12kV High-Voltage VCB Isolation Handcart & Fuse Handcart for PT Cabinets – Compatible with 650mm Wide Centre Cabinets
The 12kV High-voltage VCB Isolation Handcart is a precision-engineered withdrawable unit designed for central switchgear systems. It serves as the primary mobile platform for high-voltage components, allowing for seamless maintenance or replacement. Specifically, the Fuse Handcart variant integrates high-capacity fuses to provide essential short-circuit protection in PT (Potential Transformer) cabinets. Featuring a composite insulation structure (air, insulation covers, and contact arm bushings) and a secure electromagnetic locking mechanism, it ensures safe operation and reliable position monitoring for medium-voltage distribution networks.
Product Overview
The VSG-40.5 series is a high-performance indoor vacuum circuit breaker featuring advanced embedded pole technology. It is specifically designed for three-phase AC 50Hz systems with a rated voltage of 40.5kV. This robust VCB serves as an ideal control and protection unit for power plants, substations, and industrial mining enterprises, especially suitable for locations requiring frequent operations.
Technical Features
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Versatile Installation: Supports both fixed type and withdrawable type (installed on a trolley) within switch cabinets.
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Superior Insulation: Embedded poles provide enhanced environmental resistance and reliability.
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Reliable Performance: Engineered for long-term service in high-voltage transmission and distribution systems.
Technical Parameters
| Item | Unit | Data |
| Rated Voltage | kV | 40.5 |
| 1min Power Frequency Withstand Voltage | kV | 95 |
| Lightning Impulse Withstand Voltage | kV | 185 |
| Rated Current | A | 630 / 1250 / 1600 / 2000 / 2500 |
| Rated Short-circuit Breaking Current | kA | 20 / 25 / 31.5 |
| Mechanical Life | Times | 10,000 |
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