Basler UFOV 260A Overvoltage Protective Module

The Basler UFOV 260A is a solid‑state overvoltage protective module designed to safeguard sensitive control circuits from damaging voltage excursions. This module provides adjustable overvoltage detection with a time‑delay output, ensuring reliable protection for generator control, excitation, and auxiliary systems. It is a compact and reliable solution for overvoltage protection in industrial and utility applications.

Key Features

The module features an adjustable overvoltage pickup setpoint and independent time delay. It includes high‑accuracy voltage sensing with minimal drift over temperature. The unit provides a normally open output contact for tripping or alarming. Front‑panel LEDs indicate power and trip conditions. The module is housed in a compact, rugged enclosure suitable for panel mounting.

Technical Specifications

Power supply: 120 or 240 VAC, 50/60 Hz. Overvoltage pickup range: adjustable from 110% to 140% of nominal. Time delay: 0.1‑10 seconds (adjustable). Trip accuracy: ±1% of setpoint. Output contact rating: 5 A at 250 VAC resistive. Operating temperature: -20°C to +55°C. Connections: screw terminals for secure wiring.

Operating Principles

The module continuously monitors the input voltage. When the voltage exceeds the pickup setpoint, the timing circuit initiates. If the overvoltage persists for the set time delay, the output relay energizes, sending a trip or alarm signal. The hysteresis prevents nuisance tripping during momentary fluctuations.

Applications

This module is used in generator control panels, excitation systems, and auxiliary control circuits requiring overvoltage protection. It is ideal for applications where space is limited and reliable protection is required.

Installation and Configuration

Mount the module on a panel using the provided hardware. Connect the power supply and output circuits. Adjust the overvoltage pickup setpoint and time delay using the front‑panel controls. A calibration check with a variable voltage source is recommended.

Maintenance and Reliability

Solid‑state design ensures high reliability with minimal maintenance. Periodic testing verifies trip accuracy. Routine inspection of connections is sufficient.

Conclusion

The Basler UFOV 260A overvoltage protective module provides reliable and adjustable protection for control circuits, ensuring safe operation of sensitive equipment.