Arcteq AQ-102LV User manual

A -102LV
Arc flash protection device
Instruction manual

Table of contents
1 Document inf1 Document informaormationtion .................................................................................................................................................................................................................................... 55
2 A2 Abbrbbreeviaviationstions .............................................................................................................................................................................................................................................................. 66
3 General3 General................................................................................................................................................................................................................................................................................ 77
4 De4 Devicevice ffeaeatturureses ........................................................................................................................................................................................................................................................ 88
5 Connections5 Connections.................................................................................................................................................................................................................................................................. 99
5.1 Simpli^ed block diagram ........................................................................................................ 9
5.2 Inputs .................................................................................................................................. 11
5.2.1 Arc sensor channels.................................................................................................. 11
5.2.2 inary inputs ............................................................................................................. 11
5.3 Outputs ............................................................................................................................... 12
5.3.1 inary outputs ........................................................................................................... 12
5.3.2 Trip relays.................................................................................................................. 12
5.3.3 System failure relay.................................................................................................... 13
5.4 Auxiliary voltage................................................................................................................... 13
6 Ar6 Arc sensorsc sensors................................................................................................................................................................................................................................................................ 1414
6.1 Arc light ^ber optic loop sensor AQ-06 ................................................................................ 14
6.2 Arc light ^ber optic loop sensor AQ-07 ................................................................................ 14
6.3 Arc light ^ber optic loop sensor AQ-08 ................................................................................ 14
6.4 Sensor dependencies .......................................................................................................... 14
6.5 Connecting sensors............................................................................................................. 15
6.5.1 Fiber loop sensors ..................................................................................................... 15
7 Opera7 Operation and con^gtion and con^guraurationtion .............................................................................................................................................................................................................. 1717
7.1 DIP switch settings .............................................................................................................. 17
7.1.1 Scheme selection ...................................................................................................... 18
7.1.2 Available logic schemes............................................................................................. 18
7.2 Push button (SET) ............................................................................................................... 22
7.2.1 System setup (auto-con^guration) ............................................................................. 23
7.2.2 Reset......................................................................................................................... 23
7.2.3 Input connection check ............................................................................................. 23
7.3 LED indicator functions........................................................................................................ 23
7.4 LED operations guide .......................................................................................................... 24
7.5 Non-volatile memory............................................................................................................ 25
8 S8 Syyststem self-superem self-supervisionvision............................................................................................................................................................................................................................ 2626
9 W9 Wiring exampleiring example...................................................................................................................................................................................................................................................... 2727
10 D10 Dimensions and installaimensions and installationtion ............................................................................................................................................................................................................ 2828
11 T11 Testingesting .......................................................................................................................................................................................................................................................................... 3030
11.1 Testing the light-only mode ................................................................................................ 30
11.2 Testing the light and current mode ..................................................................................... 30
11.3 Testing the operation time.................................................................................................. 31
11.4 Test plan example .............................................................................................................. 31
12 T12 Trroubleshoooubleshootingting................................................................................................................................................................................................................................................ 3333
13 T13 Technicechnical daal datata.................................................................................................................................................................................................................................................... 3434
13.1 Operating times ................................................................................................................. 34
13.2 Auxiliary voltage................................................................................................................. 34
13.3 inary inputs...................................................................................................................... 34
13.4 Trip relays .......................................................................................................................... 34
13.5 inary output(s) ................................................................................................................. 35
13.6 System failure relay............................................................................................................ 35
13.7 Fiber optic loop sensors ..................................................................................................... 35
13.8 Disturbance tests............................................................................................................... 36
13.9 Voltage tests...................................................................................................................... 36
13.10 Mechanical tests.............................................................................................................. 36
13.11 Environmental conditions ................................................................................................. 37
13.12 Casing............................................................................................................................. 37
14 Or14 Ordering infdering informaormationtion ................................................................................................................................................................................................................................ 3838
AA -102L-102LVV
Instruction manual
Version: 1.01
© Arcteq Relays Ltd
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15 Contact and r15 Contact and reeffererence infence informaormationtion........................................................................................................................................................................................ 4040
AA -102L-102LVV
Instruction manual
Version: 1.01
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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.
