DEIF PPU-3

Product Name:​ DEIF PPU-3 (Power Plant Unit – GenSet Paralleling & Protection Unit) — Advanced Genset Controller
Product Introduction:
A marine- and industrial-grade genset controller for automatic start/stop, synchronization, load sharing, and protection of diesel/gas generator sets. Can operate standalone or as part of a DEIF power management system (PMS) for multi-genset or mains/genset transition schemes.
Category:
Description
Key Technical Specifications:
  • Aux. Supply Voltage:​ 24 V DC nominal (or 110/230 V AC optional)
  • Generator Voltage Input:​ 50–600 V AC L-L, 3-phase, 45–65 Hz
  • CT Input:​ 1 A or 5 A secondary (configurable ratio)
  • Measurement Accuracy:​ Voltage/Current ±0.5% FS; Frequency ±0.01 Hz
  • Protection Functions (ANSI codes):​ 50/51 Overcurrent, 27 UV, 59 OV, 81 O/U Frequency, 32 Reverse Power, 46 Negative Sequence, etc.
  • Communication:​ RS-485 (Modbus RTU), CANopen, optional Ethernet
  • Programmable Logic:​ M-Logic built-in for custom sequencing
  • Operating Temp:​ -25 °C to +70 °C
  • Protection Class:​ IP20 front (panel mount), IP40 with option
  • Class Approval:​ DNV, ABS, LR, BV, CCS
Functional Features:
  • Automatic synchronizing with adjustable deadband for voltage/frequency/phase
  • Droop & isochronous load sharing
  • Built-in event & trend logging; graphical LCD (local display optional)
  • Dead bus / live bus pickup; priority load shedding
Application Scenarios:
Marine main/emergency switchboards, offshore platform power systems, hospital/data-center standby diesel generators, island microgrids.
Installation Notes:
  • CT polarity must be observed; reverse polarity causes incorrect kW/kVAR readings
  • Configure protection settings per generator nameplate and utility requirements before closing to bus
  • Use screened twisted-pair for CT/VT wiring; separate from power cables
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