Basler Electric UFOV‑260A Underfrequency/Overvoltage Protective Module (30Vdc)

The Basler Electric UFOV‑260A is a protective module that combines underfrequency and overvoltage detection in a single unit, specifically designed for low‑voltage DC‑powered control systems. Operating on a nominal 30 VDC supply, this module provides reliable monitoring of AC system frequency and voltage, triggering alarm or trip signals when thresholds are exceeded.

This module is ideal for applications where a separate DC supply is available for protection logic, such as in battery‑backed control panels. Its compact size and low power consumption make it suitable for space‑constrained installations.

Key Features

• Combined underfrequency and overvoltage protection

• DC power input: 24–36 VDC (nominal 30 VDC)

• Adjustable frequency setpoint: 45–65 Hz

• Adjustable voltage setpoint: 80–140% of nominal

• Two independent relay outputs

• LED indication for power and trip status

Technical Specifications

Supply voltage: 24–36 VDC; burden: < 2 W; AC sensing input: 120/240 VAC; frequency accuracy: ±0.1 Hz; voltage accuracy: ±1%; output relays: 2 x SPDT, 2 A at 30 VDC; operating temperature: -20°C to +60°C.

Applications

Used in DC‑supplied generator control panels, remote telemetry units, and battery‑operated protection systems. The UFOV‑260A is particularly useful in sites where AC auxiliary power is unreliable.

Installation and Setup

Mount the module on a DIN rail or panel. Connect the DC power supply, the AC sensing leads, and the output relay wiring. Set the frequency and voltage trip points using the onboard potentiometers. A test button allows functional verification.

Reliability and Maintenance

The solid‑state design ensures high reliability with no moving parts. The module is protected against reverse polarity and transient overvoltage on the DC input. Periodic visual inspection and setpoint verification are recommended.

Why Choose the UFOV‑260A?

This module offers a dedicated solution for DC‑powered protection scenarios, maintaining the same performance standards as Basler’s larger relays. Its low power consumption and compact footprint make it an efficient choice for distributed protection schemes.

In summary, the Basler Electric UFOV‑260A is a versatile and reliable protective module, ensuring system safety under abnormal frequency and voltage conditions in DC‑powered environments.