AA -102L-102LVV
Instruction manual
Version: 1.01
© Arcteq Relays Ltd
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Copyright
Copyright © Arcteq Relays Ltd. 2023. All rights reserved.
AA -102L-102LVV
Instruction manual
Version: 1.01
4© Arcteq Relays Ltd
IM00048

1 Document information
Table. 1 - 1. History of Revision 1.
RReevisionvision 1.001.00
Date September 2020
Changes - The ^rst revision of the manual.
RReevisionvision 1.011.01
Date January 2023
Changes
- Updated the Arcteq logo on the cover.
- Updated the distance between the flash and the unit in the "Testing the unit operation time"
chapter.
- Uni^ed terminology used througout the manual (e.g. unit and device means the same thing.
Now all AQ 100 series relays are called "devices").
- Improved many existing drawings.
- Rearranged topics into a more logical order.
- Added connection drawings to input and output descriptions under "Connections" chapter.
- Added hyperlinks to chapters. (e.g. "See Device features chapter for more information")
- Listed more features in Device features chapter.
- T3 is now considered to be normally open by default and normally closed as an order option.
- Added information about binary output pulse messages.
- Many tables have been simpli^ed and made easier to read.
- Scheme matrixes and simpli^ed logic diagrams have been made more detailed in "Available
schemes" chapter.
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2 Abbreviations
AQD – arc quenching device
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
RF – radio frequency
Rx – receiver
SAS – standard arc scheme
SF – system failure
Tx – transceiver
μP - microprocessor
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Instruction manual
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3 General
The AQ-102LV is a sophisticated microprocessor-based arc flash protection device with ^ber loop
sensor channels. The device is designed to minimize the damage caused by an arc fault. This is
done by tripping the circuit breaker which supplies current to the fault when ^ber loops detect arc light.
The device includes a complete system self-supervision functionality of which provides the highest level
of dependability as it continuously monitors all internal system functions as well as all external
connections.
Figure. 3 - 1. Arc protection device AQ-102LV.
The AQ-102LV 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-102LV is suitable for MV use, it is
designed for LV switchgears and for motor control center applications in both new and retro^tted
installations.
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4 Device features
AQ-102LV is an arc flash protection device which can be applied to a variety of applications. It can be
used on its own as a stand-alone device, or it can be a part of a more complex arc protection system
by using binary inputs and outputs to connect multiple AQ 100 series devices together.
The following list presents the main features of the device:
• 92…265 V AC/DC auxiliary power supply oror 18…72 V DC auxiliary power supply (optional)
• three (3) ^ber loop channels for arc flash detection
• one (1) ^ber connector for AQ-1000 arc quenching device control (optional)
• two (2) binary inputs with nominal operation voltage of 24 V DC
• four (4) trip relay outputs
• one (1) binary output (with internal 24 V DC power supply)
• one (1) system failure output (change-over)
• eleven (11) indication LEDs
• eight (8) DIP switches for logic con^guration
• one (1) push button.
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Instruction manual
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5 Connections
The ^gure below depicts the connections of AQ-102. Please note that the SF relay is in the de-
energized position.
Figure. 5 - 2. Rear terminals of AQ-102LV.
5.1 Simpli=ed block diagram
The ^gure below presents the main components of the AQ-102LV device.
AA -102L-102LVV
Instruction manual
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Figure. 5.1 - 3. Simpli^ed block diagram of AQ-102LV.
