ensto ARCTEQ AQ 100 Series User manual

A -102
Arc flash protection device
Instruction manual

Table of contents
1 Document inf1 Document informaormationtion .................................................................................................................................................................................................................................... 55
2 A2 Abbrbbreeviaviationstions .............................................................................................................................................................................................................................................................. 77
3 General3 General................................................................................................................................................................................................................................................................................ 88
4 De4 Devicevice ffeaeatturureses ........................................................................................................................................................................................................................................................ 99
5 Connections5 Connections.............................................................................................................................................................................................................................................................. 1010
5.1 Simpli_ed block diagram ...................................................................................................... 10
5.2 Inputs .................................................................................................................................. 12
5.2.1 Arc sensor channels.................................................................................................. 12
5.2.2 inary inputs ............................................................................................................. 12
5.3 Outputs ............................................................................................................................... 13
5.3.1 inary outputs ........................................................................................................... 13
5.3.2 Trip relays.................................................................................................................. 13
5.3.3 System failure relay.................................................................................................... 14
5.4 Auxiliary voltage................................................................................................................... 14
6 Ar6 Arc sensorsc sensors................................................................................................................................................................................................................................................................ 1515
6.1 Arc light _ber optic loop sensor AQ-06 ................................................................................ 15
6.2 Arc light _ber optic loop sensor AQ-07 ................................................................................ 15
6.3 Arc light _ber optic loop sensor AQ-08 ................................................................................ 15
6.4 Sensor dependencies .......................................................................................................... 15
6.5 Connecting sensors............................................................................................................. 16
6.5.1 Fiber loop sensors ..................................................................................................... 16
7 Opera7 Operation and con_gtion and con_guraurationtion .............................................................................................................................................................................................................. 1818
7.1 DIP switch settings .............................................................................................................. 18
7.1.1 Scheme selection ...................................................................................................... 19
7.1.2 Available logic schemes............................................................................................. 19
7.2 Push button (SET) ............................................................................................................... 21
7.2.1 System setup (auto-con_guration) ............................................................................. 22
7.2.2 Reset......................................................................................................................... 22
7.2.3 Input connection check ............................................................................................. 22
7.3 Circuit breaker failure protection .......................................................................................... 22
7.4 LED indicator functions........................................................................................................ 22
7.5 LED operations guide .......................................................................................................... 23
7.6 Non-volatile memory............................................................................................................ 23
8 S8 Syyststem self-superem self-supervisionvision............................................................................................................................................................................................................................ 2525
9 Applic9 Applicaation examplestion examples .................................................................................................................................................................................................................................. 2626
9.1 Application with overcurrent and arc light conditions (LV and MV) ........................................ 26
10 W10 Wiring exampleiring example.................................................................................................................................................................................................................................................. 2828
11 D11 Dimensions and installaimensions and installationtion ............................................................................................................................................................................................................ 2929
12 T12 Testingesting .......................................................................................................................................................................................................................................................................... 3131
12.1 Testing the light-only mode ................................................................................................ 31
12.2 Testing the light and current mode ..................................................................................... 31
12.3 Testing the C FP function.................................................................................................. 32
12.4 Testing the operation time.................................................................................................. 32
12.5 Test plan example .............................................................................................................. 32
13 T13 Trroubleshoooubleshootingting................................................................................................................................................................................................................................................ 3434
14 T14 Technicechnical daal datata.................................................................................................................................................................................................................................................... 3535
14.1 Mounting and installation ................................................................................................... 35
14.2 Operating times ................................................................................................................. 35
14.3 Auxiliary voltage................................................................................................................. 35
14.4 inary inputs...................................................................................................................... 35
14.5 Trip relays .......................................................................................................................... 36
14.6 inary output(s) ................................................................................................................. 36
14.7 System failure relay............................................................................................................ 36
14.8 Fiber optic loop sensors ..................................................................................................... 37
14.9 Disturbance tests............................................................................................................... 37
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14.10 Voltage tests.................................................................................................................... 38
14.11 Mechanical tests.............................................................................................................. 38
14.12 Environmental conditions ................................................................................................. 38
14.13 Casing............................................................................................................................. 38
15 Or15 Ordering infdering informaormationtion ................................................................................................................................................................................................................................ 3939
16 Contact and r16 Contact and reeffererence infence informaormationtion........................................................................................................................................................................................ 4141
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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.
