Arcteq AQ-110 LV Series User manual

AQ-110xLV
Arc sensor unit with overcurrent

Table of contents
1. Manual r1. Manual reevision novision notteses.................................................................................................................................................................................................................................... 55
2. A2. Abbrbbreeviaviationstions ............................................................................................................................................................................................................................................................ 66
3. General3. General.............................................................................................................................................................................................................................................................................. 77
3.1. Dimensions and installation................................................................................................... 7
3.2. Wiring ................................................................................................................................. 10
3.3. Unit features ....................................................................................................................... 12
3.4. Simpli_ed block diagram ..................................................................................................... 13
4. Opera4. Operation and con_gtion and con_guraurationtion ............................................................................................................................................................................................................ 1616
4.1. LED indicator functions....................................................................................................... 16
4.2. LED operations guide ......................................................................................................... 16
4.3. Push-button (SET) .............................................................................................................. 17
4.3.1. System setup (auto-con_guration) ............................................................................ 18
4.3.2. Reset........................................................................................................................ 18
4.3.3. Input connection check ............................................................................................ 18
4.4. Current threshold settings................................................................................................... 18
4.5. DIP switch settings ............................................................................................................. 19
4.5.1. Scheme selection ..................................................................................................... 21
4.5.2. Available logic schemes............................................................................................ 21
4.6. Non-volatile memory ........................................................................................................... 24
5. Ar5. Arc sensorsc sensors.............................................................................................................................................................................................................................................................. 2525
5.1. Arc light point sensor AQ-01............................................................................................... 25
5.2. Arc light and pressure point sensor AQ-02.......................................................................... 26
5.3. Arc light _ber optic loop sensor AQ-06 ............................................................................... 26
5.4. Arc light _ber optic loop sensor AQ-07 ............................................................................... 27
5.5. Arc light _ber optic loop sensor AQ-08 ............................................................................... 28
5.6. Sensor—unit dependencies ................................................................................................ 28
5.7. Connecting sensors............................................................................................................ 29
6. S6. Syyststem self-superem self-supervisionvision.......................................................................................................................................................................................................................... 3030
7. Connections7. Connections............................................................................................................................................................................................................................................................ 3131
7.1. Outputs .............................................................................................................................. 33
7.1.1. Trip relays................................................................................................................. 33
7.1.2. High-speed output(s) ................................................................................................ 33
7.1.3. inary outputs .......................................................................................................... 34
7.1.4. System failure relay................................................................................................... 34
7.2. Inputs ................................................................................................................................. 34
7.2.1. Current measurement inputs .................................................................................... 34
7.2.2. Arc sensor channels................................................................................................. 34
7.2.3. inary inputs ............................................................................................................ 35
7.3. Auxiliary voltage.................................................................................................................. 35
8. T8. Testingesting ............................................................................................................................................................................................................................................................................ 3636
8.1. Testing the light-only mode ................................................................................................. 36
8.2. Testing the light and current mode ...................................................................................... 36
8.3. Testing the C FP function................................................................................................... 37
8.4. Testing the unit operation time ............................................................................................ 37
8.5. Test plan example ............................................................................................................... 37
9. T9. Trroubleshoooubleshootingting.................................................................................................................................................................................................................................................. 3939
10. T10. Technicechnical daal datata.................................................................................................................................................................................................................................................. 4040
10.1. Protection......................................................................................................................... 40
10.2. Outputs ............................................................................................................................ 40
10.2.1. Trip relays............................................................................................................... 40
10.2.2. inary output(s) ...................................................................................................... 40
10.2.3. High-speed output(s) .............................................................................................. 40
10.2.4. System failure relay................................................................................................. 41
10.3. inary inputs..................................................................................................................... 41
10.4. Auxiliary voltage................................................................................................................ 41
AAQQ-110xL-110xLVV
Version: 1.00
1 © Arcteq Relays Ltd

