40.5kV Composite Apparatus for Wind & Solar Power Systems
40.5kV Composite Apparatus for Wind & Solar Power Systems is an integrated indoor high-voltage switching solution designed for renewable energy substations and collection systems. It combines a vacuum circuit breaker, three-position disconnector, and current transformer (CT) in a compact pre-assembled structure, providing reliable switching, protection, and measurement while reducing installation space and commissioning work.
With its compact design and factory-integrated components, the composite apparatus is well suited for wind farms, solar power stations, and other clean energy projects where space, reliability, and maintenance efficiency are critical.
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The 40.5kV Composite Apparatus is an integrated indoor high-voltage switching solution designed for renewable energy applications such as wind farms and solar substations. It combines a vacuum circuit breaker, disconnector, and current transformer (CT) into a compact, pre-assembled unit, providing reliable switching and protection while reducing installation space and commissioning requirements.
Designed for power systems where equipment reliability and uptime are critical, the composite apparatus offers a streamlined alternative to conventional separate switchgear components. Its integrated structure simplifies system configuration, reduces installation work, and supports efficient operation in space-constrained substations.
With vacuum interruption technology and coordinated switching and measurement functions, the 40.5kV Composite Apparatus is suitable for modern renewable energy collection systems and other medium-voltage power distribution applications requiring compact design, reliable protection, and convenient maintenance.
What Is a Composite Apparatus?
A composite apparatus integrates multiple high-voltage switching and measurement components into a single compact, factory-assembled structure. In the 40.5kV Composite Apparatus, key components are pre-aligned and tested to simplify installation, improve system reliability, and reduce commissioning requirements.
- Integrated Vacuum Circuit Breaker (VCB)
Provides reliable switching and vacuum arc interruption for load and fault currents. - Three-Position Disconnector
Provides switching positions for reliable circuit isolation and safe maintenance. - Integrated Current Transformer (CT)
Supports current measurement and protection functions within the same compact assembly. - Mechanical Interlocking Drive
Coordinates the operating mechanisms to help prevent incorrect switching sequences and improve operational safety. - Epoxy-Insulated Composite Housing
Provides electrical insulation and mechanical protection while maintaining a compact overall structure.
By integrating these components into one pre-assembled unit, the composite design reduces field wiring and mechanical alignment work, minimizes installation errors, and shortens commissioning time compared with separately installed switchgear components.
Technical Data
| Item | Unit | Parameter | |
| Rated voltage | kV | 40.5 | |
| Rated current | kA | 100 – 630 | |
| Rated frequency | Hz | 50 | |
| Rated short-circuit breaking | kA | 25 | |
| Withstand voltage (1 min) | kV | 95 | |
| Impulse withstand voltage | 185 | ||
| Mechanical life | Times | ≥10000 | |
