SP431 Phase+N Sequence/Failure/Asymmetry Relay

Data Sheet

General Specifications

Features

• SP430 monitors 3 Phases only, SP431 monitors 3 Phases and Neutral
• 11-pin plug-in.
• Fail-to-safe design.
• Monitoring on three phase supply.
• Sensitive to: NPS Voltage, Reverse phase sequence, loss of phase, phase imbalance, phase asymmetry.
• Insensitive to regenerated EMF.
• High stability under harmonic distortion
• Insensitive to balanced supply variations - prevents nuisance tripping
• Fast response to reversed phase sequence
• Adjustable NPS sensitivity.
• Relay ON LED
• 10A SPDT or 5A DPDT relay output.
• SP430 Supersedes SP433.
• Requires optional S3-B 11-pin base.