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
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