Arcteq AQ 110 Series User manual

INSTRUCTION MANUAL
AQ 110 Arc Protection Unit

Instruction manual –AQ 110 arc protection unit 2 (65)
Revision
1.2
Date
July 2011
Changes
-Sensor chapter revised. (Fiber pictures and point
sensor connections).
-Standard Arc System chapter revised. (e.g. scheme 0a
added)
-Dipswitch definition updated (e.g. HSO latch/non-
latch)
-LED description revised, (current channels LEDs will
not blink during the auto-configuration.)
-Partly AQ110F information added.
-Dimensions and installation chapter, the depth of the
unit is changed from 170mm to 175mm.
-Casing and dimensions section, the unit size and the
size with package have been added.
Revision
1.3
Date
April 2012
Changes
-AQ SAS™chapter is removed from manual.
Revision
1.4
Date
July 2012
Changes
-Scheme Select Dipswitch Settings chapter is added.
-The point sensor max. wiring length is up to 200 meters.
System self-supervision chapter is revised.
Revision
1.5
Date
May 2019
Changes
-Move scheme selection content to dipswitch setting,
refer to chapter 3.5.
-Technical data update
-Add application example, refer to chapter 6.

Instruction manual –AQ 110 arc protection unit 3 (65)
Read these instructions carefully and inspect the equipment to become familiar
with it before trying to install, operate, service or maintain it.
Electrical equipment should be installed, operated, serviced, and maintained only
by qualified personnel. Local safety regulations should be followed. No
responsibility is assumed by Arcteq for any consequences arising out of the use
of this material.
We reserve right to changes without further notice.

Instruction manual –AQ 110 arc protection unit 4 (65)
TABLE OF CONTENTS
1ABBREVIATIONS............................................................................................................ 7
2GENERAL .......................................................................................................................... 8
2.1 Arc protection unit AQ 110 features....................................................... 9
2.2 Simplified block diagram...........................................................................11
3OPERATION AND CONFIGURATION....................................................................13
3.1 LED indicator functions..............................................................................13
3.2 LED OPERATION QUICK GUIDE...............................................................14
3.3 Push-button description............................................................................17
3.3.1 Auto configuration (system setup).......................................................17
3.3.2 Reset................................................................................................................17
3.3.3 Input connection check ............................................................................18
3.4 Current threshold setting..........................................................................18
3.5 Dipswitch settings........................................................................................19
3.5.1 Scheme selection ........................................................................................22
3.6 Non-volatile memory..................................................................................27
4ARC SENSORS ..............................................................................................................28
4.1 Arc light point sensor AQ 01....................................................................28
4.1.1 AQ 01 Installation and wiring.................................................................29
4.1.2 AQ 01 Technical data.................................................................................31
4.2 Arc light fiber optic loop sensor AQ 06 ...............................................31
4.2.1 AQ 06 Technical data.................................................................................32
4.3 Arc light fiber optic loop sensor AQ 07 ...............................................33
4.3.1 AQ 07 Technical data.................................................................................34
4.4 Arc light fiber optic loop sensor AQ 08 ...............................................34
4.4.1 AQ 08 Technical data.................................................................................35
4.5 Sensor Type Dependencies ......................................................................36
4.6 Sensor Connection.......................................................................................36
4.6.1 Arc light point sensor AQ01 connection ............................................36
5SYSTEM SELF-SUPERVISION ...................................................................................43
5.1 Open CT monitoring ...................................................................................44
6APPLICATION EXAMPLE ...........................................................................................45
6.1 MV –two incomers with tie breaker .....................................................45
7CONNECTIONS ............................................................................................................47
7.1 Outputs............................................................................................................49

