mechanical Life |
Times |
10000 |
10000 |
10000 |
Product Main Structure Diagram
12kV
24kV
40.5kV