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Instruction manual
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5.2 Inputs
5.2.1 Arc sensor channels
Figure. 5.2.1 - 4. Arc ^ber loop sensor connections
AQ-102LV has three (3) ^ber loop sensor channels: S1, S2 and S3. Each channel has a
transmitter (Tx) terminal and a receiver (Rx) terminal. When the ^ber loop is connected to the device,
one of its ends is connected to "Tx" and the other to "Rx", both located at the rear of the device. This
sensor loop is then continuously monitored by a test light pulse that travels through the loop. If a
discontinuity is detected, the device goes into Error mode. See System self-supervision chapter for
more information.
AQ-102 can be ordered with an additional transmitter (Tx) terminal for arc quenching device
(AQD) control. Device sends a test light pulse continuously to the arc quenching device to supervise
the ^ber connection. If the arc quenching device doesn't receive the test pulses the device will go into
Error mode.
For more information on sensors, please refer to the Arc sensors chapter as well as to the AQ-0x
instruction booklet which can be found on Arcteq's website (https://www.arcteq.^/downloads/). For
more information on AQ-1000 arc quenching device (AQD) please refer to the AQ-1000 Instruction
manual.
5.2.2 Binary inputs
Figure. 5.2.2 - 5. inary input connections
This device contains two (2) binary inputs. Typically, the binary inputs are used for receiving arc light
signals, master trip commands or overcurrent signals. Function of binary inputs are con^gured using
DIP switches. For more information, please refer to the DIP switch settings chapter.
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Please note that when this device receives an overcurrent signal from a non-AQ 100 series device, the
actual operating time depends on the operating time of the that device. Therefore, the total operating
time cannot be speci^ed in the technical data.
The binary inputs are activated when a connected DC signal reaches the speci^ed nominal voltage
level of the corresponding input. The nominal voltage level for this device is 24 VDC. Please note that
the actual activation threshold of the binary input is at a lower voltage than the speci^ed nominal
voltage value (see Techical Data chapter).
AQ 100 series devices monitor health of wiring between binary inputs and binary outputs. If binary
input loses connection to any of the con^gured binary outputs, the device will go into Error mode. See
System self-supervision chapter for more information.
5.3 Outputs
5.3.1 Binary outputs
Figure. 5.3.1 - 6. inary output connection
The device has one (1) binary output: O1. AQ 100 series binary outputs have an internal 24 VDC
power supply. This binary output is used for sending overcurrent, light detection, master trip and other
signals to other AQ 100 series devices in the same system. The binary output function can be
con^gured with the DIP switches. For more information on the con^guration, please refer to the DIP
switch settings chapter.
AQ 100 series device's binary outputs send out a short pulse every second. inary inputs of the
receiving AQ 100 series devices use these pulses to count the number of connected binary outputs.
See System self-supervision chapter for more information.
NONOTE!TE!
Please note that the binary ouputs are polarity-sensitive.
5.3.2 Trip relays
Figure. 5.3.2 - 7. Trip relay connections
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This device has four (4) normally open trip relay outputs. Trip relays T1 and T2 are used for tripping
circuit breakers. T4 is generally used for tripping one additional disconnecting device, or as a trip alarm
(local or remote) monitoring and alarming system.
T3 can alternatively be ordered as a normally closed trip relay (electronic lock-out relay). Once opened
by fault detection it holds its open position until it receives a manual reset command or until auxiliary
power supply is lost. When re-applying the auxiliary power supply, the electronic lock-out relay returns
to the same contact condition it had prior to the power loss. This normally closed relay output can also
be used for tripping contactor-controlled devices.
T3 and T4 are always latching relays. Trip relays T1 and T2 can be set as latching relays by setting DIP
switch SW1:6 ("Latching / Non-latching") to "Latch" position. Latched relays can be reset by pressing
the "SET" button.
5.3.3 System failure relay
Figure. 5.3.3 - 8. System failure relay connection (de-energized position)
The system failure (SF) relay is of the change-over type (NO/NC) and it is energized when the device is
in a healthy condition and powered on. Whenever the device detects a system error or the auxiliary
power supply is disconnected, the SF relay changes its state. The state stays this way until the device
returns to a healthy condition. See the System self-supervision chapter for more information.
