Description
DEESYS DGF-D11F-C Digital Ground Fault Relay
Low-Voltage Insulation Monitoring & GFR Protection for Marine Systems
This high-quality DEESYS digital ground fault relay is in excellent used condition. It has been clean-inspected and fully bench-tested. All tactile push buttons (M, SET, TEST, RESET) respond instantly, and the back-lit LCD screen is completely functional. Terminal block screws on the rear of the device are pristine and ready to wire.
Product Overview
The DEESYS DGF-D11F-C is a high-reliability digital ground fault relay (GFR) specifically engineered to monitor insulation health and detect minute leakage currents in low-voltage electrical distribution networks. It is highly valued on marine vessels, cargo ships, and offshore platforms where salt, humidity, and vibration constantly threaten the integrity of cable insulation.
This digital protective device tracks real-time leakage values through an external zero-phase current transformer (ZCT). By executing micro-second evaluation of phase currents, the DGF-D11F-C delivers fast, reliable tripping signals to circuit breakers when fault thresholds are breached, preventing severe equipment damage, electrical fires, and safety hazards to shipboard personnel.
Technical Specifications
| Specification Parameter | Details |
|---|---|
| Brand / Manufacturer | DEESYS (South Korea) |
| Model Designation | DGF-D11F-C |
| Relay Class | Digital Ground Fault Relay (GFR) |
| Application Context | Low-Voltage AC Distribution Systems (Marine / Industrial) |
| Monitoring Method | Zero-Phase Current Transformer (ZCT) sensing |
| User Interface | Digital Back-lit LCD display with tactile setting buttons |
| Mounting Profile | Panel Flush Mount / Switchboard Integration |
Key Features
- High-Precision Leakage Tracking: Constantly samples insulation integrity to pick up minuscule ground leaks long before they scale into severe short circuits.
- Robust Digital Display Panel: Provides clear numerical monitoring readouts on active currents, ensuring easier marine survey checks and system auditing.
- Adjustable Delay & Trip Margins: Allows technicians to easily program current limits and trip-time delay configurations to prevent nuisance trips during transient motor starting.
- Marine-Grade Hardiness: Sealed vibration-resistant case keeps internal circuitry safe from humid, salty sea air.

