Description
LS Electric DPR-1000 FZ Digital Protection Relay
High-Performance Microprocessor Protection & Measurement Unit
This unit is in excellent used working condition. It was carefully decommissioned from an active control panel and has been fully tested for basic startup and communication function. The display is sharp, backlighting is fully operational, and the front-panel membrane keypad buttons register input reliably.
Tested working LS DPR-1000 FZ interface showing menu navigation screen.
Product Overview
The LS Electric DPR-1000 FZ is a premier digital protection relay designed for modern power distribution networks and critical industrial electrical infrastructures. This multi-functional unit integrates protective relaying, precise metering, control, and sequence-of-events recording into a single, compact panel-mount assembly.
With advanced digital signal processing (DSP) engines and robust communication modules, this relay tracks system variables in real-time, executing trip commands to shield high-value grid components from faults, overcurrent conditions, and phase imbalances.
Firmware & Device Details
| Specification Parameter | Details |
|---|---|
| Manufacturer | LS Electric / LSIS (South Korea) |
| Model Name | DPR-1000 FZ |
| DSP Firmware Version | Ver 06.04 / 07.24 |
| COM Module Version | Ver 01.10 / 07.14 |
| Display Layout | Backlit Graphic LCD Screen with Real-Time Event Feed |
| LED Indicators | Power/Run, Comm, Pick-Up/Trip, Diag/Err, Remote/Local status lights |
| Function Keys | Tactile navigation pad, ESC, ENT, RST, Local/Remote toggle |
Key Features
- Reliable Microprocessor Control: Dual DSP core structure provides ultra-fast fault checking, ensuring millisecond-level reaction times.
- Versatile Protection Suite: Fully handles Overcurrent (OCR), Overcurrent Ground (OCGR), Thermal Overload (THR), and Undercurrent (UCR) protection schedules.
- Robust Communication Framework: Built-in support for industrial protocols makes system integration with SCADA or local HMI monitors seamless.
- Event Recording & Diagnostics: Automatically logs faults and operational trips locally, helping engineers quickly identify root causes during distribution glitches.

