DEIF HAS‑111DG Semi‑Automatic Synchronisation Check Relay

Technical Specifications

Model:HAS‑111DG

Brand:DEIF

System compatibility:Uni‑line series semi‑automatic synchronisation check relay,applied for manual or semi‑automatic generator‑to‑busbar paralleling,works with external governor and AVR,analogue outputs cooperate with DEIF load‑sharing units.

Function:Synchronisation condition checking relay. Monitors generator and busbar voltage,frequency and phase angle. Outputs closing relay pulse when all deviations are within potentiometer‑set thresholds. Provides two analogue outputs for speed and voltage regulation signal. Supports dead‑bus function via hardware option settings. Front‑panel potentiometers adjust phase window,slip frequency and voltage tolerance. No automatic governor‑AVR closed‑loop regulation.

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

Interface:

‑Terminal block:generator and busbar PT voltage input

‑2×analogue regulation output

‑Sync‑condition closing relay output

‑Front‑panel potentiometers and status LED indicators

Circuit feature:Analogue hardware logic,surge suppression for AC measuring inputs,dead‑bus function configurable by hardware option,relay transient protection.

Feature:Classic semi‑auto sync‑check relay,only validates synchronisation conditions,does not actively drive governor or AVR;parameters adjusted by front‑panel potentiometers,PC configuration software is not required.

Diagnostic:Front‑panel LED indicates power supply,measurement status and synchronisation condition.

Power supply:24VDC(18‑32VDC),typical power consumption 4.5W

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:0.72kg

Dimensions:145mm ×110mm ×75mm

Certification:DNV,CE,marine type approval

Built‑in function

HAS‑111DG synchronisation check relay judges paralleling conditions for manual or semi‑automatic generator parallel system. It sends closing pulse only when voltage,frequency and phase meet preset limits,meanwhile provides analogue regulating signals for governor and AVR. Widely used for marine and industrial genset switchgear cabinets.

Product Brief

HAS‑111DG belongs to DEIF Uni‑line series spare‑part family,semi‑automatic sync‑check relay. Distinguished from full‑automatic FAS‑113DG/FAS‑115DG,it has no automatic governor‑AVR closed‑loop control. Widely applied for genset parallel cabinet maintenance and renovation. ESD anti‑static protection shall be followed during installation.