Beckwith Electric P‑1939 Generator Protection Annunciator Panel (B‑0898 Rev A‑2)
The Beckwith Electric P‑1939 is an annunciator panel designed to interface with generator protection relays, providing clear visual and audible alarms for fault conditions. The panel includes multiple alarm windows, each labelled for specific protection elements (e.g., overcurrent, differential, overvoltage), and features a flashing LED and audible horn for immediate alerting. The B‑0898 Revision A‑2 indicates a specific hardware and firmware configuration.
This annunciator is commonly used in control rooms of power plants and industrial facilities to enhance operator awareness and response to generator faults. Its modular design allows easy addition of alarm points and integration with existing relay outputs.
Key Features
Up to 24 alarm windows (configurable)
Audible horn with silence pushbutton
Lamp test and reset functions
Flashing and steady alarm modes
Flush‑mount panel enclosure
Accepts dry contact inputs from relays
Operating voltage: 120/240 VAC or 125 VDC
Technical Specifications
Supply voltage: 120/240 VAC, 50/60 Hz or 125 VDC; power consumption: < 20 W; input contacts: normally open, 24 VDC wetting voltage; lamp type: LED; horn: 85 dBA; operating temperature: 0°C to +50°C; dimensions: 19″ rack mount or custom.
Applications
Used in generator control rooms, substation control panels, and industrial alarm systems. It provides centralized annunciation for protective relay trips, making it easier for operators to identify and respond to faults.
Installation and Wiring
Mount the panel in a standard rack or cutout. Connect the DC power supply and wire each alarm input from the relay contacts. Configure the alarm labeling and mode settings according to the system requirements.
Reliability and Maintenance
The panel uses solid‑state circuitry and LED lamps for long life. Regular testing of lamps and horn is recommended to ensure functionality.
Why Choose the P‑1939?
This annunciator panel provides a professional and reliable means of alarm indication, complementing Beckwith Electric’s protection relays. Its clear layout and robust construction make it a valuable addition to any generator protection scheme.
In summary, the Beckwith Electric P‑1939 enhances operator awareness and facilitates rapid fault response in generator protection systems.
