Description
The DEIF PPU-3 920020314.20 is a Paralleling & Protection Unit designed for PLC-based power management systems, generator control, synchronization, and electrical protection. The PPU-3 combines generator protection and synchronizing functions with regulation modes such as load sharing, fixed power, and fixed frequency. It provides three-phase measurement circuits and an LCD display for operating values and alarms. Serial communication allows integration with PLC and SCADA systems, while optional engine-interface hardware can add engine start/stop and protection functions. DEIF also documents the PPU-3 for marine and industrial genset applications.

PPU-3
| Specification | Details |
|---|---|
| Brand | DEIF |
| Model | PPU-3 |
| Part Number | 920020314.20 |
| Product Name | Paralleling & Protection Unit |
| Product Type | Generator Control & Protection Controller |
| Main Application | Power management, generator control and protection |
| Synchronization | Generator synchronization and paralleling |
| Regulation Modes | Load sharing, fixed power, fixed frequency |
| Measurement | Three-phase electrical measurement |
| Display | LCD display for values and alarms |
| Communication | Serial communication for PLC / SCADA integration |
| Logic | Programmable logic / M-Logic supported |
| Optional Function | Engine start/stop and engine protection via engine interface card |
| Application Areas | Marine, offshore, industrial and generator-set systems |
| Condition | Used – according to supplied listing |
| Status | Legacy / established PPU-3 platform |
Recommended related DEIF models:
- DEIF PPU-3 – Paralleling & Protection Unit
- DEIF GPU-3 – Generator Protection Unit
- DEIF GPU-3 Gas – Generator Protection Unit
- DEIF PPM-3 – Protection & Power Management Unit
- DEIF PPU 300 – Paralleling & Protection Unit
- DEIF GPU 300 – Generator Protection Unit
- DEIF PPM 300 – Protection & Power Management Controller
- DEIF PPM-3 – Power Management System
- DEIF MVR-200 – Protection Relay Series
- DEIF iE 250 – Generator / Power Management Controller
For replacement, verify the complete 920020314.20 part number, hardware options, auxiliary supply, I/O configuration, communication interfaces, software/parameter settings, and application configuration. DEIF provides dedicated PPU-3 documentation covering data sheets, installation, application notes, parameter lists, options, and drawings.
