315A 7.2 KV Vacuum Contactor Motor Protection High Voltage Contactor With 300,000 Mechanical Life
Price:
$1500
MOQ:
1 piece
Delivery Time:
15 days
Brand:
MacweyTEK
Product Description
7.2kV MKVC Vacuum Contactor for High Voltage Motor Protection with 300,000 Mechanical Life
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Product Overview
The MKVC vacuum contactor represents a new-generation medium-voltage vacuum switch element series developed using advanced domestic and international technology. Engineered with identical dimensions to A-B-B's VC contactor, this product enables installation in minimum 650mm mid-mounted switchgear configurations.
Applications
The MKVC vacuum contactor operates in conjunction with high-voltage fuses capable of breaking wide-range short-circuit fault currents. Designed for AC systems with voltages of 3.6~12kV and frequencies of 50Hz/60Hz requiring extensive opening and closing operation cycles, it is particularly suitable for frequent switching applications.
- Protection and control of high-voltage motors, transformers, and capacitor banks
- Induction furnace control systems
- Industrial applications in thermal power plants, metallurgy, petrochemicals, and mining plants
- Marine and shipping industry electrical systems
Configuration Options
The GPVC vacuum contactor offers three distinct holding configurations to meet various operational requirements:
- Electrical holding mechanism
- Mechanical self-holding system
- Permanent magnet holding technology
Control electromagnets facilitate closing operations through the operating mechanism, while opening operations are achieved via reliable opening springs.
Technical Specifications
MKVC vacuum contactors are available in two voltage grades with corresponding fuse compatibility:
- MKVC 7 - Rated voltage 3.6~7.2kV, current range 6A to 315A
- MKVC 12 - Rated voltage 12kV, current range 6A to 160A
| Item | Unit | 3.6kV | 7.2kV | 12kV |
|---|---|---|---|---|
| Rated voltage | kV | 3.6 | 7.2 | 12 |
| 1min Power frequency withstand voltage | kV | 20 | 32 | 42 |
| Lighting impulse withstand voltage | kV | 46 | 60 | 75 |
| Rated current | A | 400 | 315 | 200 |
| Rated short-time withstand current (4s) | kA | 4 | ||
| Rated peak withstand current | kA | 10 | ||
| Expected short-circuit breaking current | kA | 50 | ||
| Expected short-circuit close current | kA | 130 | ||
| Main circuit resistance | uΩ | ≤250+RFuse | ||
| Max. transfer current | A | 4000 | 4000 | 3200 |
| Rated current breaking times | times | 250,000 | ||
| Mechanical life (Mechanical hole-type) | times | 300,000 | ||
| Mechanical life (Electrical hold-type) | times | 500,000 | ||
| Main circuit resistance | uΩ | ≤150 | ||
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Company
Ningbo Macwey Industrial Technology Co.,Ltd
Location
No.218, Weier Road, Chongshou Industrial Park, Cixi City (Ningbo), China
Contact Person
Alec Sung