10.5. Sensors ............................................................................................................................ 41
10.6. Disturbance tests.............................................................................................................. 42
10.7. Voltage tests..................................................................................................................... 43
10.8. Mechanical tests............................................................................................................... 43
10.9. Environmental conditions .................................................................................................. 43
10.10. Casing and packaging .................................................................................................... 43
11. Or11. Ordering infdering informaormationtion .............................................................................................................................................................................................................................. 4444
12. Contact and r12. Contact and reeffererence infence informaormationtion...................................................................................................................................................................................... 4646
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 2

Disclaimer
Please read these instructions carefully before using the equipment or taking any other actions with
respect to the equipment. Only trained and quali_ed persons are allowed to perform installation,
operation, service or maintenance of the equipment. Such quali_ed persons have the responsibility to
take all appropriate measures, including e.g. use of authentication, encryption, anti-virus programs,
safe switching programs etc. necessary to ensure a safe and secure environment and usability of the
equipment. The warranty granted to the equipment remains in force only provided that the instructions
contained in this document have been strictly complied with.
Nothing contained in this document shall increase the liability or extend the warranty obligations of the
manufacturer Arcteq Relays Ltd. The manufacturer expressly disclaims any and all liability for any
damages and/or losses caused due to a failure to comply with the instructions contained herein or
caused by persons who do not ful_l the aforementioned requirements. Furthermore, the manufacturer
shall not be liable for possible errors in this document.
Please note that you must always comply with applicable local legislation and regulations. The
manufacturer gives no warranties that the content of this document is in all respects in line with local
laws and regulations and assumes no liability for such possible deviations.
You are advised to notify the manufacturer in case you become aware of any errors in this document or
of defects in the equipment.
The manufacturer reserves the right to update or amend this document at any time.
AAQQ-110xL-110xLVV
Version: 1.00
3 © Arcteq Relays Ltd

Copyright
Copyright © Arcteq Relays Ltd. 2020. All rights reserved.
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 4

1. Manual revision notes
RReevisionvision 1.001.00
Date September 2020
Changes - The _rst revision of the manual.
AAQQ-110xL-110xLVV
Version: 1.00
5 © Arcteq Relays Ltd

2. Abbreviations
I – binary input
O – binary output
C – circuit breaker
C FP – circuit breaker failure protection
CT – current transformer
EPROM – erasable, programmable read-only memory
HSO – high-speed output
LED – light emitting diode
LV – low-voltage
MV – medium-voltage
NC – normally closed
NO – normally open
PC – printed circuit board
QD – quenching device
RF – radio frequency
Rx – receiver
SAS – standard arc scheme
SF – system failure
Tx – transceiver
μP - microprocessor
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 6

3. General
The AQ-110xLV (AQ-110PLV and AQ-110FLV) device is a sophisticated microprocessor-based arc
flash protection unit. It has a combined current and arc sensing which provides more criteria for
tripping. The device is designed to minimize the damage caused by an arcing fault (arc flash) by
tripping the circuit breaker which supplies current to the fault. The complete system self-supervision
functionality of AQ-110xLV provides the highest level of dependability as it continuously monitors all
internal system functions as well as all external connections.
The AQ-110xLV device is designed according to the latest protection relay standards and is therefore
suitable for installations in rough environments. These include utilities and power plants (both traditional
and renewable), various heavy industry applications (off-shore, marine, oil, gas, mining, steel, etc.) as
well as commercial and institutional electrical systems. While AQ-110xLV is suitable for MV use, it is
designed for LV switchgears and for motor control center applications in both new and retro_tted
installations.
3.1. Dimensions and installation
AQ-110xLV can be either door-mounted or panel-mounted in a standard 19 inch rack. The unit's
dimensions are as follows:
• Height: 177 mm (7.00")
• Width: 102 mm (4.02")
• Depth: 162 mm (6.38").
The _gure below presents a side view of the device and gives the dimensions in more detail. Please
note that all values are given in millimeters.
AAQQ-110xL-110xLVV
Version: 1.00
7 © Arcteq Relays Ltd

Figure. 3.1. - 1. Dimensions of the device.
The image below presents the dimensions of the cut-out needed for mounting the unit on a panel.
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 8

