Arc-Flash Protection with PGR-8800
The PGR-8800 is a microprocessor-based arc-flash relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping. Phase-current-transformer inputs are provided for current-constrained arc-flash protection. When so equipped, a programmable definite-time overcurrent function can be enabled. An optical sensor on the PGR-8800 and adjustable trip level reduce the chance of nuisance tripping by setting a threshold for ambient light. Sensors, inputs, and connections are monitored to ensure fail-safe operation. A secondary solid-state trip circuit provides a redundant trip path. A USB port is used for configuration and access event logs and graphs. The PGR-8800 accepts PGA-LS10 point sensors and PGA-LS20/ PGA-LS30 fiber-optic sensors in any combination, and is marine approved by ABS and DNV/GL.
Features:
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- Arc-Flash trip time: <1 ms
- Multiple sensors (4x PGR-8800 units connected allows up to 24 sensors)
- Optical and current detection
- Upstream Tripping
- Fail-safe system
- Redundant trip circuit
- Adjustable light sensitivity
- Data logging
- Modbus
- Built-in sensor
- LED indication (on unit and each sensor)
- Digital inputs (6)
- Service mode
- Trip coil contact
- Indication contacts
- Easy configuration via USB interface
- Universal power supply/Battery backup