5.4 Auxiliary voltage
Figure. 5.4 - 9. Auxiliary power supply connection
The auxiliary power supply voltage is 92….265 V AC/DC. Alternatively, the optional auxiliary power
supply can be of 18…72 V DC. This choice must be speci^ed when ordering.
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Instruction manual
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6 Arc sensors
The AQ 100 series provides arc light point sensors and arc light ^ber optic loop sensors. These
sensors can be used with different devices and different switchgear types according to speci^c
application requirements.
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 ^ber loop sensors typically cover a wider protected area
with one ^ber, when there is no need to pinpoint the exact location for a fault.
6.1 Arc light =ber optic loop sensor A -06
AQ-06 is an arc light ^ber optic loop sensor, which is a plastic ^ber optic cable. Fiber sensors are
distributed through the protected switchgear cells. The ^xed light intensity threshold of an AQ-06
sensor is 8,000 lux. The sensor's detection radius is 360 degrees.
AQ-06 sensors can be ordered in pre-manufactured lengths of 3…40 meters (3 m, 5 m, 10 m, 15 m,
20 m, 25 m, 30 m, 35 m, 40 m).
6.2 Arc light =ber optic loop sensor A -07
AQ-07 is an arc light ^ber optic loop sensor, which is a robust ^ber optic cable with a practically
unlimited bending radius. The sensor contains hundreds of glass ^ber drains covered by a plastic tube,
thus making it extremely strong and durable. Fiber sensors are distributed through the protected
switchgear cells.
AQ-07 sensors can be ordered in pre-manufactured lengths of 3…50 meters (3 m, 5 m, 10 m, 15 m,
20 m, 25 m, 30 m, 35 m, 40 m, 45 m, 50 m).
The ^xed light intensity threshold of an AQ-07 sensor is 8,000 lux. The sensor's detection radius is 360
degrees.
If necessary, the ends of an AQ-07 cable can be ordered with heat shrinking tubing to avoid light
detection outside the protected zone. The covered area can be one (1) or two (2) meters by default; if
other lengths are required, please consult the Arcteq sales team. You can ^nd the Contact and
reference information page at the end of this manual.
6.3 Arc light =ber optic loop sensor A -08
AQ-08 is an arc light ^ber optic loop sensor. It is designed to withstand temperatures up to 125 ºC,
which makes it suitable for e.g. wind turbine windings. AQ-08 is a robust ^ber optic cable with a
practically unlimited bending radius. The sensor contains hundreds of glass ^ber drains that are
covered by a plastic tube, thus making it extremely strong and durable. Fiber sensors are distributed
through the protected switchgear cells.
AQ-08 sensors can be ordered in pre-manufactured lengths of 3…15 meters (3 m, 5 m, 10 m, 15 m).
The ^xed light intensity threshold of an AQ-08 sensor is 8,000 lux. The sensor's detection radius is 360
degrees.
6.4 Sensor dependencies
Compatibility of arc sensor types depend on the hardware available in the AQ 100 series device. The
table below describes those dependencies.
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Table. 6.4 - 2. Sensor dependencies.
PPoint sensorsoint sensors
(A(A -01 & A-01 & A -02)-02)
FFiber loopsiber loops
(A(A -06, A-06, A -07 & A-07 & A -08)-08)
AAQQ-101L-101LVV Yes Order option
AAQQ-101DL-101DLVV Yes Order option
AAQQ-102L-102LVV No Yes
AAQQ-103L-103LVV Yes Order option
AAQQ-110P-110PLLVV Yes Order option
AAQQ-110FL-110FLVV No Yes
6.5 Connecting sensors
6.5.1 Fiber loop sensors
1. Drill holes on the wall for the sensor cable to enter the protected compartment.
2. Install protective covers in the holes to ensure the sensor cable remains unharmed by rough
edges.
