ROCKWILL 12kV Indoor Vacuum Circuit Breaker (VSC Series) Technical Solution
Ⅰ. Core Functions & Performance
Electrical Parameters
| Parameter | Value | Notes |
|---|---|---|
| Rated Voltage | 12kV | - |
| Rated Current | 630A, 800A, 1250A, 1600A | Customizable |
| Short-Circuit Breaking Capacity | 20kA, 25kA, 31.5kA | Customizable |
| Power-Frequency Withstand Voltage (1min) | Dry: 48kV / Wet: 38kV | DL/T403 Compliant |
| Lightning Impulse Withstand Voltage | 75kV | - |
| Mechanical Life | ≥10,000 operations | Spring mechanism, oil-free design |
| Short-Time Withstand Current (4s) | 31.5kA | - |
Control Characteristics
Operating Mechanism: Spring-operated (maintenance-free)
Coil Voltage (Closing/Tripping): AC/DC 110V/220V (optional)
Motor Operating Voltage: Customizable
Auxiliary Contacts: 8 NO (Normally Open) + 8 NC (Normally Closed)
Monitoring: Mechanical counter (operation records)
Ⅱ. Applications & Compatibility
Typical Applications
Power Systems: Power plants, substation in/outlet protection
Industrial: Petrochemical, metallurgical, main distribution cabinets for manufacturing
Public Facilities: Airports, data centers, residential distribution networks
Switchgear Compatibility
| Cabinet Series | Compatible Models |
|---|---|
| Domestic Cabinets | KYN28, KYN96, XGN series |
| International Cabinets | ABB ZS series |
Installation Type: Fixed (Lateral Type)
Note: Custom non-standard cabinets supported; installation drawings required.
Ⅲ. Technical Advantages & Innovations
Reliability Enhancement
Vacuum Interrupter: Explosion-proof, maintenance-free
APG Epoxy Casting: Monolithic insulation parts (humidity resistance ≤95%, pollution-proof)
VSC Terminal Buffer: Shock/vibration resistant (-25℃ ~ +40℃)
Safety & Maintenance
Interlocking: Mechanical lock to prevent load switching errors
Visual Position Indicator: Mechanical ON/OFF status display
Modular Design: Rapid replacement of coils/auxiliary switches
Ⅳ. Customization Services
| Customization Item | Options |
|---|---|
| Insulation Medium | Air-insulated / Gas-insulated (SF₆ alternative) |
| Secondary Wiring Layout | Front/Rear/Side wiring |
| Special Current Ratings | >1600A or >31.5kA designs |
| High-altitude Adaptation | ≤2500m (derating required for higher elevations) |
Ⅴ. Installation & Maintenance
Environmental Requirements
Altitude: ≤2500m (15% derating beyond)
Temperature: -25℃ ~ +40℃
Humidity: Daily average ≤90% (non-condensing)
IP Rating: IP2X (upgrades to IP4X when installed)
Documentation Support
Certificates, installation drawings, wiring diagrams
Type test reports compliant with GB/DL/IEC standards
Ⅵ. Typical Configurations (Examples)
| Application Scenario | Recommended Configuration | Protection Target |
|---|---|---|
| Substation Inlet Cabinet | VSC-1250A/31.5kA + Motorized | Main transformer short-circuit |
| Industrial Distribution Center | VSC-1600A/25kA + Rear Wiring | Large motor control |
| Commercial Complex | VSC-800A/20kA + Front Wiring | LV busbar segmentation |
Ⅶ. Support Services
Rockwill Electric Technical Guarantee:
Technical Consultation: +86-577-27869966, support@rockwill.com
Customization Response: ≤3 business days
Warranty: 2 years (core components included)
Resources: http://www.rockwill.cn
