AF0500-00 Datasheet, PDF (1/2 Pages) Littelfuse – Protection Relays & Controls Arc-Flash Monitoring

Protection Relays & Controls
Arc-Flash Monitoring
AF0500 SERIES
Arc-Flash Relay
Features & Benefits
FEATURES
4 arc sensor inputs
Arc-Flash trip time <1ms
2 IGBT high speed trip outputs
Universal Power Supply
Fail-safe system
LED indication
(on unit and each sensor)
Discrete wire networking
USB interface
Data logging
Ethernet interface
BENEFITS
Supports both point and fiber sensors
Limits arc-flash damage and risk of injury
Supports applications such as upstream
breaker tripping or tie breaker tripping
100-240 Vac, 24-48 Vdc, or 110-250
Vdc supply
Continuous monitoring of optical sensors
and inputs ensures protection
Trip and sensor status indicated both on
relay and sensors
Multiple AF0500 units can be
interconnected to form a system
Data logging and configuration software
uses a USB interface with no drivers or
software installation
On-board event recorder for system
diagnostics (2048 log lines)
Modbus^® TCP communication
Ordering Information
ORDERING NUMBER
AF0500-00
AF0500-00-CC
DESCRIPTION
Arc-Flash Relay
Arc-Flash Relay, Conformally Coated
Description
The AF0500 is a microprocessor-based arc-flash relay that
limits arc-fault damage by detecting the light from an arc flash
and rapidly tripping the feeder breaker. The unit is well suited
for switchgear, transformer and power converter applications.
Sensors, inputs, and connections are health 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 to event logs.
AF0500 includes an Ethernet interface and supports Modbus^®
TCP communication. Zone tripping, upstream breaker tripping
and tie breaker tripping applications can be easily configured.
A number of control inputs allows interconnection of multiple
AF0500 units to form a system.
Optical Sensors
The AF0500 accepts both PGA-LS10 point sensors and
PGA-LS20/PGA-LS30 fiber optical sensors. Thus any
combination of fiber or point sensors is supported.
For fast fault location, front-panel and sensor LEDs indicate
sensor health and which sensor detected an arc fault.
Sensor Placement
The AF0500 Arc-Flash Relay and sensors are easily installed
in retrofit projects and new switchgear with little or no
re-configuration. Simple applications work straight out of the
box with no need of PC configuration. More complex systems
with multiple power sources are configured using the relay’s
built-in USB interface software.
Generally, it is recommended to mount 1 or 2 sensors per
cubicle to cover all horizontal and vertical bus bars, breaker
compartments, drawers, and anywhere that there is a
risk for an arc fault. Threading a fiber-optic sensor through
the cabinets and in areas where point-sensor coverage is
uncertain results in complete coverage and an added level
of redundancy. Even if policy is to only work on de-energized
systems, all maintenance areas should be monitored to
prevent potential damage and additional cost.
© 2015 Littelfuse Protection Relays & Controls
Littelfuse.com/ArcFlash
Arc Flash
Fiber-Optic Sensor
Point Sensors
Rev: 1-B-100615
Based on Manual 0-C-091615