LPRC/2/W Three Phase Under/Over Voltage Monitoring Relay

• L-Series Dimensions (PDF)
• LPRC/2/W Connection Diagram (PDF)
• LPRC/2/W Function Diagram (PDF)

• L-Series UL Certification (PDF)
• Declaration of Conformity - L-Series 3-Phase - LVD (PDF)
• Declaration of Conformity - L-Series 3-Phase DPDT - EMC (PDF)
• REACH Declaration (PDF)
• RoHS Certificate of Compliance (PDF)
• Certificate/Declaration of Origin (PDF)

Typical applications include:

• Electrical distribution panels
• Electric heating systems
• Industrial power-supply panels
• Generator and automatic transfer panels

Key benefits:

• Helps protect against unsuitable supply voltage — Under and over voltage monitoring allows an external control circuit to inhibit equipment when the measured supply leaves the set voltage window.
• Avoids phase-order restrictions — The relay operates irrespective of phase sequence, allowing voltage supervision where phase order is immaterial or checked separately.
• Responds to phase and neutral faults — Phase-loss detection and neutral-loss detection in the supported four-wire arrangement can release the control permissive when the incoming supply is incomplete.
• Helps avoid unnecessary voltage-fault trips — An adjustable fault delay allows brief voltage deviations to be tolerated before the relay changes state, subject to the documented immediate-trip conditions.