The UVM AC/DC Undervoltage Monitoring Relay, developed by Borna Electronics, is designed to protect electrical equipment and systems against low-voltage conditions in both AC and DC applications. The relay continuously monitors the input voltage and activates its protective output whenever the measured voltage falls below the user-defined threshold.
Featuring a wide voltage detection range from 0 to 600 V AC/DC and a separate universal power supply input, the UVM relay can be easily integrated into a wide variety of industrial automation, power distribution, UPS, battery charger, and control systems. The trip delay can be adjusted using the front-panel DELAY control to prevent unnecessary tripping caused by temporary voltage dips.
The relay supports both automatic reset and latching operating modes, providing flexible protection for different operational requirements.
Features
- AC and DC undervoltage detection
- Wide voltage measurement range from 0 to 600 V AC/DC
- Separate universal power supply input from 24 to 380 V AC/DC
- Adjustable voltage threshold from 5% to 100% of the nominal voltage
- Adjustable trip delay from 0.15 to 10 seconds
- Selectable automatic reset and latching operating modes
- Two LED indicators: PWR (Power Supply Status) and FAULT (Fault Indication)
Technical Specifications
| Parameter | Specification |
| Supply Voltage | 220 VAC ±15% (other voltages available upon request) |
| Network Frequency | 50 Hz ±5% |
| Internal Power Consumption | Approx. 2 W |
| Adjustable Voltage Range | 5% to 100% of nominal voltage |
| Protection Degree | IP20 according to IEC 60529 |
| Operating Temperature | -20°C to +60°C |
| Relative Humidity | 15% to 85% |
| Mounting Method | DIN Rail according to IEC 60715 |
| Output Relay | One C/O (SPDT) contact, 6 A |
Applications
- Industrial control panels
- Battery charger systems
- Industrial UPS systems
- DC power systems
- Power distribution equipment
- Process automation systems
- Protection of sensitive electrical and electronic equipment against low-voltage conditions
The UVM Undervoltage Monitoring Relay provides dependable protection against voltage drops and undervoltage conditions, helping to prevent equipment malfunction, operational interruptions, and costly downtime in both AC and DC systems.