| Customization: | Available |
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| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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Specification:
ZW32-12 type outdoor pole-mounted HV vacuum CB (hereinafter referred to as CB) is rated voltage12kV, 50Hz three-phase AC outdoor power distribution equipment used for power distribution network to break and close load current, over-load current and short-circuit current in electric systems. It is used in substation and industrial & mining enterprise power distribution system for protection and control, better fits countryside power grid and frequent operation places, especially for the retrofit of urban power network and countryside power network. Characteristic:
The CB applies three-phase pole-type structure. It has characteristics of stable closing/breaking property, no fire or explosion danger, maintenance-free, small dimension, small weight, long service life, etc.
The CB is hermetical sealed, and is moisture-resistant, anti-condensation. It is especially suitable for application at severe cold and damp areas.
Three-phase pillar and current transformer apply imported outdoor epoxy resin solid insulation materials. It is high/low temperature resistant, UV-resistant and anti-ageing.
The operating mechanism is miniature spring operating mechanism with low breaking/closing energy consumption. The driving of it applies straight transmission with little components and high reliability. The operating mechanism is enclosed in a cabinet, and that makes it rust-resistant and more reliable.
The CBS are electrically and remote controlled, also can be manually controlled. They can be fitted with controllers to realize electric automation or to form auto-reclosing device with reclosing controller.
They are also fitted with disconnectors of clear isolation opening and have reliable mal-operation prevention mechanical interlocking device between CBS. And the disconnectors are easily detachable.
CBS can be fitted with two-phase or three-phase current transformers for automatic over-current release and supplying circuit information for intelligent controller.
Weight of CB<100kg
Overall dimension: H× W× D 740x960x880 (with isolation) 720x900x240 (without isolation)
| Items | Unit | ZW32-12/400 | ZW32-12/630 | ZW32-12/1250 | |
| Rated voltage | kV | 12 | |||
| Rated current | A | 400 | 630 | 1250 | |
| Rated short circuit breaking current | kA | 20/25 | |||
| Rated short circuit making current (peak value) |
50 | ||||
| Rated peak withstand current | 50 | ||||
| Rated short circuit withstand current | 50 | ||||
| Rated short circuit duration | S | 4 | |||
| Rated insulating level | 1 minimum PF withstand voltage | Phase to phase, to ground 40, fracture 48 | |||
| Lightning impolse withstand voltage peak value | phase to phase, to ground 75, fracture 85 | ||||
| Rated sequence of operations | O-0.3s-CO-180s-CO | ||||
| Rated short circuit current breaking time | 30 | ||||
| Mechanical endurance | 10,000 | ||||
| Rated operation voltage (opening, closing coil) |
V | DC220,110 AC220,110 | |||
| Moving and fixed contact allowance wearing collation thickness |
mm | 3 | |||
| Over-current release nominal current | 5 | ||||
| Current transformer ratio | A | 200/5,400/5 and 600/5 | |||
| 1 minimum second PF withstand voltage | mm | 2 | |||
| Over current tripping current | A | 5 | |||
| Rated single capacitor bank switching current |
kA | 630 | |||
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