DEIF LSU‑113DG Load Sharing Unit With Reverse‑Power Protection

Technical Specifications

Model:LSU‑113DG

Brand:DEIF

System compatibility:Uni‑line series active load‑sharing unit for multi‑generator parallel power station. Cooperates with EPQ96‑2 / EPN‑110DN electronic potentiometer to drive governor. Matches synchroniser FAS‑113DG / HAS‑111DG to complete full parallel solution. Compared with LSU‑112DG,it adds reverse‑power protection and low‑power detection function.

Function:Active‑power load‑sharing controller with integrated power‑frequency transducer. Measures generator AC voltage and CT current. Realises proportional active‑power distribution under parallel condition;supports standalone frequency control,isochrone mode and constant‑power operation. Provides increase/decrease relay outputs for governor adjustment. Built‑in reverse‑power protection relay output and low‑power signal output. Front‑panel potentiometers adjust proportional range Xp,minimum pulse time Tn and protection delay parameters.

Installation:35mm DIN‑rail mounting or base screw mounting inside switchgear cabinet

Interface:

‑Terminal block:PT voltage input,CT current input

‑Relay output:SG increase / SG decrease for governor control

‑Analogue parallel bus terminals PS / FS

‑Unload input,low‑power output,reverse‑power trip output

‑Front‑panel setting potentiometers and LED status indicators

Circuit feature:Hardware analogue measuring circuit,surge suppression for AC measuring inputs;parallel bus automatic disconnection under power‑loss condition;reverse‑power threshold fixed‑grade selection with time‑delay;no software configuration required,all parameters adjusted by local potentiometers.

Feature:Discontinued classic marine load‑sharing unit,classification society approved;relay contact rating 250VAC / 24VDC,8A resistive load. Distinguished from LSU‑112DG:integrates reverse‑power protection and low‑power detection function.

Diagnostic:Front‑panel LED indicates power supply,voltage detection and control‑active status;reverse‑power and low‑power trigger status indicated by LED and relay contact output.

Power supply:24VDC(18‑32VDC),typical power consumption 2.6W

Protection class:IP20

Horizontal operating temperature:‑25℃ ~ +70℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Shock & vibration:Complies with DNV marine environmental requirement

Weight:0.74kg

Dimensions:145mm ×110mm ×75mm

Certification:DNV,CE,marine type approval

Built‑in function

LSU‑113DG load‑sharing unit completes active‑power balance for multi‑generator parallel power station. It sends adjust pulses to engine governor to realise load distribution. Built‑in reverse‑power protection avoids generator motoring risk;low‑power output detects light‑load running status. Widely used for marine and industrial generator parallel switchgear cabinets.

Product Brief

LSU‑113DG belongs to DEIF Uni‑line series spare‑part family,active‑power load‑sharing unit with reverse‑power and low‑power protection. Different from LSU‑112DG without protection function. Parameters adjusted by front‑panel potentiometers without configuration software. Widely applied for genset parallel cabinet maintenance and renovation. ESD anti‑static protection shall be followed during installation.