Basler BE1‑32R Power Relay

The Basler BE1‑32R is a solid‑state protective relay that combines reverse power and directional overcurrent protection functions. This model, with order code B2E E1P A0N1F, is specifically designed for generator protection, preventing motoring conditions and detecting fault current direction in utility and industrial power systems. It ensures the integrity of prime movers and grid interconnection.

Key Features

The relay features adjustable reverse power trip level and time delay. The directional overcurrent element provides selective fault detection based on power flow direction. It includes a target indicator, test points, and LED status lights. The unit is housed in a compact draw‑out case.

Technical Specifications

Input voltage: 120 or 240 VAC, 50/60 Hz. Current input: 5 A or 1 A CT secondary. Reverse power pickup: 0.5‑20% of rated power. Time delay: 0.1‑10 seconds. Directional overcurrent pickup: 0.5‑20 A. Operating temperature: -20°C to +55°C. Output contacts: 2 form‑C rated at 5 A at 250 VAC.

Operating Principles

The relay measures both voltage and current to determine real power direction. Under normal forward power flow, the relay remains inactive. If power reverses, the reverse power element initiates timing and trips after the delay. The directional overcurrent element uses voltage reference to determine fault direction.

Applications

Used in generator sets to prevent motoring and in utility interconnections to detect reverse power. Directional overcurrent function is valuable for looped distribution networks.

Installation and Configuration

Mount in a standard panel. Connect voltage and current inputs. Set reverse power pickup, time delay, and directional overcurrent settings. A secondary injection test is recommended.

Maintenance and Reliability

Periodic testing and calibration ensure accuracy. Solid‑state design provides high reliability.

Conclusion

The Basler BE1‑32R power relay offers dual functionality for generator and interconnection protection, making it an essential component for power systems.