Instruction manual –AQ 110 arc protection unit 5 (65)
7.1.1 Trip relays T1 and T2..................................................................................49
7.1.2 Trip relays T3 and T4..................................................................................49
7.1.3 High Speed Outputs (HSO1 and HSO2) .............................................49
7.1.4 Binary output BO1 ......................................................................................50
7.1.5 System failure relay SF ..............................................................................50
7.2 Inputs................................................................................................................50
7.2.1 Current measurement inputs..................................................................50
7.2.2 Arc sensor channels S1, S2, S3, S4 and S5 .........................................50
7.2.3 Binary inputs BI1 and BI2 .........................................................................51
7.3 Auxiliary voltage...........................................................................................51
8WIRING DIAGRAMS ...................................................................................................52
9DIMENSIONS AND INSTALLATION......................................................................54
10TESTING..........................................................................................................................56
10.1 Carrying out testing in light only mode...............................................56
10.2 Carrying out testing in light and current mode................................57
10.3 Testing the CBFP function.........................................................................58
10.4 Testing arc flash protection unit operation time..............................58
10.5Test plan example........................................................................................59
11TROUBLESHOOTING GUIDE....................................................................................60
12TECHNICAL DATA .......................................................................................................61
12.1 Protection stages..........................................................................................61
12.2 Auxiliary voltage...........................................................................................61
12.3 Current measuring circuits........................................................................61
12.4 Trip relays T1, T2, T3, T4 ............................................................................61
12.5 System failure relay SF................................................................................62
12.6 High Speed Outputs HSO1, HSO2.........................................................62
12.7 Binary Output BO1.......................................................................................62
12.8 Binary Inputs BI1, BI2..................................................................................62
12.9 Disturbance tests..........................................................................................63
12.10 Voltage tests ..................................................................................................63
12.11 Mechanical tests...........................................................................................63
12.12 Casing and package ....................................................................................63
12.13 Environmental conditions .........................................................................63
13RDERING CODES .........................................................................................................64
13.1 AQ 110x current measurement and arc sensing unit......................64
13.2 AQ 0x arc sensors.........................................................................................64

Instruction manual –AQ 110 arc protection unit 6 (65)
14REFERENCE INFORMATION.....................................................................................65

Instruction manual –AQ 110 arc protection unit 7 (65)
1ABBREVIATIONS
CB –Circuit breaker
CBFP –Circuit breaker failure protection
CT –Current transformer
EMC –Electromagnetic compatibility
HW –Hardware
HSO –High speed output
LED –Light emitting diode
LV –Low voltage
MV –Medium voltage
NC –Normally closed
NO –Normally open
SAS –Standard arc scheme
SF –System failure
SW –Software
uP - Microprocessor

Instruction manual –AQ 110 arc protection unit 8 (65)
2GENERAL
AQ 110 is a sophisticated micro-processor based arc flash protection unit
with combined current and arc sensing. Combined current and arc sensing
provides an integrated dual trip criteria. It is designed to minimize the
damage caused by an arcing fault (arc flash) by tripping the circuit breaker
sourcing the fault current. The AQ 110 complete system self-supervision
function provides the highest level of dependability by continuously
monitoring all internal system functions along with external connections.
AQ 110 is designed according to the latest protection relay standards and is
hence suitable for installations in any environment, such as utility, traditional
or renewable power plants, off shore, marine, oil and gas, mining, steel or
any other heavy industry applications as well as commercial and institutional
electrical systems. AQ 110 is suitable for either medium voltage or low
voltage switchgear and motor control center applications in both new and
retrofit installations.
AQ 110 is a multipurpose arc flash protection unit and can be applied for
variety of applications. AQ 110 can be used as a stand-alone unit or as a
main unit of a more complex arc protection system through the binary bus.

Instruction manual –AQ 110 arc protection unit 9 (65)
2.1 ARC PROTECTION UNIT AQ 110 FEATURES
AQ 110 comes in two versions. AQ110P supports 4 point sensor channels
and optionally one fiber sensor channel. AQ 110F supports 3 fiber sensor
channels. All other features are the same in both versions. Main features of
AQ 110:
-80-265Vac/dc auxiliary power supply or optional 18-72Vdc power
supply
-3 phase current inputs (1/5 amps nominal)
-1 residual current input (1/5 amps nominal)
-4 arc point sensor channels and 1 arc fiber loop channel optionally
(AQ 110P) or 3 arc fiber loop channels (AQ 110F)
-2 binary inputs (nominal voltage of 24 or 110 or 220Vdc)
-2 high-speed semiconductor trip outputs (direct trip circuit rated)
-2 normally open trip relay outputs (direct trip circuit rated)
-1 normally open or optionally normally closed (electronic lock-out)
trip relay output (direct trip circuit rated)
-1 binary output (24Vdc)
-1 system failure relay output

