Description
The DEIF Multi-line GPU/2/GS is a microprocessor-based Generator Protection Unit designed for generator-set protection, monitoring, measurement, and control applications. The GPU-2 platform integrates three-phase electrical measurement circuits and an LCD display for operating values and alarms. Depending on the installed options and software configuration, the unit can provide generator protection, synchronization-related functions, voltage/reactive-power/power-factor control, alarm handling, outputs, and serial communication. DEIF documentation confirms that the Multi-line 2 GPU-2 platform supports a range of optional protection and control functions for medium- to large-size generator sets.

| Specification | Details |
|---|---|
| Brand | DEIF |
| Model | GPU/2/GS |
| Series | Multi-line 2 |
| Product Name | Generator Protection Unit |
| Product Type | Generator Protection & Control Unit |
| Main Application | Generator-set protection and monitoring |
| Measurement | 3-phase electrical measurement |
| Protection | Generator protection functions, configuration-dependent |
| Display | LCD display for measurements and alarms |
| Control Functions | Configuration-dependent generator control functions |
| Communication | Serial communication, option-dependent |
| Software | Multi-line 2 application software |
| Configuration | Option-based modular functionality |
| Application | Marine, industrial and power-generation systems |
| Condition | Used – according to supplied listing |
| Lifecycle | Phased out / End of Life |
| Replacement Note | Match hardware options, software version and configuration before replacement |
Recommended related DEIF models:
- DEIF GPU-2 – Generator Protection Unit
- DEIF GPU-2 Hydro – Generator Protection Unit for hydro applications
- DEIF GPC-2 – Generator Paralleling Controller
- DEIF PPU-2 – Generator Paralleling & Protection Unit
- DEIF PPU-3 – Paralleling & Protection Unit
- DEIF GPU-3 – Generator Protection Unit
- DEIF GPC-3 – Generator Paralleling Controller
- DEIF PPM-3 – Protection & Power Management Unit
- DEIF GPU 300 – Generator Protection Unit
- DEIF PPU 300 – Paralleling & Protection Unit
The exact functions of a GPU/2/GS depend on its installed options and software configuration. DEIF’s Multi-line 2 documentation identifies optional generator, busbar and mains protection, voltage/VAr/PF control, additional outputs, power-management functions, serial communication and additional operator-display options. DEIF’s software archive also specifically lists GPU-2 as supported by Multi-line 2 software versions 2.3x/2.4x.
For replacement, verify the complete GPU/2/GS configuration, hardware options, auxiliary supply, CT/VT inputs, relay outputs, communication interface, software version, and programmed protection settings. DEIF currently identifies GPU-2 as phased out and states that it has no direct replacement listed at present.