Figure. 3.1. - 2. Cut-out for panel-mounting a unit.
AAQQ-110xL-110xLVV
Version: 1.00
9 © Arcteq Relays Ltd

Figure. 3.1. - 3. Installing a unit into a cut-out.
3.2. Wiring
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 10

Figure. 3.2. - 4. Wiring diagram for AQ-110PLV.
AAQQ-110xL-110xLVV
Version: 1.00
11 © Arcteq Relays Ltd

Figure. 3.2. - 5. Wiring diagram for AQ-110FLV.
3.3. Unit features
AQ-110xLV is a multipurpose arc flash protection unit and can be applied to a variety of applications. It
can be used on its own as a stand-alone unit, or it can be a part of a more complex arc protection
system through the binary bus.
AQ-110xLV comes in two variants. The AQ-110PLV variant supports four (4) point sensor channels as
well as one (1) optional _ber sensor channel. The AQ-110FLV variant supports three (3) _ber sensor
channels. All other features are the same in both variants.
The following list presents the main features of the 110PLV unit:
• 92…265 V AC/DC auxiliary power supply oror 18…72 V DC auxiliary power supply (optional)
• three (3) phase current inputs with one _fths of the nominal current
• four (4) arc point sensor channels
• one (1) _ber loop sensor channel (optional)
• two (2) binary inputs with nominal operation voltage of 24 V DC
• two (2) high-speed semiconductor trip outputs (HSO [HSO1] and HST [HSO2])
• three (3) normally open trip relay outputs
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 12

• one (1) normally open trip relay output oror one (1) normally closed trip relay output (electronic
lock-out)
• one (1) binary output (24 V DC)
• one (1) system failure output
• nineteen (19) indication LEDs
• one (1) push-button.
The following list presents the main features of the 110FLV unit:
• 92…265 V AC/DC auxiliary power supply oror 18…72 V DC auxiliary power supply (optional)
• three (3) phase current inputs with one _fths of the nominal current
• three (3) _ber loop sensor channels
• two (2) binary inputs with nominal operation voltage of 24 V DC
• two (2) high-speed semiconductor trip outputs (HSO [HSO1] and HST [HSO2])
• three (3) normally open trip relay outputs
• one (1) normally open trip relay output oror one (1) normally closed trip relay output (electronic
lock-out)
• one (1) binary output (24 V DC)
• one (1) system failure output
• eighteen (18) indication LEDs
• one (1) push-button.
Figure. 3.3. - 6. Arc protection unit AQ-110PLV.
Figure. 3.3. - 7. Arc protection unit AQ-110FLV.
3.4. Simpli>ed block diagram
AAQQ-110xL-110xLVV
Version: 1.00
13 © Arcteq Relays Ltd

The _gures below presents the main components that can be found in the AQ-110xLV units
(AQ-110PLV and AQ-110FLV).
Figure. 3.4. - 8. Simpli_ed block diagram of AQ-110PLV.
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 14

Figure. 3.4. - 9. Simpli_ed block diagram of AQ-110FLV.
AAQQ-110xL-110xLVV
Version: 1.00
15 © Arcteq Relays Ltd