Instruction manual –AQ 110 arc protection unit 10 (65)
Figure 2-1 Arc protection unit AQ 110

Instruction manual –AQ 110 arc protection unit 11 (65)
2.2 SIMPLIFIED BLOCK DIAGRAM
Simplified block diagrams in Figure 2-2-2: AQ110P simplified block
diagram and Figure 2-3: AQ 110F simplified block diagram show the main
components of the AQ110 unit.
Figure 2-2-2: AQ110P simplified block diagram

Instruction manual –AQ 110 arc protection unit 12 (65)
Figure 2-3: AQ 110F simplified block diagram

Instruction manual –AQ 110 arc protection unit 13 (65)
3OPERATION AND CONFIGURATION
3.1 LED INDICATOR FUNCTIONS
AQ 110 contains 20 indication LEDs. A user definable text pocket can be slid
in for identifying each LED function (except Power and Error LEDs). LEDs are
located at the front plate of the unit for clear viewing without a need for
opening doors.
During power up the unit performs a LED-test. All LEDs are turned on for 2
seconds and then back off. Only the blue power LED will remain on. When
powered up, the unit goes in 50ms into protection mode even while the LED
test is being performed.
In normal operation only the blue power LED is ON.
All current measuring channels (IL1, IL2, IL3 and Io) have indication LEDs.
When any channel exceeds the set threshold value the indication LED is
turned on until manual reset is performed. In an open CT condition a
corresponding current channel indicator and Error LED are blinking.
The sensor LEDs in inactive condition are off. If arc sensor is activated the
corresponding sensor channel LED will turn on if the activation is longer than
1.5ms. The sensor LED activation function is latched (steady light). To clear
the LED the “SET” button should be pressed.
In case of loose sensor wire or configuration mismatch (new sensor attached
without running auto-configuration system setup, see chapter 3.3.1)
situation the corresponding LED will start flashing and ERROR LED will
activate.
The Binary I/O LEDs are indicating the I/O-line status. If any of the lines
become active for more than 1.5ms the corresponding LED will turn on
(latch).
In trip situation the corresponding trip LED will turn on. Trip outputs are
controlled by dipswitch settings, see chapter 3.5.
All activation and trip indication LEDs are latched, even if the dipswitch
setting is in non-latched mode. They have to be cleared by pushing the
“SET”-button.

Instruction manual –AQ 110 arc protection unit 14 (65)
LED indications are stored in non-volatile EPROM memory for identifying
the trip information in case the auxiliary power is lost. When re-powering
the unit after power supply loss the actual LED status can be visualized from
the front of the unit.
3.2 LED OPERATION QUICK GUIDE
The table below describes the function of each indicator LED in front of the
AQ 110 unit. Note that the use of sensor channels differs between AQ 110P
and AQ 110F versions. Sensor channels S4 and S5 are not in use in AQ 110F
version.

Instruction manual –AQ 110 arc protection unit 15 (65)
LED
OFF
STEADY
ON
BLINKING
ACTION IF
ABNORMAL
POWER
Blue
Auxiliary
supply
disconnected
Auxiliary
power
connected
N/A
Check the power source
ERROR
Red
System
healthy
System failure
Configuration
mismatch.
Protection
partly
operational
Verify system condition. see
chapters 11:
Troubleshooting guide and
5: System self-supervision
T1
Red
Normal
status
Trip relay T1
activated
N/A
Check the reason for trip.
Clear the fault and reset
indications by pushing SET
button
T2
Red
Normal
status
Trip relay T2
activated
N/A
Check the reason for trip.
Clear the fault and reset
indications by pushing SET
button
T3
Red
Normal
status
Trip relay T3
activated
N/A
Check the reason for trip.
Clear the fault and reset
indications by pushing SET
button
T4
Red
Normal
status
Trip relay T4
activated
N/A
Check the reason for trip.
Clear the fault and reset
indications by pushing SET
button
S1
Amber
Normal
status
Sensor
channel 1
activated by
light
information
Sensor channel
1 discontinuity
or system set-
up not
performed; also
activated by
pressure
information
Check why sensor activated
or check the sensor
continuity or perform
system set-up (see
chapter:3.3.1 Auto
configuration (system setup)
S2
Amber
Normal
status
Sensor
channel 2
activated by
light
information
Sensor channel
discontinuity
or system set-
up not
performed; also
activated by
pressure
information
Check why sensor activated
or check the sensor
continuity or perform
system set-up (see
chapter:3.3.1 Auto
configuration (system setup)
S3
Amber
Normal
status
Sensor
channel 3
activated by
light
information
Sensor channel
3 discontinuity
or system set-
up not
performed; also
activated by
pressure
information
Check why sensor activated
or check the sensor
continuity or perform
system set-up (see
chapter:3.3.1 Auto
configuration (system setup)
S4
Amber
N/A in
AQ 110F
Normal
status
Sensor
channel 4
activated by
light
information
N/A in AQ
110F
Sensor channel
4 discontinuity
or system set-
up not
performed; also
activated by
pressure
information
Check why sensor activated
or check the sensor
continuity or perform
system set-up (see
chapter:3.3.1 Auto
configuration (system setup)

