AF0100 Arc-Flash Relay
GENERATOR APPLICATION GUIDE
7
Littelfuse.com/ArcFlash
© 2017 Littelfuse Products
SENSOR COVERAGE (
Distance where a line-of-sight arc will be detected)
Light Sensor
2m
2.5m
Up to
50 m cable
Connect to Relay
180" 2-Meter Half-Sphere
Sensor Viewing Angle
Up to
50 m cables
Receiver
Black Shield
(no light detection)
Transmitter
Connect to Relay
PGA-LS20 Series
Fiber-Optic Sensor
PGA-LS10 Series
Point Sensor
Point Light Sensor
Line-of-sight light sensor detects an arc as small
as 3 kA in a 2-meter half-sphere radius.
§
Visual LED indication for “Ready” or
“Tripped” state to assist with fault location
§
Robust sensor design can withstand a
detected arc-flash event
§
Sensor can be installed up to 50 m (164 ft)
away from relay; electrical cable can be cut
and easily re-terminated in the field
Fiber-Optic Light Sensor
The 360° light sensor detects light throughout
the entire length of the fiber. Ideal to protect
bus bars, multiple compartment installations
like motor control centers, or areas with
many obstructions.
§
Visual LED indication for “Ready” or
“Tripped” state to assist with fault
location
§
Durable resin fiber material allows small
bending radius (>5 cm) and greater
flexibility without breaking
§
Ready to install from the factory, no need
to terminate in the field or polish as with
glass fiber
§
Fiber sensors can be installed in locations
up to 50 m
§
(164 ft) away from relay; electrical cable
can be cut and easily re-terminated in
the field
