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Reliable 115 VAC 60 Hz Operation: Engineered for standard secondary voltage inputs from substation voltage transformers (VTs).
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Induction-Disk Directional Sensing: Precision electromechanical mechanism provides dependable directional power detection.
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Protective Relay Coordination: Features adjustable time-dial calibration to ensure proper trip coordination with downstream protection.
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Drawout Case Design: Allows quick unit withdrawal for inspection, testing, or replacement without disconnecting panel cables.
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Robust 5.75 kgs Construction: Heavy-duty metal chassis built to withstand demanding utility substation thermal and mechanical stress.
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Dual System Protection: Effective for both reverse power monitoring and directional ground-fault protective schemes.
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High Dielectric Isolation: Superior internal coil insulation protects sensitive control loops against high-voltage surges.
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Clear Target Indication: Integrated visual targets provide immediate flag indication following a relay trip event.
The 12IAV51A1A power directional relay delivers the mechanical precision, voltage endurance, and trip accuracy required for mission-critical utility power protection.