5. Arc sensors
The AQ-100 series provides different types of arc sensors to be used with different units and different
switchgear types according to specific application requirements. There are two types of sensors: arc
light point sensors and arc light fiber optic loop sensors.
Arc light point sensors are typically installed in metal-clad compartments, and they provide a quick and
accurate location of the faulted area. Arc light fiber loop sensors typically cover a wider protected area
with one fiber, when there is no need to pinpoint the exact location for a fault.
5.1. Arc light point sensor AQ-01
AQ-01 is an arc light point sensor with a light-sensitive photodiode element activated by arc light. The
AQ-01 sensors should be mounted in the switchgear cubicles in such a way that the light-sensitive part
covers the protected area as completely as possible. Only one sensor should be used per one closed
metal-clad compartment. In open spaces (such as a busbar section) the sensors should be mounted
no more than two meters apart.
The default light intensity threshold for an AQ-01 sensor is 8,000 lux. Depending on the demand of the
application, the default threshold can also be set to 25,000 lux or 50,000 lux. An arc light sensor does
not require further settings by the user. Its detection radius is 180 degrees.
Figure. 5.1. - 10. The AQ-01 light sensor.
An AQ-01 is installed either on the compartment wall or through the wall. When wall-mounting, the unit
is placed on the wall (with the gray side against the wall) and then fixed to the wall with two screws
from the back of the sensor. Through-the-wall mounting is similar: the unit is placed on the wall (with
the blue side against the wall and the eye is pushed into the drilled compartment hole for
protection) and then fixed to the wall with two screws from the back of the sensor. No external
mounting plates are needed regardless of the mounting type; however, mounting brackets can be used
if so desired.
Up to three (3) sensors can be connected in series. Installing a connection cable is simple as each end
of the sensor has a detachable cover over the cable connectors. Please remember to reattach the
cover once the wires have been installed.
NO
NOTE!
TE!
The AQ-01 point sensor does no
nott come with a connection cable!
A
AQ
Q-103L
-103LV
V
Instruction manual
Version: 1.00
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© Arcteq Relays Ltd