Instruction manual –AQ 110 arc protection unit 16 (65)
S5
Amber
N/A in
AQ 110F
Normal
status
Sensor
channel 5
activated
N/A in AQ
110F
Fiber sensor
discontinuity
or system set-
up not
performed
Check why sensor activated
or check the sensor
continuity or perform
system set-up (see
chapter:3.3.1 Auto
configuration (system setup)
BI1
Amber
Normal
status
Binary input 1
activated
Binary input 1
loose
connection
Check the binary input
wiring.
BI2
Amber
Normal
status
Binary input 2
activated
Binary input 2
loose
connection
Check the binary input
wiring.
BO1
Amber
Normal
status
Binary Output
activated
N/A
IL1
Amber
Normal
status, actual
current below
set point
IL1 current
above
setpoint
Open CT
connection in
channel IL1
Check the current setpoint
levels or check the CT
wiring.
IL2
Amber
Normal
status, actual
current below
set point
IL2 current
above
setpoint
Open CT
connection in
channel IL2
Check the current setpoint
levels or check the CT
wiring.
IL3
Amber
Normal
status, actual
current below
set point
IL3 current
above
setpoint
Open CT
connection in
channel IL3
Check the current setpoint
levels or check the CT wiring
Io
Amber
Normal
status, actual
current below
set point
Residual
current above
setpoint
N/A
Check the residual current
setpoint level
HSO1
Red
Normal
status
HSO 1
activated.
N/A
Check the reason for
activation. Clear the fault
and reset indications by
pushing SET button.
HSO2
Red
Normal
status
HSO 2
activated.
N/A
Check the reason for
activation. Clear the fault
and reset indications by
pushing SET button.
Table 3-1: LED operation quick guide

Instruction manual –AQ 110 arc protection unit 17 (65)
3.3 PUSH-BUTTON DESCRIPTION
AQ 110 contains one single push-button (SET) that can be used for all
operational functions of the unit. The push-button is utilized for auto-
configuration of the system (see chapter 3.3.1) and for resetting the
indicators and latched output relays.
3.3.1 AUTO CONFIGURATION (SYSTEM SETUP)
When all current circuits, sensors and binary lines have been connected an
auto-configuration procedure must be executed. The initialization sequence
is performed by pressing the “SET”-button for 2 seconds, and the AQ 110
sensor LEDs and BI1/BI2 LEDs start blinking. The unit scans these inputs to
see if they are connected and when input is detected the corresponding
LEDs are lit up to mark that a connection was found. The inputs without
connection continue blinking during the remaining 3 seconds. After total
time of 5 seconds, all LEDs are turned off. During this system setup the
dipswitch setting are also stored in non-volatile memory.
All sensor inputs will remain operational even when not auto-configured.
The auto-configuration is only used for self-supervision purposes.
Note: in order to redo auto-configuration for a unit containing less
connections (binary inputs/outputs or sensors) than in previous memorized
set-up a dip-switch (anyone) must be moved back and forth prior to
performing auto-configuration. Timeout allowing new configuration is 1
minute. Reconfiguration with more connections is allowed without moving
the dip-switch.
3.3.2 RESET
All LED indications and latched trip relays are reset by pressing the “SET”-
button for 1 second. Otherwise the latched trip relays will remain activated
until auxiliary power is disconnected. All LED indications will remain active
until reset is performed by operator even in case of disconnecting auxiliary
power supply (see chapter 3.6 Non-volatile memory).

