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Reduce Arc-Flash Hazards
- SEL-751A Feeder Protection Relay
Combined light-sensing technology and fast overcurrent protection provide high-speed, arc-flash detection without false tripping.
In addition to arc-flash detection, the SEL-751A provides several other methods to limit personnel exposure to arc-flash hazards. Reduce the danger of explosive arc-flash incidents by reducing the available fault current energy or removing personnel from the danger zone. Coordinate protection for faster clearing times, and stay outside the danger zone completely with wireless or remote communication.
- Coordinate Protection
Use SEL Mirrored Bits® communications to coordinate upstream protection if a fault occurs. Coordination and fast bus trip schemes allow short delays (two to three cycles) for backup protection, reducing arc-flash energy.
- Reduce Arc-Flash Energy
Use instantaneous elements during maintenance. Fast trip times limit available arc-flash energy, reducing danger of injury or damage.
- Stay Outside the Danger Zone
Use Ethernet or serial communications to remotely obtain metering, event, and maintenance information from the relay. Or, use an SEL-3022 Wireless Encrypting Transceiver to provide encrypted wireless communication. Delayed breaker closing allows personnel to move to a safe distance.
- More Information
The SEL-751A provides protection, integration, communications, and control capabilities that enhance safety. These capabilities improve safety, provide regulatory compliance, and protect equipment from damage.
