489-P5-HI-A20

The High Voltage Control Power Relay 489-P5-HI-A20 is a specialized relay designed for high-voltage control applications, particularly in power generation and distribution systems. Below are its key technical parameters:

1. Control Power Supply

• DC Range: 90–300 VDC
• AC Range: 70–265 VAC (48–62 Hz)
• This wide voltage and frequency range ensures compatibility with various power systems, enhancing flexibility in installation and operation.

2. Phase Current Input

• CT Secondary Rating: 5 A per phase
• The relay is designed to interface with 5 A secondary current transformers (CTs), which are standard in many power systems for current measurement and protection.

3. Display

• No Specific Display Type: The relay does not include an integrated display. Instead, it is typically configured and monitored via external devices or systems, such as a human-machine interface (HMI), SCADA system, or a dedicated protection relay management software. This design reduces complexity and cost while allowing for centralized monitoring.

4. Operating Frequency

• Frequency Range: 48–62 Hz
• The relay is suitable for both 50 Hz and 60 Hz power systems, making it versatile for global applications.

5. Key Features (Inferred from Model and Specifications)

• Protection Functions: Likely includes overcurrent, undercurrent, overvoltage, undervoltage, frequency protection, and possibly differential protection, depending on the configuration.
• Communication Capabilities: May support protocols like Modbus, DNP3, or IEC 61850 for integration with automation and control systems.
• Environmental Rating: Designed for industrial environments, with robust construction to withstand harsh conditions.
• Compliance Standards: Likely meets international standards such as IEC 61850, IEEE, and UL for safety and performance.

6. Applications

• Power Generation Plants: For generator protection and control.
• Substations: For protection of transformers, feeders, and buses.
• Industrial Facilities: For motor protection and power distribution systems.

7. Advantages

• Wide Power Supply Range: Enables use in diverse power systems without the need for additional power conditioning.
• High Reliability: Industrial-grade design ensures long-term stability and minimal maintenance.
• Scalability: Can be integrated into larger protection and control systems for comprehensive monitoring.

8. Potential Limitations

• No Local Display: Requires external monitoring, which may increase setup complexity for some users.
• Configuration Complexity: Advanced protection functions may require specialized knowledge for proper setup.

Conclusion

The 489-P5-HI-A20 is a robust, high-voltage control power relay suitable for critical power system applications. Its wide power supply range, compatibility with 5 A CT secondaries, and industrial-grade design make it a reliable choice for protection and control in power generation, transmission, and distribution systems.

For detailed configuration, calibration, or integration, it is recommended to consult the manufacturer’s documentation or a qualified protection engineer.