FP5201-00

The Eaton Cutler-Hammer FP5201-00 is a specialized feeder protection relay that offers essential capabilities for current and voltage monitoring in power distribution applications. It accommodates current input nominal ratings of either 1 A or 5 A, making it versatile for various setups. Notably, the continuous rating allows for double the nominal rating, and the relay can handle a 1-second rating of up to 50 times the nominal value for brief overcurrent conditions.

This relay's current input burden is low, measured at less than 0.25 VA at 5 A and under 0.05 VA at 1 A, which enhances its efficiency. The voltage input operates nominally at 120 V AC, with an extensive range between 69 and 150 V AC. The burden for this voltage input is recorded at less than 0.015 VA with a 1 MΩ impedance, ensuring minimal impact on the system.

For metering accuracy, the FP5201-00 exhibits ±0.5% accuracy for phase current and ground current readings, effectively covering a range that responds to low-level offsets. Similarly, phase voltage measurement accuracy is maintained at ±0.5% or ±0.2 V across a range from 0 to 160 V AC. The relay further supports frequency measurement precision of ±0.02 Hz within the specified frequency bands around nominal frequencies.

Phase angle accuracy is noted at ±1°, providing analytics essential for power quality monitoring, while power metering achieves ±1.5% accuracy. For control power, the relay is designed to accept a broad input range of 48–125 V DC or 100–240 V AC, adding versatility for integration into various systems. Overall, the FP5201-00 is a crucial component for effective feeder protection in electrical installations.