Littelfuse VM800 3-Phase Voltage Monitoring Relay

Introduction

The Littelfuse VM800 3-Phase Voltage Monitoring Relay is a robust and reliable device designed to protect 3- and 4-wire motors operating within a voltage range of 145VAC to 500VAC. With its advanced monitoring capabilities and user-friendly interface, this relay is an essential component for ensuring the safety and efficiency of various electrical systems.

Part Description

The VM800 relay features an LCD screen with a green backlight, allowing for real-time monitoring and easy visibility of faults. It is capable of logging the last five faults, providing valuable data for troubleshooting and maintenance. This relay monitors critical parameters such as undervoltage, overvoltage, frequency drift, phase sequence, phase loss, and neutral failure. With configurable trip and restart delays, it offers flexibility for different applications. The relay supports both 3-phase and 4-wire configurations and is built to withstand a wide operating temperature range of -10°C to +60°C.

Applications

• Water and waste management systems
• Irrigation pumps
• Lift stations
• Cooling towers
• Automation panels
• Rooftop air conditioning units
• Supermarket refrigeration systems
• HVAC compressors
• Elevators and escalators
• Industrial machinery such as conveyors, CNC machines, and packaging lines

Industries

• Building systems
• Refrigeration and cooling
• Water and waste management
• Industrial automation
• HVAC (Heating, Ventilation, and Air Conditioning)

Usage Ideas

1. HVAC System Protection: Integrate the VM800 relay into an HVAC system to monitor and protect compressors from voltage fluctuations, ensuring reliable operation and preventing costly damage.

2. Industrial Automation: Use the relay in an industrial automation panel to monitor conveyor systems, providing alerts for phase loss or overvoltage conditions to enhance operational safety.

3. Irrigation Control: Implement the VM800 relay in an irrigation pump system to safeguard against undervoltage conditions, ensuring consistent water supply without risking pump burnout.

Conclusion

The Littelfuse VM800 3-Phase Voltage Monitoring Relay is a versatile and essential component for protecting motors and ensuring the smooth operation of various electrical systems across multiple industries. Its advanced monitoring features, user-friendly interface, and robust design make it an ideal choice for applications in building systems, refrigeration, and industrial machinery. By incorporating the VM800 relay, users can enhance the reliability and efficiency of their electrical systems while minimizing the risk of faults and failures.