Instruction manual –AQ 110 arc protection unit 18 (65)
3.3.3 INPUT CONNECTION CHECK
After the auto-configuration procedure is completed, the connectivity of
all sensors and binary input channels can be verified by pressing the
push-button 3 times (in 2 seconds). The LED of corresponding sensors
and binary input channels starts to blink while the POWER LED is blinking.
The number of LED blinks are exact same as the number of connected
sensors and connected binary output channels from other units.
3.4 CURRENT THRESHOLD SETTING
AQ 110 unit has 4 current measurement inputs utilized for 3 phase and
residual current measurement. Both phase current and residual current
measurements are utilized as second trip criteria in an arc protection system
in order to avoid trip caused by natural light sources. Phase overcurrent
threshold is typically set 50 % above the highest load current. Residual
overcurrent is set very sensitive. Setpoints are set using trimmers, see Figure
3-1. An accurate setting is obtained by injecting desired set value using relay
test set to phase and residual current inputs of AQ 110 simultaneously
adjusting the trimmers until phase and residual current indication LEDs are
lit.
Setting range for phase overcurrent stage is 0.5 to 6xIn. Setting range for
residual overcurrent stage is 0.05 to 2xIn.
Figure 3-1 AQ110 overcurrent setting trimmers

Instruction manual –AQ 110 arc protection unit 19 (65)
3.5 DIPSWITCH SETTINGS
AQ 110 functionality such as tripping logic is configured using dipswitch
settings. The unit contains two switch groups SW1 and SW2 (see Figure
3-12). Dipswitches are located at the back of the unit for easy access.
Different trip schemes can be easily programmed by selecting the
appropriate dipswitch settings. The most convenient way to set the AQ 110
single unit or more complex arc protection system is to use standard arc
schemes (SAS).
Tripping may be selected based on arc light only or current thresholds.
Other tripping criteria such as undervoltage, or similar may be applied
instead of overcurrent as well using binary inputs. Also the circuit breaker
failure protection (CBFP) scheme may be enabled using the dipswitches. See
Table 3-2 AQ 110 dipswitch SW 1 setting and Table 3-3: AQ 110 dipswitch
SW 2 setting for details of settings.
Figure 3-1 AQ 110 dipswitch SW1 and SW2

Instruction manual –AQ 110 arc protection unit 20 (65)
Dipswitch
Function
selection
ON (LEFT
POSITION)
OFF (RIGHT
POSITION)
8
S1: L> / L>+I>
Sensor channel 1 trip
criteria
Trip on light only (L>).
Trip on light and
overcurrent (L> + I>).
Both signals are
required
simultaneously to trip.
7
S2: L> / L>+I>
Sensor channel 2 trip
criteria
Trip on light only (L>).
Trip on light and
overcurrent (L> + I>).
Both signals are
required
simultaneously to trip.
6
L> / L>+I>
Sensor channels 3-5
trip criteria (channel 3
in AQ 110F)
Trip on light only (L>).
Trip on light and
overcurrent (L> + I>).
Both signals are
required
simultaneously to trip.
5
a/b
Selection of standard
arc scheme (SAS) type
SAS type a.
SAS type b.
4
Scheme select
Selection of standard
arc scheme (SAS)
Scheme selection number
is according to binary
arithmetic.
Scheme selection number
is according to binary
arithmetic.
3
Scheme select
Selection of standard
arc scheme (SAS)
Scheme selection number
is according to binary
arithmetic.
Scheme selection number
is according to binary
arithmetic.
2
Scheme select
Selection of standard
arc scheme (SAS)
Scheme selection number
is according to binary
arithmetic.
Scheme selection number
is according to binary
arithmetic.
1
Scheme select
Selection of standard
arc scheme (SAS)
Scheme selection number
is according to binary
arithmetic.
Scheme selection number
is according to binary
arithmetic.
Table 3-2 AQ 110 dipswitch SW 1 setting