FZW28-12(VSP5) type outdoor HV AC SF6 insulation vacuum load break switch is used to open and close load current and short-circuit current in the power distribution system with rated voltage 12kV, three-phase AC 50/60Hz. It is applicable to substations, industrial and mining enterprises, urban and rural electric power networks, especially to the occasions with frequent operation and urban and rural automatic power distribution networks for power network control and equipment protection. The switch has the functions of manual operation and electric operation. The product conforms to the standards of IEC 60265-1, IEC62271-103 & GB/T3804: High voltage AC load break switch.
1. Altitude: ≤3000m;
2. Ambient temperature: -30℃～+45℃；diurnal temperature rang ≤25℃;
3. Wind speed: ≤35m/s;
4. Earthquake intensity: ≤grade 8;
5. Relative humidity: monthly average ≤90%; daily average ≤95%;
6. Ice thickness: ≤10mm
7. Pollution degree: ≤Ⅳ(GB5582);
8. Applicable occasions: no fire and explosion danger, no chemical corrosion and no frequent severe vibration.
Main function features
1. SF6 gas insulation: SF6 gas is the non-toxic, non-combustible and electrical insulation gas, it has excellent arc-extinguishing performance;
2. Besides the standard porcelain bushing, a variety of options are available including silicon rubber insulator on the epoxy equipment bushing;
3. Visible Open/Close: The main contact position indicator marked by colors (Green-Open; Red-Close) can be easily visible from the ground. The indicator is connected directly to the main contact drive shaft assembly to ensure displaying the contact state accurately;
4. Reliable sealing performance with IP67 Protection Level: The mature sealing technoloty assures reliable sealing performance. The shell is processed by die drawing once-shaping technology, so it’s easy for the case sealing with high air tightness and high mechanical strength.
5. Free maintainance: The main loop of circuit breaker, the secondary component and the operation mechanisn are all sealed in SF6 gas(zero gauge pressure), so they are not affected by the external environment, and have stable & reliable performance as well as the advantage of free maintianance.
6. Good performance of incoming and outgoing line: The switch can adopt cable incoming & outgoing method, or can use liquid silicon rubber corner bushing to make the distance between phases up to 280mm and ensure good performance of external insulation.
7. Safe usage: Anti-explosive device mounted on the top of box can prevent heated gas or matters from spattering out once the switch fault occurs.
Outline and installation dimension