Claire
Mr.Fu
Claire
Compact VSY2-12GD High Voltage Vacuum Circuit Breaker - China Suppliers & Factory for 12kV Power Distribution
Main Features
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Adopts vacuum arc-extinguishing composite insulation structure, featuring high insulation level and excellent electrical performance.
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Integrates disconnector, load switch and earthing switch in one unit, featuring compact structure, small size and light weight.
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Flexible installation methods, with optional operation modes: manual, motorized, and manual closing & electrical opening.
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Adopts rotary disconnector with visible break after opening.
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The load switch equipped with fuses has short-circuit protection function and can replace conventional circuit breakers.
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Mechanical interlocks are set between the disconnector, load switch and earthing switch to meet the "five-prevention" requirements of switchgear.
Technical Parameters
| No. | Name | Unit | Load Switch | Combined Electrical Apparatus |
|---|---|---|---|---|
| 1 | Rated Frequency | Hz | 50 | 50 |
| 2 | Rated Voltage | kV | 12 | 12 |
| 3 | 1min Power Frequency Withstand Voltage | kV | 42kV between phases, to ground and at vacuum break / 48kV at isolation break | Same as left |
| 4 | Rated Lightning Impulse Withstand Voltage (Peak) | kV | 75kV between phases, to ground and at vacuum break / 85kV at isolation break | Same as left |
| 5 | Rated Current | A | 630 | Maximum rated current of fuse: 125, 200 |
| 6 | Rated Short-circuit Breaking Current | kA | - | 31.5 |
| 7 | Rated Active Load Breaking Current | A | 630 | - |
| 8 | Rated No-load Transformer Breaking Current | - | 63 | - |
| 9 | Rated Closed-loop Breaking Current | A | 630 | - |
| 10 | Rated Short-time Withstand Current (4s) | kA | 25 | - |
| 11 | Rated Peak Withstand Current | kA | 63 | - |
| 12 | Rated Short-circuit Making Current (Peak) | kA | 50 | 50 |
| 13 | Rated Transfer (Make) Current | A | 1700 (3150) | Same as left |
| 14 | Mechanical Endurance | Times | 10000 | Same as left |
Product Display
Outline and Installation Dimension
Outline Dimension Drawing of VSY2-12GD Front Mounting & Right Operation
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Frequently Asked Questions
Q1
What is the rated voltage of the VSY2-12GD vacuum load switch?
The VSY2-12GD has a rated voltage of 12 kV, making it suitable for medium-voltage distribution systems operating at this voltage level. Both the load switch and combined electrical apparatus versions share the same rated voltage specification.
Q2
What are the available operation modes for the VSY2-12GD?
The VSY2-12GD supports three flexible operation modes: manual operation, motorized operation, and a combined mode featuring manual closing with electrical opening. This flexibility makes it adaptable to a wide range of installation environments and automation requirements.
Q3
Does the VSY2-12GD meet "five-prevention" switchgear requirements?
Yes. Mechanical interlocks are implemented between the disconnector, load switch, and earthing switch to fully comply with the "five-prevention" safety requirements of switchgear, preventing misoperation and ensuring safe switching sequences.
Q4
Can the VSY2-12GD replace conventional circuit breakers?
Yes. When the load switch is equipped with fuses, the VSY2-12GD gains short-circuit protection functionality. The combined electrical apparatus version has a rated short-circuit breaking current of 31.5 kA, enabling it to replace conventional circuit breakers in many distribution applications.
Q5
What is the mechanical endurance life of the VSY2-12GD?
The VSY2-12GD is rated for 10,000 mechanical operations, ensuring a long service life with reliable performance. This applies to both the load switch and combined electrical apparatus configurations.
Q6
What insulation withstand voltages does the VSY2-12GD support?
The VSY2-12GD provides robust insulation performance. It withstands 42 kV (1-minute power frequency) between phases, to ground, and at the vacuum break, and 48 kV at the isolation break. For lightning impulse, it withstands 75 kV between phases and at the vacuum break, and 85 kV at the isolation break.