Basler Electric BE1810/U‑2 Solid State Frequency Relay
The Basler Electric BE1810/U‑2 is a solid‑state frequency relay that provides underfrequency and overfrequency protection for generators, motors, and power systems. It is part of the BE1810 series, known for its high accuracy and fast response. This relay continuously monitors the system frequency and trips when the measured frequency deviates from the setpoint by a predetermined margin.
With a fully digital measuring circuit, the BE1810/U‑2 offers excellent stability over temperature and time. It features adjustable pickup and dropout settings, as well as independent time delay adjustments for each frequency element. The relay is housed in a rugged enclosure suitable for switchgear and control panel installations.
Key Features
Underfrequency and overfrequency detection
Adjustable frequency setpoint: 40–70 Hz
Independent time delays (0.1–10 s)
High accuracy: ±0.02 Hz
Two output relays with form‑C contacts
LED indicators for status and trip
Technical Specifications
Nominal input: 120/240 VAC, 50/60 Hz; burden: < 5 VA; frequency range: 40–70 Hz; reset ratio: 0.02 Hz typical; output contacts: 5 A at 250 VAC; operating temperature: -20°C to +65°C.
Applications
Used in load shedding schemes, generator protection (anti‑islanding), motor thermal protection, and underfrequency load relief. The BE1810/U‑2 is also employed in synchronization and power quality monitoring applications.
Installation and Adjustment
Mount the relay on a panel or DIN rail. Connect the voltage sensing leads to the system bus. Set the desired frequency trip point and time delay using the front‑panel knobs and switches. The relay provides a test input for periodic functional checks.
Reliability and Maintenance
The solid‑state design eliminates mechanical wear, ensuring long service life. The relay is immune to vibration and shock, making it suitable for mobile and marine installations. Routine inspection of connections is sufficient; no recalibration is typically required.
Why Choose the BE1810/U‑2?
This frequency relay offers precise and dependable protection at a competitive price. Its flexible settings and robust construction make it a preferred choice for both OEMs and end‑users. Basler Electric’s global support and extensive documentation ensure easy integration and operation.
Overall, the Basler Electric BE1810/U‑2 is a reliable solution for safeguarding equipment against frequency abnormalities, ensuring stable and safe power system operation.