4. Operation and con>guration
4.1. LED indicator functions
The AQ-110PLV unit has nineteen (19) indication LEDs and the AQ-110FLV unit has eighteen (18)
indication LEDs. Apart from the "Power" and "Error" LEDs, the user can write their own identi_cations
for each of the remaining LEDs on the text insert located in the transparent pocket next to the LEDs.
The LEDs are on the unit's front panel to allow for a clear view without a separate need to open doors.
When the unit is powered up, it performs an LED test. All LEDs are turned on for two seconds and then
turned off. Only the blue "Power" LED stays on.
When the unit operates normally, only the blue "Power" LED is lit.
All current measuring channels (that is, IL1, IL2 and IL3) have their own indication LEDs. When any
channel measurement exceeds the set threshold value for longer than 1.5 ms, its corresponding LED
turns on. In an open CT condition both the corresponding current channel indicator LED and the "Error"
LED are blinking.
The LEDs of inactive sensors are off. If an arc sensor is activated for longer than 1.5 ms, its
corresponding LED turns on. The activation function of the sensor LEDs is latched when the LED's light
is not blinking.
If there is a loose sensor wire or if the self-supervision function detects a con_guration mismatch (that
is, a new sensor has been attached but the auto-con_guration system setup has not been run), the
corresponding LED starts flashing and the "Error" LED activates.
The binary I/O LEDs indicate the status of the input and output lines. If any of the lines become active
for longer than 1.5 ms, the corresponding LED turns on (that is, they become latched). This also
happens when a trip situation occurs. The trip outputs are controlled with DIP switch settings. All
activation and trip indication LEDs are latched, even if the DIP switch settings are in the non-latched
mode.
All LED indications are stored in the non-volatile memory (EPROM) to help identify the necessary trip
information if auxiliary power is lost. When the unit is re-powered after a power supply loss, the front
panel shows the status of all LEDs.
You can clear the LEDs by pushing the SETSET button.
4.2. LED operations guide
The table below describes the function of each indicator LED in detail. Please note that the use of
sensor channels differs between the two variants: the S4 and S5 sensor channels are not in use in the
AQ-110FLV variant.
Table. 4.2. - 1. LED operations of AQ-110PLV and AQ-110FLV.
LED name
(color) Off Steady light Blinking Action if abnormal
POWER
(blue)
The auxiliary
power supply is
disconnected.
The auxiliary
power
supply is
connected.
N/A Check the power supply.
ERROR
(red)
The system is
healthy.
A system
failure has
occured.
A con_guration mismatch has been
detected. Protection is partially
operational.
Verify the system condition (see
the "System self-supervision" and
"Troubleshooting" chapters).
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 16

LED name
(color) Off Steady light Blinking Action if abnormal
T1–T4
(red) Normal status.
The trip relay
has
activated.
N/A
Check what caused the trip, clear
the fault and reset the indicator
LEDs with the push-button.
S1–S3
(amber) Normal status.
Light
information
has
activated the
sensor
channel.
There is a sensor channel
discontinuity or a system setup has not
been performed; oror, pressure
information has activated the sensor
channel.
Check the sensor continuity or
perform a system setup (see the
"System setup" chapter); oror,
check what activated the sensor.
S4
(amber)
N ! OnlN ! Only iny in
AAQQ-110P-110PLLV!V!
Normal status.
Light
information
has
activated the
sensor
channel.
There is a sensor channel
discontinuity or a system setup has not
been performed; oror, pressure
information has activated the sensor
channel.
Check the sensor continuity or
perform a system setup (see the
"System setup" chapter); oror,
check what activated the sensor.
S5
(amber)
N ! OnlN ! Only iny in
AAQQ-110P-110PLLV!V!
Normal status.
The _ber
sensor
channel has
been
activated.
There is a _ber sensor discontinuity or
a system setup has not been
performed.
Check the sensor continuity or
perform a system setup (see the
"System setup" chapter); oror, check
what activated the sensor.
I1– I2
(amber) Normal status.
The binary
input has
been
activated.
The binary input has a loose
connection. Check the binary input wiring.
O1
(amber)
Normal status.
The binary
output has
been
activated.
N/A -
IL1–IL3
(amber)
Normal status
(the actual
current is
below the set
threshold).
The
measured
current is
above the
set
threshold.
There is an open CT connection in the
channel.
Check the set current thresholds,
or check the CT wiring.
HSO (HSO1)
(red) Normal status.
The high-
speed
output has
been
activated.
N/A
Check what activated the output,
clear the fault and reset the
indicator LEDs with the bush-
button.
HST (HSO2)
(red) Normal status.
The high-
speed
output has
been
activated.
N/A
Check what activated the output,
clear the fault and reset the
indicator LEDs with the push-
button.
4.3. Push-button (SET)
The unit contains one push-button, SETSET, and it can be used for all operational functions. The push-
button is used for setting up the system (also known as auto-con_guration), for resetting the indicator
LEDs and the latched output relays, as well as for checking the input connection.
AAQQ-110xL-110xLVV
Version: 1.00
17 © Arcteq Relays Ltd

