Yongce Group Co., Ltd.
Complete Product Introduction
1. Product Brief Introduction
The ZW10-II 12G/630-20 High Voltage Dual Power Switching Device (hereinafter referred to as the device) consists of a high-voltage vacuum circuit breaker and an intelligent controller. It is applied in AC 50Hz power systems with a rated voltage of 12kV and a rated current up to 630A. In a dual power supply system, when one power source fails or is powered off, the device switches to the other power source to supply power, ensuring the continuity of power supply. Meanwhile, it has overcurrent and overloading protection interlocking functions, effectively avoiding unnecessary secondary impulse shocks caused by fault tripping. When the common power source fails and is powered off, the device can automatically switch between the common power source and the standby power source to ensure reliability and safety. It can also manually switch between two high-voltage power sources according to load requirements. It is especially suitable for important places where power outages are not allowed, and is an important electrical control device for ensuring continuous power supply. As a new-generation product with novel design, complete functions, high safety and automation level, and wide application range, the self-resetting dual power automatic switching device ensures the complete isolation of two high-voltage power sources in design, and adopts reliable mechanical and electrical interlocking at the same time, so it has extremely high safety and reliability. This product is suitable for dual power supply electrical products with high requirements for power supply reliability and safety, and is widely used in 10kV distribution lines in oil fields, mines, metallurgy, chemical industry, railways, communications, machinery and other fields.
2. Model Meaning & Explanation
The coding of the product model contains the core structural characteristics and parameter information of the high voltage dual power switching device. The specific meaning of each part of the model is as follows:
3. Product Characteristics
- Integrated design of vacuum circuit breaker and intelligent controller, compact structure and easy installation.
- Automatic switching between common and standby power sources, ensuring uninterrupted power supply for critical loads.
- Equipped with overcurrent and overload protection interlocking functions to avoid secondary impulse shocks from fault tripping.
- Complete mechanical and electrical interlocking design to ensure safe isolation of two high-voltage power sources.
- Both automatic and manual switching modes are available to meet different operation requirements.
- High safety and reliability, suitable for harsh working environments such as oil fields, mines and metallurgy.
4. Main Technical Parameters
| No. | Item | Unit | Data |
|---|---|---|---|
| 01 | Rated Voltage | kV | 12 |
| 02 | Maximum Operating Voltage | kV | 12 |
| 03 | Rated Current | A | 630 |
| 04 | Rated Short-Circuit Breaking Current | kA | 20 |
| 05 | Rated Short-Circuit Making Current (Peak) | kA | 50 |
| 06 | Rated Peak Withstand Current | kA | 50 |
| 07 | Rated Short-Time (1min) Withstand Current | kA | 20 |
| 08 | Rated Insulation Level | kV | 42 (Power Frequency Withstand Voltage - Dry Type) |
| 09 | 75 (Lightning Impulse Withstand Voltage - Peak) | ||
| 10 | Rated Operating Sequence | - | Open-0.3s-Close-100s-Close-Open |
| 11 | Mechanical Life | times | 10000 |
| 12 | Number of Rated Short-Circuit Breaking Operations | times | 30 |
| 13 | Rated Closing Voltage of Operating Mechanism | V | 220 |
| 14 | Rated Opening Voltage of Operating Mechanism | V | 220 |
| 15 | Contact Opening Distance | mm | 9±1 |
| 16 | Over Travel | mm | 3±0.5 |
| 17 | Three-Phase/Closing Asynchronism | ms | ≤2 |
| 18 | Contact Bounce Time | ms | ≤2 |
| 19 | Average Opening Speed | m/s | 1.0±0.2 |
| 20 | Average Closing Speed | m/s | 0.7±0.15 |
| 21 | Closing Time | s | 0.015-0.05 (Under Maximum Operating Voltage) |
| 0.03-0.06 (Under Minimum Operating Voltage) | |||
| 22 | Opening Time | s | 0.025-0.05 |
| 23 | Resistance of Each Main Circuit | μΩ | ≤180 |
| 24 | Allowable Cumulative Wear Thickness of Moving and Static Contacts | mm | 3 |
5. Appearance and Installation Dimensions
6. Ordering Notes
When placing an order for the ZW10-II 12G/630-20 high voltage dual power switching device, please provide the following information to ensure that the product meets the actual use requirements:
- Exact product model and specification (rated current, rated breaking current, etc.)
- Operating environmental conditions (such as altitude, ambient temperature, special working conditions)
- Special technical requirements (such as protection functions, control mode)
- Installation and wiring requirements (if any)
