The Basler Electric BE3-27T/59T-3A1N3, Part No. 9319700103, is a combined overvoltage and undervoltage monitoring relay with adjustable time delay. It is designed to monitor AC voltage and provide protective relay operation when the voltage rises above or falls below user-adjustable limits.
Key Features
- Combined overvoltage and undervoltage protection
- Adjustable undervoltage threshold from 75–100%
- Adjustable overvoltage threshold from 100–125%
- Independent UNDER SET and OVER SET controls
- Independent under/over time-delay adjustments
- Adjustable delay up to 10 seconds
- Helps prevent false trips caused by brief voltage fluctuations
- Self-powered operation
- DPDT relay output
- Red LED for relay status indication
- Green LED for power-supply condition
- DIN-rail mounting
- Solid-state design with no routine internal maintenance
- Suitable for both power-system monitoring and equipment protection
Typical Applications
- Marine generator protection systems
- Shipboard main switchboards
- Emergency switchboards
- Generator control panels
- Three-phase AC power monitoring
- Generator voltage supervision
- Utility/mains failure monitoring
- Diesel generator installations
- Industrial power-distribution systems
- Protection of voltage-sensitive electrical equipment
- Power-supply regulation and supervision