4.3.1. System setup (auto-con>guration)
After all sensors and binary lines have been connected, a system setup procedure (also known as
auto-con_guration) must be performed. The sequence is initialized by pressing the SETSET push-button for
two seconds. This causes the sensor and binary LEDs to start blinking. The unit scans these inputs to
see if they are connected; when an input is detected, the corresponding LED lights up to mark that a
connection was found. All inputs that are not connected continue to blink for three more seconds.
Then, all LEDs are turned off. Additionally, the DIP switch setting are stored in the non-volatile memory
during this sequence.
All sensor inputs remain operational even when they have not been auto-con_gured. System setup is
only used for self-supervision purposes.
Please note that to recon_gure a unit with fewer connections ( I/ O or sensors) than in the previously
memorized setup, one of the DIP switches must be moved back and forth once before the system
setup procedure is carried out. After this, you must wait one minute before you begin the new auto-
con_guration sequence.
You can recon_gure a unit with more connections at any time without the wait and without having to
move one of the DIP switches.
4.3.2. eset
All LED indications and latched trip relays can be reset by pressing the SETSET push-button for
one second.
Unless the button is pressed, the latched trip relays remain active until the auxiliary power is
disconnected. All LED indications also remain active even when the auxiliary power supply is
disconnected unless the button is pressed. Please refer to the "Non-volatile memory" chapter for more
information.
4.3.3. Input connection check
After the system setup (auto-con_guration) procedure is completed, you can verify the connectivity of
all sensors and binary input channels by pressing the SETSET push-button three (3) times within two
(2) seconds. The LEDs of the corresponding sensors and binary input channels start blinking while the
"Power" LED is already blinking. The LEDs blink as many times as there are connected sensors and
binary output channels from other units.
4.4. Current threshold settings
The AQ-110xLV units have three (3) phase current measurement inputs. The phase current
measurements are used as secondary trip criteria in an arc protection system to avoid trips caused by
natural light sources.
The threshold for phase overcurrent is typically set to 50 % above the highest load current. The set
points are set by using the I> trimmer (see the image below). You can get an accurate setting by
injecting the desired set current into the phase current inputs of the unit and by simultaneously
adjusting the trimmer until the phase current indicator LEDs are lit.
AAQQ-110xL-110xLVV
Version: 1.00
© Arcteq Relays Ltd 18

Figure. 4.4. - 10. Overcurrent setting trimmer.
You can also _ne-tune the current threshold setting by adjusting the trimmer and switching between lit
and unlit LEDs (see the diagram below).
Figure. 4.4. - 11. Fine-tuning the current threshold setting.
5
4
3
2
1
x In
LED lit
LED unlit
The setting range for the phase overcurrent stage is 0.5…6 × In.
4.5. DIP switch settings
The DIP switches are used to con_gure the unit's tripping logic and other functionalities. The various
trip schemes can be programmed easily by selecting the appropriate DIP switch positions. However,
the most convenient way to set the AQ-110xLV unit or a more complex arc protection system is to use
Standard Arc Schemes (SAS).
Tripping can be based on arc light only, or on both arc light and current thresholds, or on other tripping
criteria (such as undervoltage, etc.). You can also enable the C FP (circuit breaker failure protection)
scheme with the DIP switches. Current threshold and other tripping criteria can also be applied to
I1 to block tripping caused by natural light sources.
oth AQ-110xLV variants contain two switch groups, SW1 and SW2. They are located at the back of
the unit for easy access. The scheme selection number is based on binary arithmetic. The _gure below
presents the numbering of the two switch groups, and the tables below that give a detailed description
of the settings for both switch groups.
Figure. 4.5. - 12. DIP switch diagram for AQ-110PLV (left) and AQ-110FLV (right).
AAQQ-110xL-110xLVV
Version: 1.00
19 © Arcteq Relays Ltd