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3. Run the sensor cable through the holes and along the protected area. Fasten it to the
compartment walls with cable clips or some other appropriate anchoring method.
4. Turn the black and blue receiver (“Rx”) and transceiver (“Tx”) screws counter-clockwise and
plug in the sensor cable terminals. Then turn the screws clockwise to secure the terminals in
their place.
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7 Operation and con=guration
7.1 DIP switch settings
The DIP switches are used to easily con^gure various tripping logics and other functionalities for the
device. The DIP switches are located at the back of the device. The ^gure below presents the DIP
switch numbering, and the table below that gives a detailed description of the settings.
Protection logic can be de^ned by selecting a logic scheme with DIP switches 1 to 4. The scheme
selection is based on binary arithmetic. Logic schemes are described in the next chapter.
Tripping can be set with DIP switches 7 and 8 to require either just arc light or both arc light and
overcurrent simultaneously. Adding overcurrent criteria ensures the device trips when an arc fault
occurs but not when a strong natural light source hits the light sensor (e.g. sunlight). Overcurrent signal
comes from an external device (mainly AQ-110PLV or AQ-110FLV) and is connected to a binary input.
Please note that blocking function (DIP switch 5) must be set to OFF so that overcurrent criteria can be
used.
Figure. 7.1 - 10. DIP switch diagram.
Table. 7.1 - 3. DIP switch settings.
SwitSwitchch FFunctionunction
selectionselection ON (leON (left position)ft position) OFF (OFF (rigright position)ht position)
8 L> oror L> + I>
The tripping
criterion for the
S2, S3, S4 (point
sensor) and S5
(^ber loop)
channels. Tripping on light only (L>). Light detection only trips if overcurrent is
also detected at the same time (L> + I>)
7 S1: L> oror L> + I>
The tripping
criterion for the S1
point sensor
channel.
6Latching oror Non-
latching
Enables or
disables latching of
T1 and T2
trip relays.
T1 and T2 operate as latching
relays. T1 and T2 latching is disabled.
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SwitSwitchch FFunctionunction
selectionselection ON (leON (left position)ft position) OFF (OFF (rigright position)ht position)
5locking
function
Selects the
function of binary
input 1 or 2
(depends on the
selected logic
scheme).
The blocking function is selected.
All trip signals (T1…T4) and the
arc quenching device control
(AQD) are blocked when the
binary input is active.
Overcurrent function is selected. inary
input must be active simultaneously with
light detection for tripping to occur and
for arc quenching device control (AQD)
to activate.
4–1 Scheme
selection
Selects the logic
scheme.
Please refer to the Scheme
selection chapter.
Switch 1: 1
Switch 2: 2
Switch 3: 4
Switch 4: 8
Please refer to the Scheme
selection chapter.
Switch 1: 0
Switch 2: 0
Switch 3: 0
Switch 4: 0
7.1.1 Scheme selection
This chapter describes the schemes that are available to this device. The schemes are con^gured
using the DIP switches numbered 1…4 ("Scheme selection"). The scheme selection is based on binary
arithmetic:
• Switch 1: 1
• Switch 2: 2
• Switch 3: 4
• Switch 4: 8
AQ 100 series arc protection devices can be used as a stand-alone device or as a part of a more
complex arc portection system with multiple AQ 100 series devices. The most convenient way to set
the device to a more complex arc protection system is to use Standard Arc Schemes (SAS). For
detailed instructions on each of the available Standard Arc Schemes please refer to the AQ-SAS™
booklet (can be found at arcteq.^/downloads/).
Figure. 7.1.1 - 11. DIP switches used for selecting the logic scheme.
7.1.2 Available logic schemes
The schemes described below are the most commonly used ones for AQ-102LV devices. However,
additional schemes are also available; please contact your nearest Arcteq representative for more
information on those schemes.
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