Basler Electric BE1‑32R Protective Relay

The Basler Electric BE1‑32R is a directional power relay that provides protection against reverse power and over‑power conditions in generators and feeders. It is designed to prevent generator motoring (loss of prime mover) and to detect loss‑of‑grid or system splitting events. The relay measures three‑phase voltage and current to compute real power and direction, tripping when power exceeds a set threshold in either direction.

With its microprocessor‑based architecture, the BE1‑32R offers high accuracy, programmable settings, and event logging. It is available with multiple communication options, making it suitable for modern digital substations.

Key Features

• Directional power detection (reverse and forward)

• Adjustable trip threshold: 0.1–100% of rated power

• Independent time delay: 0.1–10 s

• True RMS measurement for accuracy

• Two output relays with form‑C contacts

• Front‑panel LCD for local monitoring and settings

• RS‑232/RS‑485 communication (Modbus or DNP3)

Technical Specifications

Voltage inputs: 100–480 VAC; current inputs: 1A or 5A; frequency: 50/60 Hz; power accuracy: ±2%; trip delay: adjustable; operating temperature: -20°C to +70°C; power supply: 120/240 VAC or 125/250 VDC.

Applications

Commonly used in generator paralleling systems, co‑generation plants, and industrial power networks. The relay protects prime movers from reverse power damage and detects loss of utility grid for anti‑islanding.

Installation and Configuration

Mount the relay in a standard 19‑inch rack or panel. Connect voltage and current inputs from PTs and CTs. Configure trip thresholds, time delays, and communication parameters via the front panel or software. The relay includes self‑diagnostic features.

Reliability and Maintenance

The BE1‑32R is built with high‑quality components and conformal coating for harsh environments. It features transient protection and power‑supply filtering. Periodic testing using secondary injection is recommended to verify accuracy.

Why Choose the BE1‑32R?

This relay offers a perfect blend of analog simplicity and digital flexibility. Its proven track record and global support make it a preferred choice for protection engineers.

In summary, the Basler Electric BE1‑32R provides reliable directional power protection, safeguarding generators and feeders from abnormal power flow conditions.