Description

DEIF LSU-112DG Generator Load Sharing & Frequency Control Unit

Technical Specifications

• Product Model: LSU-112DG
• Brand: DEIF
• Warranty: One Year
• Input Voltage: 24 VDC control power supply
• Operating Temperature: -20°C to +60°C
• Storage Temperature: -40°C to +85°C
• Response Time: Minimum ON delay adjustable 25ms – 500ms
• Protection Class: IP20 (DIN rail enclosed cabinet installation)
• Accuracy Class: ±0.1Hz frequency deadband, ±2% power deadband
• Output Frequency: Measurable frequency range 45Hz – 65Hz
• Rated Current Range: Secondary CT rated 5A generator current input
• Communication Interface: Analog governor potentiometer output, dry relay contact outputs
• Supported Protocols: Analog 0-5V governor signal, hardwired discrete relay logic
• Overload Capacity: 200% short-term CT input overload with internal fuse protection
• Dimensions: 110mm (L) × 75mm (W) × 120mm (H)
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Product Overview

The LSU-112DG is a dedicated load sharing and frequency control module engineered by DEIF for diesel and gas generator set parallel power systems. This compact DIN-rail mounted controller executes closed-loop frequency regulation and balanced active power distribution when multiple generator units operate in parallel with each other or the mains grid. It integrates built-in voltage and current transducers to collect real-time generator operational data, then outputs analog adjustment signals to engine speed governors for precise load equalization.

It addresses critical stability risks in distributed power generation systems, including uneven load distribution across paralleled gensets, grid frequency drift under fluctuating load demand, failure to unload generators safely during disconnection, and inconsistent governor response across different prime movers. Equipped with configurable jumper parameters, LED status indicators, and EMC interference suppression circuits, the unit maintains stable control performance under vibration, temperature cycling, and electrical noise typical in engine rooms and marine power compartments.

Power plant automation technicians, marine electrical engineers, genset system integrators, and backup power facility maintenance teams derive measurable operational value from this spare control module. It enables direct drop-in replacement for faulty load sharing units without rewriting parallel system logic, supports isochronous and constant power operating modes, reduces mechanical wear on generator engines caused by unbalanced loading, and shortens commissioning and troubleshooting time for multi-generator parallel power plants