ZW20Z-12 Series Outdoor High Voltage Vacuum Circuit Breaker
Technical specification
|
Item |
Units |
Parameters |
|
Rated voltage |
kV |
12 |
|
Rated frequency |
Hz |
50 |
|
Rated current |
A |
630、1250 |
|
Rated short circuit breaking current |
KA |
12.5、16、20、25 |
|
Rated peak withstand current(peak) |
kA |
31.5、40、50、63 |
|
Rated short-time withstand current |
kA |
12.5、16、20、25 |
|
Rated short circuit making current(peak value) |
kA |
31.5、40、50、63 |
|
Mechanical life |
Times |
10000 |
|
Breaking times of rated current |
Times |
10000 |
|
Breaking times of rated short-circuit breaking current |
Times |
30 |
|
1min PF withstand voltage: interphase, to earth/fracture |
kV |
42 |
|
Lightening impulse withstand voltage(peak): interphase, relative/broken circuit |
kV |
75 |
|
Secondary loop 1min power frequency tolerance |
kV |
2 |
|
Net weight |
kg |
140 |
Product Model
Dimension
Product Functions
◆Comprehensive Current Switching: Safely opens and closes load currents and short-circuit currents in 10-12kV power systems.
◆Vacuum Arc Extinguishing: Utilizes vacuum interruption technology with SF6 gas insulation for superior arc quenching performance.
◆Reclosing Function: When combined with controller, provides excellent auto-reclosing capability for distribution automation.
◆Overcurrent Protection: Integrated overcurrent protection features enhance system safety and equipment protection.
◆Status Indication: Spring energy storage indication provides visual confirmation of mechanism status for operators.
Applicable Environment
◇Rated System: Suitable for 12kV, 50Hz three-phase AC outdoor power distribution systems.
◇Installation Type: Pole-mounted outdoor installation for overhead line applications.
◇Application Scope: Ideal for substations, industrial plants, mining enterprises, and frequent operation grid locations.
◇Climate Adaptability: Fully sealed SF6 insulation ensures operation unaffected by environmental conditions.
◇Distribution Automation Ready: Compatible with controllers for automated distribution system requirements.
Product Highlights
◆Hybrid Arc Quenching: Combines vacuum arc extinguishing with SF6 gas insulation—vacuum interrupts the arc while SF6 provides dielectric insulation—optimizing performance and reliability.
◆Superior Mechanical Reliability: Optimized spring mechanism and multilevel drive chain deliver operational stability several times better than traditional domestic mechanisms.
◆Low Loss Electrical Design: Loop-type bracelet structure between main shaft and sleeve contacts minimizes contact resistance and reduces temperature rise for improved efficiency.
◆Distribution Automation Ready: Features overcurrent protection, spring energy storage indication, and secondary outlet for seamless integration with intelligent controllers and auto-reclosing systems.
◆Frequent Operation Capability: Specifically designed for power grids requiring frequent switching, with robust construction for repeated duty cycles.