Basler Electric BE1-32R – Reverse Power Relay (Configuration D1E A1P A0N1F)
The Basler Electric BE1-32R (model configuration D1E A1P A0N1F) is a solid‑state directional power relay designed to protect synchronous generators from reverse power flow. When a generator begins to motor—drawing power from the grid instead of supplying it—this relay initiates a trip signal, preventing prime mover damage and ensuring system stability.
Operating Principle
The relay continuously monitors the voltage and current of each phase, computing the real power direction. When the power reverses beyond an adjustable pickup threshold, the relay trips after a user‑selectable time delay. This configuration offers high accuracy and stability, with settings tailored to specific generator and turbine characteristics.
Voltage input: 120/240 V AC, 50/60 Hz
Current input: 5 A from CT secondary
Pickup setting: 0.5–20% of rated power, adjustable
Time delay: 0.1–10 seconds (definite or inverse)
Accuracy: ±2% of reading
Output contacts: 2 Form‑C relays, 5 A at 250 V AC
Power supply: 120/240 V AC or 125/250 V DC
LED indicators: power direction, alarm, and trip
Mounting: panel draw‑out case
Operating temperature: –20 °C to +65 °C
Applications
This relay is essential for generators operating in parallel with other sources, including utility grids and other generators. It is widely used in cogeneration, standby, and marine installations to safeguard turbines and diesel engines.
Installation and Testing
Mounting is via a standard panel cutout with front‑accessible controls. A test jack allows verification of calibration without field wiring. The relay includes a target indicator for trip indication.
Reliability and Compliance
Built with Basler's hybrid technology, the BE1-32R meets IEEE C37.90 and IEC 60255 standards, offering reliable operation in substation environments.
In summary, the Basler Electric BE1‑32R reverse power relay provides accurate, adjustable protection against generator motoring, safeguarding both electrical and mechanical assets.