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Copyright
Copyright © Arcteq Relays Ltd. 2023. All rights reserved.
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Version: 2.02
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1 Document information
Table. 1 - 1. History of Revision 1.
RReevisionvision 1.001.00
Date October 2011
Changes - The _rst revision of the manual.
RReevisionvision 1.011.01
Date October 2011
Changes - Product image added.
RReevisionvision 1.021.02
Date November 2011
Changes
- Chapter 3.3.1 revised: e.g. a DIP switch forward-and-back feature is added to system
con_guration.
- Chapter 3.3.5 revised: e.g. the scheme selection by DIP switching is added. One selective
and one non-selective scheme added.
RReevisionvision 1.031.03
Date May 2019
Changes - Input connection check added.
- Technical data updated.
Table. 1 - 2. History of Revision 2.
RReevisionvision 2.002.00
Date October 2020
Changes
- Content completely rewritten to improve grammar and readability.
- The "Available logic schemes" chapter updated.
- The AQ-02 point sensor chapter added to the "Arc sensors" chapter, and AQ-02's technical
data added to the "Technical data" chapter.
- The sensor–unit type dependency list updated.
- The "Connecting sensors" chapter added.
- All technical data checked and updated where necessary.
- Ordering information updated.
- Images updated where necessary.
RReevisionvision 2.012.01
Date November 2021
Changes
- Cut-out panel installation image added.
- Dimension measurements updated in images and in technical data.
- Wiring diagram, simpli_ed block diagram, DIP switch diagram & application image(s)
updated.
- Push button image added.
- End covering description added to AQ-07, removed from AQ-08.
- Cut-and-slice text removed from all _ber descriptions.
- Connections image updated.
- The test plan example updated.
- All table layouts uni_ed in "Technical data".
- The IP classi_cation of point sensors updated.
- The AWG value of sensor cable corrected.
- "Disturbance tests" table reformatted.
- Order code images updated.
- The number for Arcteq's technical support added to the reference information.
RReevisionvision 2.022.02
Date January 2023
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Changes
- Updated the Arcteq logo on the cover.
- Updated the distance between the flash and the sensor in the "Testing the 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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3 General
The AQ-102 is a sophisticated microprocessor-based arc flash protection device with _ber loops
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 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-102.
The AQ-102 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. AQ-102 is suitable for MV and LV switchgears as
well as for motor control center applications in both new and retro_tted installations.
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4 Device features
AQ-102 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, 110, or 220 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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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-102.
5.1 Simpli=ed block diagram
The _gure below presents the main components of the AQ-102 device.
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Figure. 5.1 - 3. Simpli_ed block diagram of AQ-102.
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5.2 Inputs
5.2.1 Arc sensor channels
Figure. 5.2.1 - 4. Arc _ber loop sensor connections
AQ-102 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. There are three (3) different nominal voltage levels available: 24, 110,
or 220 VDC. The threshold value must be chosen and speci_ed when ordering the unit. 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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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 - 3. 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-101-101 Yes Order option
AAQQ-101D-101D Yes Order option
AAQQ-101S-101S Yes No
AAQQ-102-102 No Yes
AAQQ-103-103 Yes Order option
AAQQ-110P-110P Yes Order option
AAQQ-110F-110F 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-110P or AQ-110F) and is connected to a binary input.
If the selected scheme uses C FP (circuit breaker failure protection) its time delay (100 ms or 150 ms)
can be set with DIP switch 5. C FP logic depends on the chosen logic scheme. See Circuit breaker
failure protection chapter for more information.
Figure. 7.1 - 10. DIP switch diagram.
Table. 7.1 - 4. DIP switch settings.
SwitSwitchch FFunction selectionunction selection 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.
5100 ms oror 150
ms The setting for the C FP time. The C FP time is set to 100 ms. The C FP time is set to 150 ms.
4–1 Scheme
selection Scheme selection.
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
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