Product Description
The ZW8-12 outdoor vacuum circuit breaker is designed for 12kV, 50/60Hz three-phase AC systems. It serves as a critical switching device for the modernization and automation of distribution networks, widely used for load switching and fault protection (including short-circuit and overload protection) in urban and rural distribution grids and industrial parks.
The ZW8-12 outdoor vacuum circuit breaker features a core vacuum interrupter (VI) characterized by rapid arc extinguishing, low switching overvoltage, environmental friendliness, and a maintenance-free design.
It boasts a compact, moderately weighted design that allows for quick and easy installation. The stainless-steel enclosure effectively protects internal components from rain, dust, and condensation.
High-voltage insulation components utilize premium composite materials and an optimized structural design, offering excellent pollution resistance and dielectric stability against aging; this ensures reliable operation in harsh outdoor environments, such as those with high dust or humidity.
The unit comes standard with a manual spring operating mechanism, with an optional electric control unit available for remote operation. Additionally, external connection points for visible interlocking devices can be added to ensure operational safety during maintenance.
The ZW8-12 outdoor vacuum circuit breaker can integrate voltage transformers (PT) and current transformers (CT) to support metering, protection, remote alarming, and telemetry functions. This enables seamless integration with distribution network SCADA systems, facilitates smart grid development, and eliminates the need for on-site personnel.
Manufacturers offer customization, enhanced anti-corrosion options, and neutral export packaging based on user specifications, alongside comprehensive technical documentation that meets the requirements of both domestic engineering projects and international tenders.
Product Specification
|
Item |
Parameter |
Item |
Parameter |
|
Rated voltage |
12kV |
Rated operating sequence |
Open-0.3s close open-180s close open |
|
Rated current |
630A |
Rated short-circuit current breaking times |
30 times |
|
power-frequency withstand voltage |
42kV/48kV |
Mechanical life |
10000 times |
|
lightning impulse withstand voltage (peak) |
75kV/85kV |
Rated operating voltage (closing/opening coil) |
DC220V & AC220V |
|
Rated short-circuit breaking current (effective value) |
25kA |
Allowable wear thickness of moving and stationary contacts |
3mm |
|
Rated short-circuit making current (peak) |
50kA |
Disconnection distance of isolation fracture |
>200mm |
Operating Environment Conditions
- Ambient temperature: -40℃ ~ +40℃
- Altitude: ≤ 2000 m above sea level
- Maximum wind speed: ≤35 m/s
- Seismic intensity: ≤ Grade 8
- Pollution degree: Class III. Longer creepage insulators available upon request for heavy pollution area.
- No explosive hazard, corrosive gas or heavy conductive dust in surrounding atmosphere.
- Relative humidity: daily average ≤95%, monthly average ≤90%.
Our Product Advantage
Environmentally friendly and maintenance-free. Utilizes high-quality vacuum interrupters (SF6-free) to ensure rapid arc extinction, low switching overvoltage, and minimal contact wear; requires no long-term maintenance and poses no risk of fire or explosion.
Designed for harsh operating conditions. Features aging- and pollution-resistant silicone rubber composite insulators and a sealed stainless steel enclosure that is waterproof, dustproof, and condensation-resistant; corrosion-resistant metal components make it suitable for humid, dusty, and coastal (salt-mist) environments.
Optional external disconnect switch available. The spring mechanism supports manual energy storage and can be fitted with an electric controller for remote opening and closing; models with disconnect switches feature clearly visible break points and mechanical interlocking for maintenance safety; integrated CT/PT options allow for combined protection and metering functions.
Includes reserved auxiliary signal interfaces; compatible with FTU controllers and SCADA systems, supporting telemetry, remote signaling, and remote control functions; meets requirements for urban and rural distribution automation, network sectionalizing, and automatic fault isolation.
High installation efficiency. Compact and lightweight structure optimized for pole-mounted installation; easy to install and commission, significantly reducing on-site construction time.
Comprehensive technical documentation provided for export applications. Each unit undergoes rigorous Factory Acceptance Testing (FAT) to ensure stable performance and compliance with IEC standards. JASCO provides type test reports, certificates of conformity, and manufacturer authorization letters; supports neutral export packaging; offers parameter customization and anti-corrosion solutions; and ensures reliable pre-sales and after-sales technical support.
FAQ
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