Description
The
ABB SPAU140C is a highly advanced numerical synchro-check relay that plays a crucial role in power system operations. This
SPAU140C is designed to offer both synchro-check and voltage-check functions, which are essential for ensuring the proper connection of electrical systems. When it comes to the synchro-check function of the
SPAU140C, it allows for the connection of two separate networks or electrically interconnected network sections by verifying that the voltage magnitude, phase, and frequency differences on both sides of a circuit breaker are within the preset acceptable ranges. In the case of the voltage-check function of the
SPAU140C, it enables the connection of a disconnected bus or line to an energized section of a network. Only when the relevant conditions are met, the
SPAU140C will permit the circuit breaker to close, thus maintaining the stability and reliability of the power system.
| Parameter |
Details |
| Rated Voltage (Energizing Inputs) |
100V (for inputs: 13-14, 16-17, 19-20); 110V (for inputs: 13-15, 16-18, 19-21) |
| Continuous Voltage Withstand |
2.0 times of the rated voltage (Un) |
| Burden at Rated Voltage |
Less than 0.5 VA |
| Frequency Range |
50/60 Hz, with a permissible range of 45 – 65 Hz |
| Output Contacts Rated Voltage |
250V AC/DC |
| Output Contacts Continuous Current |
5A |
| Output Contacts 0.5s Make/Carry Current |
30A |
| Output Contacts 3.0s Make/Carry Current |
15A |
| DC Break Capacity (Output Contacts) |
l/r < 40ms at 48/110/220V DC: 5A/3A/1A |
| Signal Contacts Rated Voltage |
250V AC/DC |
| Signal Contacts Continuous Current |
5A |
| Signal Contacts 0.5s Make/Carry Current |
10A |
| Signal Contacts 3.0s Make/Carry Current |
8A |
| DC Break Capacity (Signal Contacts) |
l/r < 40ms at 48/110/220V DC: 1A/0.25A/0.15A |
- High Reliability: The ABB SPAU140C is equipped with comprehensive hardware and software self-checking functions. In the event of a fault, it will immediately trigger an alarm and lock all output signals, ensuring the safety and integrity of the power system. Its reliable performance means that under normal operating conditions, it requires minimal maintenance.
- Versatile Functionality: Each SPAU140C relay comes with two completely identical working units. Each unit has its own independent control and closing signals, as well as both synchro-check and voltage-check functions. This allows it to either check the closing conditions of two separate circuit breakers or be used for a single circuit breaker, providing great flexibility in various power system applications.
- Accurate and Precise: With its advanced numerical design, the SPAU140C can accurately detect and analyze voltage parameters, ensuring that the circuit breaker only closes when all conditions are perfectly met, thus preventing potential electrical hazards.
- Application Areas: The ABB SPAU140C is widely applicable in the power industry, especially in power generation plants, substations, and electrical distribution systems. It is also suitable for industrial settings where stable power supply and proper electrical connection are crucial, such as in large manufacturing plants, petrochemical facilities, and mining operations.
- Application Case: In a large-scale power generation plant, the SPAU140C was installed to monitor and control the connection between different power generation units and the main power grid. During the process of integrating new units into the grid, the SPAU140C accurately checked the voltage magnitude, phase, and frequency differences. Thanks to its reliable operation, the circuit breakers were safely closed at the right moment, ensuring a seamless connection and stable power supply to the grid.
Compared to some other similar products in the market, the ABB SPAU140C stands out with its dual-unit design, which provides more flexibility in application scenarios. Its highly accurate self-checking functions also reduce the risk of undetected faults, giving it an edge over many competitors. Additionally, the SPAU140C’s ability to handle a wide range of voltage and current parameters makes it more adaptable to different power system requirements, making it a more reliable choice for users.
- Compatibility: When selecting the SPAU140C, ensure that it is compatible with the existing electrical system in terms of voltage, current, and communication interfaces. Check the specifications of your power system to make sure that the SPAU140C can integrate smoothly.
- Installation Environment: Consider the environmental conditions where the SPAU140C will be installed. It should be installed in a location with proper ventilation and protection from dust, moisture, and extreme temperatures to ensure its optimal performance.
- Budget: While the ABB SPAU140C offers high-quality and reliable performance, it’s important to balance the cost with your budget. Evaluate the long-term benefits and cost savings that the SPAU140C can bring in terms of reduced maintenance and enhanced system stability when making a decision.
- Installation: During installation, follow the manufacturer’s instructions carefully. Ensure that all electrical connections are secure and properly insulated. Avoid any loose connections that could lead to electrical arcing or other hazards.
- Safety: When operating or maintaining the SPAU140C, always ensure that the power supply is turned off. Use appropriate personal protective equipment to prevent electrical shock.
- Maintenance: Regularly check the SPAU140C for any signs of damage or abnormal operation. Clean the device regularly to remove dust and debris. Follow the recommended maintenance schedule provided by ABB to ensure its long-term reliability.
Shanxi Xinyeda International Trade Co., Ltd. is your reliable partner. We provide ABB SPAU140C and other automation spare parts sales and technical support. Please visit our website
www.xydcontrol.com or contact us, and we will serve you wholeheartedly.
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