The OVM AC/DC Overvoltage Monitoring Relay, developed by Borna Electronics, is designed to protect electrical equipment against excessive AC or DC voltage conditions. The relay continuously monitors the input voltage and activates its protective output whenever the measured voltage exceeds 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 OVM relay can be easily integrated into a broad range of industrial, automation, power distribution, and control applications. The trip delay can be adjusted using the front-panel DELAY control, allowing the user to eliminate nuisance trips caused by temporary voltage fluctuations.
The relay offers both automatic reset and latching operating modes, providing flexibility for different protection requirements
Features
- AC and DC overvoltage 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 20% to 120% 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 | 20% to 120% 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
- DC power systems
- Battery charger systems
- Industrial UPS systems
- Power distribution equipment
- Process automation systems
- Protection of sensitive electrical and electronic equipment
The OVM Overvoltage Monitoring Relay provides reliable protection against abnormal voltage rises, helping to prevent equipment damage, reduce downtime, and improve system reliability in both AC and DC applications.