DEIF PPU-3 Paralleling & Protection Unit Generator Controller

Product Description

The DEIF PPU-3 is a marine-grade digital generator paralleling and protection controller from DEIF Multi-Line 2 series. It integrates automatic synchronization, load sharing, generator protection and M-Logic micro PLC function, designed for synchronous and asynchronous gensets. It adopts galvanically isolated three-phase measurement circuit, widely used for shipboard power management system, can work in standalone or parallel genset mode. Optional engine interface card provides independent backup shutdown function for engine safety supervision. Configuration software is USW-3.

• Part Number: PPU-3, Brand: DEIF (Denmark)
• Regulation modes: Fixed frequency, fixed power (base load), frequency droop, load sharing
• Protection list: Overcurrent, short circuit, reverse power, over/under voltage, over/under frequency, voltage unbalance, earth fault, loss of excitation
• I/O: 12 configurable digital inputs, 6 relay outputs, 2 analog outputs for governor & AVR control
• Measurement: Directly up to 690V AC; CT secondary 1A / 5A; frequency 40–70Hz
• Power supply: 24 VDC (18–32 VDC)
• Communication: CAN bus, serial port, supports PLC, SCADA connection
• Display: Separate LCD panel, 3m cable included; max 2 remote AOP panels within 200m
• Optional: Engine interface card with independent CPU & power supply, backup trip function
• Certifications: DNV, LR, BV, ABS, all major marine classification society certificates
• Operating temperature: -25 ℃ ~ +70 ℃
• Manufacturer Status: Mature mainstream marine generator controller, new stock, surplus and fully tested refurbished available
• Typical gross weight: approx 1.4 kg, origin: Denmark

Applications

• Marine vessel main generator and auxiliary genset parallel control & protection
• Offshore platform, rig power management system
• Island mode multi-generator load sharing, base load operation
• Land-based industrial standby generator, containerized power station
• DEIF PMS system upgrade, spare replacement and retrofit of old synchronizer

FAQ

Q: What is the difference between PPU-3 and PPM-3?
A: PPU-3 focuses on paralleling + generator protection; PPM-3 is full power management master controller for whole bus coordination, load shedding logic.

Q: Can PPU-3 start and stop engine?
A: Standard PPU-3 only handles synchronizing and protection. It needs the optional engine interface card to realize engine start/stop and backup shutdown.

Q: What software is used for parameter setting?
A: USW-3 (Multi-Line 2 Utility Software), supports offline simulation, M-Logic programming, event log reading.